/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Overflow-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/weaver/popl20-figure1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c503be2 [2021-10-13 19:25:50,018 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 19:25:50,022 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 19:25:50,080 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-13 19:25:50,122 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 19:25:50,125 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 19:25:50,128 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 19:25:50,134 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 19:25:50,136 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 19:25:50,137 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 19:25:50,144 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 19:25:50,147 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 19:25:50,152 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 19:25:50,153 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 19:25:50,155 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 19:25:50,158 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 19:25:50,164 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-13 19:25:50,176 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 19:25:50,177 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 19:25:50,178 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 19:25:50,186 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-10-13 19:25:50,238 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 19:25:50,238 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 19:25:50,239 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 19:25:50,239 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 19:25:50,243 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 19:25:50,244 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 19:25:50,244 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 19:25:50,244 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 19:25:50,244 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 19:25:50,245 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 19:25:50,246 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 19:25:50,246 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 19:25:50,246 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 19:25:50,246 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 19:25:50,247 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 19:25:50,247 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 19:25:50,247 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-13 19:25:50,247 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 19:25:50,248 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 19:25:50,248 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 19:25:50,248 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 19:25:50,248 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 19:25:50,248 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 19:25:50,249 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 19:25:50,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 19:25:50,249 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 19:25:50,249 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 19:25:50,249 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 19:25:50,250 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 19:25:50,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 19:25:50,250 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 19:25:50,250 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 19:25:50,251 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-13 19:25:50,689 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 19:25:50,720 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 19:25:50,723 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 19:25:50,725 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 19:25:50,726 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 19:25:50,727 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-figure1.wvr.c [2021-10-13 19:25:50,819 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/003b71534/c311b40744ad4044bd8194cc77761bda/FLAG7b3b28713 [2021-10-13 19:25:51,432 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 19:25:51,433 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure1.wvr.c [2021-10-13 19:25:51,439 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/003b71534/c311b40744ad4044bd8194cc77761bda/FLAG7b3b28713 [2021-10-13 19:25:51,785 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/003b71534/c311b40744ad4044bd8194cc77761bda [2021-10-13 19:25:51,788 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 19:25:51,802 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 19:25:51,803 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 19:25:51,804 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 19:25:51,808 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 19:25:51,809 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:25:51" (1/1) ... [2021-10-13 19:25:51,813 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44e1095d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:51, skipping insertion in model container [2021-10-13 19:25:51,813 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:25:51" (1/1) ... [2021-10-13 19:25:51,822 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 19:25:51,842 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 19:25:52,019 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure1.wvr.c[1991,2004] [2021-10-13 19:25:52,021 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 19:25:52,031 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 19:25:52,051 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure1.wvr.c[1991,2004] [2021-10-13 19:25:52,052 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 19:25:52,069 INFO L208 MainTranslator]: Completed translation [2021-10-13 19:25:52,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:52 WrapperNode [2021-10-13 19:25:52,070 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 19:25:52,071 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 19:25:52,071 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 19:25:52,071 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 19:25:52,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:52" (1/1) ... [2021-10-13 19:25:52,090 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:52" (1/1) ... [2021-10-13 19:25:52,112 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 19:25:52,113 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 19:25:52,114 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 19:25:52,114 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 19:25:52,124 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:52" (1/1) ... [2021-10-13 19:25:52,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:52" (1/1) ... [2021-10-13 19:25:52,127 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:52" (1/1) ... [2021-10-13 19:25:52,127 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:52" (1/1) ... [2021-10-13 19:25:52,133 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:52" (1/1) ... [2021-10-13 19:25:52,137 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:52" (1/1) ... [2021-10-13 19:25:52,139 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:52" (1/1) ... [2021-10-13 19:25:52,142 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 19:25:52,143 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 19:25:52,143 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 19:25:52,143 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 19:25:52,144 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:52" (1/1) ... [2021-10-13 19:25:52,153 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 19:25:52,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:25:52,184 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) [2021-10-13 19:25:52,199 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 [2021-10-13 19:25:52,249 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-13 19:25:52,249 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-13 19:25:52,250 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-13 19:25:52,250 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-13 19:25:52,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 19:25:52,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 19:25:52,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 19:25:52,250 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-13 19:25:52,251 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-13 19:25:52,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 19:25:52,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 19:25:52,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 19:25:52,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 19:25:52,253 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-13 19:25:52,774 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 19:25:52,774 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-13 19:25:52,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:25:52 BoogieIcfgContainer [2021-10-13 19:25:52,777 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 19:25:52,779 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 19:25:52,779 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 19:25:52,783 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 19:25:52,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:25:51" (1/3) ... [2021-10-13 19:25:52,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66009b94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:25:52, skipping insertion in model container [2021-10-13 19:25:52,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:52" (2/3) ... [2021-10-13 19:25:52,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66009b94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:25:52, skipping insertion in model container [2021-10-13 19:25:52,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:25:52" (3/3) ... [2021-10-13 19:25:52,789 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-figure1.wvr.c [2021-10-13 19:25:52,795 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-13 19:25:52,795 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 19:25:52,795 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-10-13 19:25:52,795 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-13 19:25:52,844 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,844 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,844 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,845 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,845 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,845 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,845 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,845 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,845 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,846 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,846 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,846 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,846 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,847 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,847 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,847 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,847 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,848 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,848 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,848 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,848 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,849 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,849 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,849 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,849 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,850 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,850 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,850 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,850 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,850 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,851 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,851 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,851 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,851 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,852 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,852 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,853 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,853 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,853 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,853 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,854 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,854 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,854 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,854 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,854 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,855 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,855 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,855 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,855 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,855 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,856 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,856 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,856 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,856 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,856 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,857 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,857 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,857 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,857 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,858 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,858 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,858 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,858 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,858 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,859 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,859 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,859 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,859 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,860 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,860 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,860 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,860 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,860 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,861 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,861 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,861 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,861 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,861 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,862 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,862 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,865 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,866 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,866 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,866 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,866 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,869 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,869 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,869 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,870 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,870 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,870 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,870 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:25:52,878 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-13 19:25:52,965 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 19:25:52,977 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 [2021-10-13 19:25:52,977 INFO L340 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2021-10-13 19:25:52,995 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-13 19:25:53,008 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 82 transitions, 180 flow [2021-10-13 19:25:53,011 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 82 transitions, 180 flow [2021-10-13 19:25:53,014 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 82 transitions, 180 flow [2021-10-13 19:25:53,061 INFO L129 PetriNetUnfolder]: 5/80 cut-off events. [2021-10-13 19:25:53,061 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-13 19:25:53,066 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 80 events. 5/80 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 93 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2021-10-13 19:25:53,070 INFO L116 LiptonReduction]: Number of co-enabled transitions 992 [2021-10-13 19:25:56,355 INFO L131 LiptonReduction]: Checked pairs total: 1313 [2021-10-13 19:25:56,355 INFO L133 LiptonReduction]: Total number of compositions: 73 [2021-10-13 19:25:56,366 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 25 transitions, 66 flow [2021-10-13 19:25:56,389 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 124 states, 100 states have (on average 2.94) internal successors, (294), 123 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:25:56,393 INFO L276 IsEmpty]: Start isEmpty. Operand has 124 states, 100 states have (on average 2.94) internal successors, (294), 123 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:25:56,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 19:25:56,401 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:25:56,402 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 19:25:56,403 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:25:56,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:25:56,412 INFO L82 PathProgramCache]: Analyzing trace with hash 11035611, now seen corresponding path program 1 times [2021-10-13 19:25:56,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:25:56,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712742905] [2021-10-13 19:25:56,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:25:56,432 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:25:56,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:25:56,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:25:56,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:25:56,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712742905] [2021-10-13 19:25:56,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712742905] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:25:56,837 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:25:56,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 19:25:56,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177601482] [2021-10-13 19:25:56,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 19:25:56,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:25:56,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 19:25:56,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:25:56,864 INFO L87 Difference]: Start difference. First operand has 124 states, 100 states have (on average 2.94) internal successors, (294), 123 states have internal predecessors, (294), 0 states have call successors, (0), 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 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:25:56,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:25:56,933 INFO L93 Difference]: Finished difference Result 172 states and 406 transitions. [2021-10-13 19:25:56,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:25:56,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-13 19:25:56,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:25:56,955 INFO L225 Difference]: With dead ends: 172 [2021-10-13 19:25:56,955 INFO L226 Difference]: Without dead ends: 172 [2021-10-13 19:25:56,957 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:25:56,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-10-13 19:25:57,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 122. [2021-10-13 19:25:57,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 103 states have (on average 3.1941747572815533) internal successors, (329), 121 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:25:57,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 329 transitions. [2021-10-13 19:25:57,044 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 329 transitions. Word has length 4 [2021-10-13 19:25:57,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:25:57,046 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 329 transitions. [2021-10-13 19:25:57,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:25:57,046 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 329 transitions. [2021-10-13 19:25:57,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 19:25:57,047 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:25:57,047 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 19:25:57,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 19:25:57,048 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:25:57,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:25:57,049 INFO L82 PathProgramCache]: Analyzing trace with hash 11035571, now seen corresponding path program 1 times [2021-10-13 19:25:57,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:25:57,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436059578] [2021-10-13 19:25:57,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:25:57,050 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:25:57,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:25:57,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:25:57,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:25:57,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436059578] [2021-10-13 19:25:57,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436059578] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:25:57,135 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:25:57,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 19:25:57,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022210574] [2021-10-13 19:25:57,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 19:25:57,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:25:57,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 19:25:57,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:25:57,140 INFO L87 Difference]: Start difference. First operand 122 states and 329 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:25:57,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:25:57,167 INFO L93 Difference]: Finished difference Result 108 states and 281 transitions. [2021-10-13 19:25:57,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:25:57,168 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-13 19:25:57,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:25:57,172 INFO L225 Difference]: With dead ends: 108 [2021-10-13 19:25:57,172 INFO L226 Difference]: Without dead ends: 108 [2021-10-13 19:25:57,173 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:25:57,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-10-13 19:25:57,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2021-10-13 19:25:57,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 93 states have (on average 3.021505376344086) internal successors, (281), 107 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:25:57,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 281 transitions. [2021-10-13 19:25:57,200 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 281 transitions. Word has length 4 [2021-10-13 19:25:57,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:25:57,200 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 281 transitions. [2021-10-13 19:25:57,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:25:57,201 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 281 transitions. [2021-10-13 19:25:57,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 19:25:57,202 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:25:57,202 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 19:25:57,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 19:25:57,205 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:25:57,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:25:57,206 INFO L82 PathProgramCache]: Analyzing trace with hash 11035573, now seen corresponding path program 1 times [2021-10-13 19:25:57,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:25:57,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489866166] [2021-10-13 19:25:57,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:25:57,209 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:25:57,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:25:57,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:25:57,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:25:57,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489866166] [2021-10-13 19:25:57,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489866166] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:25:57,289 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:25:57,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 19:25:57,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954891522] [2021-10-13 19:25:57,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 19:25:57,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:25:57,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 19:25:57,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:25:57,292 INFO L87 Difference]: Start difference. First operand 108 states and 281 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:25:57,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:25:57,322 INFO L93 Difference]: Finished difference Result 106 states and 239 transitions. [2021-10-13 19:25:57,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:25:57,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-13 19:25:57,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:25:57,326 INFO L225 Difference]: With dead ends: 106 [2021-10-13 19:25:57,326 INFO L226 Difference]: Without dead ends: 96 [2021-10-13 19:25:57,327 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:25:57,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-10-13 19:25:57,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2021-10-13 19:25:57,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 81 states have (on average 2.728395061728395) internal successors, (221), 95 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:25:57,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 221 transitions. [2021-10-13 19:25:57,365 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 221 transitions. Word has length 4 [2021-10-13 19:25:57,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:25:57,365 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 221 transitions. [2021-10-13 19:25:57,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:25:57,366 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 221 transitions. [2021-10-13 19:25:57,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 19:25:57,366 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:25:57,366 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 19:25:57,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 19:25:57,367 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:25:57,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:25:57,367 INFO L82 PathProgramCache]: Analyzing trace with hash 342104234, now seen corresponding path program 1 times [2021-10-13 19:25:57,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:25:57,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824983923] [2021-10-13 19:25:57,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:25:57,370 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:25:57,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:25:57,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:25:57,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:25:57,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824983923] [2021-10-13 19:25:57,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824983923] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:25:57,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678215823] [2021-10-13 19:25:57,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:25:57,463 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:25:57,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:25:57,473 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:25:57,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 19:25:57,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:25:57,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 19:25:57,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:25:57,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:25:57,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678215823] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:25:57,671 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:25:57,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2021-10-13 19:25:57,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192559166] [2021-10-13 19:25:57,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:25:57,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:25:57,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:25:57,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:25:57,678 INFO L87 Difference]: Start difference. First operand 96 states and 221 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:25:57,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:25:57,701 INFO L93 Difference]: Finished difference Result 82 states and 187 transitions. [2021-10-13 19:25:57,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 19:25:57,703 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-13 19:25:57,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:25:57,704 INFO L225 Difference]: With dead ends: 82 [2021-10-13 19:25:57,705 INFO L226 Difference]: Without dead ends: 82 [2021-10-13 19:25:57,708 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:25:57,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-10-13 19:25:57,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2021-10-13 19:25:57,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 71 states have (on average 2.6338028169014085) internal successors, (187), 81 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:25:57,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 187 transitions. [2021-10-13 19:25:57,721 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 187 transitions. Word has length 5 [2021-10-13 19:25:57,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:25:57,721 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 187 transitions. [2021-10-13 19:25:57,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:25:57,722 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 187 transitions. [2021-10-13 19:25:57,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 19:25:57,723 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:25:57,723 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 19:25:57,764 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-13 19:25:57,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:25:57,938 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:25:57,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:25:57,938 INFO L82 PathProgramCache]: Analyzing trace with hash 342104207, now seen corresponding path program 1 times [2021-10-13 19:25:57,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:25:57,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372038104] [2021-10-13 19:25:57,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:25:57,940 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:25:57,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:25:58,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:25:58,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:25:58,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372038104] [2021-10-13 19:25:58,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372038104] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:25:58,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994034099] [2021-10-13 19:25:58,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:25:58,007 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:25:58,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:25:58,010 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:25:58,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 19:25:58,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:25:58,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 19:25:58,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:25:58,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:25:58,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994034099] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:25:58,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:25:58,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2021-10-13 19:25:58,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940582019] [2021-10-13 19:25:58,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 19:25:58,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:25:58,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 19:25:58,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:25:58,081 INFO L87 Difference]: Start difference. First operand 82 states and 187 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 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) [2021-10-13 19:25:58,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:25:58,100 INFO L93 Difference]: Finished difference Result 132 states and 304 transitions. [2021-10-13 19:25:58,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 19:25:58,101 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 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 5 [2021-10-13 19:25:58,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:25:58,103 INFO L225 Difference]: With dead ends: 132 [2021-10-13 19:25:58,103 INFO L226 Difference]: Without dead ends: 132 [2021-10-13 19:25:58,103 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.6ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:25:58,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-10-13 19:25:58,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 96. [2021-10-13 19:25:58,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 85 states have (on average 2.9058823529411764) internal successors, (247), 95 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:25:58,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 247 transitions. [2021-10-13 19:25:58,110 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 247 transitions. Word has length 5 [2021-10-13 19:25:58,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:25:58,110 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 247 transitions. [2021-10-13 19:25:58,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 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) [2021-10-13 19:25:58,111 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 247 transitions. [2021-10-13 19:25:58,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 19:25:58,111 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:25:58,111 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 19:25:58,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 19:25:58,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:25:58,327 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:25:58,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:25:58,327 INFO L82 PathProgramCache]: Analyzing trace with hash 342104196, now seen corresponding path program 1 times [2021-10-13 19:25:58,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:25:58,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154932896] [2021-10-13 19:25:58,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:25:58,329 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:25:58,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:25:58,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:25:58,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:25:58,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154932896] [2021-10-13 19:25:58,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154932896] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:25:58,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284916893] [2021-10-13 19:25:58,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:25:58,527 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:25:58,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:25:58,543 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:25:58,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 19:25:58,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:25:58,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 19:25:58,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:25:58,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:25:58,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284916893] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:25:58,650 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:25:58,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2021-10-13 19:25:58,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185005778] [2021-10-13 19:25:58,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:25:58,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:25:58,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:25:58,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:25:58,662 INFO L87 Difference]: Start difference. First operand 96 states and 247 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:25:58,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:25:58,719 INFO L93 Difference]: Finished difference Result 160 states and 355 transitions. [2021-10-13 19:25:58,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 19:25:58,720 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-13 19:25:58,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:25:58,722 INFO L225 Difference]: With dead ends: 160 [2021-10-13 19:25:58,722 INFO L226 Difference]: Without dead ends: 156 [2021-10-13 19:25:58,723 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:25:58,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-10-13 19:25:58,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 128. [2021-10-13 19:25:58,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 117 states have (on average 2.786324786324786) internal successors, (326), 127 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:25:58,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 326 transitions. [2021-10-13 19:25:58,738 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 326 transitions. Word has length 5 [2021-10-13 19:25:58,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:25:58,740 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 326 transitions. [2021-10-13 19:25:58,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:25:58,741 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 326 transitions. [2021-10-13 19:25:58,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 19:25:58,741 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:25:58,741 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2021-10-13 19:25:58,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-13 19:25:58,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:25:58,943 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:25:58,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:25:58,944 INFO L82 PathProgramCache]: Analyzing trace with hash 2015296928, now seen corresponding path program 2 times [2021-10-13 19:25:58,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:25:58,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553581423] [2021-10-13 19:25:58,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:25:58,945 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:25:58,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:25:58,983 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:25:58,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:25:58,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553581423] [2021-10-13 19:25:58,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553581423] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:25:58,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342290692] [2021-10-13 19:25:58,985 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:25:58,985 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:25:58,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:25:58,986 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:25:59,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-13 19:25:59,041 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 19:25:59,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:25:59,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 19:25:59,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:25:59,077 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 19:25:59,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342290692] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:25:59,078 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:25:59,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2021-10-13 19:25:59,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729524774] [2021-10-13 19:25:59,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 19:25:59,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:25:59,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 19:25:59,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:25:59,080 INFO L87 Difference]: Start difference. First operand 128 states and 326 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:25:59,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:25:59,095 INFO L93 Difference]: Finished difference Result 96 states and 222 transitions. [2021-10-13 19:25:59,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:25:59,095 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-13 19:25:59,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:25:59,097 INFO L225 Difference]: With dead ends: 96 [2021-10-13 19:25:59,097 INFO L226 Difference]: Without dead ends: 96 [2021-10-13 19:25:59,097 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 13.6ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:25:59,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-10-13 19:25:59,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 82. [2021-10-13 19:25:59,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 77 states have (on average 2.4285714285714284) internal successors, (187), 81 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:25:59,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 187 transitions. [2021-10-13 19:25:59,102 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 187 transitions. Word has length 6 [2021-10-13 19:25:59,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:25:59,103 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 187 transitions. [2021-10-13 19:25:59,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:25:59,103 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 187 transitions. [2021-10-13 19:25:59,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 19:25:59,104 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:25:59,104 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2021-10-13 19:25:59,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-13 19:25:59,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:25:59,318 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:25:59,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:25:59,319 INFO L82 PathProgramCache]: Analyzing trace with hash 2015296917, now seen corresponding path program 2 times [2021-10-13 19:25:59,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:25:59,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772661428] [2021-10-13 19:25:59,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:25:59,321 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:25:59,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:25:59,380 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:25:59,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:25:59,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772661428] [2021-10-13 19:25:59,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772661428] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:25:59,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533772474] [2021-10-13 19:25:59,382 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:25:59,382 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:25:59,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:25:59,385 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:25:59,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-13 19:25:59,440 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:25:59,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:25:59,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 19:25:59,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:25:59,474 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:25:59,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533772474] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:25:59,474 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:25:59,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-10-13 19:25:59,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403587848] [2021-10-13 19:25:59,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 19:25:59,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:25:59,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 19:25:59,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:25:59,479 INFO L87 Difference]: Start difference. First operand 82 states and 187 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) [2021-10-13 19:25:59,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:25:59,515 INFO L93 Difference]: Finished difference Result 134 states and 296 transitions. [2021-10-13 19:25:59,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 19:25:59,516 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 [2021-10-13 19:25:59,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:25:59,517 INFO L225 Difference]: With dead ends: 134 [2021-10-13 19:25:59,517 INFO L226 Difference]: Without dead ends: 130 [2021-10-13 19:25:59,518 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.2ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:25:59,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-10-13 19:25:59,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 102. [2021-10-13 19:25:59,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 97 states have (on average 2.463917525773196) internal successors, (239), 101 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:25:59,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 239 transitions. [2021-10-13 19:25:59,523 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 239 transitions. Word has length 6 [2021-10-13 19:25:59,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:25:59,524 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 239 transitions. [2021-10-13 19:25:59,524 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) [2021-10-13 19:25:59,524 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 239 transitions. [2021-10-13 19:25:59,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 19:25:59,525 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:25:59,525 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1] [2021-10-13 19:25:59,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-13 19:25:59,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:25:59,739 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:25:59,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:25:59,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1950303580, now seen corresponding path program 3 times [2021-10-13 19:25:59,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:25:59,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619864533] [2021-10-13 19:25:59,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:25:59,742 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:25:59,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:25:59,785 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:25:59,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:25:59,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619864533] [2021-10-13 19:25:59,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619864533] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:25:59,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998210330] [2021-10-13 19:25:59,789 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:25:59,790 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:25:59,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:25:59,798 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:25:59,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-13 19:25:59,849 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 19:25:59,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:25:59,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 19:25:59,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:25:59,890 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:25:59,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998210330] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:25:59,891 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:25:59,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-10-13 19:25:59,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089873319] [2021-10-13 19:25:59,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 19:25:59,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:25:59,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 19:25:59,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:25:59,895 INFO L87 Difference]: Start difference. First operand 102 states and 239 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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) [2021-10-13 19:25:59,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:25:59,940 INFO L93 Difference]: Finished difference Result 168 states and 381 transitions. [2021-10-13 19:25:59,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 19:25:59,941 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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 [2021-10-13 19:25:59,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:25:59,943 INFO L225 Difference]: With dead ends: 168 [2021-10-13 19:25:59,943 INFO L226 Difference]: Without dead ends: 164 [2021-10-13 19:25:59,943 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.1ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:25:59,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-10-13 19:25:59,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 122. [2021-10-13 19:25:59,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 117 states have (on average 2.4871794871794872) internal successors, (291), 121 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:25:59,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 291 transitions. [2021-10-13 19:25:59,953 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 291 transitions. Word has length 7 [2021-10-13 19:25:59,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:25:59,954 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 291 transitions. [2021-10-13 19:25:59,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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) [2021-10-13 19:25:59,954 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 291 transitions. [2021-10-13 19:25:59,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 19:25:59,956 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:25:59,956 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:26:00,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-13 19:26:00,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:00,172 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:26:00,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:26:00,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1940972123, now seen corresponding path program 1 times [2021-10-13 19:26:00,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:26:00,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810344075] [2021-10-13 19:26:00,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:26:00,173 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:26:00,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:26:00,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:00,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:26:00,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810344075] [2021-10-13 19:26:00,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810344075] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:26:00,229 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:26:00,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 19:26:00,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45555730] [2021-10-13 19:26:00,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 19:26:00,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:26:00,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 19:26:00,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:26:00,231 INFO L87 Difference]: Start difference. First operand 122 states and 291 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:00,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:26:00,246 INFO L93 Difference]: Finished difference Result 170 states and 400 transitions. [2021-10-13 19:26:00,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:26:00,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-13 19:26:00,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:26:00,248 INFO L225 Difference]: With dead ends: 170 [2021-10-13 19:26:00,248 INFO L226 Difference]: Without dead ends: 160 [2021-10-13 19:26:00,249 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:26:00,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-10-13 19:26:00,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 140. [2021-10-13 19:26:00,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 135 states have (on average 2.6148148148148147) internal successors, (353), 139 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:00,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 353 transitions. [2021-10-13 19:26:00,261 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 353 transitions. Word has length 8 [2021-10-13 19:26:00,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:26:00,262 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 353 transitions. [2021-10-13 19:26:00,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:00,262 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 353 transitions. [2021-10-13 19:26:00,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 19:26:00,263 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:26:00,263 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1] [2021-10-13 19:26:00,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-13 19:26:00,265 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:26:00,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:26:00,266 INFO L82 PathProgramCache]: Analyzing trace with hash -329867403, now seen corresponding path program 4 times [2021-10-13 19:26:00,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:26:00,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616771427] [2021-10-13 19:26:00,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:26:00,266 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:26:00,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:26:00,340 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:00,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:26:00,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616771427] [2021-10-13 19:26:00,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616771427] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:00,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762067897] [2021-10-13 19:26:00,344 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:26:00,344 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:00,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:26:00,345 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:26:00,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-13 19:26:00,403 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:26:00,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:26:00,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 19:26:00,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:26:00,440 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:00,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762067897] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:00,440 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:26:00,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-10-13 19:26:00,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835014832] [2021-10-13 19:26:00,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 19:26:00,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:26:00,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 19:26:00,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-13 19:26:00,444 INFO L87 Difference]: Start difference. First operand 140 states and 353 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:00,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:26:00,500 INFO L93 Difference]: Finished difference Result 226 states and 544 transitions. [2021-10-13 19:26:00,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 19:26:00,501 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-13 19:26:00,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:26:00,503 INFO L225 Difference]: With dead ends: 226 [2021-10-13 19:26:00,503 INFO L226 Difference]: Without dead ends: 222 [2021-10-13 19:26:00,504 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.2ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-13 19:26:00,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-10-13 19:26:00,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 166. [2021-10-13 19:26:00,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 161 states have (on average 2.6149068322981366) internal successors, (421), 165 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:00,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 421 transitions. [2021-10-13 19:26:00,511 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 421 transitions. Word has length 8 [2021-10-13 19:26:00,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:26:00,512 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 421 transitions. [2021-10-13 19:26:00,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:00,512 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 421 transitions. [2021-10-13 19:26:00,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 19:26:00,513 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:26:00,513 INFO L512 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1] [2021-10-13 19:26:00,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-13 19:26:00,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:00,725 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:26:00,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:26:00,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1635953468, now seen corresponding path program 5 times [2021-10-13 19:26:00,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:26:00,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341229789] [2021-10-13 19:26:00,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:26:00,728 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:26:00,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:26:00,795 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:00,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:26:00,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341229789] [2021-10-13 19:26:00,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341229789] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:00,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569220950] [2021-10-13 19:26:00,801 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:26:00,801 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:00,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:26:00,802 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:26:00,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-13 19:26:00,894 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-13 19:26:00,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:26:00,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 19:26:00,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:26:00,942 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:00,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569220950] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:00,946 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:26:00,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-13 19:26:00,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309332197] [2021-10-13 19:26:00,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 19:26:00,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:26:00,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 19:26:00,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-13 19:26:00,948 INFO L87 Difference]: Start difference. First operand 166 states and 421 transitions. Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 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) [2021-10-13 19:26:01,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:26:01,012 INFO L93 Difference]: Finished difference Result 266 states and 645 transitions. [2021-10-13 19:26:01,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 19:26:01,012 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 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 [2021-10-13 19:26:01,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:26:01,015 INFO L225 Difference]: With dead ends: 266 [2021-10-13 19:26:01,015 INFO L226 Difference]: Without dead ends: 262 [2021-10-13 19:26:01,016 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.8ms TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-13 19:26:01,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-10-13 19:26:01,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 192. [2021-10-13 19:26:01,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 187 states have (on average 2.6149732620320854) internal successors, (489), 191 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:01,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 489 transitions. [2021-10-13 19:26:01,026 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 489 transitions. Word has length 9 [2021-10-13 19:26:01,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:26:01,026 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 489 transitions. [2021-10-13 19:26:01,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 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) [2021-10-13 19:26:01,026 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 489 transitions. [2021-10-13 19:26:01,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 19:26:01,028 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:26:01,028 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:26:01,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-13 19:26:01,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-13 19:26:01,242 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:26:01,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:26:01,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1258391328, now seen corresponding path program 1 times [2021-10-13 19:26:01,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:26:01,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821719712] [2021-10-13 19:26:01,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:26:01,244 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:26:01,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:26:01,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:26:01,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:26:01,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821719712] [2021-10-13 19:26:01,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821719712] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:26:01,270 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:26:01,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 19:26:01,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30351138] [2021-10-13 19:26:01,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 19:26:01,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:26:01,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 19:26:01,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:26:01,271 INFO L87 Difference]: Start difference. First operand 192 states and 489 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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) [2021-10-13 19:26:01,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:26:01,279 INFO L93 Difference]: Finished difference Result 172 states and 410 transitions. [2021-10-13 19:26:01,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:26:01,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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 10 [2021-10-13 19:26:01,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:26:01,281 INFO L225 Difference]: With dead ends: 172 [2021-10-13 19:26:01,282 INFO L226 Difference]: Without dead ends: 112 [2021-10-13 19:26:01,282 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:26:01,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-10-13 19:26:01,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 92. [2021-10-13 19:26:01,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 89 states have (on average 2.359550561797753) internal successors, (210), 91 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:01,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 210 transitions. [2021-10-13 19:26:01,286 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 210 transitions. Word has length 10 [2021-10-13 19:26:01,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:26:01,287 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 210 transitions. [2021-10-13 19:26:01,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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) [2021-10-13 19:26:01,287 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 210 transitions. [2021-10-13 19:26:01,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 19:26:01,288 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:26:01,288 INFO L512 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1] [2021-10-13 19:26:01,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-13 19:26:01,288 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:26:01,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:26:01,289 INFO L82 PathProgramCache]: Analyzing trace with hash 825051477, now seen corresponding path program 6 times [2021-10-13 19:26:01,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:26:01,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795595577] [2021-10-13 19:26:01,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:26:01,289 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:26:01,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:26:01,348 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:01,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:26:01,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795595577] [2021-10-13 19:26:01,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795595577] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:01,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438979372] [2021-10-13 19:26:01,349 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:26:01,349 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:01,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:26:01,350 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:26:01,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-13 19:26:01,415 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-13 19:26:01,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:26:01,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 19:26:01,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:26:01,459 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:01,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438979372] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:01,459 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:26:01,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-10-13 19:26:01,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032519546] [2021-10-13 19:26:01,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 19:26:01,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:26:01,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 19:26:01,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-13 19:26:01,461 INFO L87 Difference]: Start difference. First operand 92 states and 210 transitions. Second operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:01,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:26:01,500 INFO L93 Difference]: Finished difference Result 158 states and 359 transitions. [2021-10-13 19:26:01,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 19:26:01,501 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-13 19:26:01,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:26:01,502 INFO L225 Difference]: With dead ends: 158 [2021-10-13 19:26:01,502 INFO L226 Difference]: Without dead ends: 124 [2021-10-13 19:26:01,503 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.4ms TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-13 19:26:01,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-10-13 19:26:01,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 100. [2021-10-13 19:26:01,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 97 states have (on average 2.3608247422680413) internal successors, (229), 99 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:01,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 229 transitions. [2021-10-13 19:26:01,507 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 229 transitions. Word has length 10 [2021-10-13 19:26:01,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:26:01,507 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 229 transitions. [2021-10-13 19:26:01,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:01,508 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 229 transitions. [2021-10-13 19:26:01,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 19:26:01,509 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:26:01,509 INFO L512 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1] [2021-10-13 19:26:01,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-13 19:26:01,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:01,724 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:26:01,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:26:01,725 INFO L82 PathProgramCache]: Analyzing trace with hash -193206556, now seen corresponding path program 7 times [2021-10-13 19:26:01,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:26:01,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979556964] [2021-10-13 19:26:01,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:26:01,726 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:26:01,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:26:01,806 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:01,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:26:01,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979556964] [2021-10-13 19:26:01,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979556964] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:01,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710373950] [2021-10-13 19:26:01,807 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:26:01,807 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:01,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:26:01,808 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:26:01,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-13 19:26:01,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:26:01,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:26:01,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:26:01,925 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:01,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710373950] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:01,926 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:26:01,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-10-13 19:26:01,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823902248] [2021-10-13 19:26:01,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 19:26:01,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:26:01,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 19:26:01,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-13 19:26:01,931 INFO L87 Difference]: Start difference. First operand 100 states and 229 transitions. Second operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:01,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:26:01,984 INFO L93 Difference]: Finished difference Result 174 states and 397 transitions. [2021-10-13 19:26:01,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 19:26:01,985 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 19:26:01,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:26:01,986 INFO L225 Difference]: With dead ends: 174 [2021-10-13 19:26:01,987 INFO L226 Difference]: Without dead ends: 136 [2021-10-13 19:26:01,989 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.1ms TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-13 19:26:01,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-10-13 19:26:01,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 108. [2021-10-13 19:26:01,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 105 states have (on average 2.361904761904762) internal successors, (248), 107 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:01,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 248 transitions. [2021-10-13 19:26:01,995 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 248 transitions. Word has length 11 [2021-10-13 19:26:01,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:26:01,995 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 248 transitions. [2021-10-13 19:26:01,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:01,996 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 248 transitions. [2021-10-13 19:26:01,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 19:26:01,998 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:26:01,998 INFO L512 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1] [2021-10-13 19:26:02,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-13 19:26:02,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-13 19:26:02,212 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:26:02,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:26:02,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1694434507, now seen corresponding path program 8 times [2021-10-13 19:26:02,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:26:02,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347282460] [2021-10-13 19:26:02,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:26:02,214 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:26:02,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:26:02,292 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:02,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:26:02,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347282460] [2021-10-13 19:26:02,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347282460] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:02,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283924746] [2021-10-13 19:26:02,293 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:26:02,293 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:02,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:26:02,294 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:26:02,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-13 19:26:02,371 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:26:02,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:26:02,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 19:26:02,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:26:02,424 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:02,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283924746] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:02,425 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:26:02,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-10-13 19:26:02,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506016947] [2021-10-13 19:26:02,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 19:26:02,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:26:02,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 19:26:02,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-13 19:26:02,427 INFO L87 Difference]: Start difference. First operand 108 states and 248 transitions. Second operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:02,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:26:02,480 INFO L93 Difference]: Finished difference Result 190 states and 435 transitions. [2021-10-13 19:26:02,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 19:26:02,481 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-13 19:26:02,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:26:02,483 INFO L225 Difference]: With dead ends: 190 [2021-10-13 19:26:02,483 INFO L226 Difference]: Without dead ends: 148 [2021-10-13 19:26:02,483 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.7ms TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-13 19:26:02,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-10-13 19:26:02,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 116. [2021-10-13 19:26:02,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 113 states have (on average 2.3628318584070795) internal successors, (267), 115 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:02,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 267 transitions. [2021-10-13 19:26:02,489 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 267 transitions. Word has length 12 [2021-10-13 19:26:02,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:26:02,489 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 267 transitions. [2021-10-13 19:26:02,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:02,489 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 267 transitions. [2021-10-13 19:26:02,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 19:26:02,490 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:26:02,490 INFO L512 BasicCegarLoop]: trace histogram [9, 1, 1, 1, 1] [2021-10-13 19:26:02,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-13 19:26:02,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:02,706 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:26:02,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:26:02,706 INFO L82 PathProgramCache]: Analyzing trace with hash -987860732, now seen corresponding path program 9 times [2021-10-13 19:26:02,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:26:02,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108066050] [2021-10-13 19:26:02,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:26:02,707 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:26:02,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:26:02,799 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:02,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:26:02,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108066050] [2021-10-13 19:26:02,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108066050] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:02,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36314441] [2021-10-13 19:26:02,800 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:26:02,800 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:02,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:26:02,801 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:26:02,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-13 19:26:02,878 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-10-13 19:26:02,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:26:02,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 19:26:02,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:26:02,933 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:02,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36314441] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:02,934 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:26:02,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-10-13 19:26:02,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388421527] [2021-10-13 19:26:02,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 19:26:02,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:26:02,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 19:26:02,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:26:02,936 INFO L87 Difference]: Start difference. First operand 116 states and 267 transitions. Second operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:02,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:26:02,988 INFO L93 Difference]: Finished difference Result 206 states and 473 transitions. [2021-10-13 19:26:02,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 19:26:02,989 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-13 19:26:02,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:26:02,990 INFO L225 Difference]: With dead ends: 206 [2021-10-13 19:26:02,991 INFO L226 Difference]: Without dead ends: 160 [2021-10-13 19:26:02,991 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.9ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:26:02,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-10-13 19:26:02,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 124. [2021-10-13 19:26:02,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 121 states have (on average 2.3636363636363638) internal successors, (286), 123 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:02,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 286 transitions. [2021-10-13 19:26:02,996 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 286 transitions. Word has length 13 [2021-10-13 19:26:02,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:26:02,996 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 286 transitions. [2021-10-13 19:26:02,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:02,997 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 286 transitions. [2021-10-13 19:26:02,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 19:26:02,997 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:26:02,997 INFO L512 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1] [2021-10-13 19:26:03,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-13 19:26:03,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-13 19:26:03,212 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:26:03,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:26:03,213 INFO L82 PathProgramCache]: Analyzing trace with hash -558910187, now seen corresponding path program 10 times [2021-10-13 19:26:03,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:26:03,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878778586] [2021-10-13 19:26:03,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:26:03,214 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:26:03,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:26:03,328 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:03,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:26:03,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878778586] [2021-10-13 19:26:03,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878778586] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:03,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906108458] [2021-10-13 19:26:03,329 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:26:03,329 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:03,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:26:03,330 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:26:03,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-13 19:26:03,412 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:26:03,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:26:03,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 19:26:03,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:26:03,465 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:03,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906108458] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:03,465 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:26:03,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-10-13 19:26:03,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625652455] [2021-10-13 19:26:03,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 19:26:03,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:26:03,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 19:26:03,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-10-13 19:26:03,467 INFO L87 Difference]: Start difference. First operand 124 states and 286 transitions. Second operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 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) [2021-10-13 19:26:03,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:26:03,535 INFO L93 Difference]: Finished difference Result 222 states and 511 transitions. [2021-10-13 19:26:03,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 19:26:03,536 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 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 [2021-10-13 19:26:03,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:26:03,538 INFO L225 Difference]: With dead ends: 222 [2021-10-13 19:26:03,538 INFO L226 Difference]: Without dead ends: 172 [2021-10-13 19:26:03,538 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.4ms TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-10-13 19:26:03,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-10-13 19:26:03,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 132. [2021-10-13 19:26:03,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 129 states have (on average 2.364341085271318) internal successors, (305), 131 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:03,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 305 transitions. [2021-10-13 19:26:03,544 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 305 transitions. Word has length 14 [2021-10-13 19:26:03,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:26:03,544 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 305 transitions. [2021-10-13 19:26:03,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 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) [2021-10-13 19:26:03,545 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 305 transitions. [2021-10-13 19:26:03,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 19:26:03,545 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:26:03,546 INFO L512 BasicCegarLoop]: trace histogram [11, 1, 1, 1, 1] [2021-10-13 19:26:03,582 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-10-13 19:26:03,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-13 19:26:03,760 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:26:03,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:26:03,761 INFO L82 PathProgramCache]: Analyzing trace with hash -146345180, now seen corresponding path program 11 times [2021-10-13 19:26:03,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:26:03,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372773118] [2021-10-13 19:26:03,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:26:03,762 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:26:03,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:26:03,870 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:03,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:26:03,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372773118] [2021-10-13 19:26:03,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372773118] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:03,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300296220] [2021-10-13 19:26:03,871 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:26:03,872 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:03,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:26:03,873 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:26:03,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-13 19:26:03,959 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-10-13 19:26:03,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:26:03,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 19:26:03,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:26:04,016 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:04,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300296220] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:04,016 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:26:04,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2021-10-13 19:26:04,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535658323] [2021-10-13 19:26:04,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 19:26:04,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:26:04,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 19:26:04,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-10-13 19:26:04,018 INFO L87 Difference]: Start difference. First operand 132 states and 305 transitions. Second operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 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) [2021-10-13 19:26:04,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:26:04,101 INFO L93 Difference]: Finished difference Result 238 states and 549 transitions. [2021-10-13 19:26:04,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 19:26:04,102 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 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 [2021-10-13 19:26:04,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:26:04,103 INFO L225 Difference]: With dead ends: 238 [2021-10-13 19:26:04,103 INFO L226 Difference]: Without dead ends: 184 [2021-10-13 19:26:04,104 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 64.5ms TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-10-13 19:26:04,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-10-13 19:26:04,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 140. [2021-10-13 19:26:04,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 137 states have (on average 2.3649635036496353) internal successors, (324), 139 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:04,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 324 transitions. [2021-10-13 19:26:04,110 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 324 transitions. Word has length 15 [2021-10-13 19:26:04,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:26:04,110 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 324 transitions. [2021-10-13 19:26:04,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 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) [2021-10-13 19:26:04,110 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 324 transitions. [2021-10-13 19:26:04,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 19:26:04,111 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:26:04,111 INFO L512 BasicCegarLoop]: trace histogram [12, 1, 1, 1, 1] [2021-10-13 19:26:04,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-13 19:26:04,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:04,326 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:26:04,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:26:04,327 INFO L82 PathProgramCache]: Analyzing trace with hash -241731851, now seen corresponding path program 12 times [2021-10-13 19:26:04,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:26:04,328 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785610847] [2021-10-13 19:26:04,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:26:04,328 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:26:04,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:26:04,463 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:04,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:26:04,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785610847] [2021-10-13 19:26:04,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785610847] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:04,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390401976] [2021-10-13 19:26:04,464 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:26:04,464 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:04,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:26:04,466 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:26:04,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-13 19:26:04,549 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-13 19:26:04,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:26:04,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 19:26:04,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:26:04,609 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:04,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390401976] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:04,609 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:26:04,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2021-10-13 19:26:04,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733838988] [2021-10-13 19:26:04,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 19:26:04,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:26:04,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 19:26:04,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-10-13 19:26:04,612 INFO L87 Difference]: Start difference. First operand 140 states and 324 transitions. Second operand has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:04,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:26:04,694 INFO L93 Difference]: Finished difference Result 254 states and 587 transitions. [2021-10-13 19:26:04,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 19:26:04,695 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 19:26:04,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:26:04,696 INFO L225 Difference]: With dead ends: 254 [2021-10-13 19:26:04,697 INFO L226 Difference]: Without dead ends: 196 [2021-10-13 19:26:04,697 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 86.3ms TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-10-13 19:26:04,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-10-13 19:26:04,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 148. [2021-10-13 19:26:04,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 145 states have (on average 2.3655172413793104) internal successors, (343), 147 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:04,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 343 transitions. [2021-10-13 19:26:04,703 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 343 transitions. Word has length 16 [2021-10-13 19:26:04,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:26:04,704 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 343 transitions. [2021-10-13 19:26:04,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:04,704 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 343 transitions. [2021-10-13 19:26:04,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 19:26:04,705 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:26:04,705 INFO L512 BasicCegarLoop]: trace histogram [13, 1, 1, 1, 1] [2021-10-13 19:26:04,742 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-13 19:26:04,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:04,920 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:26:04,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:26:04,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1096248644, now seen corresponding path program 13 times [2021-10-13 19:26:04,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:26:04,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516114367] [2021-10-13 19:26:04,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:26:04,921 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:26:04,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:26:05,066 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:05,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:26:05,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516114367] [2021-10-13 19:26:05,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516114367] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:05,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878998438] [2021-10-13 19:26:05,067 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:26:05,067 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:05,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:26:05,069 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:26:05,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-13 19:26:05,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:26:05,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 19:26:05,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:26:05,248 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:05,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878998438] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:05,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:26:05,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2021-10-13 19:26:05,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540134172] [2021-10-13 19:26:05,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 19:26:05,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:26:05,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 19:26:05,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-10-13 19:26:05,253 INFO L87 Difference]: Start difference. First operand 148 states and 343 transitions. Second operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:05,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:26:05,345 INFO L93 Difference]: Finished difference Result 270 states and 625 transitions. [2021-10-13 19:26:05,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 19:26:05,346 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 19:26:05,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:26:05,348 INFO L225 Difference]: With dead ends: 270 [2021-10-13 19:26:05,348 INFO L226 Difference]: Without dead ends: 208 [2021-10-13 19:26:05,349 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 97.1ms TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-10-13 19:26:05,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-10-13 19:26:05,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 156. [2021-10-13 19:26:05,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 153 states have (on average 2.366013071895425) internal successors, (362), 155 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:05,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 362 transitions. [2021-10-13 19:26:05,357 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 362 transitions. Word has length 17 [2021-10-13 19:26:05,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:26:05,357 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 362 transitions. [2021-10-13 19:26:05,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:05,357 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 362 transitions. [2021-10-13 19:26:05,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 19:26:05,358 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:26:05,358 INFO L512 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1] [2021-10-13 19:26:05,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-13 19:26:05,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-10-13 19:26:05,573 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:26:05,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:26:05,573 INFO L82 PathProgramCache]: Analyzing trace with hash -376028971, now seen corresponding path program 14 times [2021-10-13 19:26:05,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:26:05,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847117858] [2021-10-13 19:26:05,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:26:05,574 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:26:05,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:26:05,740 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:05,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:26:05,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847117858] [2021-10-13 19:26:05,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847117858] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:05,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857172358] [2021-10-13 19:26:05,741 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:26:05,742 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:05,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:26:05,743 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:26:05,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-13 19:26:05,849 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:26:05,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:26:05,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 19:26:05,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:26:05,915 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:05,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857172358] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:05,915 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:26:05,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2021-10-13 19:26:05,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096101010] [2021-10-13 19:26:05,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 19:26:05,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:26:05,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 19:26:05,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-10-13 19:26:05,917 INFO L87 Difference]: Start difference. First operand 156 states and 362 transitions. Second operand has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:06,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:26:06,001 INFO L93 Difference]: Finished difference Result 286 states and 663 transitions. [2021-10-13 19:26:06,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 19:26:06,002 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-13 19:26:06,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:26:06,004 INFO L225 Difference]: With dead ends: 286 [2021-10-13 19:26:06,004 INFO L226 Difference]: Without dead ends: 220 [2021-10-13 19:26:06,004 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 110.1ms TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-10-13 19:26:06,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-10-13 19:26:06,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 164. [2021-10-13 19:26:06,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 161 states have (on average 2.3664596273291925) internal successors, (381), 163 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:06,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 381 transitions. [2021-10-13 19:26:06,011 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 381 transitions. Word has length 18 [2021-10-13 19:26:06,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:26:06,012 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 381 transitions. [2021-10-13 19:26:06,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:06,012 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 381 transitions. [2021-10-13 19:26:06,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 19:26:06,013 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:26:06,013 INFO L512 BasicCegarLoop]: trace histogram [15, 1, 1, 1, 1] [2021-10-13 19:26:06,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-13 19:26:06,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:06,227 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:26:06,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:26:06,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1228005220, now seen corresponding path program 15 times [2021-10-13 19:26:06,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:26:06,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795234057] [2021-10-13 19:26:06,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:26:06,229 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:26:06,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:26:06,413 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:06,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:26:06,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795234057] [2021-10-13 19:26:06,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795234057] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:06,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528971277] [2021-10-13 19:26:06,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:26:06,414 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:06,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:26:06,415 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:26:06,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-13 19:26:06,526 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-10-13 19:26:06,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:26:06,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 19:26:06,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:26:06,598 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:06,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528971277] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:06,598 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:26:06,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2021-10-13 19:26:06,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000064149] [2021-10-13 19:26:06,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 19:26:06,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:26:06,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 19:26:06,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-10-13 19:26:06,600 INFO L87 Difference]: Start difference. First operand 164 states and 381 transitions. Second operand has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:06,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:26:06,690 INFO L93 Difference]: Finished difference Result 302 states and 701 transitions. [2021-10-13 19:26:06,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 19:26:06,691 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-13 19:26:06,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:26:06,693 INFO L225 Difference]: With dead ends: 302 [2021-10-13 19:26:06,693 INFO L226 Difference]: Without dead ends: 232 [2021-10-13 19:26:06,694 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 105.7ms TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-10-13 19:26:06,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-10-13 19:26:06,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 172. [2021-10-13 19:26:06,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 169 states have (on average 2.366863905325444) internal successors, (400), 171 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:06,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 400 transitions. [2021-10-13 19:26:06,701 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 400 transitions. Word has length 19 [2021-10-13 19:26:06,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:26:06,701 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 400 transitions. [2021-10-13 19:26:06,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:06,702 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 400 transitions. [2021-10-13 19:26:06,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 19:26:06,702 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:26:06,703 INFO L512 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1] [2021-10-13 19:26:06,735 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-10-13 19:26:06,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:06,917 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:26:06,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:26:06,917 INFO L82 PathProgramCache]: Analyzing trace with hash -586542411, now seen corresponding path program 16 times [2021-10-13 19:26:06,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:26:06,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004763869] [2021-10-13 19:26:06,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:26:06,919 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:26:06,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:26:07,108 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:07,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:26:07,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004763869] [2021-10-13 19:26:07,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004763869] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:07,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436497641] [2021-10-13 19:26:07,109 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:26:07,109 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:07,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:26:07,110 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:26:07,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-13 19:26:07,227 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:26:07,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:26:07,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 19:26:07,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:26:07,326 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:07,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436497641] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:07,326 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:26:07,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2021-10-13 19:26:07,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520070775] [2021-10-13 19:26:07,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 19:26:07,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:26:07,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 19:26:07,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-10-13 19:26:07,329 INFO L87 Difference]: Start difference. First operand 172 states and 400 transitions. Second operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:07,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:26:07,450 INFO L93 Difference]: Finished difference Result 318 states and 739 transitions. [2021-10-13 19:26:07,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 19:26:07,451 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-13 19:26:07,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:26:07,453 INFO L225 Difference]: With dead ends: 318 [2021-10-13 19:26:07,454 INFO L226 Difference]: Without dead ends: 244 [2021-10-13 19:26:07,454 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 127.6ms TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-10-13 19:26:07,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-10-13 19:26:07,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 180. [2021-10-13 19:26:07,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 177 states have (on average 2.367231638418079) internal successors, (419), 179 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:07,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 419 transitions. [2021-10-13 19:26:07,462 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 419 transitions. Word has length 20 [2021-10-13 19:26:07,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:26:07,462 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 419 transitions. [2021-10-13 19:26:07,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:07,463 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 419 transitions. [2021-10-13 19:26:07,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 19:26:07,464 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:26:07,464 INFO L512 BasicCegarLoop]: trace histogram [17, 1, 1, 1, 1] [2021-10-13 19:26:07,504 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-13 19:26:07,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-10-13 19:26:07,680 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:26:07,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:26:07,681 INFO L82 PathProgramCache]: Analyzing trace with hash -1002944124, now seen corresponding path program 17 times [2021-10-13 19:26:07,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:26:07,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420509480] [2021-10-13 19:26:07,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:26:07,682 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:26:07,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:26:07,903 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:07,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:26:07,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420509480] [2021-10-13 19:26:07,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420509480] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:07,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811885010] [2021-10-13 19:26:07,905 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:26:07,905 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:07,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:26:07,906 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:26:07,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-13 19:26:08,027 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-10-13 19:26:08,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:26:08,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 19:26:08,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:26:08,100 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:08,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811885010] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:08,101 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:26:08,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2021-10-13 19:26:08,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904226823] [2021-10-13 19:26:08,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 19:26:08,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:26:08,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 19:26:08,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2021-10-13 19:26:08,103 INFO L87 Difference]: Start difference. First operand 180 states and 419 transitions. Second operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 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) [2021-10-13 19:26:08,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:26:08,208 INFO L93 Difference]: Finished difference Result 334 states and 777 transitions. [2021-10-13 19:26:08,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 19:26:08,208 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 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 [2021-10-13 19:26:08,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:26:08,210 INFO L225 Difference]: With dead ends: 334 [2021-10-13 19:26:08,210 INFO L226 Difference]: Without dead ends: 256 [2021-10-13 19:26:08,211 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 163.3ms TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2021-10-13 19:26:08,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-10-13 19:26:08,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 188. [2021-10-13 19:26:08,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 185 states have (on average 2.3675675675675674) internal successors, (438), 187 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:08,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 438 transitions. [2021-10-13 19:26:08,221 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 438 transitions. Word has length 21 [2021-10-13 19:26:08,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:26:08,222 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 438 transitions. [2021-10-13 19:26:08,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 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) [2021-10-13 19:26:08,223 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 438 transitions. [2021-10-13 19:26:08,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 19:26:08,224 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:26:08,224 INFO L512 BasicCegarLoop]: trace histogram [18, 1, 1, 1, 1] [2021-10-13 19:26:08,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-10-13 19:26:08,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-10-13 19:26:08,437 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:26:08,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:26:08,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1026495339, now seen corresponding path program 18 times [2021-10-13 19:26:08,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:26:08,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073239165] [2021-10-13 19:26:08,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:26:08,439 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:26:08,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:26:08,666 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:08,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:26:08,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073239165] [2021-10-13 19:26:08,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073239165] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:08,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226480101] [2021-10-13 19:26:08,667 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:26:08,667 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:08,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:26:08,670 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:26:08,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-13 19:26:08,802 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-10-13 19:26:08,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:26:08,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 19:26:08,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:26:08,877 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:08,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226480101] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:08,878 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:26:08,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-10-13 19:26:08,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066440920] [2021-10-13 19:26:08,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 19:26:08,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:26:08,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 19:26:08,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-10-13 19:26:08,880 INFO L87 Difference]: Start difference. First operand 188 states and 438 transitions. Second operand has 21 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:08,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:26:08,988 INFO L93 Difference]: Finished difference Result 350 states and 815 transitions. [2021-10-13 19:26:08,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 19:26:08,989 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-13 19:26:08,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:26:08,991 INFO L225 Difference]: With dead ends: 350 [2021-10-13 19:26:08,991 INFO L226 Difference]: Without dead ends: 268 [2021-10-13 19:26:08,992 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 146.9ms TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-10-13 19:26:08,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2021-10-13 19:26:08,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 196. [2021-10-13 19:26:08,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 193 states have (on average 2.3678756476683938) internal successors, (457), 195 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:08,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 457 transitions. [2021-10-13 19:26:09,000 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 457 transitions. Word has length 22 [2021-10-13 19:26:09,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:26:09,000 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 457 transitions. [2021-10-13 19:26:09,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:09,000 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 457 transitions. [2021-10-13 19:26:09,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 19:26:09,001 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:26:09,001 INFO L512 BasicCegarLoop]: trace histogram [19, 1, 1, 1, 1] [2021-10-13 19:26:09,034 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-10-13 19:26:09,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-10-13 19:26:09,217 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:26:09,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:26:09,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1756583004, now seen corresponding path program 19 times [2021-10-13 19:26:09,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:26:09,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413601079] [2021-10-13 19:26:09,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:26:09,219 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:26:09,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:26:09,462 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:09,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:26:09,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413601079] [2021-10-13 19:26:09,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413601079] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:09,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966351964] [2021-10-13 19:26:09,463 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:26:09,463 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:09,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:26:09,466 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:26:09,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-13 19:26:09,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:26:09,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 19:26:09,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:26:09,699 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:09,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966351964] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:09,699 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:26:09,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2021-10-13 19:26:09,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343117711] [2021-10-13 19:26:09,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 19:26:09,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:26:09,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 19:26:09,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-10-13 19:26:09,702 INFO L87 Difference]: Start difference. First operand 196 states and 457 transitions. Second operand has 22 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 21 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:09,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:26:09,812 INFO L93 Difference]: Finished difference Result 366 states and 853 transitions. [2021-10-13 19:26:09,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 19:26:09,813 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 21 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-13 19:26:09,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:26:09,815 INFO L225 Difference]: With dead ends: 366 [2021-10-13 19:26:09,815 INFO L226 Difference]: Without dead ends: 280 [2021-10-13 19:26:09,816 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 178.0ms TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-10-13 19:26:09,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-10-13 19:26:09,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 204. [2021-10-13 19:26:09,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 201 states have (on average 2.3681592039800994) internal successors, (476), 203 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:09,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 476 transitions. [2021-10-13 19:26:09,823 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 476 transitions. Word has length 23 [2021-10-13 19:26:09,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:26:09,824 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 476 transitions. [2021-10-13 19:26:09,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 21 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:09,824 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 476 transitions. [2021-10-13 19:26:09,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 19:26:09,825 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:26:09,825 INFO L512 BasicCegarLoop]: trace histogram [20, 1, 1, 1, 1] [2021-10-13 19:26:09,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-10-13 19:26:10,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-10-13 19:26:10,039 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:26:10,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:26:10,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1380503157, now seen corresponding path program 20 times [2021-10-13 19:26:10,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:26:10,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036843891] [2021-10-13 19:26:10,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:26:10,041 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:26:10,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:26:10,293 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:10,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:26:10,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036843891] [2021-10-13 19:26:10,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036843891] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:10,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367243449] [2021-10-13 19:26:10,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:26:10,294 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:10,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:26:10,295 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:26:10,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-13 19:26:10,444 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:26:10,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:26:10,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 19:26:10,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:26:10,516 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:10,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367243449] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:10,516 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:26:10,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2021-10-13 19:26:10,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587410753] [2021-10-13 19:26:10,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 19:26:10,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:26:10,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 19:26:10,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2021-10-13 19:26:10,518 INFO L87 Difference]: Start difference. First operand 204 states and 476 transitions. Second operand has 23 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:10,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:26:10,629 INFO L93 Difference]: Finished difference Result 382 states and 891 transitions. [2021-10-13 19:26:10,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 19:26:10,630 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-13 19:26:10,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:26:10,632 INFO L225 Difference]: With dead ends: 382 [2021-10-13 19:26:10,633 INFO L226 Difference]: Without dead ends: 292 [2021-10-13 19:26:10,633 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 189.0ms TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2021-10-13 19:26:10,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-10-13 19:26:10,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 212. [2021-10-13 19:26:10,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 209 states have (on average 2.3684210526315788) internal successors, (495), 211 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:10,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 495 transitions. [2021-10-13 19:26:10,641 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 495 transitions. Word has length 24 [2021-10-13 19:26:10,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:26:10,641 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 495 transitions. [2021-10-13 19:26:10,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:10,641 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 495 transitions. [2021-10-13 19:26:10,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:26:10,642 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:26:10,642 INFO L512 BasicCegarLoop]: trace histogram [21, 1, 1, 1, 1] [2021-10-13 19:26:10,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-10-13 19:26:10,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-10-13 19:26:10,857 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:26:10,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:26:10,857 INFO L82 PathProgramCache]: Analyzing trace with hash -154073660, now seen corresponding path program 21 times [2021-10-13 19:26:10,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:26:10,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415636797] [2021-10-13 19:26:10,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:26:10,858 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:26:10,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:26:11,110 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:11,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:26:11,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415636797] [2021-10-13 19:26:11,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415636797] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:11,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323961988] [2021-10-13 19:26:11,111 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:26:11,111 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:11,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:26:11,112 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:26:11,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-10-13 19:26:11,267 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-10-13 19:26:11,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:26:11,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 19:26:11,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:26:11,351 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:11,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323961988] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:11,351 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:26:11,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-10-13 19:26:11,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605320584] [2021-10-13 19:26:11,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 19:26:11,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:26:11,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 19:26:11,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-10-13 19:26:11,353 INFO L87 Difference]: Start difference. First operand 212 states and 495 transitions. Second operand has 24 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 23 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:11,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:26:11,526 INFO L93 Difference]: Finished difference Result 398 states and 929 transitions. [2021-10-13 19:26:11,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 19:26:11,526 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 23 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 19:26:11,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:26:11,528 INFO L225 Difference]: With dead ends: 398 [2021-10-13 19:26:11,528 INFO L226 Difference]: Without dead ends: 304 [2021-10-13 19:26:11,529 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 186.5ms TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-10-13 19:26:11,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-10-13 19:26:11,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 220. [2021-10-13 19:26:11,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 217 states have (on average 2.3686635944700463) internal successors, (514), 219 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:11,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 514 transitions. [2021-10-13 19:26:11,537 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 514 transitions. Word has length 25 [2021-10-13 19:26:11,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:26:11,537 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 514 transitions. [2021-10-13 19:26:11,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 23 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:11,537 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 514 transitions. [2021-10-13 19:26:11,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 19:26:11,538 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:26:11,538 INFO L512 BasicCegarLoop]: trace histogram [22, 1, 1, 1, 1] [2021-10-13 19:26:11,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-10-13 19:26:11,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-10-13 19:26:11,752 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:26:11,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:26:11,753 INFO L82 PathProgramCache]: Analyzing trace with hash -481314731, now seen corresponding path program 22 times [2021-10-13 19:26:11,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:26:11,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972542532] [2021-10-13 19:26:11,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:26:11,754 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:26:11,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:26:12,017 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:12,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:26:12,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972542532] [2021-10-13 19:26:12,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972542532] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:12,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307036012] [2021-10-13 19:26:12,018 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:26:12,018 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:12,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:26:12,019 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:26:12,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-13 19:26:12,165 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:26:12,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:26:12,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 19:26:12,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:26:12,242 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:12,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307036012] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:12,242 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:26:12,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2021-10-13 19:26:12,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360348624] [2021-10-13 19:26:12,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 19:26:12,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:26:12,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 19:26:12,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-10-13 19:26:12,244 INFO L87 Difference]: Start difference. First operand 220 states and 514 transitions. Second operand has 25 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 24 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:12,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:26:12,380 INFO L93 Difference]: Finished difference Result 414 states and 967 transitions. [2021-10-13 19:26:12,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 19:26:12,380 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 24 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-13 19:26:12,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:26:12,383 INFO L225 Difference]: With dead ends: 414 [2021-10-13 19:26:12,383 INFO L226 Difference]: Without dead ends: 316 [2021-10-13 19:26:12,384 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 199.3ms TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-10-13 19:26:12,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-10-13 19:26:12,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 228. [2021-10-13 19:26:12,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 225 states have (on average 2.368888888888889) internal successors, (533), 227 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:12,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 533 transitions. [2021-10-13 19:26:12,394 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 533 transitions. Word has length 26 [2021-10-13 19:26:12,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:26:12,394 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 533 transitions. [2021-10-13 19:26:12,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 24 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:12,395 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 533 transitions. [2021-10-13 19:26:12,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-13 19:26:12,396 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:26:12,396 INFO L512 BasicCegarLoop]: trace histogram [23, 1, 1, 1, 1] [2021-10-13 19:26:12,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-10-13 19:26:12,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:12,609 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:26:12,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:26:12,610 INFO L82 PathProgramCache]: Analyzing trace with hash -2035853340, now seen corresponding path program 23 times [2021-10-13 19:26:12,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:26:12,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499451971] [2021-10-13 19:26:12,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:26:12,611 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:26:12,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:26:12,925 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:12,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:26:12,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499451971] [2021-10-13 19:26:12,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499451971] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:12,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971258255] [2021-10-13 19:26:12,926 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:26:12,927 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:12,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:26:12,928 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:26:12,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-10-13 19:26:13,105 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2021-10-13 19:26:13,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:26:13,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-13 19:26:13,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:26:13,205 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:13,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971258255] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:13,206 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:26:13,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2021-10-13 19:26:13,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621371663] [2021-10-13 19:26:13,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 19:26:13,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:26:13,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 19:26:13,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2021-10-13 19:26:13,208 INFO L87 Difference]: Start difference. First operand 228 states and 533 transitions. Second operand has 26 states, 25 states have (on average 1.08) internal successors, (27), 25 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:13,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:26:13,368 INFO L93 Difference]: Finished difference Result 430 states and 1005 transitions. [2021-10-13 19:26:13,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 19:26:13,368 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.08) internal successors, (27), 25 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-13 19:26:13,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:26:13,371 INFO L225 Difference]: With dead ends: 430 [2021-10-13 19:26:13,371 INFO L226 Difference]: Without dead ends: 328 [2021-10-13 19:26:13,372 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 246.1ms TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2021-10-13 19:26:13,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2021-10-13 19:26:13,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 236. [2021-10-13 19:26:13,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 233 states have (on average 2.369098712446352) internal successors, (552), 235 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:13,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 552 transitions. [2021-10-13 19:26:13,380 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 552 transitions. Word has length 27 [2021-10-13 19:26:13,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:26:13,381 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 552 transitions. [2021-10-13 19:26:13,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.08) internal successors, (27), 25 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:13,381 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 552 transitions. [2021-10-13 19:26:13,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-13 19:26:13,382 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:26:13,382 INFO L512 BasicCegarLoop]: trace histogram [24, 1, 1, 1, 1] [2021-10-13 19:26:13,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-10-13 19:26:13,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:13,596 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:26:13,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:26:13,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1313057333, now seen corresponding path program 24 times [2021-10-13 19:26:13,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:26:13,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495954109] [2021-10-13 19:26:13,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:26:13,598 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:26:13,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:26:13,938 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:13,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:26:13,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495954109] [2021-10-13 19:26:13,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495954109] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:13,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134296824] [2021-10-13 19:26:13,939 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:26:13,940 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:13,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:26:13,942 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:26:13,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-10-13 19:26:14,125 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-10-13 19:26:14,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:26:14,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-13 19:26:14,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:26:14,213 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:14,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134296824] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:14,213 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:26:14,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-10-13 19:26:14,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248461562] [2021-10-13 19:26:14,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-13 19:26:14,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:26:14,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-13 19:26:14,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2021-10-13 19:26:14,215 INFO L87 Difference]: Start difference. First operand 236 states and 552 transitions. Second operand has 27 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 26 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:14,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:26:14,391 INFO L93 Difference]: Finished difference Result 446 states and 1043 transitions. [2021-10-13 19:26:14,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 19:26:14,391 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 26 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-13 19:26:14,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:26:14,394 INFO L225 Difference]: With dead ends: 446 [2021-10-13 19:26:14,394 INFO L226 Difference]: Without dead ends: 340 [2021-10-13 19:26:14,395 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 268.4ms TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2021-10-13 19:26:14,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-10-13 19:26:14,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 244. [2021-10-13 19:26:14,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 241 states have (on average 2.3692946058091287) internal successors, (571), 243 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:14,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 571 transitions. [2021-10-13 19:26:14,404 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 571 transitions. Word has length 28 [2021-10-13 19:26:14,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:26:14,405 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 571 transitions. [2021-10-13 19:26:14,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 26 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:14,405 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 571 transitions. [2021-10-13 19:26:14,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-13 19:26:14,406 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:26:14,406 INFO L512 BasicCegarLoop]: trace histogram [25, 1, 1, 1, 1] [2021-10-13 19:26:14,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-10-13 19:26:14,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-10-13 19:26:14,621 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:26:14,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:26:14,621 INFO L82 PathProgramCache]: Analyzing trace with hash 2050073092, now seen corresponding path program 25 times [2021-10-13 19:26:14,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:26:14,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892349121] [2021-10-13 19:26:14,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:26:14,622 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:26:14,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:26:14,987 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:14,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:26:14,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892349121] [2021-10-13 19:26:14,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892349121] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:14,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066943003] [2021-10-13 19:26:14,988 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:26:14,988 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:14,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:26:14,993 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:26:15,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-10-13 19:26:15,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:26:15,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-13 19:26:15,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:26:15,243 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:15,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066943003] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:15,244 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:26:15,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2021-10-13 19:26:15,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442679004] [2021-10-13 19:26:15,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-13 19:26:15,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:26:15,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-13 19:26:15,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2021-10-13 19:26:15,245 INFO L87 Difference]: Start difference. First operand 244 states and 571 transitions. Second operand has 28 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 27 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:15,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:26:15,427 INFO L93 Difference]: Finished difference Result 462 states and 1081 transitions. [2021-10-13 19:26:15,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 19:26:15,427 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 27 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-10-13 19:26:15,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:26:15,429 INFO L225 Difference]: With dead ends: 462 [2021-10-13 19:26:15,429 INFO L226 Difference]: Without dead ends: 352 [2021-10-13 19:26:15,430 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 285.7ms TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2021-10-13 19:26:15,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2021-10-13 19:26:15,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 252. [2021-10-13 19:26:15,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 249 states have (on average 2.3694779116465865) internal successors, (590), 251 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:15,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 590 transitions. [2021-10-13 19:26:15,439 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 590 transitions. Word has length 29 [2021-10-13 19:26:15,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:26:15,440 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 590 transitions. [2021-10-13 19:26:15,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 27 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:15,440 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 590 transitions. [2021-10-13 19:26:15,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-13 19:26:15,441 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:26:15,441 INFO L512 BasicCegarLoop]: trace histogram [26, 1, 1, 1, 1] [2021-10-13 19:26:15,475 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2021-10-13 19:26:15,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-10-13 19:26:15,655 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:26:15,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:26:15,655 INFO L82 PathProgramCache]: Analyzing trace with hash -872242155, now seen corresponding path program 26 times [2021-10-13 19:26:15,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:26:15,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546832719] [2021-10-13 19:26:15,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:26:15,656 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:26:15,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:26:16,008 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:16,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:26:16,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546832719] [2021-10-13 19:26:16,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546832719] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:16,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637728664] [2021-10-13 19:26:16,009 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:26:16,009 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:16,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:26:16,010 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:26:16,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-10-13 19:26:16,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:26:16,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:26:16,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-13 19:26:16,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:26:16,289 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:16,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637728664] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:16,289 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:26:16,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2021-10-13 19:26:16,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301467283] [2021-10-13 19:26:16,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-10-13 19:26:16,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:26:16,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-10-13 19:26:16,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2021-10-13 19:26:16,292 INFO L87 Difference]: Start difference. First operand 252 states and 590 transitions. Second operand has 29 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 28 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:16,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:26:16,484 INFO L93 Difference]: Finished difference Result 478 states and 1119 transitions. [2021-10-13 19:26:16,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-13 19:26:16,485 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 28 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-13 19:26:16,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:26:16,488 INFO L225 Difference]: With dead ends: 478 [2021-10-13 19:26:16,488 INFO L226 Difference]: Without dead ends: 364 [2021-10-13 19:26:16,488 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 276.4ms TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2021-10-13 19:26:16,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2021-10-13 19:26:16,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 260. [2021-10-13 19:26:16,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 257 states have (on average 2.369649805447471) internal successors, (609), 259 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:16,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 609 transitions. [2021-10-13 19:26:16,502 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 609 transitions. Word has length 30 [2021-10-13 19:26:16,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:26:16,502 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 609 transitions. [2021-10-13 19:26:16,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 28 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:16,502 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 609 transitions. [2021-10-13 19:26:16,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-13 19:26:16,503 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:26:16,504 INFO L512 BasicCegarLoop]: trace histogram [27, 1, 1, 1, 1] [2021-10-13 19:26:16,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-10-13 19:26:16,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:16,720 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:26:16,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:26:16,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1269701596, now seen corresponding path program 27 times [2021-10-13 19:26:16,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:26:16,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478540379] [2021-10-13 19:26:16,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:26:16,721 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:26:16,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:26:17,131 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:17,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:26:17,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478540379] [2021-10-13 19:26:17,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478540379] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:17,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500871391] [2021-10-13 19:26:17,132 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:26:17,132 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:17,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:26:17,133 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:26:17,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-10-13 19:26:17,367 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-10-13 19:26:17,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:26:17,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-13 19:26:17,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:26:17,459 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:17,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500871391] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:17,460 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:26:17,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2021-10-13 19:26:17,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791110043] [2021-10-13 19:26:17,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-13 19:26:17,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:26:17,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-13 19:26:17,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2021-10-13 19:26:17,462 INFO L87 Difference]: Start difference. First operand 260 states and 609 transitions. Second operand has 30 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 29 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:17,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:26:17,647 INFO L93 Difference]: Finished difference Result 494 states and 1157 transitions. [2021-10-13 19:26:17,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 19:26:17,647 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 29 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-10-13 19:26:17,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:26:17,650 INFO L225 Difference]: With dead ends: 494 [2021-10-13 19:26:17,651 INFO L226 Difference]: Without dead ends: 376 [2021-10-13 19:26:17,651 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 333.4ms TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2021-10-13 19:26:17,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-10-13 19:26:17,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 268. [2021-10-13 19:26:17,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 265 states have (on average 2.369811320754717) internal successors, (628), 267 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:17,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 628 transitions. [2021-10-13 19:26:17,662 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 628 transitions. Word has length 31 [2021-10-13 19:26:17,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:26:17,662 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 628 transitions. [2021-10-13 19:26:17,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 29 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:17,662 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 628 transitions. [2021-10-13 19:26:17,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-13 19:26:17,663 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:26:17,663 INFO L512 BasicCegarLoop]: trace histogram [28, 1, 1, 1, 1] [2021-10-13 19:26:17,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-10-13 19:26:17,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-10-13 19:26:17,880 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:26:17,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:26:17,880 INFO L82 PathProgramCache]: Analyzing trace with hash -706042379, now seen corresponding path program 28 times [2021-10-13 19:26:17,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:26:17,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548680802] [2021-10-13 19:26:17,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:26:17,881 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:26:17,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:26:18,291 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:18,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:26:18,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548680802] [2021-10-13 19:26:18,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548680802] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:18,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249149996] [2021-10-13 19:26:18,292 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:26:18,292 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:18,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:26:18,294 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:26:18,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-10-13 19:26:18,503 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:26:18,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:26:18,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-13 19:26:18,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:26:18,604 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:18,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249149996] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:18,605 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:26:18,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2021-10-13 19:26:18,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428850030] [2021-10-13 19:26:18,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-10-13 19:26:18,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:26:18,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-10-13 19:26:18,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2021-10-13 19:26:18,608 INFO L87 Difference]: Start difference. First operand 268 states and 628 transitions. Second operand has 31 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 30 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:18,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:26:18,800 INFO L93 Difference]: Finished difference Result 510 states and 1195 transitions. [2021-10-13 19:26:18,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-13 19:26:18,800 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 30 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-13 19:26:18,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:26:18,803 INFO L225 Difference]: With dead ends: 510 [2021-10-13 19:26:18,803 INFO L226 Difference]: Without dead ends: 388 [2021-10-13 19:26:18,804 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 313.3ms TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2021-10-13 19:26:18,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2021-10-13 19:26:18,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 276. [2021-10-13 19:26:18,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 273 states have (on average 2.36996336996337) internal successors, (647), 275 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:18,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 647 transitions. [2021-10-13 19:26:18,813 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 647 transitions. Word has length 32 [2021-10-13 19:26:18,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:26:18,814 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 647 transitions. [2021-10-13 19:26:18,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 30 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:18,814 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 647 transitions. [2021-10-13 19:26:18,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-13 19:26:18,815 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:26:18,815 INFO L512 BasicCegarLoop]: trace histogram [29, 1, 1, 1, 1] [2021-10-13 19:26:18,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-10-13 19:26:19,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,32 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:19,028 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:26:19,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:26:19,029 INFO L82 PathProgramCache]: Analyzing trace with hash -412475836, now seen corresponding path program 29 times [2021-10-13 19:26:19,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:26:19,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234772894] [2021-10-13 19:26:19,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:26:19,030 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:26:19,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:26:19,507 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:19,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:26:19,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234772894] [2021-10-13 19:26:19,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234772894] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:19,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891527664] [2021-10-13 19:26:19,508 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:26:19,508 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:19,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:26:19,509 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:26:19,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-10-13 19:26:19,737 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2021-10-13 19:26:19,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:26:19,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-13 19:26:19,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:26:19,828 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:19,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891527664] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:19,829 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:26:19,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2021-10-13 19:26:19,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480563953] [2021-10-13 19:26:19,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-13 19:26:19,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:26:19,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-13 19:26:19,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2021-10-13 19:26:19,832 INFO L87 Difference]: Start difference. First operand 276 states and 647 transitions. Second operand has 32 states, 31 states have (on average 1.064516129032258) internal successors, (33), 31 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:20,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:26:20,003 INFO L93 Difference]: Finished difference Result 526 states and 1233 transitions. [2021-10-13 19:26:20,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 19:26:20,004 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.064516129032258) internal successors, (33), 31 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-10-13 19:26:20,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:26:20,007 INFO L225 Difference]: With dead ends: 526 [2021-10-13 19:26:20,007 INFO L226 Difference]: Without dead ends: 400 [2021-10-13 19:26:20,007 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 352.9ms TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2021-10-13 19:26:20,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2021-10-13 19:26:20,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 284. [2021-10-13 19:26:20,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 281 states have (on average 2.3701067615658364) internal successors, (666), 283 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:20,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 666 transitions. [2021-10-13 19:26:20,018 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 666 transitions. Word has length 33 [2021-10-13 19:26:20,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:26:20,018 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 666 transitions. [2021-10-13 19:26:20,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.064516129032258) internal successors, (33), 31 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:20,019 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 666 transitions. [2021-10-13 19:26:20,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-13 19:26:20,019 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:26:20,020 INFO L512 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1] [2021-10-13 19:26:20,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-10-13 19:26:20,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:20,235 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:26:20,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:26:20,235 INFO L82 PathProgramCache]: Analyzing trace with hash 98152405, now seen corresponding path program 30 times [2021-10-13 19:26:20,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:26:20,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996064528] [2021-10-13 19:26:20,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:26:20,237 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:26:20,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:26:20,780 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:20,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:26:20,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996064528] [2021-10-13 19:26:20,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996064528] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:20,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659530597] [2021-10-13 19:26:20,782 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:26:20,782 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:20,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:26:20,786 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:26:20,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-10-13 19:26:21,058 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2021-10-13 19:26:21,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:26:21,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-13 19:26:21,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:26:21,157 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:21,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659530597] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:21,158 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:26:21,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2021-10-13 19:26:21,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492650588] [2021-10-13 19:26:21,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-10-13 19:26:21,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:26:21,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-10-13 19:26:21,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2021-10-13 19:26:21,160 INFO L87 Difference]: Start difference. First operand 284 states and 666 transitions. Second operand has 33 states, 32 states have (on average 1.0625) internal successors, (34), 32 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:21,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:26:21,368 INFO L93 Difference]: Finished difference Result 542 states and 1271 transitions. [2021-10-13 19:26:21,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-13 19:26:21,368 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.0625) internal successors, (34), 32 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-10-13 19:26:21,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:26:21,373 INFO L225 Difference]: With dead ends: 542 [2021-10-13 19:26:21,373 INFO L226 Difference]: Without dead ends: 412 [2021-10-13 19:26:21,374 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 457.3ms TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2021-10-13 19:26:21,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2021-10-13 19:26:21,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 292. [2021-10-13 19:26:21,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 289 states have (on average 2.370242214532872) internal successors, (685), 291 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:21,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 685 transitions. [2021-10-13 19:26:21,385 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 685 transitions. Word has length 34 [2021-10-13 19:26:21,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:26:21,385 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 685 transitions. [2021-10-13 19:26:21,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 1.0625) internal successors, (34), 32 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:21,386 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 685 transitions. [2021-10-13 19:26:21,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 19:26:21,387 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:26:21,387 INFO L512 BasicCegarLoop]: trace histogram [31, 1, 1, 1, 1] [2021-10-13 19:26:21,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-10-13 19:26:21,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-10-13 19:26:21,600 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:26:21,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:26:21,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1252241308, now seen corresponding path program 31 times [2021-10-13 19:26:21,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:26:21,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427426214] [2021-10-13 19:26:21,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:26:21,602 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:26:21,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:26:22,095 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:22,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:26:22,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427426214] [2021-10-13 19:26:22,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427426214] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:22,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701437890] [2021-10-13 19:26:22,096 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:26:22,096 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:22,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:26:22,097 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:26:22,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-10-13 19:26:22,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:26:22,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-13 19:26:22,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:26:22,463 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:22,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701437890] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:22,464 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:26:22,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-10-13 19:26:22,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847634851] [2021-10-13 19:26:22,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-10-13 19:26:22,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:26:22,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-10-13 19:26:22,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 19:26:22,466 INFO L87 Difference]: Start difference. First operand 292 states and 685 transitions. Second operand has 34 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 33 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:22,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:26:22,680 INFO L93 Difference]: Finished difference Result 558 states and 1309 transitions. [2021-10-13 19:26:22,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-13 19:26:22,681 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 33 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 19:26:22,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:26:22,684 INFO L225 Difference]: With dead ends: 558 [2021-10-13 19:26:22,684 INFO L226 Difference]: Without dead ends: 424 [2021-10-13 19:26:22,685 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 407.6ms TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 19:26:22,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2021-10-13 19:26:22,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 300. [2021-10-13 19:26:22,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 297 states have (on average 2.3703703703703702) internal successors, (704), 299 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:22,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 704 transitions. [2021-10-13 19:26:22,700 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 704 transitions. Word has length 35 [2021-10-13 19:26:22,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:26:22,700 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 704 transitions. [2021-10-13 19:26:22,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 33 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:22,700 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 704 transitions. [2021-10-13 19:26:22,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-13 19:26:22,701 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:26:22,701 INFO L512 BasicCegarLoop]: trace histogram [32, 1, 1, 1, 1] [2021-10-13 19:26:22,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-10-13 19:26:22,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-10-13 19:26:22,903 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:26:22,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:26:22,904 INFO L82 PathProgramCache]: Analyzing trace with hash -164773451, now seen corresponding path program 32 times [2021-10-13 19:26:22,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:26:22,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757382366] [2021-10-13 19:26:22,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:26:22,905 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:26:22,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:26:23,418 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:23,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:26:23,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757382366] [2021-10-13 19:26:23,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757382366] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:23,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459181300] [2021-10-13 19:26:23,419 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:26:23,419 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:23,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:26:23,421 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:26:23,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-10-13 19:26:23,672 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:26:23,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:26:23,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-13 19:26:23,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:26:23,806 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:23,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459181300] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:23,807 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:26:23,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2021-10-13 19:26:23,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998518350] [2021-10-13 19:26:23,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-10-13 19:26:23,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:26:23,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-10-13 19:26:23,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2021-10-13 19:26:23,810 INFO L87 Difference]: Start difference. First operand 300 states and 704 transitions. Second operand has 35 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 34 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:24,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:26:24,035 INFO L93 Difference]: Finished difference Result 574 states and 1347 transitions. [2021-10-13 19:26:24,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-13 19:26:24,036 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 34 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-10-13 19:26:24,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:26:24,038 INFO L225 Difference]: With dead ends: 574 [2021-10-13 19:26:24,038 INFO L226 Difference]: Without dead ends: 436 [2021-10-13 19:26:24,039 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 427.6ms TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2021-10-13 19:26:24,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2021-10-13 19:26:24,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 308. [2021-10-13 19:26:24,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 305 states have (on average 2.3704918032786884) internal successors, (723), 307 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:24,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 723 transitions. [2021-10-13 19:26:24,050 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 723 transitions. Word has length 36 [2021-10-13 19:26:24,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:26:24,050 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 723 transitions. [2021-10-13 19:26:24,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 34 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:24,050 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 723 transitions. [2021-10-13 19:26:24,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 19:26:24,052 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:26:24,052 INFO L512 BasicCegarLoop]: trace histogram [33, 1, 1, 1, 1] [2021-10-13 19:26:24,088 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2021-10-13 19:26:24,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-10-13 19:26:24,266 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:26:24,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:26:24,266 INFO L82 PathProgramCache]: Analyzing trace with hash -813008252, now seen corresponding path program 33 times [2021-10-13 19:26:24,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:26:24,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575909928] [2021-10-13 19:26:24,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:26:24,267 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:26:24,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:26:24,830 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:24,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:26:24,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575909928] [2021-10-13 19:26:24,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575909928] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:24,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562586550] [2021-10-13 19:26:24,831 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:26:24,831 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:24,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:26:24,832 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:26:24,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-10-13 19:26:25,103 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2021-10-13 19:26:25,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:26:25,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-13 19:26:25,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:26:25,204 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:25,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562586550] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:25,204 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:26:25,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2021-10-13 19:26:25,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476920149] [2021-10-13 19:26:25,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-10-13 19:26:25,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:26:25,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-10-13 19:26:25,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 19:26:25,207 INFO L87 Difference]: Start difference. First operand 308 states and 723 transitions. Second operand has 36 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 35 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:25,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:26:25,504 INFO L93 Difference]: Finished difference Result 590 states and 1385 transitions. [2021-10-13 19:26:25,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 19:26:25,504 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 35 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-13 19:26:25,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:26:25,507 INFO L225 Difference]: With dead ends: 590 [2021-10-13 19:26:25,508 INFO L226 Difference]: Without dead ends: 448 [2021-10-13 19:26:25,508 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 468.0ms TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 19:26:25,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2021-10-13 19:26:25,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 316. [2021-10-13 19:26:25,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 313 states have (on average 2.3706070287539935) internal successors, (742), 315 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:25,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 742 transitions. [2021-10-13 19:26:25,520 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 742 transitions. Word has length 37 [2021-10-13 19:26:25,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:26:25,521 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 742 transitions. [2021-10-13 19:26:25,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 35 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:25,521 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 742 transitions. [2021-10-13 19:26:25,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 19:26:25,523 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:26:25,523 INFO L512 BasicCegarLoop]: trace histogram [34, 1, 1, 1, 1] [2021-10-13 19:26:25,564 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2021-10-13 19:26:25,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:25,737 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:26:25,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:26:25,738 INFO L82 PathProgramCache]: Analyzing trace with hash 566549397, now seen corresponding path program 34 times [2021-10-13 19:26:25,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:26:25,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912569028] [2021-10-13 19:26:25,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:26:25,739 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:26:25,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:26:26,353 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:26,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:26:26,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912569028] [2021-10-13 19:26:26,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912569028] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:26,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638708583] [2021-10-13 19:26:26,354 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:26:26,355 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:26,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:26:26,356 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:26:26,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-10-13 19:26:26,633 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:26:26,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:26:26,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-13 19:26:26,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:26:26,747 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:26,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638708583] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:26,748 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:26:26,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2021-10-13 19:26:26,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511056015] [2021-10-13 19:26:26,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-10-13 19:26:26,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:26:26,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-10-13 19:26:26,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2021-10-13 19:26:26,750 INFO L87 Difference]: Start difference. First operand 316 states and 742 transitions. Second operand has 37 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 36 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:27,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:26:27,004 INFO L93 Difference]: Finished difference Result 606 states and 1423 transitions. [2021-10-13 19:26:27,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-13 19:26:27,004 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 36 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 19:26:27,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:26:27,007 INFO L225 Difference]: With dead ends: 606 [2021-10-13 19:26:27,007 INFO L226 Difference]: Without dead ends: 460 [2021-10-13 19:26:27,008 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 524.6ms TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2021-10-13 19:26:27,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2021-10-13 19:26:27,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 324. [2021-10-13 19:26:27,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 321 states have (on average 2.370716510903427) internal successors, (761), 323 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:27,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 761 transitions. [2021-10-13 19:26:27,018 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 761 transitions. Word has length 38 [2021-10-13 19:26:27,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:26:27,019 INFO L470 AbstractCegarLoop]: Abstraction has 324 states and 761 transitions. [2021-10-13 19:26:27,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 36 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:27,019 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 761 transitions. [2021-10-13 19:26:27,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-13 19:26:27,020 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:26:27,020 INFO L512 BasicCegarLoop]: trace histogram [35, 1, 1, 1, 1] [2021-10-13 19:26:27,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-10-13 19:26:27,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,38 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:27,236 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:26:27,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:26:27,236 INFO L82 PathProgramCache]: Analyzing trace with hash 383163556, now seen corresponding path program 35 times [2021-10-13 19:26:27,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:26:27,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295791420] [2021-10-13 19:26:27,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:26:27,237 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:26:27,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:26:27,866 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:27,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:26:27,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295791420] [2021-10-13 19:26:27,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295791420] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:27,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100622774] [2021-10-13 19:26:27,867 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:26:27,867 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:27,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:26:27,868 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:26:27,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-10-13 19:26:28,163 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2021-10-13 19:26:28,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:26:28,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-13 19:26:28,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:26:28,288 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:28,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100622774] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:28,289 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:26:28,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-10-13 19:26:28,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218617627] [2021-10-13 19:26:28,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-10-13 19:26:28,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:26:28,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-10-13 19:26:28,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 19:26:28,291 INFO L87 Difference]: Start difference. First operand 324 states and 761 transitions. Second operand has 38 states, 37 states have (on average 1.054054054054054) internal successors, (39), 37 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:28,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:26:28,545 INFO L93 Difference]: Finished difference Result 622 states and 1461 transitions. [2021-10-13 19:26:28,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-13 19:26:28,545 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 1.054054054054054) internal successors, (39), 37 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-10-13 19:26:28,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:26:28,548 INFO L225 Difference]: With dead ends: 622 [2021-10-13 19:26:28,549 INFO L226 Difference]: Without dead ends: 472 [2021-10-13 19:26:28,550 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 531.8ms TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 19:26:28,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2021-10-13 19:26:28,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 332. [2021-10-13 19:26:28,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 329 states have (on average 2.370820668693009) internal successors, (780), 331 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:28,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 780 transitions. [2021-10-13 19:26:28,560 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 780 transitions. Word has length 39 [2021-10-13 19:26:28,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:26:28,560 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 780 transitions. [2021-10-13 19:26:28,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 1.054054054054054) internal successors, (39), 37 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:28,560 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 780 transitions. [2021-10-13 19:26:28,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-13 19:26:28,562 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:26:28,562 INFO L512 BasicCegarLoop]: trace histogram [36, 1, 1, 1, 1] [2021-10-13 19:26:28,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2021-10-13 19:26:28,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:28,776 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:26:28,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:26:28,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1006830219, now seen corresponding path program 36 times [2021-10-13 19:26:28,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:26:28,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904226208] [2021-10-13 19:26:28,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:26:28,778 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:26:28,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:26:29,417 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:29,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:26:29,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904226208] [2021-10-13 19:26:29,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904226208] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:29,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30369856] [2021-10-13 19:26:29,418 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:26:29,418 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:29,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:26:29,419 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:26:29,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-10-13 19:26:29,743 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-10-13 19:26:29,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:26:29,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 39 conjunts are in the unsatisfiable core [2021-10-13 19:26:29,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:26:29,863 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:29,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30369856] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:29,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:26:29,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2021-10-13 19:26:29,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356250947] [2021-10-13 19:26:29,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-10-13 19:26:29,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:26:29,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-10-13 19:26:29,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 19:26:29,866 INFO L87 Difference]: Start difference. First operand 332 states and 780 transitions. Second operand has 39 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 38 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:30,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:26:30,140 INFO L93 Difference]: Finished difference Result 638 states and 1499 transitions. [2021-10-13 19:26:30,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-13 19:26:30,141 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 38 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-10-13 19:26:30,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:26:30,143 INFO L225 Difference]: With dead ends: 638 [2021-10-13 19:26:30,143 INFO L226 Difference]: Without dead ends: 484 [2021-10-13 19:26:30,144 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 540.4ms TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 19:26:30,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2021-10-13 19:26:30,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 340. [2021-10-13 19:26:30,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 337 states have (on average 2.370919881305638) internal successors, (799), 339 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:30,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 799 transitions. [2021-10-13 19:26:30,154 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 799 transitions. Word has length 40 [2021-10-13 19:26:30,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:26:30,155 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 799 transitions. [2021-10-13 19:26:30,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 38 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:30,155 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 799 transitions. [2021-10-13 19:26:30,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-13 19:26:30,156 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:26:30,156 INFO L512 BasicCegarLoop]: trace histogram [37, 1, 1, 1, 1] [2021-10-13 19:26:30,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2021-10-13 19:26:30,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,40 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:30,370 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:26:30,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:26:30,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1146964284, now seen corresponding path program 37 times [2021-10-13 19:26:30,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:26:30,371 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126277738] [2021-10-13 19:26:30,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:26:30,372 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:26:30,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:26:31,088 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:31,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:26:31,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126277738] [2021-10-13 19:26:31,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126277738] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:31,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511223392] [2021-10-13 19:26:31,089 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:26:31,090 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:31,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:26:31,091 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:26:31,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-10-13 19:26:31,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:26:31,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 40 conjunts are in the unsatisfiable core [2021-10-13 19:26:31,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:26:31,522 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:31,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511223392] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:31,522 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:26:31,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2021-10-13 19:26:31,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703591704] [2021-10-13 19:26:31,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-10-13 19:26:31,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:26:31,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-10-13 19:26:31,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 19:26:31,524 INFO L87 Difference]: Start difference. First operand 340 states and 799 transitions. Second operand has 40 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 39 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:31,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:26:31,827 INFO L93 Difference]: Finished difference Result 654 states and 1537 transitions. [2021-10-13 19:26:31,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-13 19:26:31,828 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 39 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-10-13 19:26:31,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:26:31,831 INFO L225 Difference]: With dead ends: 654 [2021-10-13 19:26:31,831 INFO L226 Difference]: Without dead ends: 496 [2021-10-13 19:26:31,831 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 621.0ms TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 19:26:31,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2021-10-13 19:26:31,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 348. [2021-10-13 19:26:31,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 345 states have (on average 2.371014492753623) internal successors, (818), 347 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:31,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 818 transitions. [2021-10-13 19:26:31,842 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 818 transitions. Word has length 41 [2021-10-13 19:26:31,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:26:31,843 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 818 transitions. [2021-10-13 19:26:31,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 39 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:31,843 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 818 transitions. [2021-10-13 19:26:31,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-13 19:26:31,844 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:26:31,844 INFO L512 BasicCegarLoop]: trace histogram [38, 1, 1, 1, 1] [2021-10-13 19:26:31,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2021-10-13 19:26:32,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,41 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:32,059 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:26:32,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:26:32,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1196153003, now seen corresponding path program 38 times [2021-10-13 19:26:32,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:26:32,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237489331] [2021-10-13 19:26:32,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:26:32,060 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:26:32,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:26:32,826 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:32,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:26:32,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237489331] [2021-10-13 19:26:32,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237489331] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:32,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722998399] [2021-10-13 19:26:32,827 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:26:32,827 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:32,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:26:32,828 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:26:32,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-10-13 19:26:33,155 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:26:33,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:26:33,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 41 conjunts are in the unsatisfiable core [2021-10-13 19:26:33,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:26:33,270 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:33,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722998399] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:33,270 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:26:33,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2021-10-13 19:26:33,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780380474] [2021-10-13 19:26:33,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-10-13 19:26:33,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:26:33,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-10-13 19:26:33,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2021-10-13 19:26:33,273 INFO L87 Difference]: Start difference. First operand 348 states and 818 transitions. Second operand has 41 states, 40 states have (on average 1.05) internal successors, (42), 40 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:33,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:26:33,584 INFO L93 Difference]: Finished difference Result 670 states and 1575 transitions. [2021-10-13 19:26:33,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-13 19:26:33,584 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 1.05) internal successors, (42), 40 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-10-13 19:26:33,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:26:33,588 INFO L225 Difference]: With dead ends: 670 [2021-10-13 19:26:33,588 INFO L226 Difference]: Without dead ends: 508 [2021-10-13 19:26:33,589 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 663.2ms TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2021-10-13 19:26:33,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2021-10-13 19:26:33,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 356. [2021-10-13 19:26:33,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 353 states have (on average 2.3711048158640224) internal successors, (837), 355 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:33,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 837 transitions. [2021-10-13 19:26:33,599 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 837 transitions. Word has length 42 [2021-10-13 19:26:33,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:26:33,600 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 837 transitions. [2021-10-13 19:26:33,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 1.05) internal successors, (42), 40 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:33,600 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 837 transitions. [2021-10-13 19:26:33,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-10-13 19:26:33,601 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:26:33,601 INFO L512 BasicCegarLoop]: trace histogram [39, 1, 1, 1, 1] [2021-10-13 19:26:33,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2021-10-13 19:26:33,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-10-13 19:26:33,815 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:26:33,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:26:33,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1573964004, now seen corresponding path program 39 times [2021-10-13 19:26:33,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:26:33,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214582683] [2021-10-13 19:26:33,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:26:33,817 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:26:33,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:26:34,590 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:34,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:26:34,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214582683] [2021-10-13 19:26:34,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214582683] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:34,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285144797] [2021-10-13 19:26:34,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:26:34,594 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:34,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:26:34,595 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:26:34,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-10-13 19:26:34,959 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2021-10-13 19:26:34,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:26:34,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 42 conjunts are in the unsatisfiable core [2021-10-13 19:26:34,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:26:35,083 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:35,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285144797] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:35,083 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:26:35,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2021-10-13 19:26:35,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746533237] [2021-10-13 19:26:35,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-10-13 19:26:35,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:26:35,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-10-13 19:26:35,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2021-10-13 19:26:35,085 INFO L87 Difference]: Start difference. First operand 356 states and 837 transitions. Second operand has 42 states, 41 states have (on average 1.048780487804878) internal successors, (43), 41 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:35,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:26:35,392 INFO L93 Difference]: Finished difference Result 686 states and 1613 transitions. [2021-10-13 19:26:35,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-13 19:26:35,393 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 1.048780487804878) internal successors, (43), 41 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-10-13 19:26:35,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:26:35,396 INFO L225 Difference]: With dead ends: 686 [2021-10-13 19:26:35,396 INFO L226 Difference]: Without dead ends: 520 [2021-10-13 19:26:35,396 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 660.6ms TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2021-10-13 19:26:35,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2021-10-13 19:26:35,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 364. [2021-10-13 19:26:35,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 361 states have (on average 2.371191135734072) internal successors, (856), 363 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:35,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 856 transitions. [2021-10-13 19:26:35,407 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 856 transitions. Word has length 43 [2021-10-13 19:26:35,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:26:35,407 INFO L470 AbstractCegarLoop]: Abstraction has 364 states and 856 transitions. [2021-10-13 19:26:35,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 1.048780487804878) internal successors, (43), 41 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:35,408 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 856 transitions. [2021-10-13 19:26:35,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-13 19:26:35,409 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:26:35,409 INFO L512 BasicCegarLoop]: trace histogram [40, 1, 1, 1, 1] [2021-10-13 19:26:35,444 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2021-10-13 19:26:35,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-10-13 19:26:35,622 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:26:35,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:26:35,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1548245301, now seen corresponding path program 40 times [2021-10-13 19:26:35,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:26:35,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093575456] [2021-10-13 19:26:35,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:26:35,624 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:26:35,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:26:36,567 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:36,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:26:36,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093575456] [2021-10-13 19:26:36,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093575456] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:36,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086798027] [2021-10-13 19:26:36,569 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:26:36,569 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:36,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:26:36,570 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:26:36,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-10-13 19:26:36,918 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:26:36,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:26:36,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 43 conjunts are in the unsatisfiable core [2021-10-13 19:26:36,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:26:37,043 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:37,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086798027] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:37,043 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:26:37,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2021-10-13 19:26:37,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43962978] [2021-10-13 19:26:37,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-10-13 19:26:37,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:26:37,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-10-13 19:26:37,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2021-10-13 19:26:37,046 INFO L87 Difference]: Start difference. First operand 364 states and 856 transitions. Second operand has 43 states, 42 states have (on average 1.0476190476190477) internal successors, (44), 42 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:37,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:26:37,401 INFO L93 Difference]: Finished difference Result 702 states and 1651 transitions. [2021-10-13 19:26:37,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-13 19:26:37,402 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 1.0476190476190477) internal successors, (44), 42 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-10-13 19:26:37,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:26:37,405 INFO L225 Difference]: With dead ends: 702 [2021-10-13 19:26:37,405 INFO L226 Difference]: Without dead ends: 532 [2021-10-13 19:26:37,406 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 748.8ms TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2021-10-13 19:26:37,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2021-10-13 19:26:37,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 372. [2021-10-13 19:26:37,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 369 states have (on average 2.3712737127371275) internal successors, (875), 371 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:37,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 875 transitions. [2021-10-13 19:26:37,416 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 875 transitions. Word has length 44 [2021-10-13 19:26:37,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:26:37,417 INFO L470 AbstractCegarLoop]: Abstraction has 372 states and 875 transitions. [2021-10-13 19:26:37,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 1.0476190476190477) internal successors, (44), 42 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:37,417 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 875 transitions. [2021-10-13 19:26:37,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-13 19:26:37,418 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:26:37,419 INFO L512 BasicCegarLoop]: trace histogram [41, 1, 1, 1, 1] [2021-10-13 19:26:37,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2021-10-13 19:26:37,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,44 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:37,634 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:26:37,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:26:37,634 INFO L82 PathProgramCache]: Analyzing trace with hash 750965508, now seen corresponding path program 41 times [2021-10-13 19:26:37,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:26:37,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277030644] [2021-10-13 19:26:37,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:26:37,635 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:26:37,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:26:38,477 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:38,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:26:38,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277030644] [2021-10-13 19:26:38,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277030644] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:38,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009179154] [2021-10-13 19:26:38,478 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:26:38,478 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:38,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:26:38,479 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:26:38,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-10-13 19:26:38,856 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2021-10-13 19:26:38,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:26:38,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 44 conjunts are in the unsatisfiable core [2021-10-13 19:26:38,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:26:38,969 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:38,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009179154] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:38,970 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:26:38,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2021-10-13 19:26:38,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133301997] [2021-10-13 19:26:38,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-10-13 19:26:38,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:26:38,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-10-13 19:26:38,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2021-10-13 19:26:38,973 INFO L87 Difference]: Start difference. First operand 372 states and 875 transitions. Second operand has 44 states, 43 states have (on average 1.0465116279069768) internal successors, (45), 43 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:39,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:26:39,321 INFO L93 Difference]: Finished difference Result 718 states and 1689 transitions. [2021-10-13 19:26:39,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-13 19:26:39,322 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 1.0465116279069768) internal successors, (45), 43 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-10-13 19:26:39,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:26:39,326 INFO L225 Difference]: With dead ends: 718 [2021-10-13 19:26:39,326 INFO L226 Difference]: Without dead ends: 544 [2021-10-13 19:26:39,327 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 739.6ms TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2021-10-13 19:26:39,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2021-10-13 19:26:39,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 380. [2021-10-13 19:26:39,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 377 states have (on average 2.3713527851458887) internal successors, (894), 379 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:39,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 894 transitions. [2021-10-13 19:26:39,338 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 894 transitions. Word has length 45 [2021-10-13 19:26:39,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:26:39,338 INFO L470 AbstractCegarLoop]: Abstraction has 380 states and 894 transitions. [2021-10-13 19:26:39,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 1.0465116279069768) internal successors, (45), 43 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:39,338 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 894 transitions. [2021-10-13 19:26:39,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-13 19:26:39,340 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:26:39,340 INFO L512 BasicCegarLoop]: trace histogram [42, 1, 1, 1, 1] [2021-10-13 19:26:39,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2021-10-13 19:26:39,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-10-13 19:26:39,550 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:26:39,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:26:39,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1805095701, now seen corresponding path program 42 times [2021-10-13 19:26:39,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:26:39,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892505750] [2021-10-13 19:26:39,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:26:39,552 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:26:39,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:26:40,451 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:40,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:26:40,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892505750] [2021-10-13 19:26:40,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892505750] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:40,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465101769] [2021-10-13 19:26:40,452 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:26:40,452 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:40,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:26:40,454 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:26:40,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-10-13 19:26:40,858 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2021-10-13 19:26:40,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:26:40,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 45 conjunts are in the unsatisfiable core [2021-10-13 19:26:40,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:26:40,985 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:40,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465101769] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:40,986 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:26:40,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2021-10-13 19:26:40,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602839341] [2021-10-13 19:26:40,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-10-13 19:26:40,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:26:40,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-10-13 19:26:40,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2021-10-13 19:26:40,988 INFO L87 Difference]: Start difference. First operand 380 states and 894 transitions. Second operand has 45 states, 44 states have (on average 1.0454545454545454) internal successors, (46), 44 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:41,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:26:41,331 INFO L93 Difference]: Finished difference Result 734 states and 1727 transitions. [2021-10-13 19:26:41,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-13 19:26:41,331 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 1.0454545454545454) internal successors, (46), 44 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-10-13 19:26:41,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:26:41,334 INFO L225 Difference]: With dead ends: 734 [2021-10-13 19:26:41,334 INFO L226 Difference]: Without dead ends: 556 [2021-10-13 19:26:41,335 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 791.7ms TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2021-10-13 19:26:41,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-10-13 19:26:41,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 388. [2021-10-13 19:26:41,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 385 states have (on average 2.3714285714285714) internal successors, (913), 387 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:41,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 913 transitions. [2021-10-13 19:26:41,345 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 913 transitions. Word has length 46 [2021-10-13 19:26:41,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:26:41,345 INFO L470 AbstractCegarLoop]: Abstraction has 388 states and 913 transitions. [2021-10-13 19:26:41,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 1.0454545454545454) internal successors, (46), 44 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:41,346 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 913 transitions. [2021-10-13 19:26:41,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 19:26:41,347 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:26:41,347 INFO L512 BasicCegarLoop]: trace histogram [43, 1, 1, 1, 1] [2021-10-13 19:26:41,381 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2021-10-13 19:26:41,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,46 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:41,563 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:26:41,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:26:41,563 INFO L82 PathProgramCache]: Analyzing trace with hash 123393316, now seen corresponding path program 43 times [2021-10-13 19:26:41,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:26:41,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916158789] [2021-10-13 19:26:41,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:26:41,564 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:26:41,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:26:42,423 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:42,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:26:42,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916158789] [2021-10-13 19:26:42,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916158789] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:42,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19370375] [2021-10-13 19:26:42,424 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:26:42,424 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:42,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:26:42,425 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:26:42,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-10-13 19:26:42,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:26:42,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 46 conjunts are in the unsatisfiable core [2021-10-13 19:26:42,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:26:42,940 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:42,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19370375] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:42,940 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:26:42,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2021-10-13 19:26:42,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961608772] [2021-10-13 19:26:42,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-10-13 19:26:42,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:26:42,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-10-13 19:26:42,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 19:26:42,943 INFO L87 Difference]: Start difference. First operand 388 states and 913 transitions. Second operand has 46 states, 45 states have (on average 1.0444444444444445) internal successors, (47), 45 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:43,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:26:43,332 INFO L93 Difference]: Finished difference Result 750 states and 1765 transitions. [2021-10-13 19:26:43,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-13 19:26:43,333 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 1.0444444444444445) internal successors, (47), 45 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-10-13 19:26:43,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:26:43,336 INFO L225 Difference]: With dead ends: 750 [2021-10-13 19:26:43,336 INFO L226 Difference]: Without dead ends: 568 [2021-10-13 19:26:43,337 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 751.1ms TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 19:26:43,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2021-10-13 19:26:43,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 396. [2021-10-13 19:26:43,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 393 states have (on average 2.371501272264631) internal successors, (932), 395 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:43,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 932 transitions. [2021-10-13 19:26:43,346 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 932 transitions. Word has length 47 [2021-10-13 19:26:43,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:26:43,347 INFO L470 AbstractCegarLoop]: Abstraction has 396 states and 932 transitions. [2021-10-13 19:26:43,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 1.0444444444444445) internal successors, (47), 45 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:43,347 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 932 transitions. [2021-10-13 19:26:43,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-10-13 19:26:43,348 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:26:43,349 INFO L512 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1] [2021-10-13 19:26:43,385 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2021-10-13 19:26:43,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,47 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:43,562 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:26:43,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:26:43,563 INFO L82 PathProgramCache]: Analyzing trace with hash -469773067, now seen corresponding path program 44 times [2021-10-13 19:26:43,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:26:43,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873420801] [2021-10-13 19:26:43,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:26:43,564 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:26:43,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:26:44,590 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:44,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:26:44,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873420801] [2021-10-13 19:26:44,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873420801] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:44,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777245857] [2021-10-13 19:26:44,591 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:26:44,591 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:44,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:26:44,592 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:26:44,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2021-10-13 19:26:45,003 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:26:45,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:26:45,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 47 conjunts are in the unsatisfiable core [2021-10-13 19:26:45,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:26:45,150 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:45,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777245857] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:45,150 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:26:45,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2021-10-13 19:26:45,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688681234] [2021-10-13 19:26:45,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-10-13 19:26:45,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:26:45,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-10-13 19:26:45,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2021-10-13 19:26:45,152 INFO L87 Difference]: Start difference. First operand 396 states and 932 transitions. Second operand has 47 states, 46 states have (on average 1.0434782608695652) internal successors, (48), 46 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:45,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:26:45,543 INFO L93 Difference]: Finished difference Result 766 states and 1803 transitions. [2021-10-13 19:26:45,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-13 19:26:45,543 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.0434782608695652) internal successors, (48), 46 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-10-13 19:26:45,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:26:45,546 INFO L225 Difference]: With dead ends: 766 [2021-10-13 19:26:45,547 INFO L226 Difference]: Without dead ends: 580 [2021-10-13 19:26:45,547 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 906.5ms TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2021-10-13 19:26:45,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2021-10-13 19:26:45,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 404. [2021-10-13 19:26:45,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 401 states have (on average 2.371571072319202) internal successors, (951), 403 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:45,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 951 transitions. [2021-10-13 19:26:45,559 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 951 transitions. Word has length 48 [2021-10-13 19:26:45,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:26:45,559 INFO L470 AbstractCegarLoop]: Abstraction has 404 states and 951 transitions. [2021-10-13 19:26:45,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.0434782608695652) internal successors, (48), 46 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:45,559 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 951 transitions. [2021-10-13 19:26:45,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-10-13 19:26:45,561 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:26:45,561 INFO L512 BasicCegarLoop]: trace histogram [45, 1, 1, 1, 1] [2021-10-13 19:26:45,591 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2021-10-13 19:26:45,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2021-10-13 19:26:45,775 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:26:45,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:26:45,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1678061756, now seen corresponding path program 45 times [2021-10-13 19:26:45,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:26:45,776 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944764517] [2021-10-13 19:26:45,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:26:45,776 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:26:45,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:26:46,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:46,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:26:46,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944764517] [2021-10-13 19:26:46,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944764517] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:46,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114435667] [2021-10-13 19:26:46,743 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:26:46,744 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:46,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:26:46,746 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:26:46,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2021-10-13 19:26:47,191 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2021-10-13 19:26:47,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:26:47,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 48 conjunts are in the unsatisfiable core [2021-10-13 19:26:47,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:26:47,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:47,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114435667] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:47,341 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:26:47,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2021-10-13 19:26:47,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812758224] [2021-10-13 19:26:47,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-10-13 19:26:47,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:26:47,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-10-13 19:26:47,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-10-13 19:26:47,343 INFO L87 Difference]: Start difference. First operand 404 states and 951 transitions. Second operand has 48 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 47 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:47,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:26:47,744 INFO L93 Difference]: Finished difference Result 782 states and 1841 transitions. [2021-10-13 19:26:47,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-13 19:26:47,744 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 47 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-10-13 19:26:47,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:26:47,747 INFO L225 Difference]: With dead ends: 782 [2021-10-13 19:26:47,748 INFO L226 Difference]: Without dead ends: 592 [2021-10-13 19:26:47,748 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 844.6ms TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-10-13 19:26:47,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2021-10-13 19:26:47,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 412. [2021-10-13 19:26:47,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 409 states have (on average 2.371638141809291) internal successors, (970), 411 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:47,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 970 transitions. [2021-10-13 19:26:47,758 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 970 transitions. Word has length 49 [2021-10-13 19:26:47,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:26:47,759 INFO L470 AbstractCegarLoop]: Abstraction has 412 states and 970 transitions. [2021-10-13 19:26:47,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 47 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:47,759 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 970 transitions. [2021-10-13 19:26:47,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-13 19:26:47,761 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:26:47,761 INFO L512 BasicCegarLoop]: trace histogram [46, 1, 1, 1, 1] [2021-10-13 19:26:47,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2021-10-13 19:26:47,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2021-10-13 19:26:47,976 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:26:47,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:26:47,976 INFO L82 PathProgramCache]: Analyzing trace with hash -480305451, now seen corresponding path program 46 times [2021-10-13 19:26:47,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:26:47,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067650917] [2021-10-13 19:26:47,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:26:47,977 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:26:48,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:26:48,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:48,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:26:48,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067650917] [2021-10-13 19:26:48,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067650917] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:48,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755923514] [2021-10-13 19:26:48,921 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:26:48,921 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:48,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:26:48,922 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:26:48,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2021-10-13 19:26:49,386 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:26:49,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:26:49,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 49 conjunts are in the unsatisfiable core [2021-10-13 19:26:49,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:26:49,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:49,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755923514] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:49,520 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:26:49,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2021-10-13 19:26:49,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580710329] [2021-10-13 19:26:49,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-10-13 19:26:49,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:26:49,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-10-13 19:26:49,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2021-10-13 19:26:49,522 INFO L87 Difference]: Start difference. First operand 412 states and 970 transitions. Second operand has 49 states, 48 states have (on average 1.0416666666666667) internal successors, (50), 48 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:49,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:26:49,961 INFO L93 Difference]: Finished difference Result 798 states and 1879 transitions. [2021-10-13 19:26:49,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-10-13 19:26:49,961 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 1.0416666666666667) internal successors, (50), 48 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-10-13 19:26:49,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:26:49,964 INFO L225 Difference]: With dead ends: 798 [2021-10-13 19:26:49,964 INFO L226 Difference]: Without dead ends: 604 [2021-10-13 19:26:49,964 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 809.1ms TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2021-10-13 19:26:49,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2021-10-13 19:26:49,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 420. [2021-10-13 19:26:49,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 417 states have (on average 2.371702637889688) internal successors, (989), 419 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:49,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 989 transitions. [2021-10-13 19:26:49,974 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 989 transitions. Word has length 50 [2021-10-13 19:26:49,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:26:49,974 INFO L470 AbstractCegarLoop]: Abstraction has 420 states and 989 transitions. [2021-10-13 19:26:49,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 1.0416666666666667) internal successors, (50), 48 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:49,975 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 989 transitions. [2021-10-13 19:26:49,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-13 19:26:49,976 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:26:49,976 INFO L512 BasicCegarLoop]: trace histogram [47, 1, 1, 1, 1] [2021-10-13 19:26:50,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2021-10-13 19:26:50,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2021-10-13 19:26:50,192 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:26:50,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:26:50,193 INFO L82 PathProgramCache]: Analyzing trace with hash -2004565660, now seen corresponding path program 47 times [2021-10-13 19:26:50,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:26:50,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13599533] [2021-10-13 19:26:50,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:26:50,194 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:26:50,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:26:51,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:51,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:26:51,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13599533] [2021-10-13 19:26:51,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13599533] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:51,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310507048] [2021-10-13 19:26:51,283 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:26:51,283 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:51,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:26:51,284 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:26:51,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2021-10-13 19:26:51,747 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2021-10-13 19:26:51,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:26:51,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 50 conjunts are in the unsatisfiable core [2021-10-13 19:26:51,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:26:51,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:51,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310507048] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:51,898 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:26:51,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2021-10-13 19:26:51,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029489296] [2021-10-13 19:26:51,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-10-13 19:26:51,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:26:51,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-10-13 19:26:51,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2021-10-13 19:26:51,900 INFO L87 Difference]: Start difference. First operand 420 states and 989 transitions. Second operand has 50 states, 49 states have (on average 1.0408163265306123) internal successors, (51), 49 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:52,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:26:52,370 INFO L93 Difference]: Finished difference Result 814 states and 1917 transitions. [2021-10-13 19:26:52,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-13 19:26:52,370 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 1.0408163265306123) internal successors, (51), 49 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-10-13 19:26:52,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:26:52,376 INFO L225 Difference]: With dead ends: 814 [2021-10-13 19:26:52,376 INFO L226 Difference]: Without dead ends: 616 [2021-10-13 19:26:52,376 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 972.5ms TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2021-10-13 19:26:52,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2021-10-13 19:26:52,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 428. [2021-10-13 19:26:52,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 425 states have (on average 2.3717647058823528) internal successors, (1008), 427 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:52,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 1008 transitions. [2021-10-13 19:26:52,388 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 1008 transitions. Word has length 51 [2021-10-13 19:26:52,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:26:52,389 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 1008 transitions. [2021-10-13 19:26:52,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 1.0408163265306123) internal successors, (51), 49 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:52,389 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 1008 transitions. [2021-10-13 19:26:52,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-13 19:26:52,390 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:26:52,391 INFO L512 BasicCegarLoop]: trace histogram [48, 1, 1, 1, 1] [2021-10-13 19:26:52,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2021-10-13 19:26:52,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,51 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:52,605 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:26:52,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:26:52,605 INFO L82 PathProgramCache]: Analyzing trace with hash -2011991883, now seen corresponding path program 48 times [2021-10-13 19:26:52,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:26:52,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455796273] [2021-10-13 19:26:52,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:26:52,606 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:26:52,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:26:53,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:53,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:26:53,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455796273] [2021-10-13 19:26:53,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455796273] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:53,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389880116] [2021-10-13 19:26:53,694 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:26:53,695 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:53,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:26:53,696 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:26:53,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2021-10-13 19:26:54,226 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2021-10-13 19:26:54,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:26:54,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 51 conjunts are in the unsatisfiable core [2021-10-13 19:26:54,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:26:54,380 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:54,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389880116] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:54,380 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:26:54,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2021-10-13 19:26:54,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844373442] [2021-10-13 19:26:54,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-10-13 19:26:54,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:26:54,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-10-13 19:26:54,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2021-10-13 19:26:54,383 INFO L87 Difference]: Start difference. First operand 428 states and 1008 transitions. Second operand has 51 states, 50 states have (on average 1.04) internal successors, (52), 50 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:54,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:26:54,883 INFO L93 Difference]: Finished difference Result 830 states and 1955 transitions. [2021-10-13 19:26:54,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-10-13 19:26:54,883 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 1.04) internal successors, (52), 50 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-10-13 19:26:54,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:26:54,887 INFO L225 Difference]: With dead ends: 830 [2021-10-13 19:26:54,887 INFO L226 Difference]: Without dead ends: 628 [2021-10-13 19:26:54,888 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 970.1ms TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2021-10-13 19:26:54,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2021-10-13 19:26:54,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 436. [2021-10-13 19:26:54,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 433 states have (on average 2.371824480369515) internal successors, (1027), 435 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:54,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 1027 transitions. [2021-10-13 19:26:54,900 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 1027 transitions. Word has length 52 [2021-10-13 19:26:54,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:26:54,900 INFO L470 AbstractCegarLoop]: Abstraction has 436 states and 1027 transitions. [2021-10-13 19:26:54,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 1.04) internal successors, (52), 50 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:54,900 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 1027 transitions. [2021-10-13 19:26:54,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-13 19:26:54,902 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:26:54,902 INFO L512 BasicCegarLoop]: trace histogram [49, 1, 1, 1, 1] [2021-10-13 19:26:54,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2021-10-13 19:26:55,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-10-13 19:26:55,117 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:26:55,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:26:55,117 INFO L82 PathProgramCache]: Analyzing trace with hash 2052762500, now seen corresponding path program 49 times [2021-10-13 19:26:55,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:26:55,118 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022191465] [2021-10-13 19:26:55,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:26:55,118 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:26:55,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:26:56,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:56,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:26:56,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022191465] [2021-10-13 19:26:56,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022191465] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:56,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785586398] [2021-10-13 19:26:56,230 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:26:56,230 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:56,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:26:56,231 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:26:56,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2021-10-13 19:26:56,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:26:56,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 52 conjunts are in the unsatisfiable core [2021-10-13 19:26:56,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:26:56,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:56,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785586398] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:56,861 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:26:56,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2021-10-13 19:26:56,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137517629] [2021-10-13 19:26:56,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-10-13 19:26:56,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:26:56,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-10-13 19:26:56,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2021-10-13 19:26:56,863 INFO L87 Difference]: Start difference. First operand 436 states and 1027 transitions. Second operand has 52 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 51 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:57,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:26:57,299 INFO L93 Difference]: Finished difference Result 846 states and 1993 transitions. [2021-10-13 19:26:57,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-10-13 19:26:57,299 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 51 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-10-13 19:26:57,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:26:57,302 INFO L225 Difference]: With dead ends: 846 [2021-10-13 19:26:57,302 INFO L226 Difference]: Without dead ends: 640 [2021-10-13 19:26:57,303 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 991.2ms TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2021-10-13 19:26:57,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2021-10-13 19:26:57,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 444. [2021-10-13 19:26:57,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 441 states have (on average 2.3718820861678003) internal successors, (1046), 443 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:57,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 1046 transitions. [2021-10-13 19:26:57,315 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 1046 transitions. Word has length 53 [2021-10-13 19:26:57,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:26:57,315 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 1046 transitions. [2021-10-13 19:26:57,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 51 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:26:57,315 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 1046 transitions. [2021-10-13 19:26:57,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-10-13 19:26:57,317 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:26:57,317 INFO L512 BasicCegarLoop]: trace histogram [50, 1, 1, 1, 1] [2021-10-13 19:26:57,351 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2021-10-13 19:26:57,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,53 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:57,531 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:26:57,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:26:57,532 INFO L82 PathProgramCache]: Analyzing trace with hash -788870507, now seen corresponding path program 50 times [2021-10-13 19:26:57,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:26:57,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089648341] [2021-10-13 19:26:57,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:26:57,533 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:26:57,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:26:58,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:58,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:26:58,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089648341] [2021-10-13 19:26:58,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089648341] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:58,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692285452] [2021-10-13 19:26:58,778 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:26:58,778 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:26:58,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:26:58,779 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:26:58,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2021-10-13 19:26:59,308 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:26:59,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:26:59,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 53 conjunts are in the unsatisfiable core [2021-10-13 19:26:59,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:26:59,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:26:59,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692285452] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:26:59,477 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:26:59,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2021-10-13 19:26:59,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521654348] [2021-10-13 19:26:59,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-10-13 19:26:59,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:26:59,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-10-13 19:26:59,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2021-10-13 19:26:59,479 INFO L87 Difference]: Start difference. First operand 444 states and 1046 transitions. Second operand has 53 states, 52 states have (on average 1.0384615384615385) internal successors, (54), 52 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:27:00,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:27:00,051 INFO L93 Difference]: Finished difference Result 862 states and 2031 transitions. [2021-10-13 19:27:00,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-10-13 19:27:00,051 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 1.0384615384615385) internal successors, (54), 52 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-10-13 19:27:00,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:27:00,053 INFO L225 Difference]: With dead ends: 862 [2021-10-13 19:27:00,053 INFO L226 Difference]: Without dead ends: 652 [2021-10-13 19:27:00,054 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1117.3ms TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2021-10-13 19:27:00,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2021-10-13 19:27:00,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 452. [2021-10-13 19:27:00,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 449 states have (on average 2.3719376391982183) internal successors, (1065), 451 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:27:00,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 1065 transitions. [2021-10-13 19:27:00,067 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 1065 transitions. Word has length 54 [2021-10-13 19:27:00,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:27:00,067 INFO L470 AbstractCegarLoop]: Abstraction has 452 states and 1065 transitions. [2021-10-13 19:27:00,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 1.0384615384615385) internal successors, (54), 52 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:27:00,067 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 1065 transitions. [2021-10-13 19:27:00,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-13 19:27:00,069 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:27:00,069 INFO L512 BasicCegarLoop]: trace histogram [51, 1, 1, 1, 1] [2021-10-13 19:27:00,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2021-10-13 19:27:00,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-10-13 19:27:00,283 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:27:00,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:27:00,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1314819492, now seen corresponding path program 51 times [2021-10-13 19:27:00,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:27:00,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92832804] [2021-10-13 19:27:00,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:27:00,284 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:27:00,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:27:01,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:27:01,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:27:01,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92832804] [2021-10-13 19:27:01,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92832804] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:27:01,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170335882] [2021-10-13 19:27:01,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:27:01,545 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:27:01,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:27:01,550 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:27:01,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2021-10-13 19:27:02,121 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2021-10-13 19:27:02,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:27:02,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 54 conjunts are in the unsatisfiable core [2021-10-13 19:27:02,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:27:02,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:27:02,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170335882] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:27:02,268 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:27:02,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2021-10-13 19:27:02,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103690643] [2021-10-13 19:27:02,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2021-10-13 19:27:02,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:27:02,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-10-13 19:27:02,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2021-10-13 19:27:02,270 INFO L87 Difference]: Start difference. First operand 452 states and 1065 transitions. Second operand has 54 states, 53 states have (on average 1.0377358490566038) internal successors, (55), 53 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:27:02,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:27:02,802 INFO L93 Difference]: Finished difference Result 878 states and 2069 transitions. [2021-10-13 19:27:02,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-13 19:27:02,803 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 1.0377358490566038) internal successors, (55), 53 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-10-13 19:27:02,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:27:02,805 INFO L225 Difference]: With dead ends: 878 [2021-10-13 19:27:02,805 INFO L226 Difference]: Without dead ends: 664 [2021-10-13 19:27:02,805 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1132.3ms TimeCoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2021-10-13 19:27:02,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2021-10-13 19:27:02,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 460. [2021-10-13 19:27:02,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 457 states have (on average 2.3719912472647704) internal successors, (1084), 459 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:27:02,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 1084 transitions. [2021-10-13 19:27:02,816 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 1084 transitions. Word has length 55 [2021-10-13 19:27:02,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:27:02,816 INFO L470 AbstractCegarLoop]: Abstraction has 460 states and 1084 transitions. [2021-10-13 19:27:02,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 1.0377358490566038) internal successors, (55), 53 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:27:02,817 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 1084 transitions. [2021-10-13 19:27:02,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-10-13 19:27:02,818 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:27:02,818 INFO L512 BasicCegarLoop]: trace histogram [52, 1, 1, 1, 1] [2021-10-13 19:27:02,848 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2021-10-13 19:27:03,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-10-13 19:27:03,032 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:27:03,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:27:03,032 INFO L82 PathProgramCache]: Analyzing trace with hash 2104700021, now seen corresponding path program 52 times [2021-10-13 19:27:03,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:27:03,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508141120] [2021-10-13 19:27:03,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:27:03,034 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:27:03,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:27:04,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:27:04,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:27:04,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508141120] [2021-10-13 19:27:04,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508141120] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:27:04,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009367063] [2021-10-13 19:27:04,252 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:27:04,252 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:27:04,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:27:04,253 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:27:04,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2021-10-13 19:27:04,816 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:27:04,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:27:04,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 55 conjunts are in the unsatisfiable core [2021-10-13 19:27:04,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:27:04,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:27:04,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009367063] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:27:04,981 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:27:04,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2021-10-13 19:27:04,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051875729] [2021-10-13 19:27:04,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2021-10-13 19:27:04,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:27:04,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-10-13 19:27:04,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2021-10-13 19:27:04,983 INFO L87 Difference]: Start difference. First operand 460 states and 1084 transitions. Second operand has 55 states, 54 states have (on average 1.037037037037037) internal successors, (56), 54 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:27:05,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:27:05,561 INFO L93 Difference]: Finished difference Result 894 states and 2107 transitions. [2021-10-13 19:27:05,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-10-13 19:27:05,562 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 1.037037037037037) internal successors, (56), 54 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-10-13 19:27:05,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:27:05,564 INFO L225 Difference]: With dead ends: 894 [2021-10-13 19:27:05,564 INFO L226 Difference]: Without dead ends: 676 [2021-10-13 19:27:05,564 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1098.7ms TimeCoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2021-10-13 19:27:05,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2021-10-13 19:27:05,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 468. [2021-10-13 19:27:05,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 465 states have (on average 2.372043010752688) internal successors, (1103), 467 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:27:05,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 1103 transitions. [2021-10-13 19:27:05,578 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 1103 transitions. Word has length 56 [2021-10-13 19:27:05,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:27:05,578 INFO L470 AbstractCegarLoop]: Abstraction has 468 states and 1103 transitions. [2021-10-13 19:27:05,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 1.037037037037037) internal successors, (56), 54 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:27:05,579 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 1103 transitions. [2021-10-13 19:27:05,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 19:27:05,580 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:27:05,580 INFO L512 BasicCegarLoop]: trace histogram [53, 1, 1, 1, 1] [2021-10-13 19:27:05,609 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2021-10-13 19:27:05,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-10-13 19:27:05,794 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:27:05,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:27:05,795 INFO L82 PathProgramCache]: Analyzing trace with hash 821192644, now seen corresponding path program 53 times [2021-10-13 19:27:05,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:27:05,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345862040] [2021-10-13 19:27:05,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:27:05,796 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:27:05,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:27:07,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:27:07,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:27:07,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345862040] [2021-10-13 19:27:07,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345862040] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:27:07,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971928546] [2021-10-13 19:27:07,147 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:27:07,147 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:27:07,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:27:07,148 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:27:07,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2021-10-13 19:27:07,725 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2021-10-13 19:27:07,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:27:07,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 56 conjunts are in the unsatisfiable core [2021-10-13 19:27:07,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:27:07,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:27:07,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971928546] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:27:07,908 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:27:07,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2021-10-13 19:27:07,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737739684] [2021-10-13 19:27:07,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2021-10-13 19:27:07,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:27:07,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-10-13 19:27:07,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2021-10-13 19:27:07,910 INFO L87 Difference]: Start difference. First operand 468 states and 1103 transitions. Second operand has 56 states, 55 states have (on average 1.0363636363636364) internal successors, (57), 55 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:27:08,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:27:08,509 INFO L93 Difference]: Finished difference Result 910 states and 2145 transitions. [2021-10-13 19:27:08,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-10-13 19:27:08,509 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 1.0363636363636364) internal successors, (57), 55 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-10-13 19:27:08,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:27:08,511 INFO L225 Difference]: With dead ends: 910 [2021-10-13 19:27:08,511 INFO L226 Difference]: Without dead ends: 688 [2021-10-13 19:27:08,511 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1216.3ms TimeCoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2021-10-13 19:27:08,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2021-10-13 19:27:08,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 476. [2021-10-13 19:27:08,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 473 states have (on average 2.372093023255814) internal successors, (1122), 475 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:27:08,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 1122 transitions. [2021-10-13 19:27:08,522 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 1122 transitions. Word has length 57 [2021-10-13 19:27:08,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:27:08,523 INFO L470 AbstractCegarLoop]: Abstraction has 476 states and 1122 transitions. [2021-10-13 19:27:08,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 1.0363636363636364) internal successors, (57), 55 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:27:08,523 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 1122 transitions. [2021-10-13 19:27:08,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-10-13 19:27:08,525 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:27:08,525 INFO L512 BasicCegarLoop]: trace histogram [54, 1, 1, 1, 1] [2021-10-13 19:27:08,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2021-10-13 19:27:08,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,57 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:27:08,739 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:27:08,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:27:08,740 INFO L82 PathProgramCache]: Analyzing trace with hash -312830379, now seen corresponding path program 54 times [2021-10-13 19:27:08,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:27:08,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268012241] [2021-10-13 19:27:08,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:27:08,741 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:27:08,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:27:10,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:27:10,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:27:10,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268012241] [2021-10-13 19:27:10,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268012241] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:27:10,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625582270] [2021-10-13 19:27:10,149 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:27:10,149 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:27:10,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:27:10,151 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:27:10,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2021-10-13 19:27:10,762 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2021-10-13 19:27:10,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:27:10,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 57 conjunts are in the unsatisfiable core [2021-10-13 19:27:10,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:27:10,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:27:10,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625582270] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:27:10,934 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:27:10,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2021-10-13 19:27:10,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453932310] [2021-10-13 19:27:10,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2021-10-13 19:27:10,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:27:10,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-10-13 19:27:10,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2021-10-13 19:27:10,935 INFO L87 Difference]: Start difference. First operand 476 states and 1122 transitions. Second operand has 57 states, 56 states have (on average 1.0357142857142858) internal successors, (58), 56 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:27:11,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:27:11,566 INFO L93 Difference]: Finished difference Result 926 states and 2183 transitions. [2021-10-13 19:27:11,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-10-13 19:27:11,567 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 1.0357142857142858) internal successors, (58), 56 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-10-13 19:27:11,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:27:11,569 INFO L225 Difference]: With dead ends: 926 [2021-10-13 19:27:11,569 INFO L226 Difference]: Without dead ends: 700 [2021-10-13 19:27:11,569 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1279.9ms TimeCoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2021-10-13 19:27:11,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2021-10-13 19:27:11,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 484. [2021-10-13 19:27:11,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 481 states have (on average 2.372141372141372) internal successors, (1141), 483 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:27:11,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 1141 transitions. [2021-10-13 19:27:11,579 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 1141 transitions. Word has length 58 [2021-10-13 19:27:11,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:27:11,580 INFO L470 AbstractCegarLoop]: Abstraction has 484 states and 1141 transitions. [2021-10-13 19:27:11,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 1.0357142857142858) internal successors, (58), 56 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:27:11,580 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 1141 transitions. [2021-10-13 19:27:11,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-10-13 19:27:11,581 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:27:11,582 INFO L512 BasicCegarLoop]: trace histogram [55, 1, 1, 1, 1] [2021-10-13 19:27:11,615 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2021-10-13 19:27:11,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,58 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:27:11,798 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:27:11,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:27:11,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1107805724, now seen corresponding path program 55 times [2021-10-13 19:27:11,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:27:11,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469510050] [2021-10-13 19:27:11,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:27:11,799 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:27:11,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:27:13,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:27:13,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:27:13,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469510050] [2021-10-13 19:27:13,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469510050] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:27:13,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33171117] [2021-10-13 19:27:13,260 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:27:13,260 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:27:13,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:27:13,261 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:27:13,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2021-10-13 19:27:13,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:27:13,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 58 conjunts are in the unsatisfiable core [2021-10-13 19:27:13,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:27:14,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:27:14,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33171117] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:27:14,016 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:27:14,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2021-10-13 19:27:14,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201573938] [2021-10-13 19:27:14,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-10-13 19:27:14,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:27:14,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-10-13 19:27:14,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2021-10-13 19:27:14,018 INFO L87 Difference]: Start difference. First operand 484 states and 1141 transitions. Second operand has 58 states, 57 states have (on average 1.0350877192982457) internal successors, (59), 57 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:27:14,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:27:14,734 INFO L93 Difference]: Finished difference Result 942 states and 2221 transitions. [2021-10-13 19:27:14,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-10-13 19:27:14,735 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 1.0350877192982457) internal successors, (59), 57 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-10-13 19:27:14,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:27:14,737 INFO L225 Difference]: With dead ends: 942 [2021-10-13 19:27:14,737 INFO L226 Difference]: Without dead ends: 712 [2021-10-13 19:27:14,737 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1312.7ms TimeCoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2021-10-13 19:27:14,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2021-10-13 19:27:14,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 492. [2021-10-13 19:27:14,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 489 states have (on average 2.372188139059305) internal successors, (1160), 491 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:27:14,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 1160 transitions. [2021-10-13 19:27:14,745 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 1160 transitions. Word has length 59 [2021-10-13 19:27:14,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:27:14,745 INFO L470 AbstractCegarLoop]: Abstraction has 492 states and 1160 transitions. [2021-10-13 19:27:14,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 1.0350877192982457) internal successors, (59), 57 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:27:14,746 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 1160 transitions. [2021-10-13 19:27:14,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-13 19:27:14,747 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:27:14,747 INFO L512 BasicCegarLoop]: trace histogram [56, 1, 1, 1, 1] [2021-10-13 19:27:14,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2021-10-13 19:27:14,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2021-10-13 19:27:14,962 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:27:14,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:27:14,963 INFO L82 PathProgramCache]: Analyzing trace with hash 17762357, now seen corresponding path program 56 times [2021-10-13 19:27:14,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:27:14,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495426348] [2021-10-13 19:27:14,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:27:14,964 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:27:14,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:27:16,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:27:16,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:27:16,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495426348] [2021-10-13 19:27:16,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495426348] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:27:16,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512701894] [2021-10-13 19:27:16,418 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:27:16,419 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:27:16,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:27:16,420 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:27:16,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2021-10-13 19:27:17,029 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:27:17,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:27:17,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 59 conjunts are in the unsatisfiable core [2021-10-13 19:27:17,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:27:17,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:27:17,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512701894] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:27:17,207 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:27:17,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2021-10-13 19:27:17,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166637057] [2021-10-13 19:27:17,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2021-10-13 19:27:17,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:27:17,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-10-13 19:27:17,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2021-10-13 19:27:17,210 INFO L87 Difference]: Start difference. First operand 492 states and 1160 transitions. Second operand has 59 states, 58 states have (on average 1.0344827586206897) internal successors, (60), 58 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:27:18,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:27:18,172 INFO L93 Difference]: Finished difference Result 958 states and 2259 transitions. [2021-10-13 19:27:18,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-10-13 19:27:18,173 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 1.0344827586206897) internal successors, (60), 58 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-10-13 19:27:18,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:27:18,175 INFO L225 Difference]: With dead ends: 958 [2021-10-13 19:27:18,175 INFO L226 Difference]: Without dead ends: 724 [2021-10-13 19:27:18,176 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1322.7ms TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2021-10-13 19:27:18,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2021-10-13 19:27:18,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 500. [2021-10-13 19:27:18,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 497 states have (on average 2.3722334004024144) internal successors, (1179), 499 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:27:18,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 1179 transitions. [2021-10-13 19:27:18,189 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 1179 transitions. Word has length 60 [2021-10-13 19:27:18,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:27:18,189 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 1179 transitions. [2021-10-13 19:27:18,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 1.0344827586206897) internal successors, (60), 58 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:27:18,190 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 1179 transitions. [2021-10-13 19:27:18,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-10-13 19:27:18,191 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:27:18,191 INFO L512 BasicCegarLoop]: trace histogram [57, 1, 1, 1, 1] [2021-10-13 19:27:18,230 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2021-10-13 19:27:18,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,60 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:27:18,405 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:27:18,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:27:18,406 INFO L82 PathProgramCache]: Analyzing trace with hash 550634500, now seen corresponding path program 57 times [2021-10-13 19:27:18,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:27:18,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749249320] [2021-10-13 19:27:18,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:27:18,407 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:27:18,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:27:19,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:27:19,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:27:19,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749249320] [2021-10-13 19:27:19,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749249320] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:27:19,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423152793] [2021-10-13 19:27:19,972 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:27:19,972 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:27:19,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:27:19,973 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:27:19,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2021-10-13 19:27:20,658 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2021-10-13 19:27:20,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:27:20,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 60 conjunts are in the unsatisfiable core [2021-10-13 19:27:20,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:27:20,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:27:20,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423152793] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:27:20,841 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:27:20,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2021-10-13 19:27:20,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272726141] [2021-10-13 19:27:20,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2021-10-13 19:27:20,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:27:20,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-10-13 19:27:20,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2021-10-13 19:27:20,844 INFO L87 Difference]: Start difference. First operand 500 states and 1179 transitions. Second operand has 60 states, 59 states have (on average 1.0338983050847457) internal successors, (61), 59 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:27:21,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:27:21,620 INFO L93 Difference]: Finished difference Result 974 states and 2297 transitions. [2021-10-13 19:27:21,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-10-13 19:27:21,620 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 1.0338983050847457) internal successors, (61), 59 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-10-13 19:27:21,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:27:21,622 INFO L225 Difference]: With dead ends: 974 [2021-10-13 19:27:21,622 INFO L226 Difference]: Without dead ends: 736 [2021-10-13 19:27:21,623 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1419.1ms TimeCoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2021-10-13 19:27:21,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2021-10-13 19:27:21,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 508. [2021-10-13 19:27:21,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 505 states have (on average 2.372277227722772) internal successors, (1198), 507 states have internal predecessors, (1198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:27:21,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 1198 transitions. [2021-10-13 19:27:21,636 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 1198 transitions. Word has length 61 [2021-10-13 19:27:21,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:27:21,636 INFO L470 AbstractCegarLoop]: Abstraction has 508 states and 1198 transitions. [2021-10-13 19:27:21,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 1.0338983050847457) internal successors, (61), 59 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:27:21,636 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 1198 transitions. [2021-10-13 19:27:21,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 19:27:21,638 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:27:21,638 INFO L512 BasicCegarLoop]: trace histogram [58, 1, 1, 1, 1] [2021-10-13 19:27:21,664 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2021-10-13 19:27:21,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2021-10-13 19:27:21,845 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:27:21,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:27:21,845 INFO L82 PathProgramCache]: Analyzing trace with hash -110198251, now seen corresponding path program 58 times [2021-10-13 19:27:21,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:27:21,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211262780] [2021-10-13 19:27:21,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:27:21,847 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:27:21,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:27:23,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:27:23,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:27:23,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211262780] [2021-10-13 19:27:23,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211262780] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:27:23,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676580106] [2021-10-13 19:27:23,587 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:27:23,587 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:27:23,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:27:23,588 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:27:23,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2021-10-13 19:27:24,254 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:27:24,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:27:24,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 61 conjunts are in the unsatisfiable core [2021-10-13 19:27:24,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:27:24,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:27:24,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676580106] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:27:24,404 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:27:24,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2021-10-13 19:27:24,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788864557] [2021-10-13 19:27:24,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2021-10-13 19:27:24,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:27:24,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-10-13 19:27:24,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2021-10-13 19:27:24,405 INFO L87 Difference]: Start difference. First operand 508 states and 1198 transitions. Second operand has 61 states, 60 states have (on average 1.0333333333333334) internal successors, (62), 60 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:27:25,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:27:25,132 INFO L93 Difference]: Finished difference Result 990 states and 2335 transitions. [2021-10-13 19:27:25,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-10-13 19:27:25,132 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 60 states have (on average 1.0333333333333334) internal successors, (62), 60 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-13 19:27:25,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:27:25,134 INFO L225 Difference]: With dead ends: 990 [2021-10-13 19:27:25,134 INFO L226 Difference]: Without dead ends: 748 [2021-10-13 19:27:25,135 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1463.6ms TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2021-10-13 19:27:25,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2021-10-13 19:27:25,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 516. [2021-10-13 19:27:25,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 513 states have (on average 2.3723196881091617) internal successors, (1217), 515 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:27:25,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 1217 transitions. [2021-10-13 19:27:25,144 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 1217 transitions. Word has length 62 [2021-10-13 19:27:25,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:27:25,144 INFO L470 AbstractCegarLoop]: Abstraction has 516 states and 1217 transitions. [2021-10-13 19:27:25,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 60 states have (on average 1.0333333333333334) internal successors, (62), 60 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:27:25,144 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 1217 transitions. [2021-10-13 19:27:25,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-10-13 19:27:25,146 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:27:25,146 INFO L512 BasicCegarLoop]: trace histogram [59, 1, 1, 1, 1] [2021-10-13 19:27:25,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2021-10-13 19:27:25,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2021-10-13 19:27:25,360 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:27:25,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:27:25,361 INFO L82 PathProgramCache]: Analyzing trace with hash 878822948, now seen corresponding path program 59 times [2021-10-13 19:27:25,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:27:25,362 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205128649] [2021-10-13 19:27:25,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:27:25,362 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:27:25,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:27:27,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:27:27,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:27:27,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205128649] [2021-10-13 19:27:27,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205128649] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:27:27,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106447075] [2021-10-13 19:27:27,099 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:27:27,099 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:27:27,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:27:27,107 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:27:27,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2021-10-13 19:27:27,816 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2021-10-13 19:27:27,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:27:27,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 62 conjunts are in the unsatisfiable core [2021-10-13 19:27:27,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:27:27,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:27:27,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106447075] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:27:27,984 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:27:27,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2021-10-13 19:27:27,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263109031] [2021-10-13 19:27:27,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2021-10-13 19:27:27,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:27:27,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-10-13 19:27:27,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2021-10-13 19:27:27,986 INFO L87 Difference]: Start difference. First operand 516 states and 1217 transitions. Second operand has 62 states, 61 states have (on average 1.0327868852459017) internal successors, (63), 61 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:27:28,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:27:28,979 INFO L93 Difference]: Finished difference Result 1006 states and 2373 transitions. [2021-10-13 19:27:28,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-10-13 19:27:28,979 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 1.0327868852459017) internal successors, (63), 61 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-10-13 19:27:28,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:27:28,981 INFO L225 Difference]: With dead ends: 1006 [2021-10-13 19:27:28,981 INFO L226 Difference]: Without dead ends: 760 [2021-10-13 19:27:28,981 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1545.1ms TimeCoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2021-10-13 19:27:28,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2021-10-13 19:27:28,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 524. [2021-10-13 19:27:28,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 521 states have (on average 2.3723608445297506) internal successors, (1236), 523 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:27:28,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 1236 transitions. [2021-10-13 19:27:28,990 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 1236 transitions. Word has length 63 [2021-10-13 19:27:28,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:27:28,991 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 1236 transitions. [2021-10-13 19:27:28,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 1.0327868852459017) internal successors, (63), 61 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:27:28,991 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 1236 transitions. [2021-10-13 19:27:28,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-10-13 19:27:28,992 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:27:28,993 INFO L512 BasicCegarLoop]: trace histogram [60, 1, 1, 1, 1] [2021-10-13 19:27:29,018 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2021-10-13 19:27:29,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2021-10-13 19:27:29,201 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:27:29,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:27:29,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1473709045, now seen corresponding path program 60 times [2021-10-13 19:27:29,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:27:29,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240956405] [2021-10-13 19:27:29,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:27:29,202 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:27:29,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:27:30,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:27:30,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:27:30,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240956405] [2021-10-13 19:27:30,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240956405] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:27:30,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255623576] [2021-10-13 19:27:30,914 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:27:30,914 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:27:30,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:27:30,915 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:27:30,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2021-10-13 19:27:31,660 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2021-10-13 19:27:31,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:27:31,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 592 conjuncts, 63 conjunts are in the unsatisfiable core [2021-10-13 19:27:31,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:27:31,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:27:31,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255623576] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:27:31,842 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:27:31,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2021-10-13 19:27:31,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995122963] [2021-10-13 19:27:31,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2021-10-13 19:27:31,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:27:31,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-10-13 19:27:31,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2021-10-13 19:27:31,844 INFO L87 Difference]: Start difference. First operand 524 states and 1236 transitions. Second operand has 63 states, 62 states have (on average 1.032258064516129) internal successors, (64), 62 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:27:32,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:27:32,628 INFO L93 Difference]: Finished difference Result 1022 states and 2411 transitions. [2021-10-13 19:27:32,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-10-13 19:27:32,629 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 1.032258064516129) internal successors, (64), 62 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-10-13 19:27:32,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:27:32,631 INFO L225 Difference]: With dead ends: 1022 [2021-10-13 19:27:32,631 INFO L226 Difference]: Without dead ends: 772 [2021-10-13 19:27:32,632 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1569.5ms TimeCoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2021-10-13 19:27:32,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2021-10-13 19:27:32,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 532. [2021-10-13 19:27:32,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 529 states have (on average 2.372400756143667) internal successors, (1255), 531 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:27:32,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 1255 transitions. [2021-10-13 19:27:32,642 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 1255 transitions. Word has length 64 [2021-10-13 19:27:32,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:27:32,642 INFO L470 AbstractCegarLoop]: Abstraction has 532 states and 1255 transitions. [2021-10-13 19:27:32,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 1.032258064516129) internal successors, (64), 62 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:27:32,642 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 1255 transitions. [2021-10-13 19:27:32,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-13 19:27:32,644 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:27:32,644 INFO L512 BasicCegarLoop]: trace histogram [61, 1, 1, 1, 1] [2021-10-13 19:27:32,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2021-10-13 19:27:32,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,64 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:27:32,858 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:27:32,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:27:32,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1559658428, now seen corresponding path program 61 times [2021-10-13 19:27:32,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:27:32,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718814047] [2021-10-13 19:27:32,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:27:32,859 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:27:32,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:27:34,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:27:34,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:27:34,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718814047] [2021-10-13 19:27:34,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718814047] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:27:34,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092771395] [2021-10-13 19:27:34,609 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:27:34,609 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:27:34,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:27:34,610 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:27:34,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2021-10-13 19:27:35,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:27:35,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 64 conjunts are in the unsatisfiable core [2021-10-13 19:27:35,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:27:35,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:27:35,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092771395] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:27:35,541 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:27:35,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2021-10-13 19:27:35,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629201114] [2021-10-13 19:27:35,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-10-13 19:27:35,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:27:35,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-10-13 19:27:35,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2021-10-13 19:27:35,546 INFO L87 Difference]: Start difference. First operand 532 states and 1255 transitions. Second operand has 64 states, 63 states have (on average 1.0317460317460319) internal successors, (65), 63 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:27:36,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:27:36,459 INFO L93 Difference]: Finished difference Result 1038 states and 2449 transitions. [2021-10-13 19:27:36,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-10-13 19:27:36,459 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 1.0317460317460319) internal successors, (65), 63 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-10-13 19:27:36,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:27:36,463 INFO L225 Difference]: With dead ends: 1038 [2021-10-13 19:27:36,463 INFO L226 Difference]: Without dead ends: 784 [2021-10-13 19:27:36,463 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1603.9ms TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2021-10-13 19:27:36,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2021-10-13 19:27:36,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 540. [2021-10-13 19:27:36,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 537 states have (on average 2.37243947858473) internal successors, (1274), 539 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:27:36,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 1274 transitions. [2021-10-13 19:27:36,477 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 1274 transitions. Word has length 65 [2021-10-13 19:27:36,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:27:36,478 INFO L470 AbstractCegarLoop]: Abstraction has 540 states and 1274 transitions. [2021-10-13 19:27:36,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 1.0317460317460319) internal successors, (65), 63 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:27:36,478 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 1274 transitions. [2021-10-13 19:27:36,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-10-13 19:27:36,480 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:27:36,480 INFO L512 BasicCegarLoop]: trace histogram [62, 1, 1, 1, 1] [2021-10-13 19:27:36,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2021-10-13 19:27:36,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-10-13 19:27:36,688 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:27:36,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:27:36,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1104769579, now seen corresponding path program 62 times [2021-10-13 19:27:36,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:27:36,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233666962] [2021-10-13 19:27:36,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:27:36,689 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:27:36,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:27:38,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:27:38,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:27:38,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233666962] [2021-10-13 19:27:38,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233666962] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:27:38,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918250411] [2021-10-13 19:27:38,518 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:27:38,518 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:27:38,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:27:38,519 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:27:38,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2021-10-13 19:27:39,246 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:27:39,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:27:39,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 65 conjunts are in the unsatisfiable core [2021-10-13 19:27:39,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:27:39,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:27:39,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918250411] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:27:39,437 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:27:39,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2021-10-13 19:27:39,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342504014] [2021-10-13 19:27:39,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2021-10-13 19:27:39,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:27:39,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-10-13 19:27:39,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2021-10-13 19:27:39,444 INFO L87 Difference]: Start difference. First operand 540 states and 1274 transitions. Second operand has 65 states, 64 states have (on average 1.03125) internal successors, (66), 64 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:27:40,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:27:40,391 INFO L93 Difference]: Finished difference Result 1054 states and 2487 transitions. [2021-10-13 19:27:40,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-10-13 19:27:40,392 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 64 states have (on average 1.03125) internal successors, (66), 64 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-10-13 19:27:40,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:27:40,394 INFO L225 Difference]: With dead ends: 1054 [2021-10-13 19:27:40,394 INFO L226 Difference]: Without dead ends: 796 [2021-10-13 19:27:40,394 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1677.9ms TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2021-10-13 19:27:40,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2021-10-13 19:27:40,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 548. [2021-10-13 19:27:40,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 545 states have (on average 2.3724770642201833) internal successors, (1293), 547 states have internal predecessors, (1293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:27:40,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 1293 transitions. [2021-10-13 19:27:40,405 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 1293 transitions. Word has length 66 [2021-10-13 19:27:40,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:27:40,405 INFO L470 AbstractCegarLoop]: Abstraction has 548 states and 1293 transitions. [2021-10-13 19:27:40,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 64 states have (on average 1.03125) internal successors, (66), 64 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:27:40,405 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 1293 transitions. [2021-10-13 19:27:40,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 19:27:40,407 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:27:40,407 INFO L512 BasicCegarLoop]: trace histogram [63, 1, 1, 1, 1] [2021-10-13 19:27:40,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2021-10-13 19:27:40,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-10-13 19:27:40,620 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:27:40,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:27:40,621 INFO L82 PathProgramCache]: Analyzing trace with hash 111882852, now seen corresponding path program 63 times [2021-10-13 19:27:40,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:27:40,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417409299] [2021-10-13 19:27:40,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:27:40,622 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:27:40,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:27:42,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:27:42,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:27:42,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417409299] [2021-10-13 19:27:42,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417409299] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:27:42,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514377027] [2021-10-13 19:27:42,579 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:27:42,579 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:27:42,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:27:42,581 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:27:42,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2021-10-13 19:27:43,411 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2021-10-13 19:27:43,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:27:43,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 66 conjunts are in the unsatisfiable core [2021-10-13 19:27:43,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:27:43,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:27:43,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514377027] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:27:43,569 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:27:43,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2021-10-13 19:27:43,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48724389] [2021-10-13 19:27:43,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-10-13 19:27:43,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:27:43,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-10-13 19:27:43,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2021-10-13 19:27:43,572 INFO L87 Difference]: Start difference. First operand 548 states and 1293 transitions. Second operand has 66 states, 65 states have (on average 1.0307692307692307) internal successors, (67), 65 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:27:44,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:27:44,638 INFO L93 Difference]: Finished difference Result 1070 states and 2525 transitions. [2021-10-13 19:27:44,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-10-13 19:27:44,639 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 65 states have (on average 1.0307692307692307) internal successors, (67), 65 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 19:27:44,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:27:44,649 INFO L225 Difference]: With dead ends: 1070 [2021-10-13 19:27:44,649 INFO L226 Difference]: Without dead ends: 808 [2021-10-13 19:27:44,650 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1764.9ms TimeCoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2021-10-13 19:27:44,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2021-10-13 19:27:44,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 556. [2021-10-13 19:27:44,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 553 states have (on average 2.37251356238698) internal successors, (1312), 555 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:27:44,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 1312 transitions. [2021-10-13 19:27:44,666 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 1312 transitions. Word has length 67 [2021-10-13 19:27:44,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:27:44,666 INFO L470 AbstractCegarLoop]: Abstraction has 556 states and 1312 transitions. [2021-10-13 19:27:44,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 65 states have (on average 1.0307692307692307) internal successors, (67), 65 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:27:44,667 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 1312 transitions. [2021-10-13 19:27:44,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-10-13 19:27:44,668 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:27:44,668 INFO L512 BasicCegarLoop]: trace histogram [64, 1, 1, 1, 1] [2021-10-13 19:27:44,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2021-10-13 19:27:44,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,67 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:27:44,883 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:27:44,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:27:44,883 INFO L82 PathProgramCache]: Analyzing trace with hash -826597451, now seen corresponding path program 64 times [2021-10-13 19:27:44,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:27:44,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895311527] [2021-10-13 19:27:44,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:27:44,884 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:27:44,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:27:46,833 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:27:46,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:27:46,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895311527] [2021-10-13 19:27:46,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895311527] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:27:46,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029750912] [2021-10-13 19:27:46,834 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:27:46,834 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:27:46,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:27:46,836 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:27:46,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2021-10-13 19:27:47,609 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:27:47,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:27:47,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 67 conjunts are in the unsatisfiable core [2021-10-13 19:27:47,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:27:47,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:27:47,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029750912] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:27:47,815 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:27:47,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2021-10-13 19:27:47,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192095824] [2021-10-13 19:27:47,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2021-10-13 19:27:47,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:27:47,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-10-13 19:27:47,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2021-10-13 19:27:47,818 INFO L87 Difference]: Start difference. First operand 556 states and 1312 transitions. Second operand has 67 states, 66 states have (on average 1.0303030303030303) internal successors, (68), 66 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:27:48,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:27:48,747 INFO L93 Difference]: Finished difference Result 1086 states and 2563 transitions. [2021-10-13 19:27:48,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-10-13 19:27:48,748 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 66 states have (on average 1.0303030303030303) internal successors, (68), 66 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-10-13 19:27:48,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:27:48,750 INFO L225 Difference]: With dead ends: 1086 [2021-10-13 19:27:48,750 INFO L226 Difference]: Without dead ends: 820 [2021-10-13 19:27:48,751 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1810.4ms TimeCoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2021-10-13 19:27:48,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2021-10-13 19:27:48,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 564. [2021-10-13 19:27:48,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 561 states have (on average 2.372549019607843) internal successors, (1331), 563 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:27:48,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 1331 transitions. [2021-10-13 19:27:48,765 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 1331 transitions. Word has length 68 [2021-10-13 19:27:48,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:27:48,766 INFO L470 AbstractCegarLoop]: Abstraction has 564 states and 1331 transitions. [2021-10-13 19:27:48,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 66 states have (on average 1.0303030303030303) internal successors, (68), 66 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:27:48,766 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 1331 transitions. [2021-10-13 19:27:48,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-10-13 19:27:48,768 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:27:48,768 INFO L512 BasicCegarLoop]: trace histogram [65, 1, 1, 1, 1] [2021-10-13 19:27:48,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2021-10-13 19:27:48,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,68 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:27:48,982 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:27:48,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:27:48,983 INFO L82 PathProgramCache]: Analyzing trace with hash 145284228, now seen corresponding path program 65 times [2021-10-13 19:27:48,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:27:48,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443821989] [2021-10-13 19:27:48,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:27:48,984 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:27:49,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:27:51,004 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:27:51,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:27:51,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443821989] [2021-10-13 19:27:51,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443821989] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:27:51,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233702698] [2021-10-13 19:27:51,005 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:27:51,005 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:27:51,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:27:51,006 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:27:51,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2021-10-13 19:27:51,828 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2021-10-13 19:27:51,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:27:51,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 68 conjunts are in the unsatisfiable core [2021-10-13 19:27:51,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:27:52,031 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:27:52,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233702698] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:27:52,032 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:27:52,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2021-10-13 19:27:52,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554671896] [2021-10-13 19:27:52,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2021-10-13 19:27:52,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:27:52,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-10-13 19:27:52,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2021-10-13 19:27:52,035 INFO L87 Difference]: Start difference. First operand 564 states and 1331 transitions. Second operand has 68 states, 67 states have (on average 1.0298507462686568) internal successors, (69), 67 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:27:53,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:27:53,185 INFO L93 Difference]: Finished difference Result 1102 states and 2601 transitions. [2021-10-13 19:27:53,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-10-13 19:27:53,185 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 67 states have (on average 1.0298507462686568) internal successors, (69), 67 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-10-13 19:27:53,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:27:53,187 INFO L225 Difference]: With dead ends: 1102 [2021-10-13 19:27:53,187 INFO L226 Difference]: Without dead ends: 832 [2021-10-13 19:27:53,188 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1860.2ms TimeCoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2021-10-13 19:27:53,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2021-10-13 19:27:53,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 572. [2021-10-13 19:27:53,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 569 states have (on average 2.3725834797891037) internal successors, (1350), 571 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:27:53,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 1350 transitions. [2021-10-13 19:27:53,202 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 1350 transitions. Word has length 69 [2021-10-13 19:27:53,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:27:53,202 INFO L470 AbstractCegarLoop]: Abstraction has 572 states and 1350 transitions. [2021-10-13 19:27:53,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 67 states have (on average 1.0298507462686568) internal successors, (69), 67 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:27:53,203 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 1350 transitions. [2021-10-13 19:27:53,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-10-13 19:27:53,204 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:27:53,204 INFO L512 BasicCegarLoop]: trace histogram [66, 1, 1, 1, 1] [2021-10-13 19:27:53,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2021-10-13 19:27:53,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,69 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:27:53,417 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:27:53,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:27:53,417 INFO L82 PathProgramCache]: Analyzing trace with hash 208845205, now seen corresponding path program 66 times [2021-10-13 19:27:53,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:27:53,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7764022] [2021-10-13 19:27:53,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:27:53,418 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:27:53,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:27:55,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:27:55,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:27:55,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7764022] [2021-10-13 19:27:55,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7764022] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:27:55,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176856517] [2021-10-13 19:27:55,456 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:27:55,456 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:27:55,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:27:55,458 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:27:55,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2021-10-13 19:27:56,312 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2021-10-13 19:27:56,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:27:56,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 69 conjunts are in the unsatisfiable core [2021-10-13 19:27:56,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:27:56,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:27:56,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176856517] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:27:56,521 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:27:56,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2021-10-13 19:27:56,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538145693] [2021-10-13 19:27:56,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2021-10-13 19:27:56,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:27:56,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-10-13 19:27:56,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2021-10-13 19:27:56,523 INFO L87 Difference]: Start difference. First operand 572 states and 1350 transitions. Second operand has 69 states, 68 states have (on average 1.0294117647058822) internal successors, (70), 68 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:27:57,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:27:57,546 INFO L93 Difference]: Finished difference Result 1118 states and 2639 transitions. [2021-10-13 19:27:57,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-10-13 19:27:57,547 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 68 states have (on average 1.0294117647058822) internal successors, (70), 68 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-10-13 19:27:57,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:27:57,550 INFO L225 Difference]: With dead ends: 1118 [2021-10-13 19:27:57,551 INFO L226 Difference]: Without dead ends: 844 [2021-10-13 19:27:57,551 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1887.7ms TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2021-10-13 19:27:57,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2021-10-13 19:27:57,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 580. [2021-10-13 19:27:57,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 577 states have (on average 2.3726169844020797) internal successors, (1369), 579 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:27:57,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 1369 transitions. [2021-10-13 19:27:57,571 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 1369 transitions. Word has length 70 [2021-10-13 19:27:57,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:27:57,572 INFO L470 AbstractCegarLoop]: Abstraction has 580 states and 1369 transitions. [2021-10-13 19:27:57,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 68 states have (on average 1.0294117647058822) internal successors, (70), 68 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:27:57,572 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 1369 transitions. [2021-10-13 19:27:57,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-13 19:27:57,575 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:27:57,575 INFO L512 BasicCegarLoop]: trace histogram [67, 1, 1, 1, 1] [2021-10-13 19:27:57,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2021-10-13 19:27:57,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,70 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:27:57,789 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:27:57,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:27:57,790 INFO L82 PathProgramCache]: Analyzing trace with hash -2115731804, now seen corresponding path program 67 times [2021-10-13 19:27:57,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:27:57,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800378841] [2021-10-13 19:27:57,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:27:57,791 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:27:57,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:27:59,854 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:27:59,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:27:59,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800378841] [2021-10-13 19:27:59,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800378841] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:27:59,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457423294] [2021-10-13 19:27:59,855 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:27:59,855 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:27:59,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:27:59,856 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:27:59,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2021-10-13 19:28:00,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:28:00,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 655 conjuncts, 70 conjunts are in the unsatisfiable core [2021-10-13 19:28:00,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:28:00,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:28:00,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457423294] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:28:00,898 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:28:00,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 68 [2021-10-13 19:28:00,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495771261] [2021-10-13 19:28:00,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2021-10-13 19:28:00,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:28:00,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-10-13 19:28:00,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2021-10-13 19:28:00,901 INFO L87 Difference]: Start difference. First operand 580 states and 1369 transitions. Second operand has 70 states, 69 states have (on average 1.0289855072463767) internal successors, (71), 69 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:28:01,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:28:01,962 INFO L93 Difference]: Finished difference Result 1134 states and 2677 transitions. [2021-10-13 19:28:01,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-10-13 19:28:01,962 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 69 states have (on average 1.0289855072463767) internal successors, (71), 69 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-10-13 19:28:01,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:28:01,966 INFO L225 Difference]: With dead ends: 1134 [2021-10-13 19:28:01,966 INFO L226 Difference]: Without dead ends: 856 [2021-10-13 19:28:01,967 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1902.5ms TimeCoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2021-10-13 19:28:01,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2021-10-13 19:28:01,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 588. [2021-10-13 19:28:01,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 585 states have (on average 2.3726495726495727) internal successors, (1388), 587 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:28:01,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 1388 transitions. [2021-10-13 19:28:01,983 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 1388 transitions. Word has length 71 [2021-10-13 19:28:01,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:28:01,983 INFO L470 AbstractCegarLoop]: Abstraction has 588 states and 1388 transitions. [2021-10-13 19:28:01,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 69 states have (on average 1.0289855072463767) internal successors, (71), 69 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:28:01,984 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 1388 transitions. [2021-10-13 19:28:01,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-10-13 19:28:01,985 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:28:01,986 INFO L512 BasicCegarLoop]: trace histogram [68, 1, 1, 1, 1] [2021-10-13 19:28:02,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2021-10-13 19:28:02,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,71 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:28:02,199 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:28:02,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:28:02,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1163175051, now seen corresponding path program 68 times [2021-10-13 19:28:02,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:28:02,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628981135] [2021-10-13 19:28:02,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:28:02,201 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:28:02,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:28:04,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:28:04,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:28:04,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628981135] [2021-10-13 19:28:04,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628981135] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:28:04,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116061663] [2021-10-13 19:28:04,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:28:04,325 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:28:04,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:28:04,326 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:28:04,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2021-10-13 19:28:05,133 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:28:05,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:28:05,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 71 conjunts are in the unsatisfiable core [2021-10-13 19:28:05,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:28:05,339 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:28:05,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116061663] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:28:05,340 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:28:05,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2021-10-13 19:28:05,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899238795] [2021-10-13 19:28:05,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2021-10-13 19:28:05,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:28:05,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-10-13 19:28:05,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2021-10-13 19:28:05,343 INFO L87 Difference]: Start difference. First operand 588 states and 1388 transitions. Second operand has 71 states, 70 states have (on average 1.0285714285714285) internal successors, (72), 70 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:28:06,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:28:06,741 INFO L93 Difference]: Finished difference Result 1150 states and 2715 transitions. [2021-10-13 19:28:06,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-10-13 19:28:06,742 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 70 states have (on average 1.0285714285714285) internal successors, (72), 70 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-10-13 19:28:06,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:28:06,744 INFO L225 Difference]: With dead ends: 1150 [2021-10-13 19:28:06,744 INFO L226 Difference]: Without dead ends: 868 [2021-10-13 19:28:06,744 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1947.9ms TimeCoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2021-10-13 19:28:06,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2021-10-13 19:28:06,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 596. [2021-10-13 19:28:06,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 593 states have (on average 2.372681281618887) internal successors, (1407), 595 states have internal predecessors, (1407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:28:06,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 1407 transitions. [2021-10-13 19:28:06,754 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 1407 transitions. Word has length 72 [2021-10-13 19:28:06,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:28:06,755 INFO L470 AbstractCegarLoop]: Abstraction has 596 states and 1407 transitions. [2021-10-13 19:28:06,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 70 states have (on average 1.0285714285714285) internal successors, (72), 70 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:28:06,755 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 1407 transitions. [2021-10-13 19:28:06,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-10-13 19:28:06,756 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:28:06,756 INFO L512 BasicCegarLoop]: trace histogram [69, 1, 1, 1, 1] [2021-10-13 19:28:06,784 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2021-10-13 19:28:06,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,72 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:28:06,957 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:28:06,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:28:06,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1698686780, now seen corresponding path program 69 times [2021-10-13 19:28:06,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:28:06,958 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891550156] [2021-10-13 19:28:06,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:28:06,959 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:28:06,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:28:09,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:28:09,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:28:09,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891550156] [2021-10-13 19:28:09,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891550156] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:28:09,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767083422] [2021-10-13 19:28:09,202 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:28:09,202 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:28:09,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:28:09,204 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:28:09,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2021-10-13 19:28:10,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2021-10-13 19:28:10,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:28:10,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 673 conjuncts, 72 conjunts are in the unsatisfiable core [2021-10-13 19:28:10,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:28:10,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:28:10,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767083422] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:28:10,354 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:28:10,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2021-10-13 19:28:10,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944712601] [2021-10-13 19:28:10,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2021-10-13 19:28:10,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:28:10,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-10-13 19:28:10,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2021-10-13 19:28:10,356 INFO L87 Difference]: Start difference. First operand 596 states and 1407 transitions. Second operand has 72 states, 71 states have (on average 1.028169014084507) internal successors, (73), 71 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:28:11,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:28:11,464 INFO L93 Difference]: Finished difference Result 1166 states and 2753 transitions. [2021-10-13 19:28:11,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-10-13 19:28:11,465 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 71 states have (on average 1.028169014084507) internal successors, (73), 71 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-10-13 19:28:11,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:28:11,468 INFO L225 Difference]: With dead ends: 1166 [2021-10-13 19:28:11,468 INFO L226 Difference]: Without dead ends: 880 [2021-10-13 19:28:11,469 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2086.2ms TimeCoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2021-10-13 19:28:11,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2021-10-13 19:28:11,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 604. [2021-10-13 19:28:11,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 601 states have (on average 2.372712146422629) internal successors, (1426), 603 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:28:11,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 1426 transitions. [2021-10-13 19:28:11,484 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 1426 transitions. Word has length 73 [2021-10-13 19:28:11,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:28:11,485 INFO L470 AbstractCegarLoop]: Abstraction has 604 states and 1426 transitions. [2021-10-13 19:28:11,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 71 states have (on average 1.028169014084507) internal successors, (73), 71 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:28:11,485 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 1426 transitions. [2021-10-13 19:28:11,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-10-13 19:28:11,487 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:28:11,487 INFO L512 BasicCegarLoop]: trace histogram [70, 1, 1, 1, 1] [2021-10-13 19:28:11,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2021-10-13 19:28:11,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2021-10-13 19:28:11,701 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:28:11,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:28:11,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1119681195, now seen corresponding path program 70 times [2021-10-13 19:28:11,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:28:11,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722397163] [2021-10-13 19:28:11,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:28:11,702 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:28:11,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:28:14,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:28:14,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:28:14,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722397163] [2021-10-13 19:28:14,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722397163] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:28:14,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002321880] [2021-10-13 19:28:14,011 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:28:14,011 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:28:14,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:28:14,013 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:28:14,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2021-10-13 19:28:14,878 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:28:14,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:28:14,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 682 conjuncts, 73 conjunts are in the unsatisfiable core [2021-10-13 19:28:14,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:28:15,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:28:15,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002321880] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:28:15,065 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:28:15,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2021-10-13 19:28:15,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187944798] [2021-10-13 19:28:15,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2021-10-13 19:28:15,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:28:15,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-10-13 19:28:15,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2021-10-13 19:28:15,068 INFO L87 Difference]: Start difference. First operand 604 states and 1426 transitions. Second operand has 73 states, 72 states have (on average 1.0277777777777777) internal successors, (74), 72 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:28:16,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:28:16,428 INFO L93 Difference]: Finished difference Result 1182 states and 2791 transitions. [2021-10-13 19:28:16,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-10-13 19:28:16,428 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 72 states have (on average 1.0277777777777777) internal successors, (74), 72 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-10-13 19:28:16,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:28:16,430 INFO L225 Difference]: With dead ends: 1182 [2021-10-13 19:28:16,430 INFO L226 Difference]: Without dead ends: 892 [2021-10-13 19:28:16,431 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2140.6ms TimeCoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2021-10-13 19:28:16,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2021-10-13 19:28:16,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 612. [2021-10-13 19:28:16,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 609 states have (on average 2.3727422003284073) internal successors, (1445), 611 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:28:16,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 1445 transitions. [2021-10-13 19:28:16,446 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 1445 transitions. Word has length 74 [2021-10-13 19:28:16,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:28:16,446 INFO L470 AbstractCegarLoop]: Abstraction has 612 states and 1445 transitions. [2021-10-13 19:28:16,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 72 states have (on average 1.0277777777777777) internal successors, (74), 72 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:28:16,446 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 1445 transitions. [2021-10-13 19:28:16,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-13 19:28:16,447 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:28:16,447 INFO L512 BasicCegarLoop]: trace histogram [71, 1, 1, 1, 1] [2021-10-13 19:28:16,475 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2021-10-13 19:28:16,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2021-10-13 19:28:16,648 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:28:16,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:28:16,649 INFO L82 PathProgramCache]: Analyzing trace with hash -350377244, now seen corresponding path program 71 times [2021-10-13 19:28:16,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:28:16,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882224856] [2021-10-13 19:28:16,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:28:16,650 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:28:16,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:28:19,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:28:19,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:28:19,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882224856] [2021-10-13 19:28:19,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882224856] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:28:19,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085035092] [2021-10-13 19:28:19,033 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:28:19,033 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:28:19,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:28:19,035 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:28:19,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2021-10-13 19:28:19,996 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2021-10-13 19:28:19,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:28:20,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 74 conjunts are in the unsatisfiable core [2021-10-13 19:28:20,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:28:20,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:28:20,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085035092] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:28:20,278 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:28:20,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 72 [2021-10-13 19:28:20,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413148349] [2021-10-13 19:28:20,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2021-10-13 19:28:20,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:28:20,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2021-10-13 19:28:20,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2021-10-13 19:28:20,281 INFO L87 Difference]: Start difference. First operand 612 states and 1445 transitions. Second operand has 74 states, 73 states have (on average 1.0273972602739727) internal successors, (75), 73 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:28:21,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:28:21,659 INFO L93 Difference]: Finished difference Result 1198 states and 2829 transitions. [2021-10-13 19:28:21,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-10-13 19:28:21,659 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 73 states have (on average 1.0273972602739727) internal successors, (75), 73 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-10-13 19:28:21,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:28:21,661 INFO L225 Difference]: With dead ends: 1198 [2021-10-13 19:28:21,661 INFO L226 Difference]: Without dead ends: 904 [2021-10-13 19:28:21,661 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2220.0ms TimeCoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2021-10-13 19:28:21,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2021-10-13 19:28:21,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 620. [2021-10-13 19:28:21,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 617 states have (on average 2.372771474878444) internal successors, (1464), 619 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:28:21,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 1464 transitions. [2021-10-13 19:28:21,676 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 1464 transitions. Word has length 75 [2021-10-13 19:28:21,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:28:21,676 INFO L470 AbstractCegarLoop]: Abstraction has 620 states and 1464 transitions. [2021-10-13 19:28:21,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 73 states have (on average 1.0273972602739727) internal successors, (75), 73 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:28:21,676 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 1464 transitions. [2021-10-13 19:28:21,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-10-13 19:28:21,677 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:28:21,678 INFO L512 BasicCegarLoop]: trace histogram [72, 1, 1, 1, 1] [2021-10-13 19:28:21,704 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2021-10-13 19:28:21,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,75 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:28:21,879 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:28:21,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:28:21,879 INFO L82 PathProgramCache]: Analyzing trace with hash 2023208757, now seen corresponding path program 72 times [2021-10-13 19:28:21,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:28:21,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096928099] [2021-10-13 19:28:21,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:28:21,881 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:28:21,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:28:24,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:28:24,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:28:24,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096928099] [2021-10-13 19:28:24,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096928099] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:28:24,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172304277] [2021-10-13 19:28:24,335 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:28:24,339 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:28:24,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:28:24,340 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:28:24,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2021-10-13 19:28:25,370 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2021-10-13 19:28:25,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:28:25,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 75 conjunts are in the unsatisfiable core [2021-10-13 19:28:25,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:28:25,558 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:28:25,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172304277] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:28:25,558 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:28:25,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2021-10-13 19:28:25,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588244591] [2021-10-13 19:28:25,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2021-10-13 19:28:25,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:28:25,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-10-13 19:28:25,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2021-10-13 19:28:25,561 INFO L87 Difference]: Start difference. First operand 620 states and 1464 transitions. Second operand has 75 states, 74 states have (on average 1.027027027027027) internal successors, (76), 74 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:28:26,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:28:26,869 INFO L93 Difference]: Finished difference Result 1214 states and 2867 transitions. [2021-10-13 19:28:26,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-10-13 19:28:26,869 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 74 states have (on average 1.027027027027027) internal successors, (76), 74 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-10-13 19:28:26,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:28:26,871 INFO L225 Difference]: With dead ends: 1214 [2021-10-13 19:28:26,871 INFO L226 Difference]: Without dead ends: 916 [2021-10-13 19:28:26,872 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2259.2ms TimeCoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2021-10-13 19:28:26,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2021-10-13 19:28:26,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 628. [2021-10-13 19:28:26,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 625 states have (on average 2.3728) internal successors, (1483), 627 states have internal predecessors, (1483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:28:26,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 1483 transitions. [2021-10-13 19:28:26,888 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 1483 transitions. Word has length 76 [2021-10-13 19:28:26,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:28:26,889 INFO L470 AbstractCegarLoop]: Abstraction has 628 states and 1483 transitions. [2021-10-13 19:28:26,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 74 states have (on average 1.027027027027027) internal successors, (76), 74 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:28:26,889 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 1483 transitions. [2021-10-13 19:28:26,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-10-13 19:28:26,890 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:28:26,890 INFO L512 BasicCegarLoop]: trace histogram [73, 1, 1, 1, 1] [2021-10-13 19:28:26,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2021-10-13 19:28:27,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2021-10-13 19:28:27,091 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:28:27,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:28:27,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1705036540, now seen corresponding path program 73 times [2021-10-13 19:28:27,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:28:27,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620094681] [2021-10-13 19:28:27,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:28:27,094 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:28:27,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:28:29,638 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:28:29,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:28:29,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620094681] [2021-10-13 19:28:29,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620094681] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:28:29,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993511456] [2021-10-13 19:28:29,639 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:28:29,639 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:28:29,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:28:29,641 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:28:29,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2021-10-13 19:28:30,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:28:30,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 709 conjuncts, 76 conjunts are in the unsatisfiable core [2021-10-13 19:28:30,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:28:30,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:28:30,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993511456] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:28:30,826 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:28:30,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 74 [2021-10-13 19:28:30,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826691584] [2021-10-13 19:28:30,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2021-10-13 19:28:30,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:28:30,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-10-13 19:28:30,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2021-10-13 19:28:30,830 INFO L87 Difference]: Start difference. First operand 628 states and 1483 transitions. Second operand has 76 states, 75 states have (on average 1.0266666666666666) internal successors, (77), 75 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:28:32,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:28:32,262 INFO L93 Difference]: Finished difference Result 1230 states and 2905 transitions. [2021-10-13 19:28:32,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-10-13 19:28:32,262 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 75 states have (on average 1.0266666666666666) internal successors, (77), 75 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-10-13 19:28:32,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:28:32,264 INFO L225 Difference]: With dead ends: 1230 [2021-10-13 19:28:32,265 INFO L226 Difference]: Without dead ends: 928 [2021-10-13 19:28:32,265 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2346.9ms TimeCoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2021-10-13 19:28:32,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2021-10-13 19:28:32,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 636. [2021-10-13 19:28:32,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 633 states have (on average 2.372827804107425) internal successors, (1502), 635 states have internal predecessors, (1502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:28:32,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 1502 transitions. [2021-10-13 19:28:32,299 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 1502 transitions. Word has length 77 [2021-10-13 19:28:32,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:28:32,299 INFO L470 AbstractCegarLoop]: Abstraction has 636 states and 1502 transitions. [2021-10-13 19:28:32,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 75 states have (on average 1.0266666666666666) internal successors, (77), 75 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:28:32,299 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 1502 transitions. [2021-10-13 19:28:32,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-10-13 19:28:32,301 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:28:32,301 INFO L512 BasicCegarLoop]: trace histogram [74, 1, 1, 1, 1] [2021-10-13 19:28:32,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2021-10-13 19:28:32,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,77 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:28:32,502 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:28:32,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:28:32,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1316523755, now seen corresponding path program 74 times [2021-10-13 19:28:32,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:28:32,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090998963] [2021-10-13 19:28:32,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:28:32,504 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:28:32,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:28:35,058 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:28:35,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:28:35,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090998963] [2021-10-13 19:28:35,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090998963] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:28:35,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099546205] [2021-10-13 19:28:35,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:28:35,061 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:28:35,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:28:35,062 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:28:35,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2021-10-13 19:28:36,076 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:28:36,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:28:36,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 718 conjuncts, 77 conjunts are in the unsatisfiable core [2021-10-13 19:28:36,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:28:36,287 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:28:36,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099546205] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:28:36,288 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:28:36,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2021-10-13 19:28:36,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340840648] [2021-10-13 19:28:36,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2021-10-13 19:28:36,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:28:36,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2021-10-13 19:28:36,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2021-10-13 19:28:36,291 INFO L87 Difference]: Start difference. First operand 636 states and 1502 transitions. Second operand has 77 states, 76 states have (on average 1.0263157894736843) internal successors, (78), 76 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:28:37,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:28:37,752 INFO L93 Difference]: Finished difference Result 1246 states and 2943 transitions. [2021-10-13 19:28:37,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-10-13 19:28:37,752 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 76 states have (on average 1.0263157894736843) internal successors, (78), 76 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-10-13 19:28:37,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:28:37,754 INFO L225 Difference]: With dead ends: 1246 [2021-10-13 19:28:37,754 INFO L226 Difference]: Without dead ends: 940 [2021-10-13 19:28:37,755 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2372.8ms TimeCoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2021-10-13 19:28:37,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2021-10-13 19:28:37,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 644. [2021-10-13 19:28:37,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 644 states, 641 states have (on average 2.372854914196568) internal successors, (1521), 643 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:28:37,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 1521 transitions. [2021-10-13 19:28:37,790 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 1521 transitions. Word has length 78 [2021-10-13 19:28:37,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:28:37,790 INFO L470 AbstractCegarLoop]: Abstraction has 644 states and 1521 transitions. [2021-10-13 19:28:37,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 76 states have (on average 1.0263157894736843) internal successors, (78), 76 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:28:37,790 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 1521 transitions. [2021-10-13 19:28:37,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-10-13 19:28:37,792 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:28:37,792 INFO L512 BasicCegarLoop]: trace histogram [75, 1, 1, 1, 1] [2021-10-13 19:28:37,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2021-10-13 19:28:37,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,78 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:28:37,993 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:28:37,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:28:37,994 INFO L82 PathProgramCache]: Analyzing trace with hash 2137437988, now seen corresponding path program 75 times [2021-10-13 19:28:37,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:28:37,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623004140] [2021-10-13 19:28:37,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:28:37,996 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:28:38,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:28:40,635 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:28:40,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:28:40,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623004140] [2021-10-13 19:28:40,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623004140] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:28:40,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966135386] [2021-10-13 19:28:40,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:28:40,637 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:28:40,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:28:40,644 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:28:40,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2021-10-13 19:28:41,722 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2021-10-13 19:28:41,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:28:41,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 78 conjunts are in the unsatisfiable core [2021-10-13 19:28:41,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:28:41,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:28:41,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966135386] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:28:41,942 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:28:41,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 76 [2021-10-13 19:28:41,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755441480] [2021-10-13 19:28:41,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2021-10-13 19:28:41,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:28:41,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2021-10-13 19:28:41,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2021-10-13 19:28:41,947 INFO L87 Difference]: Start difference. First operand 644 states and 1521 transitions. Second operand has 78 states, 77 states have (on average 1.025974025974026) internal successors, (79), 77 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:28:43,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:28:43,550 INFO L93 Difference]: Finished difference Result 1262 states and 2981 transitions. [2021-10-13 19:28:43,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-10-13 19:28:43,550 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 77 states have (on average 1.025974025974026) internal successors, (79), 77 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-10-13 19:28:43,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:28:43,552 INFO L225 Difference]: With dead ends: 1262 [2021-10-13 19:28:43,553 INFO L226 Difference]: Without dead ends: 952 [2021-10-13 19:28:43,553 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2475.3ms TimeCoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2021-10-13 19:28:43,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2021-10-13 19:28:43,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 652. [2021-10-13 19:28:43,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 649 states have (on average 2.3728813559322033) internal successors, (1540), 651 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:28:43,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 1540 transitions. [2021-10-13 19:28:43,564 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 1540 transitions. Word has length 79 [2021-10-13 19:28:43,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:28:43,565 INFO L470 AbstractCegarLoop]: Abstraction has 652 states and 1540 transitions. [2021-10-13 19:28:43,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 77 states have (on average 1.025974025974026) internal successors, (79), 77 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:28:43,565 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 1540 transitions. [2021-10-13 19:28:43,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-13 19:28:43,566 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:28:43,566 INFO L512 BasicCegarLoop]: trace histogram [76, 1, 1, 1, 1] [2021-10-13 19:28:43,593 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2021-10-13 19:28:43,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,79 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:28:43,767 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:28:43,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:28:43,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1836069621, now seen corresponding path program 76 times [2021-10-13 19:28:43,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:28:43,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905484363] [2021-10-13 19:28:43,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:28:43,769 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:28:43,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:28:46,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:28:46,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:28:46,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905484363] [2021-10-13 19:28:46,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905484363] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:28:46,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109218892] [2021-10-13 19:28:46,459 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:28:46,459 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:28:46,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:28:46,466 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:28:46,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2021-10-13 19:28:47,515 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:28:47,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:28:47,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 736 conjuncts, 79 conjunts are in the unsatisfiable core [2021-10-13 19:28:47,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:28:47,727 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:28:47,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109218892] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:28:47,728 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:28:47,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2021-10-13 19:28:47,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624521827] [2021-10-13 19:28:47,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2021-10-13 19:28:47,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:28:47,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-10-13 19:28:47,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2021-10-13 19:28:47,731 INFO L87 Difference]: Start difference. First operand 652 states and 1540 transitions. Second operand has 79 states, 78 states have (on average 1.0256410256410255) internal successors, (80), 78 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:28:49,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:28:49,391 INFO L93 Difference]: Finished difference Result 1278 states and 3019 transitions. [2021-10-13 19:28:49,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-10-13 19:28:49,391 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 78 states have (on average 1.0256410256410255) internal successors, (80), 78 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-10-13 19:28:49,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:28:49,393 INFO L225 Difference]: With dead ends: 1278 [2021-10-13 19:28:49,393 INFO L226 Difference]: Without dead ends: 964 [2021-10-13 19:28:49,393 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2504.9ms TimeCoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2021-10-13 19:28:49,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2021-10-13 19:28:49,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 660. [2021-10-13 19:28:49,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 657 states have (on average 2.3729071537290714) internal successors, (1559), 659 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:28:49,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 1559 transitions. [2021-10-13 19:28:49,403 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 1559 transitions. Word has length 80 [2021-10-13 19:28:49,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:28:49,404 INFO L470 AbstractCegarLoop]: Abstraction has 660 states and 1559 transitions. [2021-10-13 19:28:49,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 78 states have (on average 1.0256410256410255) internal successors, (80), 78 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:28:49,404 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 1559 transitions. [2021-10-13 19:28:49,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-10-13 19:28:49,405 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:28:49,405 INFO L512 BasicCegarLoop]: trace histogram [77, 1, 1, 1, 1] [2021-10-13 19:28:49,432 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2021-10-13 19:28:49,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,80 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:28:49,606 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:28:49,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:28:49,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1083584836, now seen corresponding path program 77 times [2021-10-13 19:28:49,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:28:49,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304968572] [2021-10-13 19:28:49,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:28:49,608 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:28:49,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:28:52,334 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:28:52,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:28:52,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304968572] [2021-10-13 19:28:52,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304968572] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:28:52,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563874862] [2021-10-13 19:28:52,335 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:28:52,335 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:28:52,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:28:52,337 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:28:52,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2021-10-13 19:28:53,489 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2021-10-13 19:28:53,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:28:53,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 745 conjuncts, 80 conjunts are in the unsatisfiable core [2021-10-13 19:28:53,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:28:53,712 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:28:53,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563874862] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:28:53,712 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:28:53,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 78 [2021-10-13 19:28:53,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706626238] [2021-10-13 19:28:53,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2021-10-13 19:28:53,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:28:53,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-10-13 19:28:53,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2021-10-13 19:28:53,715 INFO L87 Difference]: Start difference. First operand 660 states and 1559 transitions. Second operand has 80 states, 79 states have (on average 1.0253164556962024) internal successors, (81), 79 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:28:55,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:28:55,418 INFO L93 Difference]: Finished difference Result 1294 states and 3057 transitions. [2021-10-13 19:28:55,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-10-13 19:28:55,418 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 79 states have (on average 1.0253164556962024) internal successors, (81), 79 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-10-13 19:28:55,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:28:55,420 INFO L225 Difference]: With dead ends: 1294 [2021-10-13 19:28:55,420 INFO L226 Difference]: Without dead ends: 976 [2021-10-13 19:28:55,420 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2544.6ms TimeCoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2021-10-13 19:28:55,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2021-10-13 19:28:55,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 668. [2021-10-13 19:28:55,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 665 states have (on average 2.3729323308270676) internal successors, (1578), 667 states have internal predecessors, (1578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:28:55,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 1578 transitions. [2021-10-13 19:28:55,431 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 1578 transitions. Word has length 81 [2021-10-13 19:28:55,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:28:55,431 INFO L470 AbstractCegarLoop]: Abstraction has 668 states and 1578 transitions. [2021-10-13 19:28:55,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 79 states have (on average 1.0253164556962024) internal successors, (81), 79 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:28:55,432 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 1578 transitions. [2021-10-13 19:28:55,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-10-13 19:28:55,433 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:28:55,433 INFO L512 BasicCegarLoop]: trace histogram [78, 1, 1, 1, 1] [2021-10-13 19:28:55,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2021-10-13 19:28:55,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,81 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:28:55,634 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:28:55,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:28:55,635 INFO L82 PathProgramCache]: Analyzing trace with hash -768607019, now seen corresponding path program 78 times [2021-10-13 19:28:55,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:28:55,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258612107] [2021-10-13 19:28:55,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:28:55,635 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:28:55,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:28:58,516 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:28:58,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:28:58,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258612107] [2021-10-13 19:28:58,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258612107] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:28:58,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229914110] [2021-10-13 19:28:58,517 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:28:58,517 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:28:58,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:28:58,519 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:28:58,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2021-10-13 19:28:59,673 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 40 check-sat command(s) [2021-10-13 19:28:59,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:28:59,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 754 conjuncts, 81 conjunts are in the unsatisfiable core [2021-10-13 19:28:59,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:28:59,885 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:28:59,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229914110] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:28:59,885 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:28:59,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2021-10-13 19:28:59,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698719541] [2021-10-13 19:28:59,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2021-10-13 19:28:59,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:28:59,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2021-10-13 19:28:59,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2021-10-13 19:28:59,888 INFO L87 Difference]: Start difference. First operand 668 states and 1578 transitions. Second operand has 81 states, 80 states have (on average 1.025) internal successors, (82), 80 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:29:02,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:29:02,076 INFO L93 Difference]: Finished difference Result 1310 states and 3095 transitions. [2021-10-13 19:29:02,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-10-13 19:29:02,076 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 80 states have (on average 1.025) internal successors, (82), 80 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-10-13 19:29:02,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:29:02,078 INFO L225 Difference]: With dead ends: 1310 [2021-10-13 19:29:02,078 INFO L226 Difference]: Without dead ends: 988 [2021-10-13 19:29:02,079 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2653.4ms TimeCoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2021-10-13 19:29:02,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2021-10-13 19:29:02,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 676. [2021-10-13 19:29:02,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 676 states, 673 states have (on average 2.37295690936107) internal successors, (1597), 675 states have internal predecessors, (1597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:29:02,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 1597 transitions. [2021-10-13 19:29:02,090 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 1597 transitions. Word has length 82 [2021-10-13 19:29:02,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:29:02,090 INFO L470 AbstractCegarLoop]: Abstraction has 676 states and 1597 transitions. [2021-10-13 19:29:02,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 80 states have (on average 1.025) internal successors, (82), 80 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:29:02,090 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 1597 transitions. [2021-10-13 19:29:02,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-10-13 19:29:02,092 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:29:02,092 INFO L512 BasicCegarLoop]: trace histogram [79, 1, 1, 1, 1] [2021-10-13 19:29:02,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2021-10-13 19:29:02,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2021-10-13 19:29:02,293 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:29:02,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:29:02,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1942987620, now seen corresponding path program 79 times [2021-10-13 19:29:02,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:29:02,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256678702] [2021-10-13 19:29:02,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:29:02,294 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:29:02,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:29:05,264 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:29:05,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:29:05,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256678702] [2021-10-13 19:29:05,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256678702] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:29:05,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123351914] [2021-10-13 19:29:05,265 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:29:05,265 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:29:05,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:29:05,268 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:29:05,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2021-10-13 19:29:06,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:29:06,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 763 conjuncts, 82 conjunts are in the unsatisfiable core [2021-10-13 19:29:06,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:29:06,624 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:29:06,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123351914] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:29:06,625 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:29:06,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 80 [2021-10-13 19:29:06,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573368505] [2021-10-13 19:29:06,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2021-10-13 19:29:06,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:29:06,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-10-13 19:29:06,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2021-10-13 19:29:06,628 INFO L87 Difference]: Start difference. First operand 676 states and 1597 transitions. Second operand has 82 states, 81 states have (on average 1.0246913580246915) internal successors, (83), 81 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:29:08,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:29:08,598 INFO L93 Difference]: Finished difference Result 1326 states and 3133 transitions. [2021-10-13 19:29:08,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-10-13 19:29:08,598 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 81 states have (on average 1.0246913580246915) internal successors, (83), 81 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-10-13 19:29:08,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:29:08,600 INFO L225 Difference]: With dead ends: 1326 [2021-10-13 19:29:08,600 INFO L226 Difference]: Without dead ends: 1000 [2021-10-13 19:29:08,600 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2758.7ms TimeCoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2021-10-13 19:29:08,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2021-10-13 19:29:08,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 684. [2021-10-13 19:29:08,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 681 states have (on average 2.372980910425844) internal successors, (1616), 683 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:29:08,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1616 transitions. [2021-10-13 19:29:08,610 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1616 transitions. Word has length 83 [2021-10-13 19:29:08,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:29:08,611 INFO L470 AbstractCegarLoop]: Abstraction has 684 states and 1616 transitions. [2021-10-13 19:29:08,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 81 states have (on average 1.0246913580246915) internal successors, (83), 81 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:29:08,611 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1616 transitions. [2021-10-13 19:29:08,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-10-13 19:29:08,612 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:29:08,612 INFO L512 BasicCegarLoop]: trace histogram [80, 1, 1, 1, 1] [2021-10-13 19:29:08,640 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2021-10-13 19:29:08,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,83 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:29:08,820 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:29:08,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:29:08,820 INFO L82 PathProgramCache]: Analyzing trace with hash 103075509, now seen corresponding path program 80 times [2021-10-13 19:29:08,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:29:08,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428727756] [2021-10-13 19:29:08,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:29:08,821 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:29:08,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:29:11,797 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:29:11,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:29:11,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428727756] [2021-10-13 19:29:11,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428727756] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:29:11,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693256545] [2021-10-13 19:29:11,798 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:29:11,798 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:29:11,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:29:11,800 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:29:11,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2021-10-13 19:29:12,946 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:29:12,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:29:12,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 772 conjuncts, 83 conjunts are in the unsatisfiable core [2021-10-13 19:29:12,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:29:13,177 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:29:13,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693256545] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:29:13,177 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:29:13,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 81 [2021-10-13 19:29:13,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755660133] [2021-10-13 19:29:13,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2021-10-13 19:29:13,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:29:13,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2021-10-13 19:29:13,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2021-10-13 19:29:13,181 INFO L87 Difference]: Start difference. First operand 684 states and 1616 transitions. Second operand has 83 states, 82 states have (on average 1.024390243902439) internal successors, (84), 82 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:29:15,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:29:15,152 INFO L93 Difference]: Finished difference Result 1342 states and 3171 transitions. [2021-10-13 19:29:15,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-10-13 19:29:15,153 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 82 states have (on average 1.024390243902439) internal successors, (84), 82 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-10-13 19:29:15,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:29:15,155 INFO L225 Difference]: With dead ends: 1342 [2021-10-13 19:29:15,155 INFO L226 Difference]: Without dead ends: 1012 [2021-10-13 19:29:15,155 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2802.5ms TimeCoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2021-10-13 19:29:15,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2021-10-13 19:29:15,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 692. [2021-10-13 19:29:15,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 689 states have (on average 2.3730043541364294) internal successors, (1635), 691 states have internal predecessors, (1635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:29:15,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1635 transitions. [2021-10-13 19:29:15,166 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1635 transitions. Word has length 84 [2021-10-13 19:29:15,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:29:15,166 INFO L470 AbstractCegarLoop]: Abstraction has 692 states and 1635 transitions. [2021-10-13 19:29:15,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 82 states have (on average 1.024390243902439) internal successors, (84), 82 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:29:15,166 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1635 transitions. [2021-10-13 19:29:15,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-13 19:29:15,168 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:29:15,168 INFO L512 BasicCegarLoop]: trace histogram [81, 1, 1, 1, 1] [2021-10-13 19:29:15,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2021-10-13 19:29:15,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2021-10-13 19:29:15,384 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:29:15,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:29:15,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1099625084, now seen corresponding path program 81 times [2021-10-13 19:29:15,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:29:15,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814999710] [2021-10-13 19:29:15,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:29:15,385 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:29:15,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:29:18,470 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:29:18,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:29:18,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814999710] [2021-10-13 19:29:18,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814999710] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:29:18,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426170943] [2021-10-13 19:29:18,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:29:18,471 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:29:18,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:29:18,474 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:29:18,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2021-10-13 19:29:19,672 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2021-10-13 19:29:19,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:29:19,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 781 conjuncts, 84 conjunts are in the unsatisfiable core [2021-10-13 19:29:19,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:29:19,889 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:29:19,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426170943] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:29:19,890 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:29:19,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 82 [2021-10-13 19:29:19,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774212868] [2021-10-13 19:29:19,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2021-10-13 19:29:19,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:29:19,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-10-13 19:29:19,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2021-10-13 19:29:19,893 INFO L87 Difference]: Start difference. First operand 692 states and 1635 transitions. Second operand has 84 states, 83 states have (on average 1.0240963855421688) internal successors, (85), 83 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:29:21,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:29:21,868 INFO L93 Difference]: Finished difference Result 1358 states and 3209 transitions. [2021-10-13 19:29:21,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-10-13 19:29:21,868 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 83 states have (on average 1.0240963855421688) internal successors, (85), 83 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-10-13 19:29:21,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:29:21,870 INFO L225 Difference]: With dead ends: 1358 [2021-10-13 19:29:21,870 INFO L226 Difference]: Without dead ends: 1024 [2021-10-13 19:29:21,871 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2904.8ms TimeCoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2021-10-13 19:29:21,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2021-10-13 19:29:21,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 700. [2021-10-13 19:29:21,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 697 states have (on average 2.3730272596843616) internal successors, (1654), 699 states have internal predecessors, (1654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:29:21,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 1654 transitions. [2021-10-13 19:29:21,881 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 1654 transitions. Word has length 85 [2021-10-13 19:29:21,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:29:21,881 INFO L470 AbstractCegarLoop]: Abstraction has 700 states and 1654 transitions. [2021-10-13 19:29:21,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 83 states have (on average 1.0240963855421688) internal successors, (85), 83 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:29:21,881 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 1654 transitions. [2021-10-13 19:29:21,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-10-13 19:29:21,882 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:29:21,882 INFO L512 BasicCegarLoop]: trace histogram [82, 1, 1, 1, 1] [2021-10-13 19:29:21,910 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2021-10-13 19:29:22,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2021-10-13 19:29:22,084 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:29:22,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:29:22,084 INFO L82 PathProgramCache]: Analyzing trace with hash 271362197, now seen corresponding path program 82 times [2021-10-13 19:29:22,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:29:22,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291051360] [2021-10-13 19:29:22,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:29:22,085 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:29:22,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:29:25,156 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:29:25,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:29:25,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291051360] [2021-10-13 19:29:25,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291051360] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:29:25,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076284110] [2021-10-13 19:29:25,157 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:29:25,157 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:29:25,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:29:25,159 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:29:25,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2021-10-13 19:29:26,363 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:29:26,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:29:26,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 790 conjuncts, 85 conjunts are in the unsatisfiable core [2021-10-13 19:29:26,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:29:26,601 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:29:26,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076284110] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:29:26,602 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:29:26,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 83 [2021-10-13 19:29:26,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48517077] [2021-10-13 19:29:26,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2021-10-13 19:29:26,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:29:26,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2021-10-13 19:29:26,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2021-10-13 19:29:26,605 INFO L87 Difference]: Start difference. First operand 700 states and 1654 transitions. Second operand has 85 states, 84 states have (on average 1.0238095238095237) internal successors, (86), 84 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:29:28,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:29:28,653 INFO L93 Difference]: Finished difference Result 1374 states and 3247 transitions. [2021-10-13 19:29:28,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-10-13 19:29:28,653 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 84 states have (on average 1.0238095238095237) internal successors, (86), 84 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-10-13 19:29:28,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:29:28,655 INFO L225 Difference]: With dead ends: 1374 [2021-10-13 19:29:28,655 INFO L226 Difference]: Without dead ends: 1036 [2021-10-13 19:29:28,656 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2878.7ms TimeCoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2021-10-13 19:29:28,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2021-10-13 19:29:28,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 708. [2021-10-13 19:29:28,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 705 states have (on average 2.373049645390071) internal successors, (1673), 707 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:29:28,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 1673 transitions. [2021-10-13 19:29:28,666 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 1673 transitions. Word has length 86 [2021-10-13 19:29:28,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:29:28,666 INFO L470 AbstractCegarLoop]: Abstraction has 708 states and 1673 transitions. [2021-10-13 19:29:28,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 84 states have (on average 1.0238095238095237) internal successors, (86), 84 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:29:28,667 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 1673 transitions. [2021-10-13 19:29:28,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-10-13 19:29:28,668 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:29:28,668 INFO L512 BasicCegarLoop]: trace histogram [83, 1, 1, 1, 1] [2021-10-13 19:29:28,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2021-10-13 19:29:28,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2021-10-13 19:29:28,869 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:29:28,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:29:28,870 INFO L82 PathProgramCache]: Analyzing trace with hash -177705052, now seen corresponding path program 83 times [2021-10-13 19:29:28,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:29:28,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844788770] [2021-10-13 19:29:28,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:29:28,871 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:29:28,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:29:32,005 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:29:32,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:29:32,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844788770] [2021-10-13 19:29:32,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844788770] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:29:32,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830928982] [2021-10-13 19:29:32,006 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:29:32,006 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:29:32,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:29:32,007 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:29:32,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2021-10-13 19:29:33,223 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2021-10-13 19:29:33,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:29:33,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 799 conjuncts, 86 conjunts are in the unsatisfiable core [2021-10-13 19:29:33,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:29:33,508 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:29:33,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830928982] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:29:33,509 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:29:33,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 84 [2021-10-13 19:29:33,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260540563] [2021-10-13 19:29:33,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2021-10-13 19:29:33,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:29:33,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2021-10-13 19:29:33,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2021-10-13 19:29:33,513 INFO L87 Difference]: Start difference. First operand 708 states and 1673 transitions. Second operand has 86 states, 85 states have (on average 1.0235294117647058) internal successors, (87), 85 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:29:35,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:29:35,899 INFO L93 Difference]: Finished difference Result 1390 states and 3285 transitions. [2021-10-13 19:29:35,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-10-13 19:29:35,899 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 85 states have (on average 1.0235294117647058) internal successors, (87), 85 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-10-13 19:29:35,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:29:35,901 INFO L225 Difference]: With dead ends: 1390 [2021-10-13 19:29:35,901 INFO L226 Difference]: Without dead ends: 1048 [2021-10-13 19:29:35,902 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2932.9ms TimeCoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2021-10-13 19:29:35,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2021-10-13 19:29:35,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 716. [2021-10-13 19:29:35,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 713 states have (on average 2.373071528751753) internal successors, (1692), 715 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:29:35,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 1692 transitions. [2021-10-13 19:29:35,915 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 1692 transitions. Word has length 87 [2021-10-13 19:29:35,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:29:35,915 INFO L470 AbstractCegarLoop]: Abstraction has 716 states and 1692 transitions. [2021-10-13 19:29:35,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 85 states have (on average 1.0235294117647058) internal successors, (87), 85 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:29:35,916 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 1692 transitions. [2021-10-13 19:29:35,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-10-13 19:29:35,917 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:29:35,917 INFO L512 BasicCegarLoop]: trace histogram [84, 1, 1, 1, 1] [2021-10-13 19:29:35,946 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0 [2021-10-13 19:29:36,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,87 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:29:36,118 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:29:36,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:29:36,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1213887883, now seen corresponding path program 84 times [2021-10-13 19:29:36,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:29:36,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352463697] [2021-10-13 19:29:36,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:29:36,119 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:29:36,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:29:39,397 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:29:39,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:29:39,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352463697] [2021-10-13 19:29:39,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352463697] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:29:39,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134639261] [2021-10-13 19:29:39,399 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:29:39,399 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:29:39,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:29:39,400 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:29:39,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2021-10-13 19:29:40,730 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2021-10-13 19:29:40,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:29:40,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 808 conjuncts, 87 conjunts are in the unsatisfiable core [2021-10-13 19:29:40,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:29:40,958 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:29:40,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134639261] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:29:40,958 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:29:40,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2021-10-13 19:29:40,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545382770] [2021-10-13 19:29:40,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2021-10-13 19:29:40,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:29:40,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2021-10-13 19:29:40,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2021-10-13 19:29:40,962 INFO L87 Difference]: Start difference. First operand 716 states and 1692 transitions. Second operand has 87 states, 86 states have (on average 1.0232558139534884) internal successors, (88), 86 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:29:43,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:29:43,307 INFO L93 Difference]: Finished difference Result 1406 states and 3323 transitions. [2021-10-13 19:29:43,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-10-13 19:29:43,308 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 86 states have (on average 1.0232558139534884) internal successors, (88), 86 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-10-13 19:29:43,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:29:43,310 INFO L225 Difference]: With dead ends: 1406 [2021-10-13 19:29:43,310 INFO L226 Difference]: Without dead ends: 1060 [2021-10-13 19:29:43,310 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3092.1ms TimeCoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2021-10-13 19:29:43,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2021-10-13 19:29:43,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 724. [2021-10-13 19:29:43,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 721 states have (on average 2.3730929264909846) internal successors, (1711), 723 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:29:43,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1711 transitions. [2021-10-13 19:29:43,321 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1711 transitions. Word has length 88 [2021-10-13 19:29:43,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:29:43,321 INFO L470 AbstractCegarLoop]: Abstraction has 724 states and 1711 transitions. [2021-10-13 19:29:43,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 86 states have (on average 1.0232558139534884) internal successors, (88), 86 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:29:43,322 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1711 transitions. [2021-10-13 19:29:43,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-10-13 19:29:43,323 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:29:43,323 INFO L512 BasicCegarLoop]: trace histogram [85, 1, 1, 1, 1] [2021-10-13 19:29:43,351 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2021-10-13 19:29:43,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,88 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:29:43,524 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:29:43,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:29:43,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1024182724, now seen corresponding path program 85 times [2021-10-13 19:29:43,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:29:43,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561247431] [2021-10-13 19:29:43,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:29:43,525 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:29:43,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:29:46,829 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:29:46,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:29:46,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561247431] [2021-10-13 19:29:46,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561247431] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:29:46,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082601492] [2021-10-13 19:29:46,830 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:29:46,830 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:29:46,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:29:46,831 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:29:46,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2021-10-13 19:29:48,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:29:48,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 817 conjuncts, 88 conjunts are in the unsatisfiable core [2021-10-13 19:29:48,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:29:48,412 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:29:48,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082601492] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:29:48,412 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:29:48,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 86 [2021-10-13 19:29:48,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651037822] [2021-10-13 19:29:48,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2021-10-13 19:29:48,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:29:48,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-10-13 19:29:48,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2021-10-13 19:29:48,417 INFO L87 Difference]: Start difference. First operand 724 states and 1711 transitions. Second operand has 88 states, 87 states have (on average 1.0229885057471264) internal successors, (89), 87 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:29:50,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:29:50,729 INFO L93 Difference]: Finished difference Result 1422 states and 3361 transitions. [2021-10-13 19:29:50,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-10-13 19:29:50,730 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 87 states have (on average 1.0229885057471264) internal successors, (89), 87 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-10-13 19:29:50,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:29:50,732 INFO L225 Difference]: With dead ends: 1422 [2021-10-13 19:29:50,732 INFO L226 Difference]: Without dead ends: 1072 [2021-10-13 19:29:50,733 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3078.4ms TimeCoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2021-10-13 19:29:50,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2021-10-13 19:29:50,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 732. [2021-10-13 19:29:50,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 729 states have (on average 2.373113854595336) internal successors, (1730), 731 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:29:50,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 1730 transitions. [2021-10-13 19:29:50,746 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 1730 transitions. Word has length 89 [2021-10-13 19:29:50,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:29:50,746 INFO L470 AbstractCegarLoop]: Abstraction has 732 states and 1730 transitions. [2021-10-13 19:29:50,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 87 states have (on average 1.0229885057471264) internal successors, (89), 87 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:29:50,746 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 1730 transitions. [2021-10-13 19:29:50,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-13 19:29:50,748 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:29:50,748 INFO L512 BasicCegarLoop]: trace histogram [86, 1, 1, 1, 1] [2021-10-13 19:29:50,777 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2021-10-13 19:29:50,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,89 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:29:50,949 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:29:50,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:29:50,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1684894805, now seen corresponding path program 86 times [2021-10-13 19:29:50,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:29:50,950 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270130168] [2021-10-13 19:29:50,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:29:50,951 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:29:50,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:29:54,405 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:29:54,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:29:54,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270130168] [2021-10-13 19:29:54,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270130168] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:29:54,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730638121] [2021-10-13 19:29:54,406 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:29:54,406 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:29:54,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:29:54,408 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:29:54,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2021-10-13 19:29:55,717 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:29:55,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:29:55,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 826 conjuncts, 89 conjunts are in the unsatisfiable core [2021-10-13 19:29:55,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:29:55,965 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:29:55,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730638121] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:29:55,965 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:29:55,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 87 [2021-10-13 19:29:55,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175068496] [2021-10-13 19:29:55,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2021-10-13 19:29:55,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:29:55,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2021-10-13 19:29:55,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2021-10-13 19:29:55,969 INFO L87 Difference]: Start difference. First operand 732 states and 1730 transitions. Second operand has 89 states, 88 states have (on average 1.0227272727272727) internal successors, (90), 88 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:29:58,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:29:58,469 INFO L93 Difference]: Finished difference Result 1438 states and 3399 transitions. [2021-10-13 19:29:58,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-10-13 19:29:58,469 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 88 states have (on average 1.0227272727272727) internal successors, (90), 88 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-10-13 19:29:58,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:29:58,479 INFO L225 Difference]: With dead ends: 1438 [2021-10-13 19:29:58,480 INFO L226 Difference]: Without dead ends: 1084 [2021-10-13 19:29:58,480 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3214.4ms TimeCoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2021-10-13 19:29:58,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2021-10-13 19:29:58,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 740. [2021-10-13 19:29:58,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 737 states have (on average 2.373134328358209) internal successors, (1749), 739 states have internal predecessors, (1749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:29:58,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 1749 transitions. [2021-10-13 19:29:58,528 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 1749 transitions. Word has length 90 [2021-10-13 19:29:58,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:29:58,529 INFO L470 AbstractCegarLoop]: Abstraction has 740 states and 1749 transitions. [2021-10-13 19:29:58,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 88 states have (on average 1.0227272727272727) internal successors, (90), 88 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:29:58,529 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 1749 transitions. [2021-10-13 19:29:58,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-10-13 19:29:58,531 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:29:58,531 INFO L512 BasicCegarLoop]: trace histogram [87, 1, 1, 1, 1] [2021-10-13 19:29:58,570 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2021-10-13 19:29:58,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable93 [2021-10-13 19:29:58,740 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:29:58,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:29:58,740 INFO L82 PathProgramCache]: Analyzing trace with hash 692132836, now seen corresponding path program 87 times [2021-10-13 19:29:58,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:29:58,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216191890] [2021-10-13 19:29:58,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:29:58,741 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:29:58,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:30:02,205 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:30:02,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:30:02,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216191890] [2021-10-13 19:30:02,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216191890] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:30:02,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524008716] [2021-10-13 19:30:02,206 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:30:02,206 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:30:02,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:30:02,207 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:30:02,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2021-10-13 19:30:03,613 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 45 check-sat command(s) [2021-10-13 19:30:03,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:30:03,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 835 conjuncts, 90 conjunts are in the unsatisfiable core [2021-10-13 19:30:03,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:30:03,861 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:30:03,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524008716] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:30:03,861 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:30:03,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 88 [2021-10-13 19:30:03,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015902210] [2021-10-13 19:30:03,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2021-10-13 19:30:03,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:30:03,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2021-10-13 19:30:03,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2021-10-13 19:30:03,864 INFO L87 Difference]: Start difference. First operand 740 states and 1749 transitions. Second operand has 90 states, 89 states have (on average 1.0224719101123596) internal successors, (91), 89 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:30:06,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:30:06,743 INFO L93 Difference]: Finished difference Result 1454 states and 3437 transitions. [2021-10-13 19:30:06,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-10-13 19:30:06,744 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 89 states have (on average 1.0224719101123596) internal successors, (91), 89 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-10-13 19:30:06,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:30:06,746 INFO L225 Difference]: With dead ends: 1454 [2021-10-13 19:30:06,746 INFO L226 Difference]: Without dead ends: 1096 [2021-10-13 19:30:06,746 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3263.7ms TimeCoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2021-10-13 19:30:06,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2021-10-13 19:30:06,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 748. [2021-10-13 19:30:06,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 748 states, 745 states have (on average 2.3731543624161073) internal successors, (1768), 747 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:30:06,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 1768 transitions. [2021-10-13 19:30:06,757 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 1768 transitions. Word has length 91 [2021-10-13 19:30:06,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:30:06,757 INFO L470 AbstractCegarLoop]: Abstraction has 748 states and 1768 transitions. [2021-10-13 19:30:06,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 89 states have (on average 1.0224719101123596) internal successors, (91), 89 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:30:06,757 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 1768 transitions. [2021-10-13 19:30:06,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-10-13 19:30:06,759 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:30:06,759 INFO L512 BasicCegarLoop]: trace histogram [88, 1, 1, 1, 1] [2021-10-13 19:30:06,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2021-10-13 19:30:06,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,91 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:30:06,960 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:30:06,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:30:06,960 INFO L82 PathProgramCache]: Analyzing trace with hash -18717131, now seen corresponding path program 88 times [2021-10-13 19:30:06,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:30:06,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249824555] [2021-10-13 19:30:06,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:30:06,961 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:30:07,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:30:10,551 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:30:10,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:30:10,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249824555] [2021-10-13 19:30:10,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249824555] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:30:10,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337990603] [2021-10-13 19:30:10,552 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:30:10,553 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:30:10,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:30:10,553 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:30:10,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2021-10-13 19:30:11,936 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:30:11,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:30:11,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 91 conjunts are in the unsatisfiable core [2021-10-13 19:30:11,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:30:12,172 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:30:12,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337990603] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:30:12,173 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:30:12,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 89 [2021-10-13 19:30:12,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979037549] [2021-10-13 19:30:12,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2021-10-13 19:30:12,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:30:12,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2021-10-13 19:30:12,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2021-10-13 19:30:12,176 INFO L87 Difference]: Start difference. First operand 748 states and 1768 transitions. Second operand has 91 states, 90 states have (on average 1.0222222222222221) internal successors, (92), 90 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:30:14,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:30:14,765 INFO L93 Difference]: Finished difference Result 1470 states and 3475 transitions. [2021-10-13 19:30:14,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-10-13 19:30:14,766 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 90 states have (on average 1.0222222222222221) internal successors, (92), 90 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-10-13 19:30:14,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:30:14,768 INFO L225 Difference]: With dead ends: 1470 [2021-10-13 19:30:14,768 INFO L226 Difference]: Without dead ends: 1108 [2021-10-13 19:30:14,769 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3389.7ms TimeCoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2021-10-13 19:30:14,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2021-10-13 19:30:14,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 756. [2021-10-13 19:30:14,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 753 states have (on average 2.3731739707835326) internal successors, (1787), 755 states have internal predecessors, (1787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:30:14,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 1787 transitions. [2021-10-13 19:30:14,782 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 1787 transitions. Word has length 92 [2021-10-13 19:30:14,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:30:14,782 INFO L470 AbstractCegarLoop]: Abstraction has 756 states and 1787 transitions. [2021-10-13 19:30:14,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 90 states have (on average 1.0222222222222221) internal successors, (92), 90 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:30:14,782 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 1787 transitions. [2021-10-13 19:30:14,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-10-13 19:30:14,784 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:30:14,784 INFO L512 BasicCegarLoop]: trace histogram [89, 1, 1, 1, 1] [2021-10-13 19:30:14,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2021-10-13 19:30:14,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,92 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:30:15,005 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:30:15,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:30:15,006 INFO L82 PathProgramCache]: Analyzing trace with hash -580229628, now seen corresponding path program 89 times [2021-10-13 19:30:15,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:30:15,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574272558] [2021-10-13 19:30:15,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:30:15,008 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:30:15,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:30:18,933 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:30:18,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:30:18,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574272558] [2021-10-13 19:30:18,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574272558] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:30:18,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030363659] [2021-10-13 19:30:18,935 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:30:18,935 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:30:18,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:30:18,936 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:30:18,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2021-10-13 19:30:20,425 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2021-10-13 19:30:20,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:30:20,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 853 conjuncts, 92 conjunts are in the unsatisfiable core [2021-10-13 19:30:20,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:30:20,665 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:30:20,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030363659] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:30:20,666 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:30:20,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 90 [2021-10-13 19:30:20,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531513949] [2021-10-13 19:30:20,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2021-10-13 19:30:20,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:30:20,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2021-10-13 19:30:20,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2021-10-13 19:30:20,669 INFO L87 Difference]: Start difference. First operand 756 states and 1787 transitions. Second operand has 92 states, 91 states have (on average 1.021978021978022) internal successors, (93), 91 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:30:23,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:30:23,547 INFO L93 Difference]: Finished difference Result 1486 states and 3513 transitions. [2021-10-13 19:30:23,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-10-13 19:30:23,548 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 91 states have (on average 1.021978021978022) internal successors, (93), 91 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-10-13 19:30:23,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:30:23,550 INFO L225 Difference]: With dead ends: 1486 [2021-10-13 19:30:23,550 INFO L226 Difference]: Without dead ends: 1120 [2021-10-13 19:30:23,551 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3640.8ms TimeCoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2021-10-13 19:30:23,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1120 states. [2021-10-13 19:30:23,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 764. [2021-10-13 19:30:23,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764 states, 761 states have (on average 2.373193166885677) internal successors, (1806), 763 states have internal predecessors, (1806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:30:23,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 1806 transitions. [2021-10-13 19:30:23,563 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 1806 transitions. Word has length 93 [2021-10-13 19:30:23,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:30:23,564 INFO L470 AbstractCegarLoop]: Abstraction has 764 states and 1806 transitions. [2021-10-13 19:30:23,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 91 states have (on average 1.021978021978022) internal successors, (93), 91 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:30:23,564 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 1806 transitions. [2021-10-13 19:30:23,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-10-13 19:30:23,565 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:30:23,565 INFO L512 BasicCegarLoop]: trace histogram [90, 1, 1, 1, 1] [2021-10-13 19:30:23,594 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2021-10-13 19:30:23,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 93 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2021-10-13 19:30:23,766 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:30:23,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:30:23,767 INFO L82 PathProgramCache]: Analyzing trace with hash -807247851, now seen corresponding path program 90 times [2021-10-13 19:30:23,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:30:23,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008920555] [2021-10-13 19:30:23,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:30:23,768 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:30:23,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:30:27,943 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:30:27,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:30:27,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008920555] [2021-10-13 19:30:27,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008920555] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:30:27,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202276751] [2021-10-13 19:30:27,944 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:30:27,944 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:30:27,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:30:27,946 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:30:27,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2021-10-13 19:30:29,455 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 46 check-sat command(s) [2021-10-13 19:30:29,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:30:29,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 93 conjunts are in the unsatisfiable core [2021-10-13 19:30:29,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:30:29,800 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:30:29,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202276751] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:30:29,801 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:30:29,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 91 [2021-10-13 19:30:29,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555528189] [2021-10-13 19:30:29,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2021-10-13 19:30:29,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:30:29,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2021-10-13 19:30:29,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2021-10-13 19:30:29,806 INFO L87 Difference]: Start difference. First operand 764 states and 1806 transitions. Second operand has 93 states, 92 states have (on average 1.0217391304347827) internal successors, (94), 92 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:30:32,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:30:32,702 INFO L93 Difference]: Finished difference Result 1502 states and 3551 transitions. [2021-10-13 19:30:32,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-10-13 19:30:32,702 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 92 states have (on average 1.0217391304347827) internal successors, (94), 92 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-10-13 19:30:32,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:30:32,704 INFO L225 Difference]: With dead ends: 1502 [2021-10-13 19:30:32,705 INFO L226 Difference]: Without dead ends: 1132 [2021-10-13 19:30:32,705 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3967.6ms TimeCoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2021-10-13 19:30:32,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2021-10-13 19:30:32,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 772. [2021-10-13 19:30:32,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 769 states have (on average 2.373211963589077) internal successors, (1825), 771 states have internal predecessors, (1825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:30:32,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 1825 transitions. [2021-10-13 19:30:32,717 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 1825 transitions. Word has length 94 [2021-10-13 19:30:32,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:30:32,717 INFO L470 AbstractCegarLoop]: Abstraction has 772 states and 1825 transitions. [2021-10-13 19:30:32,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 92 states have (on average 1.0217391304347827) internal successors, (94), 92 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:30:32,717 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 1825 transitions. [2021-10-13 19:30:32,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-13 19:30:32,718 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:30:32,719 INFO L512 BasicCegarLoop]: trace histogram [91, 1, 1, 1, 1] [2021-10-13 19:30:32,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2021-10-13 19:30:32,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,94 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:30:32,920 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:30:32,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:30:32,920 INFO L82 PathProgramCache]: Analyzing trace with hash 745121828, now seen corresponding path program 91 times [2021-10-13 19:30:32,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:30:32,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405049859] [2021-10-13 19:30:32,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:30:32,921 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:30:32,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:30:36,775 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:30:36,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:30:36,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405049859] [2021-10-13 19:30:36,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405049859] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:30:36,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193572824] [2021-10-13 19:30:36,776 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:30:36,777 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:30:36,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:30:36,778 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:30:36,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2021-10-13 19:30:38,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:30:38,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 871 conjuncts, 94 conjunts are in the unsatisfiable core [2021-10-13 19:30:38,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:30:38,469 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:30:38,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193572824] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:30:38,469 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:30:38,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 92 [2021-10-13 19:30:38,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365988811] [2021-10-13 19:30:38,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2021-10-13 19:30:38,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:30:38,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-10-13 19:30:38,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2021-10-13 19:30:38,472 INFO L87 Difference]: Start difference. First operand 772 states and 1825 transitions. Second operand has 94 states, 93 states have (on average 1.021505376344086) internal successors, (95), 93 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:30:41,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:30:41,206 INFO L93 Difference]: Finished difference Result 1518 states and 3589 transitions. [2021-10-13 19:30:41,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2021-10-13 19:30:41,207 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 1.021505376344086) internal successors, (95), 93 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-10-13 19:30:41,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:30:41,209 INFO L225 Difference]: With dead ends: 1518 [2021-10-13 19:30:41,209 INFO L226 Difference]: Without dead ends: 1144 [2021-10-13 19:30:41,209 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3620.7ms TimeCoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2021-10-13 19:30:41,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1144 states. [2021-10-13 19:30:41,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1144 to 780. [2021-10-13 19:30:41,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 777 states have (on average 2.3732303732303732) internal successors, (1844), 779 states have internal predecessors, (1844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:30:41,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 1844 transitions. [2021-10-13 19:30:41,223 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 1844 transitions. Word has length 95 [2021-10-13 19:30:41,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:30:41,223 INFO L470 AbstractCegarLoop]: Abstraction has 780 states and 1844 transitions. [2021-10-13 19:30:41,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 1.021505376344086) internal successors, (95), 93 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:30:41,224 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 1844 transitions. [2021-10-13 19:30:41,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-10-13 19:30:41,225 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:30:41,225 INFO L512 BasicCegarLoop]: trace histogram [92, 1, 1, 1, 1] [2021-10-13 19:30:41,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2021-10-13 19:30:41,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2021-10-13 19:30:41,434 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:30:41,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:30:41,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1623941621, now seen corresponding path program 92 times [2021-10-13 19:30:41,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:30:41,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883428317] [2021-10-13 19:30:41,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:30:41,436 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:30:41,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:30:45,350 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:30:45,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:30:45,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883428317] [2021-10-13 19:30:45,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883428317] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:30:45,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711486518] [2021-10-13 19:30:45,351 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:30:45,351 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:30:45,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:30:45,352 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:30:45,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2021-10-13 19:30:46,833 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:30:46,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:30:46,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 880 conjuncts, 95 conjunts are in the unsatisfiable core [2021-10-13 19:30:46,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:30:47,074 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:30:47,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711486518] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:30:47,074 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:30:47,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 93 [2021-10-13 19:30:47,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785337227] [2021-10-13 19:30:47,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2021-10-13 19:30:47,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:30:47,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2021-10-13 19:30:47,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2021-10-13 19:30:47,077 INFO L87 Difference]: Start difference. First operand 780 states and 1844 transitions. Second operand has 95 states, 94 states have (on average 1.0212765957446808) internal successors, (96), 94 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:30:50,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:30:50,135 INFO L93 Difference]: Finished difference Result 1534 states and 3627 transitions. [2021-10-13 19:30:50,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-10-13 19:30:50,135 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 94 states have (on average 1.0212765957446808) internal successors, (96), 94 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-10-13 19:30:50,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:30:50,137 INFO L225 Difference]: With dead ends: 1534 [2021-10-13 19:30:50,137 INFO L226 Difference]: Without dead ends: 1156 [2021-10-13 19:30:50,138 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3692.9ms TimeCoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2021-10-13 19:30:50,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2021-10-13 19:30:50,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 788. [2021-10-13 19:30:50,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 785 states have (on average 2.3732484076433122) internal successors, (1863), 787 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:30:50,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 1863 transitions. [2021-10-13 19:30:50,152 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 1863 transitions. Word has length 96 [2021-10-13 19:30:50,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:30:50,153 INFO L470 AbstractCegarLoop]: Abstraction has 788 states and 1863 transitions. [2021-10-13 19:30:50,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 94 states have (on average 1.0212765957446808) internal successors, (96), 94 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:30:50,153 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 1863 transitions. [2021-10-13 19:30:50,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-10-13 19:30:50,154 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:30:50,154 INFO L512 BasicCegarLoop]: trace histogram [93, 1, 1, 1, 1] [2021-10-13 19:30:50,183 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Ended with exit code 0 [2021-10-13 19:30:50,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,96 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:30:50,355 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:30:50,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:30:50,356 INFO L82 PathProgramCache]: Analyzing trace with hash -1197415868, now seen corresponding path program 93 times [2021-10-13 19:30:50,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:30:50,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059032369] [2021-10-13 19:30:50,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:30:50,357 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:30:50,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:30:54,310 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:30:54,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:30:54,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059032369] [2021-10-13 19:30:54,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059032369] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:30:54,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432920627] [2021-10-13 19:30:54,311 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:30:54,312 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:30:54,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:30:54,312 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:30:54,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2021-10-13 19:30:55,835 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2021-10-13 19:30:55,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:30:55,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 889 conjuncts, 96 conjunts are in the unsatisfiable core [2021-10-13 19:30:55,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:30:56,144 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:30:56,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432920627] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:30:56,144 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:30:56,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 94 [2021-10-13 19:30:56,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571868418] [2021-10-13 19:30:56,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-10-13 19:30:56,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:30:56,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-10-13 19:30:56,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2021-10-13 19:30:56,147 INFO L87 Difference]: Start difference. First operand 788 states and 1863 transitions. Second operand has 96 states, 95 states have (on average 1.0210526315789474) internal successors, (97), 95 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:30:59,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:30:59,075 INFO L93 Difference]: Finished difference Result 1550 states and 3665 transitions. [2021-10-13 19:30:59,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-10-13 19:30:59,075 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 1.0210526315789474) internal successors, (97), 95 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-10-13 19:30:59,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:30:59,078 INFO L225 Difference]: With dead ends: 1550 [2021-10-13 19:30:59,078 INFO L226 Difference]: Without dead ends: 1168 [2021-10-13 19:30:59,078 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3736.9ms TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2021-10-13 19:30:59,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2021-10-13 19:30:59,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 796. [2021-10-13 19:30:59,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 793 states have (on average 2.373266078184111) internal successors, (1882), 795 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) [2021-10-13 19:30:59,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1882 transitions. [2021-10-13 19:30:59,091 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1882 transitions. Word has length 97 [2021-10-13 19:30:59,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:30:59,091 INFO L470 AbstractCegarLoop]: Abstraction has 796 states and 1882 transitions. [2021-10-13 19:30:59,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 1.0210526315789474) internal successors, (97), 95 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:30:59,091 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1882 transitions. [2021-10-13 19:30:59,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-10-13 19:30:59,093 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:30:59,093 INFO L512 BasicCegarLoop]: trace histogram [94, 1, 1, 1, 1] [2021-10-13 19:30:59,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Forceful destruction successful, exit code 0 [2021-10-13 19:30:59,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2021-10-13 19:30:59,307 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:30:59,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:30:59,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1534815189, now seen corresponding path program 94 times [2021-10-13 19:30:59,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:30:59,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737000882] [2021-10-13 19:30:59,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:30:59,309 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:30:59,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:31:03,410 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:31:03,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:31:03,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737000882] [2021-10-13 19:31:03,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737000882] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:31:03,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788159097] [2021-10-13 19:31:03,411 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:31:03,411 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:31:03,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:31:03,412 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:31:03,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2021-10-13 19:31:04,994 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:31:04,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:31:05,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 898 conjuncts, 97 conjunts are in the unsatisfiable core [2021-10-13 19:31:05,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:31:05,235 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:31:05,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788159097] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:31:05,235 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:31:05,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 95 [2021-10-13 19:31:05,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414218648] [2021-10-13 19:31:05,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2021-10-13 19:31:05,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:31:05,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2021-10-13 19:31:05,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2021-10-13 19:31:05,237 INFO L87 Difference]: Start difference. First operand 796 states and 1882 transitions. Second operand has 97 states, 96 states have (on average 1.0208333333333333) internal successors, (98), 96 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:31:08,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:31:08,015 INFO L93 Difference]: Finished difference Result 1566 states and 3703 transitions. [2021-10-13 19:31:08,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2021-10-13 19:31:08,016 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 96 states have (on average 1.0208333333333333) internal successors, (98), 96 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-10-13 19:31:08,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:31:08,018 INFO L225 Difference]: With dead ends: 1566 [2021-10-13 19:31:08,018 INFO L226 Difference]: Without dead ends: 1180 [2021-10-13 19:31:08,018 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3809.2ms TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2021-10-13 19:31:08,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2021-10-13 19:31:08,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 804. [2021-10-13 19:31:08,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 804 states, 801 states have (on average 2.3732833957553057) internal successors, (1901), 803 states have internal predecessors, (1901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:31:08,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 1901 transitions. [2021-10-13 19:31:08,034 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 1901 transitions. Word has length 98 [2021-10-13 19:31:08,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:31:08,035 INFO L470 AbstractCegarLoop]: Abstraction has 804 states and 1901 transitions. [2021-10-13 19:31:08,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 96 states have (on average 1.0208333333333333) internal successors, (98), 96 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:31:08,035 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 1901 transitions. [2021-10-13 19:31:08,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-10-13 19:31:08,037 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:31:08,037 INFO L512 BasicCegarLoop]: trace histogram [95, 1, 1, 1, 1] [2021-10-13 19:31:08,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Forceful destruction successful, exit code 0 [2021-10-13 19:31:08,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101,98 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:31:08,252 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:31:08,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:31:08,252 INFO L82 PathProgramCache]: Analyzing trace with hash 334632036, now seen corresponding path program 95 times [2021-10-13 19:31:08,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:31:08,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698830435] [2021-10-13 19:31:08,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:31:08,253 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:31:08,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:31:12,414 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:31:12,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:31:12,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698830435] [2021-10-13 19:31:12,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698830435] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:31:12,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178910917] [2021-10-13 19:31:12,415 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:31:12,415 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:31:12,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:31:12,416 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:31:12,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2021-10-13 19:31:14,067 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2021-10-13 19:31:14,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:31:14,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 907 conjuncts, 98 conjunts are in the unsatisfiable core [2021-10-13 19:31:14,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:31:14,334 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:31:14,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178910917] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:31:14,334 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:31:14,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 96 [2021-10-13 19:31:14,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3248467] [2021-10-13 19:31:14,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2021-10-13 19:31:14,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:31:14,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2021-10-13 19:31:14,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2021-10-13 19:31:14,337 INFO L87 Difference]: Start difference. First operand 804 states and 1901 transitions. Second operand has 98 states, 97 states have (on average 1.0206185567010309) internal successors, (99), 97 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:31:17,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:31:17,415 INFO L93 Difference]: Finished difference Result 1582 states and 3741 transitions. [2021-10-13 19:31:17,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-10-13 19:31:17,415 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 97 states have (on average 1.0206185567010309) internal successors, (99), 97 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-10-13 19:31:17,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:31:17,418 INFO L225 Difference]: With dead ends: 1582 [2021-10-13 19:31:17,418 INFO L226 Difference]: Without dead ends: 1192 [2021-10-13 19:31:17,418 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3944.4ms TimeCoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2021-10-13 19:31:17,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2021-10-13 19:31:17,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 812. [2021-10-13 19:31:17,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 809 states have (on average 2.373300370828183) internal successors, (1920), 811 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:31:17,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1920 transitions. [2021-10-13 19:31:17,430 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1920 transitions. Word has length 99 [2021-10-13 19:31:17,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:31:17,430 INFO L470 AbstractCegarLoop]: Abstraction has 812 states and 1920 transitions. [2021-10-13 19:31:17,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 97 states have (on average 1.0206185567010309) internal successors, (99), 97 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:31:17,430 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1920 transitions. [2021-10-13 19:31:17,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-13 19:31:17,431 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:31:17,431 INFO L512 BasicCegarLoop]: trace histogram [96, 1, 1, 1, 1] [2021-10-13 19:31:17,462 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Ended with exit code 0 [2021-10-13 19:31:17,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2021-10-13 19:31:17,632 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:31:17,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:31:17,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1783659957, now seen corresponding path program 96 times [2021-10-13 19:31:17,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:31:17,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341260305] [2021-10-13 19:31:17,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:31:17,634 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:31:17,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:31:21,845 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:31:21,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:31:21,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341260305] [2021-10-13 19:31:21,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341260305] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:31:21,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460208609] [2021-10-13 19:31:21,846 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:31:21,846 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:31:21,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:31:21,848 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:31:21,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2021-10-13 19:31:23,562 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2021-10-13 19:31:23,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:31:23,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 916 conjuncts, 99 conjunts are in the unsatisfiable core [2021-10-13 19:31:23,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:31:23,822 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:31:23,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460208609] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:31:23,822 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:31:23,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 97 [2021-10-13 19:31:23,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238931487] [2021-10-13 19:31:23,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2021-10-13 19:31:23,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:31:23,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2021-10-13 19:31:23,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2021-10-13 19:31:23,825 INFO L87 Difference]: Start difference. First operand 812 states and 1920 transitions. Second operand has 99 states, 98 states have (on average 1.0204081632653061) internal successors, (100), 98 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:31:27,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:31:27,058 INFO L93 Difference]: Finished difference Result 1598 states and 3779 transitions. [2021-10-13 19:31:27,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-10-13 19:31:27,058 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 98 states have (on average 1.0204081632653061) internal successors, (100), 98 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-10-13 19:31:27,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:31:27,060 INFO L225 Difference]: With dead ends: 1598 [2021-10-13 19:31:27,060 INFO L226 Difference]: Without dead ends: 1204 [2021-10-13 19:31:27,061 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3996.4ms TimeCoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2021-10-13 19:31:27,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1204 states. [2021-10-13 19:31:27,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1204 to 820. [2021-10-13 19:31:27,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 817 states have (on average 2.3733170134638923) internal successors, (1939), 819 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:31:27,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1939 transitions. [2021-10-13 19:31:27,073 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1939 transitions. Word has length 100 [2021-10-13 19:31:27,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:31:27,073 INFO L470 AbstractCegarLoop]: Abstraction has 820 states and 1939 transitions. [2021-10-13 19:31:27,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 98 states have (on average 1.0204081632653061) internal successors, (100), 98 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:31:27,074 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1939 transitions. [2021-10-13 19:31:27,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-10-13 19:31:27,080 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:31:27,080 INFO L512 BasicCegarLoop]: trace histogram [97, 1, 1, 1, 1] [2021-10-13 19:31:27,111 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Ended with exit code 0 [2021-10-13 19:31:27,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103,100 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:31:27,294 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:31:27,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:31:27,295 INFO L82 PathProgramCache]: Analyzing trace with hash -541114748, now seen corresponding path program 97 times [2021-10-13 19:31:27,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:31:27,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416767201] [2021-10-13 19:31:27,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:31:27,296 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:31:27,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:31:31,536 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:31:31,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:31:31,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416767201] [2021-10-13 19:31:31,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416767201] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:31:31,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192256054] [2021-10-13 19:31:31,537 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:31:31,537 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:31:31,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:31:31,538 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:31:31,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2021-10-13 19:31:33,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:31:33,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 925 conjuncts, 100 conjunts are in the unsatisfiable core [2021-10-13 19:31:33,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:31:33,425 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:31:33,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192256054] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:31:33,426 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:31:33,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 98 [2021-10-13 19:31:33,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098655266] [2021-10-13 19:31:33,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2021-10-13 19:31:33,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:31:33,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2021-10-13 19:31:33,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2021-10-13 19:31:33,430 INFO L87 Difference]: Start difference. First operand 820 states and 1939 transitions. Second operand has 100 states, 99 states have (on average 1.02020202020202) internal successors, (101), 99 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:31:37,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:31:37,516 INFO L93 Difference]: Finished difference Result 1614 states and 3817 transitions. [2021-10-13 19:31:37,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-10-13 19:31:37,516 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 99 states have (on average 1.02020202020202) internal successors, (101), 99 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-10-13 19:31:37,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:31:37,519 INFO L225 Difference]: With dead ends: 1614 [2021-10-13 19:31:37,519 INFO L226 Difference]: Without dead ends: 1216 [2021-10-13 19:31:37,519 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4018.0ms TimeCoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2021-10-13 19:31:37,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2021-10-13 19:31:37,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 828. [2021-10-13 19:31:37,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 825 states have (on average 2.3733333333333335) internal successors, (1958), 827 states have internal predecessors, (1958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:31:37,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 1958 transitions. [2021-10-13 19:31:37,533 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1958 transitions. Word has length 101 [2021-10-13 19:31:37,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:31:37,533 INFO L470 AbstractCegarLoop]: Abstraction has 828 states and 1958 transitions. [2021-10-13 19:31:37,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 99 states have (on average 1.02020202020202) internal successors, (101), 99 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:31:37,534 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1958 transitions. [2021-10-13 19:31:37,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-10-13 19:31:37,535 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:31:37,535 INFO L512 BasicCegarLoop]: trace histogram [98, 1, 1, 1, 1] [2021-10-13 19:31:37,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Forceful destruction successful, exit code 0 [2021-10-13 19:31:37,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104 [2021-10-13 19:31:37,736 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:31:37,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:31:37,736 INFO L82 PathProgramCache]: Analyzing trace with hash 405313429, now seen corresponding path program 98 times [2021-10-13 19:31:37,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:31:37,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536705294] [2021-10-13 19:31:37,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:31:37,737 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:31:37,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:31:42,123 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:31:42,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:31:42,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536705294] [2021-10-13 19:31:42,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536705294] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:31:42,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717535857] [2021-10-13 19:31:42,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:31:42,124 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:31:42,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:31:42,125 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:31:42,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2021-10-13 19:31:43,797 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:31:43,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:31:43,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 934 conjuncts, 101 conjunts are in the unsatisfiable core [2021-10-13 19:31:43,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:31:44,089 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:31:44,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717535857] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:31:44,089 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:31:44,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 99 [2021-10-13 19:31:44,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463525143] [2021-10-13 19:31:44,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2021-10-13 19:31:44,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:31:44,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2021-10-13 19:31:44,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2021-10-13 19:31:44,093 INFO L87 Difference]: Start difference. First operand 828 states and 1958 transitions. Second operand has 101 states, 100 states have (on average 1.02) internal successors, (102), 100 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:31:47,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:31:47,594 INFO L93 Difference]: Finished difference Result 1630 states and 3855 transitions. [2021-10-13 19:31:47,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-10-13 19:31:47,594 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 100 states have (on average 1.02) internal successors, (102), 100 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2021-10-13 19:31:47,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:31:47,597 INFO L225 Difference]: With dead ends: 1630 [2021-10-13 19:31:47,597 INFO L226 Difference]: Without dead ends: 1228 [2021-10-13 19:31:47,598 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4144.7ms TimeCoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2021-10-13 19:31:47,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1228 states. [2021-10-13 19:31:47,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1228 to 836. [2021-10-13 19:31:47,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 833 states have (on average 2.3733493397358942) internal successors, (1977), 835 states have internal predecessors, (1977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:31:47,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1977 transitions. [2021-10-13 19:31:47,616 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1977 transitions. Word has length 102 [2021-10-13 19:31:47,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:31:47,616 INFO L470 AbstractCegarLoop]: Abstraction has 836 states and 1977 transitions. [2021-10-13 19:31:47,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 100 states have (on average 1.02) internal successors, (102), 100 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:31:47,617 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1977 transitions. [2021-10-13 19:31:47,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-10-13 19:31:47,618 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:31:47,618 INFO L512 BasicCegarLoop]: trace histogram [99, 1, 1, 1, 1] [2021-10-13 19:31:47,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Forceful destruction successful, exit code 0 [2021-10-13 19:31:47,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,102 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:31:47,831 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:31:47,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:31:47,832 INFO L82 PathProgramCache]: Analyzing trace with hash -320184156, now seen corresponding path program 99 times [2021-10-13 19:31:47,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:31:47,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998291228] [2021-10-13 19:31:47,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:31:47,833 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:31:47,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:31:52,371 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:31:52,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:31:52,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998291228] [2021-10-13 19:31:52,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998291228] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:31:52,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812574234] [2021-10-13 19:31:52,372 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:31:52,372 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:31:52,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:31:52,374 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:31:52,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2021-10-13 19:31:54,220 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 51 check-sat command(s) [2021-10-13 19:31:54,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:31:54,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 943 conjuncts, 102 conjunts are in the unsatisfiable core [2021-10-13 19:31:54,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:31:54,484 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:31:54,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812574234] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:31:54,485 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:31:54,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 100 [2021-10-13 19:31:54,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351416159] [2021-10-13 19:31:54,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2021-10-13 19:31:54,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:31:54,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2021-10-13 19:31:54,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2021-10-13 19:31:54,488 INFO L87 Difference]: Start difference. First operand 836 states and 1977 transitions. Second operand has 102 states, 101 states have (on average 1.0198019801980198) internal successors, (103), 101 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:31:58,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:31:58,103 INFO L93 Difference]: Finished difference Result 1646 states and 3893 transitions. [2021-10-13 19:31:58,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-10-13 19:31:58,104 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 101 states have (on average 1.0198019801980198) internal successors, (103), 101 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-10-13 19:31:58,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:31:58,106 INFO L225 Difference]: With dead ends: 1646 [2021-10-13 19:31:58,106 INFO L226 Difference]: Without dead ends: 1240 [2021-10-13 19:31:58,107 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4300.9ms TimeCoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2021-10-13 19:31:58,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2021-10-13 19:31:58,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 844. [2021-10-13 19:31:58,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 841 states have (on average 2.3733650416171224) internal successors, (1996), 843 states have internal predecessors, (1996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:31:58,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 1996 transitions. [2021-10-13 19:31:58,118 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 1996 transitions. Word has length 103 [2021-10-13 19:31:58,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:31:58,119 INFO L470 AbstractCegarLoop]: Abstraction has 844 states and 1996 transitions. [2021-10-13 19:31:58,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 101 states have (on average 1.0198019801980198) internal successors, (103), 101 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:31:58,119 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 1996 transitions. [2021-10-13 19:31:58,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-10-13 19:31:58,120 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:31:58,120 INFO L512 BasicCegarLoop]: trace histogram [100, 1, 1, 1, 1] [2021-10-13 19:31:58,150 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Ended with exit code 0 [2021-10-13 19:31:58,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2021-10-13 19:31:58,321 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:31:58,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:31:58,322 INFO L82 PathProgramCache]: Analyzing trace with hash -1335772811, now seen corresponding path program 100 times [2021-10-13 19:31:58,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:31:58,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714576699] [2021-10-13 19:31:58,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:31:58,323 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:31:58,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:32:02,838 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:32:02,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:32:02,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714576699] [2021-10-13 19:32:02,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714576699] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:32:02,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127001005] [2021-10-13 19:32:02,839 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:32:02,839 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:32:02,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:32:02,840 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:32:02,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2021-10-13 19:32:04,553 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:32:04,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:32:04,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 952 conjuncts, 103 conjunts are in the unsatisfiable core [2021-10-13 19:32:04,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:32:04,813 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:32:04,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127001005] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:32:04,814 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:32:04,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 101 [2021-10-13 19:32:04,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86526110] [2021-10-13 19:32:04,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2021-10-13 19:32:04,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:32:04,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-10-13 19:32:04,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2021-10-13 19:32:04,817 INFO L87 Difference]: Start difference. First operand 844 states and 1996 transitions. Second operand has 103 states, 102 states have (on average 1.0196078431372548) internal successors, (104), 102 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:32:08,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:32:08,396 INFO L93 Difference]: Finished difference Result 1662 states and 3931 transitions. [2021-10-13 19:32:08,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-10-13 19:32:08,396 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 102 states have (on average 1.0196078431372548) internal successors, (104), 102 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-10-13 19:32:08,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:32:08,399 INFO L225 Difference]: With dead ends: 1662 [2021-10-13 19:32:08,399 INFO L226 Difference]: Without dead ends: 1252 [2021-10-13 19:32:08,399 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4290.7ms TimeCoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2021-10-13 19:32:08,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2021-10-13 19:32:08,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 852. [2021-10-13 19:32:08,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 849 states have (on average 2.3733804475853946) internal successors, (2015), 851 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:32:08,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 2015 transitions. [2021-10-13 19:32:08,411 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 2015 transitions. Word has length 104 [2021-10-13 19:32:08,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:32:08,412 INFO L470 AbstractCegarLoop]: Abstraction has 852 states and 2015 transitions. [2021-10-13 19:32:08,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 102 states have (on average 1.0196078431372548) internal successors, (104), 102 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:32:08,412 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 2015 transitions. [2021-10-13 19:32:08,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-13 19:32:08,413 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:32:08,413 INFO L512 BasicCegarLoop]: trace histogram [101, 1, 1, 1, 1] [2021-10-13 19:32:08,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Forceful destruction successful, exit code 0 [2021-10-13 19:32:08,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107,104 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:32:08,614 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:32:08,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:32:08,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1540717252, now seen corresponding path program 101 times [2021-10-13 19:32:08,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:32:08,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28455734] [2021-10-13 19:32:08,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:32:08,616 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:32:08,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:32:13,284 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:32:13,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:32:13,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28455734] [2021-10-13 19:32:13,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28455734] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:32:13,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486094244] [2021-10-13 19:32:13,285 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:32:13,285 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:32:13,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:32:13,286 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:32:13,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2021-10-13 19:32:15,202 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 52 check-sat command(s) [2021-10-13 19:32:15,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:32:15,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 961 conjuncts, 104 conjunts are in the unsatisfiable core [2021-10-13 19:32:15,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:32:15,481 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:32:15,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486094244] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:32:15,482 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:32:15,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 102 [2021-10-13 19:32:15,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679521872] [2021-10-13 19:32:15,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2021-10-13 19:32:15,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:32:15,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2021-10-13 19:32:15,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2021-10-13 19:32:15,485 INFO L87 Difference]: Start difference. First operand 852 states and 2015 transitions. Second operand has 104 states, 103 states have (on average 1.0194174757281553) internal successors, (105), 103 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:32:19,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:32:19,275 INFO L93 Difference]: Finished difference Result 1678 states and 3969 transitions. [2021-10-13 19:32:19,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-10-13 19:32:19,276 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 103 states have (on average 1.0194174757281553) internal successors, (105), 103 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-10-13 19:32:19,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:32:19,278 INFO L225 Difference]: With dead ends: 1678 [2021-10-13 19:32:19,278 INFO L226 Difference]: Without dead ends: 1264 [2021-10-13 19:32:19,279 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4424.9ms TimeCoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2021-10-13 19:32:19,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1264 states. [2021-10-13 19:32:19,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1264 to 860. [2021-10-13 19:32:19,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 860 states, 857 states have (on average 2.3733955659276544) internal successors, (2034), 859 states have internal predecessors, (2034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:32:19,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 2034 transitions. [2021-10-13 19:32:19,293 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 2034 transitions. Word has length 105 [2021-10-13 19:32:19,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:32:19,293 INFO L470 AbstractCegarLoop]: Abstraction has 860 states and 2034 transitions. [2021-10-13 19:32:19,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 103 states have (on average 1.0194174757281553) internal successors, (105), 103 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:32:19,293 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 2034 transitions. [2021-10-13 19:32:19,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-10-13 19:32:19,295 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:32:19,295 INFO L512 BasicCegarLoop]: trace histogram [102, 1, 1, 1, 1] [2021-10-13 19:32:19,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Forceful destruction successful, exit code 0 [2021-10-13 19:32:19,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,105 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:32:19,496 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:32:19,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:32:19,496 INFO L82 PathProgramCache]: Analyzing trace with hash 517595989, now seen corresponding path program 102 times [2021-10-13 19:32:19,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:32:19,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339895911] [2021-10-13 19:32:19,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:32:19,497 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:32:19,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:32:24,219 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:32:24,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:32:24,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339895911] [2021-10-13 19:32:24,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339895911] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:32:24,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809225666] [2021-10-13 19:32:24,220 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:32:24,220 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:32:24,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:32:24,221 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:32:24,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2021-10-13 19:32:26,129 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 52 check-sat command(s) [2021-10-13 19:32:26,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:32:26,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 970 conjuncts, 105 conjunts are in the unsatisfiable core [2021-10-13 19:32:26,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:32:26,415 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:32:26,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809225666] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:32:26,415 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:32:26,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 103 [2021-10-13 19:32:26,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68439438] [2021-10-13 19:32:26,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2021-10-13 19:32:26,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:32:26,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2021-10-13 19:32:26,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2021-10-13 19:32:26,419 INFO L87 Difference]: Start difference. First operand 860 states and 2034 transitions. Second operand has 105 states, 104 states have (on average 1.0192307692307692) internal successors, (106), 104 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:32:30,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:32:30,325 INFO L93 Difference]: Finished difference Result 1694 states and 4007 transitions. [2021-10-13 19:32:30,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2021-10-13 19:32:30,326 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 104 states have (on average 1.0192307692307692) internal successors, (106), 104 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-10-13 19:32:30,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:32:30,328 INFO L225 Difference]: With dead ends: 1694 [2021-10-13 19:32:30,328 INFO L226 Difference]: Without dead ends: 1276 [2021-10-13 19:32:30,329 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4457.3ms TimeCoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2021-10-13 19:32:30,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1276 states. [2021-10-13 19:32:30,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1276 to 868. [2021-10-13 19:32:30,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 868 states, 865 states have (on average 2.3734104046242774) internal successors, (2053), 867 states have internal predecessors, (2053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:32:30,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 2053 transitions. [2021-10-13 19:32:30,349 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 2053 transitions. Word has length 106 [2021-10-13 19:32:30,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:32:30,349 INFO L470 AbstractCegarLoop]: Abstraction has 868 states and 2053 transitions. [2021-10-13 19:32:30,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 104 states have (on average 1.0192307692307692) internal successors, (106), 104 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:32:30,349 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 2053 transitions. [2021-10-13 19:32:30,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-10-13 19:32:30,351 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:32:30,352 INFO L512 BasicCegarLoop]: trace histogram [103, 1, 1, 1, 1] [2021-10-13 19:32:30,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Forceful destruction successful, exit code 0 [2021-10-13 19:32:30,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,106 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:32:30,567 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:32:30,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:32:30,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1134392092, now seen corresponding path program 103 times [2021-10-13 19:32:30,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:32:30,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805126426] [2021-10-13 19:32:30,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:32:30,568 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:32:30,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:32:35,408 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:32:35,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:32:35,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805126426] [2021-10-13 19:32:35,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805126426] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:32:35,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316746706] [2021-10-13 19:32:35,409 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:32:35,409 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:32:35,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:32:35,410 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:32:35,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2021-10-13 19:32:37,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:32:37,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 979 conjuncts, 106 conjunts are in the unsatisfiable core [2021-10-13 19:32:37,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:32:37,573 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:32:37,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316746706] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:32:37,574 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:32:37,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 104 [2021-10-13 19:32:37,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364957931] [2021-10-13 19:32:37,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2021-10-13 19:32:37,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:32:37,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2021-10-13 19:32:37,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2021-10-13 19:32:37,577 INFO L87 Difference]: Start difference. First operand 868 states and 2053 transitions. Second operand has 106 states, 105 states have (on average 1.019047619047619) internal successors, (107), 105 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:32:41,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:32:41,454 INFO L93 Difference]: Finished difference Result 1710 states and 4045 transitions. [2021-10-13 19:32:41,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2021-10-13 19:32:41,455 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 105 states have (on average 1.019047619047619) internal successors, (107), 105 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2021-10-13 19:32:41,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:32:41,457 INFO L225 Difference]: With dead ends: 1710 [2021-10-13 19:32:41,457 INFO L226 Difference]: Without dead ends: 1288 [2021-10-13 19:32:41,458 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4596.2ms TimeCoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2021-10-13 19:32:41,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2021-10-13 19:32:41,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 876. [2021-10-13 19:32:41,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 873 states have (on average 2.3734249713631157) internal successors, (2072), 875 states have internal predecessors, (2072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:32:41,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 2072 transitions. [2021-10-13 19:32:41,470 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 2072 transitions. Word has length 107 [2021-10-13 19:32:41,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:32:41,471 INFO L470 AbstractCegarLoop]: Abstraction has 876 states and 2072 transitions. [2021-10-13 19:32:41,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 105 states have (on average 1.019047619047619) internal successors, (107), 105 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:32:41,471 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 2072 transitions. [2021-10-13 19:32:41,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-10-13 19:32:41,472 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:32:41,472 INFO L512 BasicCegarLoop]: trace histogram [104, 1, 1, 1, 1] [2021-10-13 19:32:41,502 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Ended with exit code 0 [2021-10-13 19:32:41,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,107 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:32:41,673 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:32:41,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:32:41,674 INFO L82 PathProgramCache]: Analyzing trace with hash -806415051, now seen corresponding path program 104 times [2021-10-13 19:32:41,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:32:41,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091196715] [2021-10-13 19:32:41,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:32:41,675 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:32:41,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:32:46,619 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:32:46,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:32:46,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091196715] [2021-10-13 19:32:46,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091196715] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:32:46,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154499122] [2021-10-13 19:32:46,620 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:32:46,620 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:32:46,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:32:46,622 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:32:46,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2021-10-13 19:32:48,511 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:32:48,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:32:48,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 988 conjuncts, 107 conjunts are in the unsatisfiable core [2021-10-13 19:32:48,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:32:48,789 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:32:48,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154499122] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:32:48,790 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:32:48,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 105 [2021-10-13 19:32:48,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44925211] [2021-10-13 19:32:48,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2021-10-13 19:32:48,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:32:48,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2021-10-13 19:32:48,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2021-10-13 19:32:48,792 INFO L87 Difference]: Start difference. First operand 876 states and 2072 transitions. Second operand has 107 states, 106 states have (on average 1.0188679245283019) internal successors, (108), 106 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:32:53,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:32:53,072 INFO L93 Difference]: Finished difference Result 1726 states and 4083 transitions. [2021-10-13 19:32:53,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2021-10-13 19:32:53,073 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 106 states have (on average 1.0188679245283019) internal successors, (108), 106 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-10-13 19:32:53,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:32:53,075 INFO L225 Difference]: With dead ends: 1726 [2021-10-13 19:32:53,075 INFO L226 Difference]: Without dead ends: 1300 [2021-10-13 19:32:53,076 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4702.5ms TimeCoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2021-10-13 19:32:53,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1300 states. [2021-10-13 19:32:53,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1300 to 884. [2021-10-13 19:32:53,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 884 states, 881 states have (on average 2.3734392735527807) internal successors, (2091), 883 states have internal predecessors, (2091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:32:53,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 2091 transitions. [2021-10-13 19:32:53,089 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 2091 transitions. Word has length 108 [2021-10-13 19:32:53,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:32:53,089 INFO L470 AbstractCegarLoop]: Abstraction has 884 states and 2091 transitions. [2021-10-13 19:32:53,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 106 states have (on average 1.0188679245283019) internal successors, (108), 106 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:32:53,089 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 2091 transitions. [2021-10-13 19:32:53,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-10-13 19:32:53,090 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:32:53,090 INFO L512 BasicCegarLoop]: trace histogram [105, 1, 1, 1, 1] [2021-10-13 19:32:53,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Forceful destruction successful, exit code 0 [2021-10-13 19:32:53,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2021-10-13 19:32:53,291 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:32:53,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:32:53,292 INFO L82 PathProgramCache]: Analyzing trace with hash 770938628, now seen corresponding path program 105 times [2021-10-13 19:32:53,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:32:53,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699535468] [2021-10-13 19:32:53,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:32:53,293 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:32:53,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:32:58,278 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:32:58,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:32:58,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699535468] [2021-10-13 19:32:58,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699535468] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:32:58,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008083004] [2021-10-13 19:32:58,280 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:32:58,280 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:32:58,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:32:58,281 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:32:58,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2021-10-13 19:33:00,184 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2021-10-13 19:33:00,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:33:00,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 997 conjuncts, 108 conjunts are in the unsatisfiable core [2021-10-13 19:33:00,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:33:00,451 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:33:00,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008083004] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:33:00,452 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:33:00,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 106 [2021-10-13 19:33:00,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344806170] [2021-10-13 19:33:00,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2021-10-13 19:33:00,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:33:00,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2021-10-13 19:33:00,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2021-10-13 19:33:00,455 INFO L87 Difference]: Start difference. First operand 884 states and 2091 transitions. Second operand has 108 states, 107 states have (on average 1.0186915887850467) internal successors, (109), 107 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:33:04,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:33:04,750 INFO L93 Difference]: Finished difference Result 1742 states and 4121 transitions. [2021-10-13 19:33:04,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-10-13 19:33:04,751 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 107 states have (on average 1.0186915887850467) internal successors, (109), 107 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-10-13 19:33:04,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:33:04,753 INFO L225 Difference]: With dead ends: 1742 [2021-10-13 19:33:04,753 INFO L226 Difference]: Without dead ends: 1312 [2021-10-13 19:33:04,754 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4735.1ms TimeCoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2021-10-13 19:33:04,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2021-10-13 19:33:04,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 892. [2021-10-13 19:33:04,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 892 states, 889 states have (on average 2.373453318335208) internal successors, (2110), 891 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:33:04,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 2110 transitions. [2021-10-13 19:33:04,767 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 2110 transitions. Word has length 109 [2021-10-13 19:33:04,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:33:04,767 INFO L470 AbstractCegarLoop]: Abstraction has 892 states and 2110 transitions. [2021-10-13 19:33:04,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 107 states have (on average 1.0186915887850467) internal successors, (109), 107 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:33:04,768 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 2110 transitions. [2021-10-13 19:33:04,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-13 19:33:04,769 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:33:04,769 INFO L512 BasicCegarLoop]: trace histogram [106, 1, 1, 1, 1] [2021-10-13 19:33:04,801 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Ended with exit code 0 [2021-10-13 19:33:04,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 109 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2021-10-13 19:33:04,970 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:33:04,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:33:04,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1870704875, now seen corresponding path program 106 times [2021-10-13 19:33:04,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:33:04,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189547730] [2021-10-13 19:33:04,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:33:04,972 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:33:05,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:33:09,829 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 0 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:33:09,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:33:09,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189547730] [2021-10-13 19:33:09,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189547730] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:33:09,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227327043] [2021-10-13 19:33:09,830 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:33:09,831 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:33:09,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:33:09,832 INFO L229 MonitoredProcess]: Starting monitored process 110 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:33:09,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2021-10-13 19:33:11,705 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:33:11,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:33:11,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 1006 conjuncts, 109 conjunts are in the unsatisfiable core [2021-10-13 19:33:11,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:33:11,993 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 0 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:33:11,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227327043] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:33:11,994 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:33:11,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 107 [2021-10-13 19:33:11,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899596231] [2021-10-13 19:33:11,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2021-10-13 19:33:11,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:33:11,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2021-10-13 19:33:11,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2021-10-13 19:33:11,997 INFO L87 Difference]: Start difference. First operand 892 states and 2110 transitions. Second operand has 109 states, 108 states have (on average 1.0185185185185186) internal successors, (110), 108 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:33:16,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:33:16,171 INFO L93 Difference]: Finished difference Result 1758 states and 4159 transitions. [2021-10-13 19:33:16,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2021-10-13 19:33:16,171 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 108 states have (on average 1.0185185185185186) internal successors, (110), 108 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-10-13 19:33:16,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:33:16,174 INFO L225 Difference]: With dead ends: 1758 [2021-10-13 19:33:16,174 INFO L226 Difference]: Without dead ends: 1324 [2021-10-13 19:33:16,174 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4625.4ms TimeCoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2021-10-13 19:33:16,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1324 states. [2021-10-13 19:33:16,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1324 to 900. [2021-10-13 19:33:16,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 900 states, 897 states have (on average 2.3734671125975475) internal successors, (2129), 899 states have internal predecessors, (2129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:33:16,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 2129 transitions. [2021-10-13 19:33:16,186 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 2129 transitions. Word has length 110 [2021-10-13 19:33:16,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:33:16,187 INFO L470 AbstractCegarLoop]: Abstraction has 900 states and 2129 transitions. [2021-10-13 19:33:16,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 108 states have (on average 1.0185185185185186) internal successors, (110), 108 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:33:16,191 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 2129 transitions. [2021-10-13 19:33:16,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-10-13 19:33:16,192 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:33:16,192 INFO L512 BasicCegarLoop]: trace histogram [107, 1, 1, 1, 1] [2021-10-13 19:33:16,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Forceful destruction successful, exit code 0 [2021-10-13 19:33:16,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2021-10-13 19:33:16,395 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:33:16,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:33:16,396 INFO L82 PathProgramCache]: Analyzing trace with hash 2137692452, now seen corresponding path program 107 times [2021-10-13 19:33:16,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:33:16,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236332692] [2021-10-13 19:33:16,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:33:16,397 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:33:16,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:33:21,371 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:33:21,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:33:21,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236332692] [2021-10-13 19:33:21,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236332692] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:33:21,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451937146] [2021-10-13 19:33:21,372 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:33:21,372 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:33:21,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:33:21,373 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:33:21,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2021-10-13 19:33:23,343 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 55 check-sat command(s) [2021-10-13 19:33:23,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:33:23,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 1015 conjuncts, 110 conjunts are in the unsatisfiable core [2021-10-13 19:33:23,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:33:23,621 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:33:23,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451937146] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:33:23,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:33:23,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 108 [2021-10-13 19:33:23,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569237609] [2021-10-13 19:33:23,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2021-10-13 19:33:23,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:33:23,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2021-10-13 19:33:23,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2021-10-13 19:33:23,625 INFO L87 Difference]: Start difference. First operand 900 states and 2129 transitions. Second operand has 110 states, 109 states have (on average 1.018348623853211) internal successors, (111), 109 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:33:28,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:33:28,110 INFO L93 Difference]: Finished difference Result 1774 states and 4197 transitions. [2021-10-13 19:33:28,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2021-10-13 19:33:28,111 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 109 states have (on average 1.018348623853211) internal successors, (111), 109 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2021-10-13 19:33:28,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:33:28,113 INFO L225 Difference]: With dead ends: 1774 [2021-10-13 19:33:28,113 INFO L226 Difference]: Without dead ends: 1336 [2021-10-13 19:33:28,114 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4732.5ms TimeCoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2021-10-13 19:33:28,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1336 states. [2021-10-13 19:33:28,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1336 to 908. [2021-10-13 19:33:28,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 908 states, 905 states have (on average 2.3734806629834253) internal successors, (2148), 907 states have internal predecessors, (2148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:33:28,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 2148 transitions. [2021-10-13 19:33:28,126 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 2148 transitions. Word has length 111 [2021-10-13 19:33:28,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:33:28,126 INFO L470 AbstractCegarLoop]: Abstraction has 908 states and 2148 transitions. [2021-10-13 19:33:28,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 109 states have (on average 1.018348623853211) internal successors, (111), 109 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:33:28,126 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 2148 transitions. [2021-10-13 19:33:28,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-10-13 19:33:28,128 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:33:28,128 INFO L512 BasicCegarLoop]: trace histogram [108, 1, 1, 1, 1] [2021-10-13 19:33:28,167 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Ended with exit code 0 [2021-10-13 19:33:28,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2021-10-13 19:33:28,329 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:33:28,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:33:28,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1843958005, now seen corresponding path program 108 times [2021-10-13 19:33:28,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:33:28,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764291436] [2021-10-13 19:33:28,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:33:28,331 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:33:28,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:33:33,398 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 0 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:33:33,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:33:33,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764291436] [2021-10-13 19:33:33,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764291436] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:33:33,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535294009] [2021-10-13 19:33:33,399 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:33:33,399 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:33:33,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:33:33,400 INFO L229 MonitoredProcess]: Starting monitored process 112 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:33:33,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2021-10-13 19:33:35,414 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2021-10-13 19:33:35,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:33:35,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 1024 conjuncts, 111 conjunts are in the unsatisfiable core [2021-10-13 19:33:35,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:33:35,698 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 0 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:33:35,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535294009] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:33:35,698 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:33:35,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 109 [2021-10-13 19:33:35,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808526040] [2021-10-13 19:33:35,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 111 states [2021-10-13 19:33:35,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:33:35,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2021-10-13 19:33:35,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2021-10-13 19:33:35,702 INFO L87 Difference]: Start difference. First operand 908 states and 2148 transitions. Second operand has 111 states, 110 states have (on average 1.018181818181818) internal successors, (112), 110 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:33:40,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:33:40,346 INFO L93 Difference]: Finished difference Result 1790 states and 4235 transitions. [2021-10-13 19:33:40,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2021-10-13 19:33:40,347 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 110 states have (on average 1.018181818181818) internal successors, (112), 110 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-10-13 19:33:40,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:33:40,349 INFO L225 Difference]: With dead ends: 1790 [2021-10-13 19:33:40,349 INFO L226 Difference]: Without dead ends: 1348 [2021-10-13 19:33:40,350 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4830.0ms TimeCoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2021-10-13 19:33:40,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1348 states. [2021-10-13 19:33:40,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1348 to 916. [2021-10-13 19:33:40,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 913 states have (on average 2.3734939759036147) internal successors, (2167), 915 states have internal predecessors, (2167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:33:40,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 2167 transitions. [2021-10-13 19:33:40,363 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 2167 transitions. Word has length 112 [2021-10-13 19:33:40,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:33:40,363 INFO L470 AbstractCegarLoop]: Abstraction has 916 states and 2167 transitions. [2021-10-13 19:33:40,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 111 states, 110 states have (on average 1.018181818181818) internal successors, (112), 110 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:33:40,363 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 2167 transitions. [2021-10-13 19:33:40,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-10-13 19:33:40,365 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:33:40,365 INFO L512 BasicCegarLoop]: trace histogram [109, 1, 1, 1, 1] [2021-10-13 19:33:40,401 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Ended with exit code 0 [2021-10-13 19:33:40,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable115 [2021-10-13 19:33:40,579 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:33:40,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:33:40,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1328124740, now seen corresponding path program 109 times [2021-10-13 19:33:40,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:33:40,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107309098] [2021-10-13 19:33:40,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:33:40,580 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:33:40,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:33:45,957 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:33:45,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:33:45,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107309098] [2021-10-13 19:33:45,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107309098] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:33:45,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231606909] [2021-10-13 19:33:45,958 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:33:45,958 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:33:45,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:33:45,959 INFO L229 MonitoredProcess]: Starting monitored process 113 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:33:45,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2021-10-13 19:33:47,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:33:47,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 1033 conjuncts, 112 conjunts are in the unsatisfiable core [2021-10-13 19:33:47,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:33:48,265 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:33:48,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231606909] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:33:48,266 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:33:48,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110] total 110 [2021-10-13 19:33:48,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362452018] [2021-10-13 19:33:48,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2021-10-13 19:33:48,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:33:48,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2021-10-13 19:33:48,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2021-10-13 19:33:48,269 INFO L87 Difference]: Start difference. First operand 916 states and 2167 transitions. Second operand has 112 states, 111 states have (on average 1.018018018018018) internal successors, (113), 111 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:33:52,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:33:52,879 INFO L93 Difference]: Finished difference Result 1806 states and 4273 transitions. [2021-10-13 19:33:52,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2021-10-13 19:33:52,880 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 111 states have (on average 1.018018018018018) internal successors, (113), 111 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2021-10-13 19:33:52,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:33:52,896 INFO L225 Difference]: With dead ends: 1806 [2021-10-13 19:33:52,896 INFO L226 Difference]: Without dead ends: 1360 [2021-10-13 19:33:52,897 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5127.2ms TimeCoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2021-10-13 19:33:52,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2021-10-13 19:33:52,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 924. [2021-10-13 19:33:52,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 924 states, 921 states have (on average 2.3735070575461457) internal successors, (2186), 923 states have internal predecessors, (2186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:33:52,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 2186 transitions. [2021-10-13 19:33:52,909 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 2186 transitions. Word has length 113 [2021-10-13 19:33:52,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:33:52,910 INFO L470 AbstractCegarLoop]: Abstraction has 924 states and 2186 transitions. [2021-10-13 19:33:52,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 111 states have (on average 1.018018018018018) internal successors, (113), 111 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:33:52,910 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 2186 transitions. [2021-10-13 19:33:52,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-10-13 19:33:52,911 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:33:52,911 INFO L512 BasicCegarLoop]: trace histogram [110, 1, 1, 1, 1] [2021-10-13 19:33:52,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Forceful destruction successful, exit code 0 [2021-10-13 19:33:53,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116 [2021-10-13 19:33:53,112 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:33:53,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:33:53,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1777804587, now seen corresponding path program 110 times [2021-10-13 19:33:53,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:33:53,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957380714] [2021-10-13 19:33:53,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:33:53,114 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:33:53,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:33:58,515 INFO L134 CoverageAnalysis]: Checked inductivity of 6105 backedges. 0 proven. 6105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:33:58,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:33:58,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957380714] [2021-10-13 19:33:58,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957380714] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:33:58,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262886403] [2021-10-13 19:33:58,516 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:33:58,516 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:33:58,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:33:58,517 INFO L229 MonitoredProcess]: Starting monitored process 114 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:33:58,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2021-10-13 19:34:00,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:34:00,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:34:00,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 1042 conjuncts, 113 conjunts are in the unsatisfiable core [2021-10-13 19:34:00,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:34:00,847 INFO L134 CoverageAnalysis]: Checked inductivity of 6105 backedges. 0 proven. 6105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:34:00,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262886403] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:34:00,848 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:34:00,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 111] total 111 [2021-10-13 19:34:00,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045055102] [2021-10-13 19:34:00,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2021-10-13 19:34:00,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:34:00,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2021-10-13 19:34:00,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2021-10-13 19:34:00,905 INFO L87 Difference]: Start difference. First operand 924 states and 2186 transitions. Second operand has 113 states, 112 states have (on average 1.0178571428571428) internal successors, (114), 112 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:34:06,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:34:06,024 INFO L93 Difference]: Finished difference Result 1822 states and 4311 transitions. [2021-10-13 19:34:06,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2021-10-13 19:34:06,024 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 112 states have (on average 1.0178571428571428) internal successors, (114), 112 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-10-13 19:34:06,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:34:06,027 INFO L225 Difference]: With dead ends: 1822 [2021-10-13 19:34:06,027 INFO L226 Difference]: Without dead ends: 1372 [2021-10-13 19:34:06,028 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5157.6ms TimeCoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2021-10-13 19:34:06,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1372 states. [2021-10-13 19:34:06,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1372 to 932. [2021-10-13 19:34:06,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 929 states have (on average 2.373519913885899) internal successors, (2205), 931 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:34:06,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 2205 transitions. [2021-10-13 19:34:06,042 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 2205 transitions. Word has length 114 [2021-10-13 19:34:06,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:34:06,042 INFO L470 AbstractCegarLoop]: Abstraction has 932 states and 2205 transitions. [2021-10-13 19:34:06,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 112 states have (on average 1.0178571428571428) internal successors, (114), 112 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:34:06,043 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 2205 transitions. [2021-10-13 19:34:06,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-13 19:34:06,044 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:34:06,044 INFO L512 BasicCegarLoop]: trace histogram [111, 1, 1, 1, 1] [2021-10-13 19:34:06,077 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Ended with exit code 0 [2021-10-13 19:34:06,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117,114 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:34:06,245 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:34:06,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:34:06,246 INFO L82 PathProgramCache]: Analyzing trace with hash 722634084, now seen corresponding path program 111 times [2021-10-13 19:34:06,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:34:06,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714059268] [2021-10-13 19:34:06,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:34:06,247 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:34:06,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:34:11,732 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:34:11,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:34:11,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714059268] [2021-10-13 19:34:11,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714059268] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:34:11,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909359493] [2021-10-13 19:34:11,734 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:34:11,734 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:34:11,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:34:11,735 INFO L229 MonitoredProcess]: Starting monitored process 115 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:34:11,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2021-10-13 19:34:13,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 57 check-sat command(s) [2021-10-13 19:34:13,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:34:13,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 1051 conjuncts, 114 conjunts are in the unsatisfiable core [2021-10-13 19:34:13,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:34:14,263 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:34:14,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909359493] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:34:14,264 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:34:14,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 112] total 112 [2021-10-13 19:34:14,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598795564] [2021-10-13 19:34:14,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2021-10-13 19:34:14,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:34:14,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2021-10-13 19:34:14,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2021-10-13 19:34:14,267 INFO L87 Difference]: Start difference. First operand 932 states and 2205 transitions. Second operand has 114 states, 113 states have (on average 1.0176991150442478) internal successors, (115), 113 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:34:20,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:34:20,950 INFO L93 Difference]: Finished difference Result 1838 states and 4349 transitions. [2021-10-13 19:34:20,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2021-10-13 19:34:20,951 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 113 states have (on average 1.0176991150442478) internal successors, (115), 113 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-10-13 19:34:20,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:34:20,955 INFO L225 Difference]: With dead ends: 1838 [2021-10-13 19:34:20,955 INFO L226 Difference]: Without dead ends: 1384 [2021-10-13 19:34:20,956 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5233.5ms TimeCoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2021-10-13 19:34:20,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2021-10-13 19:34:20,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 940. [2021-10-13 19:34:20,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 937 states have (on average 2.3735325506937035) internal successors, (2224), 939 states have internal predecessors, (2224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:34:20,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 2224 transitions. [2021-10-13 19:34:20,973 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 2224 transitions. Word has length 115 [2021-10-13 19:34:20,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:34:20,973 INFO L470 AbstractCegarLoop]: Abstraction has 940 states and 2224 transitions. [2021-10-13 19:34:20,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 113 states have (on average 1.0176991150442478) internal successors, (115), 113 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:34:20,973 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 2224 transitions. [2021-10-13 19:34:20,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-10-13 19:34:20,975 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:34:20,975 INFO L512 BasicCegarLoop]: trace histogram [112, 1, 1, 1, 1] [2021-10-13 19:34:21,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Forceful destruction successful, exit code 0 [2021-10-13 19:34:21,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118,115 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:34:21,176 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:34:21,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:34:21,176 INFO L82 PathProgramCache]: Analyzing trace with hash 926821557, now seen corresponding path program 112 times [2021-10-13 19:34:21,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:34:21,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379433123] [2021-10-13 19:34:21,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:34:21,177 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:34:21,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:34:27,053 INFO L134 CoverageAnalysis]: Checked inductivity of 6328 backedges. 0 proven. 6328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:34:27,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:34:27,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379433123] [2021-10-13 19:34:27,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379433123] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:34:27,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608478181] [2021-10-13 19:34:27,054 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:34:27,054 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:34:27,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:34:27,055 INFO L229 MonitoredProcess]: Starting monitored process 116 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:34:27,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2021-10-13 19:34:29,150 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:34:29,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:34:29,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 1060 conjuncts, 115 conjunts are in the unsatisfiable core [2021-10-13 19:34:29,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:34:29,450 INFO L134 CoverageAnalysis]: Checked inductivity of 6328 backedges. 0 proven. 6328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:34:29,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608478181] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:34:29,451 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:34:29,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113] total 113 [2021-10-13 19:34:29,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137701007] [2021-10-13 19:34:29,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 115 states [2021-10-13 19:34:29,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:34:29,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2021-10-13 19:34:29,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2021-10-13 19:34:29,455 INFO L87 Difference]: Start difference. First operand 940 states and 2224 transitions. Second operand has 115 states, 114 states have (on average 1.0175438596491229) internal successors, (116), 114 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:34:34,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:34:34,850 INFO L93 Difference]: Finished difference Result 1854 states and 4387 transitions. [2021-10-13 19:34:34,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2021-10-13 19:34:34,850 INFO L78 Accepts]: Start accepts. Automaton has has 115 states, 114 states have (on average 1.0175438596491229) internal successors, (116), 114 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2021-10-13 19:34:34,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:34:34,853 INFO L225 Difference]: With dead ends: 1854 [2021-10-13 19:34:34,853 INFO L226 Difference]: Without dead ends: 1396 [2021-10-13 19:34:34,854 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5504.7ms TimeCoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2021-10-13 19:34:34,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1396 states. [2021-10-13 19:34:34,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1396 to 948. [2021-10-13 19:34:34,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 945 states have (on average 2.3735449735449734) internal successors, (2243), 947 states have internal predecessors, (2243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:34:34,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 2243 transitions. [2021-10-13 19:34:34,869 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 2243 transitions. Word has length 116 [2021-10-13 19:34:34,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:34:34,869 INFO L470 AbstractCegarLoop]: Abstraction has 948 states and 2243 transitions. [2021-10-13 19:34:34,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 115 states, 114 states have (on average 1.0175438596491229) internal successors, (116), 114 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:34:34,869 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 2243 transitions. [2021-10-13 19:34:34,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-10-13 19:34:34,872 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:34:34,872 INFO L512 BasicCegarLoop]: trace histogram [113, 1, 1, 1, 1] [2021-10-13 19:34:34,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Forceful destruction successful, exit code 0 [2021-10-13 19:34:35,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable119 [2021-10-13 19:34:35,087 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:34:35,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:34:35,088 INFO L82 PathProgramCache]: Analyzing trace with hash -1333301372, now seen corresponding path program 113 times [2021-10-13 19:34:35,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:34:35,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14358163] [2021-10-13 19:34:35,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:34:35,089 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:34:35,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:34:40,870 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:34:40,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:34:40,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14358163] [2021-10-13 19:34:40,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14358163] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:34:40,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81249611] [2021-10-13 19:34:40,871 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:34:40,871 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:34:40,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:34:40,873 INFO L229 MonitoredProcess]: Starting monitored process 117 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:34:40,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2021-10-13 19:34:43,113 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 58 check-sat command(s) [2021-10-13 19:34:43,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:34:43,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 1069 conjuncts, 116 conjunts are in the unsatisfiable core [2021-10-13 19:34:43,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:34:43,410 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:34:43,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81249611] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:34:43,410 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:34:43,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 114] total 114 [2021-10-13 19:34:43,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954624599] [2021-10-13 19:34:43,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2021-10-13 19:34:43,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:34:43,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2021-10-13 19:34:43,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2021-10-13 19:34:43,414 INFO L87 Difference]: Start difference. First operand 948 states and 2243 transitions. Second operand has 116 states, 115 states have (on average 1.017391304347826) internal successors, (117), 115 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:34:49,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:34:49,286 INFO L93 Difference]: Finished difference Result 1870 states and 4425 transitions. [2021-10-13 19:34:49,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2021-10-13 19:34:49,286 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 115 states have (on average 1.017391304347826) internal successors, (117), 115 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2021-10-13 19:34:49,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:34:49,288 INFO L225 Difference]: With dead ends: 1870 [2021-10-13 19:34:49,288 INFO L226 Difference]: Without dead ends: 1408 [2021-10-13 19:34:49,289 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5496.9ms TimeCoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2021-10-13 19:34:49,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1408 states. [2021-10-13 19:34:49,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1408 to 956. [2021-10-13 19:34:49,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 956 states, 953 states have (on average 2.373557187827912) internal successors, (2262), 955 states have internal predecessors, (2262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:34:49,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 2262 transitions. [2021-10-13 19:34:49,302 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 2262 transitions. Word has length 117 [2021-10-13 19:34:49,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:34:49,302 INFO L470 AbstractCegarLoop]: Abstraction has 956 states and 2262 transitions. [2021-10-13 19:34:49,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 115 states have (on average 1.017391304347826) internal successors, (117), 115 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:34:49,303 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 2262 transitions. [2021-10-13 19:34:49,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-10-13 19:34:49,304 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:34:49,304 INFO L512 BasicCegarLoop]: trace histogram [114, 1, 1, 1, 1] [2021-10-13 19:34:49,336 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Ended with exit code 0 [2021-10-13 19:34:49,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,117 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:34:49,505 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:34:49,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:34:49,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1617331861, now seen corresponding path program 114 times [2021-10-13 19:34:49,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:34:49,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234066272] [2021-10-13 19:34:49,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:34:49,507 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:34:49,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:34:55,247 INFO L134 CoverageAnalysis]: Checked inductivity of 6555 backedges. 0 proven. 6555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:34:55,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:34:55,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234066272] [2021-10-13 19:34:55,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234066272] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:34:55,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790277474] [2021-10-13 19:34:55,248 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:34:55,248 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:34:55,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:34:55,249 INFO L229 MonitoredProcess]: Starting monitored process 118 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:34:55,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2021-10-13 19:34:57,494 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 58 check-sat command(s) [2021-10-13 19:34:57,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:34:57,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 1078 conjuncts, 117 conjunts are in the unsatisfiable core [2021-10-13 19:34:57,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:34:57,779 INFO L134 CoverageAnalysis]: Checked inductivity of 6555 backedges. 0 proven. 6555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:34:57,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790277474] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:34:57,779 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:34:57,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 115] total 115 [2021-10-13 19:34:57,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468859176] [2021-10-13 19:34:57,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 117 states [2021-10-13 19:34:57,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:34:57,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2021-10-13 19:34:57,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2021-10-13 19:34:57,782 INFO L87 Difference]: Start difference. First operand 956 states and 2262 transitions. Second operand has 117 states, 116 states have (on average 1.0172413793103448) internal successors, (118), 116 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:03,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:35:03,451 INFO L93 Difference]: Finished difference Result 1886 states and 4463 transitions. [2021-10-13 19:35:03,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2021-10-13 19:35:03,451 INFO L78 Accepts]: Start accepts. Automaton has has 117 states, 116 states have (on average 1.0172413793103448) internal successors, (118), 116 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-10-13 19:35:03,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:35:03,454 INFO L225 Difference]: With dead ends: 1886 [2021-10-13 19:35:03,454 INFO L226 Difference]: Without dead ends: 1420 [2021-10-13 19:35:03,454 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5479.1ms TimeCoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2021-10-13 19:35:03,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2021-10-13 19:35:03,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 964. [2021-10-13 19:35:03,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 964 states, 961 states have (on average 2.3735691987513006) internal successors, (2281), 963 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) [2021-10-13 19:35:03,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 2281 transitions. [2021-10-13 19:35:03,494 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 2281 transitions. Word has length 118 [2021-10-13 19:35:03,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:35:03,494 INFO L470 AbstractCegarLoop]: Abstraction has 964 states and 2281 transitions. [2021-10-13 19:35:03,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 117 states, 116 states have (on average 1.0172413793103448) internal successors, (118), 116 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:03,495 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 2281 transitions. [2021-10-13 19:35:03,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-10-13 19:35:03,496 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:35:03,496 INFO L512 BasicCegarLoop]: trace histogram [115, 1, 1, 1, 1] [2021-10-13 19:35:03,528 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Ended with exit code 0 [2021-10-13 19:35:03,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,118 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:35:03,697 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:35:03,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:35:03,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1402318428, now seen corresponding path program 115 times [2021-10-13 19:35:03,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:35:03,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968532674] [2021-10-13 19:35:03,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:35:03,699 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:35:03,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:35:09,648 INFO L134 CoverageAnalysis]: Checked inductivity of 6670 backedges. 0 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:35:09,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:35:09,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968532674] [2021-10-13 19:35:09,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968532674] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:35:09,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528904069] [2021-10-13 19:35:09,649 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:35:09,649 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:35:09,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:35:09,651 INFO L229 MonitoredProcess]: Starting monitored process 119 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:35:09,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2021-10-13 19:35:11,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:35:11,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 1087 conjuncts, 118 conjunts are in the unsatisfiable core [2021-10-13 19:35:11,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:35:12,101 INFO L134 CoverageAnalysis]: Checked inductivity of 6670 backedges. 0 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:35:12,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528904069] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:35:12,101 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:35:12,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [116, 116] total 116 [2021-10-13 19:35:12,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474538864] [2021-10-13 19:35:12,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 118 states [2021-10-13 19:35:12,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:35:12,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2021-10-13 19:35:12,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2021-10-13 19:35:12,105 INFO L87 Difference]: Start difference. First operand 964 states and 2281 transitions. Second operand has 118 states, 117 states have (on average 1.017094017094017) internal successors, (119), 117 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:17,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:35:17,769 INFO L93 Difference]: Finished difference Result 1902 states and 4501 transitions. [2021-10-13 19:35:17,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2021-10-13 19:35:17,770 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 117 states have (on average 1.017094017094017) internal successors, (119), 117 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2021-10-13 19:35:17,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:35:17,773 INFO L225 Difference]: With dead ends: 1902 [2021-10-13 19:35:17,773 INFO L226 Difference]: Without dead ends: 1432 [2021-10-13 19:35:17,774 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5672.3ms TimeCoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2021-10-13 19:35:17,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2021-10-13 19:35:17,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 972. [2021-10-13 19:35:17,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 969 states have (on average 2.3735810113519094) internal successors, (2300), 971 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:17,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 2300 transitions. [2021-10-13 19:35:17,787 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 2300 transitions. Word has length 119 [2021-10-13 19:35:17,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:35:17,787 INFO L470 AbstractCegarLoop]: Abstraction has 972 states and 2300 transitions. [2021-10-13 19:35:17,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 118 states, 117 states have (on average 1.017094017094017) internal successors, (119), 117 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:17,788 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 2300 transitions. [2021-10-13 19:35:17,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-13 19:35:17,789 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:35:17,789 INFO L512 BasicCegarLoop]: trace histogram [116, 1, 1, 1, 1] [2021-10-13 19:35:17,821 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Ended with exit code 0 [2021-10-13 19:35:17,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2021-10-13 19:35:17,990 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:35:17,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:35:17,991 INFO L82 PathProgramCache]: Analyzing trace with hash -522196875, now seen corresponding path program 116 times [2021-10-13 19:35:17,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:35:17,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806211188] [2021-10-13 19:35:17,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:35:17,992 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:35:18,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:35:23,873 INFO L134 CoverageAnalysis]: Checked inductivity of 6786 backedges. 0 proven. 6786 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:35:23,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:35:23,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806211188] [2021-10-13 19:35:23,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806211188] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:35:23,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902717788] [2021-10-13 19:35:23,874 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:35:23,874 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:35:23,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:35:23,876 INFO L229 MonitoredProcess]: Starting monitored process 120 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:35:23,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2021-10-13 19:35:26,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:35:26,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:35:26,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 1096 conjuncts, 119 conjunts are in the unsatisfiable core [2021-10-13 19:35:26,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:35:26,466 INFO L134 CoverageAnalysis]: Checked inductivity of 6786 backedges. 0 proven. 6786 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:35:26,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902717788] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:35:26,466 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:35:26,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [117, 117] total 117 [2021-10-13 19:35:26,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85553770] [2021-10-13 19:35:26,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2021-10-13 19:35:26,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:35:26,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2021-10-13 19:35:26,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2021-10-13 19:35:26,469 INFO L87 Difference]: Start difference. First operand 972 states and 2300 transitions. Second operand has 119 states, 118 states have (on average 1.0169491525423728) internal successors, (120), 118 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:32,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:35:32,247 INFO L93 Difference]: Finished difference Result 1918 states and 4539 transitions. [2021-10-13 19:35:32,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2021-10-13 19:35:32,248 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 118 states have (on average 1.0169491525423728) internal successors, (120), 118 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-10-13 19:35:32,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:35:32,251 INFO L225 Difference]: With dead ends: 1918 [2021-10-13 19:35:32,251 INFO L226 Difference]: Without dead ends: 1444 [2021-10-13 19:35:32,252 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5619.3ms TimeCoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2021-10-13 19:35:32,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1444 states. [2021-10-13 19:35:32,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1444 to 980. [2021-10-13 19:35:32,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 980 states, 977 states have (on average 2.3735926305015353) internal successors, (2319), 979 states have internal predecessors, (2319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:32,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 2319 transitions. [2021-10-13 19:35:32,266 INFO L78 Accepts]: Start accepts. Automaton has 980 states and 2319 transitions. Word has length 120 [2021-10-13 19:35:32,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:35:32,266 INFO L470 AbstractCegarLoop]: Abstraction has 980 states and 2319 transitions. [2021-10-13 19:35:32,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 118 states have (on average 1.0169491525423728) internal successors, (120), 118 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:32,266 INFO L276 IsEmpty]: Start isEmpty. Operand 980 states and 2319 transitions. [2021-10-13 19:35:32,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-10-13 19:35:32,268 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:35:32,268 INFO L512 BasicCegarLoop]: trace histogram [117, 1, 1, 1, 1] [2021-10-13 19:35:32,301 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Ended with exit code 0 [2021-10-13 19:35:32,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2021-10-13 19:35:32,469 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:35:32,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:35:32,469 INFO L82 PathProgramCache]: Analyzing trace with hash 991767492, now seen corresponding path program 117 times [2021-10-13 19:35:32,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:35:32,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98247852] [2021-10-13 19:35:32,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:35:32,470 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:35:32,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:35:38,484 INFO L134 CoverageAnalysis]: Checked inductivity of 6903 backedges. 0 proven. 6903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:35:38,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:35:38,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98247852] [2021-10-13 19:35:38,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98247852] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:35:38,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263849033] [2021-10-13 19:35:38,485 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:35:38,485 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:35:38,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:35:38,486 INFO L229 MonitoredProcess]: Starting monitored process 121 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:35:38,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2021-10-13 19:35:40,894 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 60 check-sat command(s) [2021-10-13 19:35:40,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:35:40,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 1105 conjuncts, 120 conjunts are in the unsatisfiable core [2021-10-13 19:35:40,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:35:41,224 INFO L134 CoverageAnalysis]: Checked inductivity of 6903 backedges. 0 proven. 6903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:35:41,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263849033] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:35:41,225 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:35:41,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 118] total 118 [2021-10-13 19:35:41,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485440657] [2021-10-13 19:35:41,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 120 states [2021-10-13 19:35:41,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:35:41,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2021-10-13 19:35:41,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2021-10-13 19:35:41,231 INFO L87 Difference]: Start difference. First operand 980 states and 2319 transitions. Second operand has 120 states, 119 states have (on average 1.0168067226890756) internal successors, (121), 119 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:47,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:35:47,117 INFO L93 Difference]: Finished difference Result 1934 states and 4577 transitions. [2021-10-13 19:35:47,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2021-10-13 19:35:47,117 INFO L78 Accepts]: Start accepts. Automaton has has 120 states, 119 states have (on average 1.0168067226890756) internal successors, (121), 119 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-10-13 19:35:47,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:35:47,120 INFO L225 Difference]: With dead ends: 1934 [2021-10-13 19:35:47,120 INFO L226 Difference]: Without dead ends: 1456 [2021-10-13 19:35:47,121 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5720.0ms TimeCoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2021-10-13 19:35:47,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2021-10-13 19:35:47,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 988. [2021-10-13 19:35:47,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 988 states, 985 states have (on average 2.3736040609137055) internal successors, (2338), 987 states have internal predecessors, (2338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:47,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 2338 transitions. [2021-10-13 19:35:47,135 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 2338 transitions. Word has length 121 [2021-10-13 19:35:47,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:35:47,135 INFO L470 AbstractCegarLoop]: Abstraction has 988 states and 2338 transitions. [2021-10-13 19:35:47,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 120 states, 119 states have (on average 1.0168067226890756) internal successors, (121), 119 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:47,136 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 2338 transitions. [2021-10-13 19:35:47,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-10-13 19:35:47,137 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:35:47,137 INFO L512 BasicCegarLoop]: trace histogram [118, 1, 1, 1, 1] [2021-10-13 19:35:47,172 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Ended with exit code 0 [2021-10-13 19:35:47,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2021-10-13 19:35:47,338 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:35:47,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:35:47,339 INFO L82 PathProgramCache]: Analyzing trace with hash 680022613, now seen corresponding path program 118 times [2021-10-13 19:35:47,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:35:47,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790009196] [2021-10-13 19:35:47,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:35:47,340 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:35:47,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:35:53,403 INFO L134 CoverageAnalysis]: Checked inductivity of 7021 backedges. 0 proven. 7021 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:35:53,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:35:53,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790009196] [2021-10-13 19:35:53,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790009196] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:35:53,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540626469] [2021-10-13 19:35:53,404 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:35:53,404 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:35:53,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:35:53,405 INFO L229 MonitoredProcess]: Starting monitored process 122 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:35:53,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2021-10-13 19:35:55,644 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:35:55,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:35:55,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 1114 conjuncts, 121 conjunts are in the unsatisfiable core [2021-10-13 19:35:55,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:35:55,949 INFO L134 CoverageAnalysis]: Checked inductivity of 7021 backedges. 0 proven. 7021 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:35:55,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540626469] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:35:55,950 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:35:55,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [119, 119] total 119 [2021-10-13 19:35:55,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912582451] [2021-10-13 19:35:55,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 121 states [2021-10-13 19:35:55,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:35:55,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2021-10-13 19:35:55,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2021-10-13 19:35:55,953 INFO L87 Difference]: Start difference. First operand 988 states and 2338 transitions. Second operand has 121 states, 120 states have (on average 1.0166666666666666) internal successors, (122), 120 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:01,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:36:01,866 INFO L93 Difference]: Finished difference Result 1950 states and 4615 transitions. [2021-10-13 19:36:01,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2021-10-13 19:36:01,867 INFO L78 Accepts]: Start accepts. Automaton has has 121 states, 120 states have (on average 1.0166666666666666) internal successors, (122), 120 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-10-13 19:36:01,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:36:01,869 INFO L225 Difference]: With dead ends: 1950 [2021-10-13 19:36:01,869 INFO L226 Difference]: Without dead ends: 1468 [2021-10-13 19:36:01,876 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5755.0ms TimeCoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2021-10-13 19:36:01,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1468 states. [2021-10-13 19:36:01,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1468 to 996. [2021-10-13 19:36:01,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996 states, 993 states have (on average 2.3736153071500503) internal successors, (2357), 995 states have internal predecessors, (2357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:01,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 2357 transitions. [2021-10-13 19:36:01,895 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 2357 transitions. Word has length 122 [2021-10-13 19:36:01,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:36:01,896 INFO L470 AbstractCegarLoop]: Abstraction has 996 states and 2357 transitions. [2021-10-13 19:36:01,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 121 states, 120 states have (on average 1.0166666666666666) internal successors, (122), 120 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:01,896 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 2357 transitions. [2021-10-13 19:36:01,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-10-13 19:36:01,898 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:36:01,898 INFO L512 BasicCegarLoop]: trace histogram [119, 1, 1, 1, 1] [2021-10-13 19:36:01,931 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Ended with exit code 0 [2021-10-13 19:36:02,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2021-10-13 19:36:02,108 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:36:02,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:36:02,109 INFO L82 PathProgramCache]: Analyzing trace with hash -394134044, now seen corresponding path program 119 times [2021-10-13 19:36:02,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:36:02,109 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937628187] [2021-10-13 19:36:02,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:36:02,110 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:36:02,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:36:08,350 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:36:08,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:36:08,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937628187] [2021-10-13 19:36:08,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937628187] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:36:08,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579815319] [2021-10-13 19:36:08,351 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:36:08,351 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:36:08,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:36:08,352 INFO L229 MonitoredProcess]: Starting monitored process 123 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:36:08,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2021-10-13 19:36:10,762 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 61 check-sat command(s) [2021-10-13 19:36:10,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:36:10,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 1123 conjuncts, 122 conjunts are in the unsatisfiable core [2021-10-13 19:36:10,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:36:11,067 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:36:11,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579815319] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:36:11,068 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:36:11,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [120, 120] total 120 [2021-10-13 19:36:11,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485198479] [2021-10-13 19:36:11,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 122 states [2021-10-13 19:36:11,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:36:11,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2021-10-13 19:36:11,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7381, Invalid=7381, Unknown=0, NotChecked=0, Total=14762 [2021-10-13 19:36:11,071 INFO L87 Difference]: Start difference. First operand 996 states and 2357 transitions. Second operand has 122 states, 121 states have (on average 1.0165289256198347) internal successors, (123), 121 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:17,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:36:17,103 INFO L93 Difference]: Finished difference Result 1966 states and 4653 transitions. [2021-10-13 19:36:17,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2021-10-13 19:36:17,104 INFO L78 Accepts]: Start accepts. Automaton has has 122 states, 121 states have (on average 1.0165289256198347) internal successors, (123), 121 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2021-10-13 19:36:17,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:36:17,107 INFO L225 Difference]: With dead ends: 1966 [2021-10-13 19:36:17,107 INFO L226 Difference]: Without dead ends: 1480 [2021-10-13 19:36:17,108 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5963.8ms TimeCoverageRelationStatistics Valid=7381, Invalid=7381, Unknown=0, NotChecked=0, Total=14762 [2021-10-13 19:36:17,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2021-10-13 19:36:17,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 1004. [2021-10-13 19:36:17,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 1001 states have (on average 2.3736263736263736) internal successors, (2376), 1003 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:17,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 2376 transitions. [2021-10-13 19:36:17,125 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 2376 transitions. Word has length 123 [2021-10-13 19:36:17,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:36:17,126 INFO L470 AbstractCegarLoop]: Abstraction has 1004 states and 2376 transitions. [2021-10-13 19:36:17,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 122 states, 121 states have (on average 1.0165289256198347) internal successors, (123), 121 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:17,126 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 2376 transitions. [2021-10-13 19:36:17,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-10-13 19:36:17,128 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:36:17,128 INFO L512 BasicCegarLoop]: trace histogram [120, 1, 1, 1, 1] [2021-10-13 19:36:17,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Forceful destruction successful, exit code 0 [2021-10-13 19:36:17,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126,123 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:36:17,331 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:36:17,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:36:17,332 INFO L82 PathProgramCache]: Analyzing trace with hash 666747957, now seen corresponding path program 120 times [2021-10-13 19:36:17,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:36:17,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698780368] [2021-10-13 19:36:17,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:36:17,334 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:36:17,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:36:23,606 INFO L134 CoverageAnalysis]: Checked inductivity of 7260 backedges. 0 proven. 7260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:36:23,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:36:23,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698780368] [2021-10-13 19:36:23,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698780368] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:36:23,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974824899] [2021-10-13 19:36:23,606 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:36:23,607 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:36:23,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:36:23,608 INFO L229 MonitoredProcess]: Starting monitored process 124 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:36:23,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2021-10-13 19:36:26,108 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2021-10-13 19:36:26,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:36:26,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 1132 conjuncts, 123 conjunts are in the unsatisfiable core [2021-10-13 19:36:26,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:36:26,408 INFO L134 CoverageAnalysis]: Checked inductivity of 7260 backedges. 0 proven. 7260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:36:26,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974824899] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:36:26,408 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:36:26,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [121, 121] total 121 [2021-10-13 19:36:26,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954507738] [2021-10-13 19:36:26,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 123 states [2021-10-13 19:36:26,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:36:26,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2021-10-13 19:36:26,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2021-10-13 19:36:26,413 INFO L87 Difference]: Start difference. First operand 1004 states and 2376 transitions. Second operand has 123 states, 122 states have (on average 1.0163934426229508) internal successors, (124), 122 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:32,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:36:32,725 INFO L93 Difference]: Finished difference Result 1982 states and 4691 transitions. [2021-10-13 19:36:32,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2021-10-13 19:36:32,725 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 122 states have (on average 1.0163934426229508) internal successors, (124), 122 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-10-13 19:36:32,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:36:32,729 INFO L225 Difference]: With dead ends: 1982 [2021-10-13 19:36:32,729 INFO L226 Difference]: Without dead ends: 1492 [2021-10-13 19:36:32,730 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5974.3ms TimeCoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2021-10-13 19:36:32,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2021-10-13 19:36:32,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 1012. [2021-10-13 19:36:32,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1012 states, 1009 states have (on average 2.3736372646184343) internal successors, (2395), 1011 states have internal predecessors, (2395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:32,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1012 states to 1012 states and 2395 transitions. [2021-10-13 19:36:32,748 INFO L78 Accepts]: Start accepts. Automaton has 1012 states and 2395 transitions. Word has length 124 [2021-10-13 19:36:32,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:36:32,749 INFO L470 AbstractCegarLoop]: Abstraction has 1012 states and 2395 transitions. [2021-10-13 19:36:32,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 123 states, 122 states have (on average 1.0163934426229508) internal successors, (124), 122 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:32,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states and 2395 transitions. [2021-10-13 19:36:32,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-10-13 19:36:32,751 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:36:32,751 INFO L512 BasicCegarLoop]: trace histogram [121, 1, 1, 1, 1] [2021-10-13 19:36:32,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Forceful destruction successful, exit code 0 [2021-10-13 19:36:32,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable127 [2021-10-13 19:36:32,960 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:36:32,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:36:32,961 INFO L82 PathProgramCache]: Analyzing trace with hash -805648380, now seen corresponding path program 121 times [2021-10-13 19:36:32,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:36:32,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953495902] [2021-10-13 19:36:32,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:36:32,962 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:36:33,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:36:39,349 INFO L134 CoverageAnalysis]: Checked inductivity of 7381 backedges. 0 proven. 7381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:36:39,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:36:39,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953495902] [2021-10-13 19:36:39,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953495902] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:36:39,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960597343] [2021-10-13 19:36:39,350 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:36:39,350 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:36:39,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:36:39,351 INFO L229 MonitoredProcess]: Starting monitored process 125 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:36:39,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2021-10-13 19:36:41,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:36:41,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 1141 conjuncts, 124 conjunts are in the unsatisfiable core [2021-10-13 19:36:41,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:36:42,068 INFO L134 CoverageAnalysis]: Checked inductivity of 7381 backedges. 0 proven. 7381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:36:42,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960597343] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:36:42,069 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:36:42,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [122, 122] total 122 [2021-10-13 19:36:42,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889343453] [2021-10-13 19:36:42,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 124 states [2021-10-13 19:36:42,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:36:42,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2021-10-13 19:36:42,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7626, Invalid=7626, Unknown=0, NotChecked=0, Total=15252 [2021-10-13 19:36:42,072 INFO L87 Difference]: Start difference. First operand 1012 states and 2395 transitions. Second operand has 124 states, 123 states have (on average 1.016260162601626) internal successors, (125), 123 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:48,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:36:48,409 INFO L93 Difference]: Finished difference Result 1998 states and 4729 transitions. [2021-10-13 19:36:48,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2021-10-13 19:36:48,409 INFO L78 Accepts]: Start accepts. Automaton has has 124 states, 123 states have (on average 1.016260162601626) internal successors, (125), 123 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-10-13 19:36:48,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:36:48,412 INFO L225 Difference]: With dead ends: 1998 [2021-10-13 19:36:48,412 INFO L226 Difference]: Without dead ends: 1504 [2021-10-13 19:36:48,413 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6107.5ms TimeCoverageRelationStatistics Valid=7626, Invalid=7626, Unknown=0, NotChecked=0, Total=15252 [2021-10-13 19:36:48,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1504 states. [2021-10-13 19:36:48,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1504 to 1020. [2021-10-13 19:36:48,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1020 states, 1017 states have (on average 2.3736479842674534) internal successors, (2414), 1019 states have internal predecessors, (2414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:48,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 2414 transitions. [2021-10-13 19:36:48,434 INFO L78 Accepts]: Start accepts. Automaton has 1020 states and 2414 transitions. Word has length 125 [2021-10-13 19:36:48,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:36:48,435 INFO L470 AbstractCegarLoop]: Abstraction has 1020 states and 2414 transitions. [2021-10-13 19:36:48,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 124 states, 123 states have (on average 1.016260162601626) internal successors, (125), 123 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:48,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states and 2414 transitions. [2021-10-13 19:36:48,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-10-13 19:36:48,437 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:36:48,437 INFO L512 BasicCegarLoop]: trace histogram [122, 1, 1, 1, 1] [2021-10-13 19:36:48,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Forceful destruction successful, exit code 0 [2021-10-13 19:36:48,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128,125 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:36:48,651 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:36:48,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:36:48,652 INFO L82 PathProgramCache]: Analyzing trace with hash 794705429, now seen corresponding path program 122 times [2021-10-13 19:36:48,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:36:48,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106127342] [2021-10-13 19:36:48,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:36:48,653 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:36:48,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:36:55,273 INFO L134 CoverageAnalysis]: Checked inductivity of 7503 backedges. 0 proven. 7503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:36:55,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:36:55,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106127342] [2021-10-13 19:36:55,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106127342] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:36:55,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488702755] [2021-10-13 19:36:55,274 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:36:55,275 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:36:55,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:36:55,277 INFO L229 MonitoredProcess]: Starting monitored process 126 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:36:55,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2021-10-13 19:36:57,772 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:36:57,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:36:57,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 1150 conjuncts, 125 conjunts are in the unsatisfiable core [2021-10-13 19:36:57,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:36:58,059 INFO L134 CoverageAnalysis]: Checked inductivity of 7503 backedges. 0 proven. 7503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:36:58,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488702755] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:36:58,060 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:36:58,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [123, 123] total 123 [2021-10-13 19:36:58,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625283013] [2021-10-13 19:36:58,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 125 states [2021-10-13 19:36:58,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:36:58,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2021-10-13 19:36:58,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2021-10-13 19:36:58,065 INFO L87 Difference]: Start difference. First operand 1020 states and 2414 transitions. Second operand has 125 states, 124 states have (on average 1.0161290322580645) internal successors, (126), 124 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:04,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:37:04,835 INFO L93 Difference]: Finished difference Result 2014 states and 4767 transitions. [2021-10-13 19:37:04,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2021-10-13 19:37:04,836 INFO L78 Accepts]: Start accepts. Automaton has has 125 states, 124 states have (on average 1.0161290322580645) internal successors, (126), 124 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2021-10-13 19:37:04,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:37:04,838 INFO L225 Difference]: With dead ends: 2014 [2021-10-13 19:37:04,838 INFO L226 Difference]: Without dead ends: 1516 [2021-10-13 19:37:04,839 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6318.6ms TimeCoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2021-10-13 19:37:04,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1516 states. [2021-10-13 19:37:04,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1516 to 1028. [2021-10-13 19:37:04,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 1025 states have (on average 2.3736585365853657) internal successors, (2433), 1027 states have internal predecessors, (2433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:04,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 2433 transitions. [2021-10-13 19:37:04,853 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 2433 transitions. Word has length 126 [2021-10-13 19:37:04,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:37:04,853 INFO L470 AbstractCegarLoop]: Abstraction has 1028 states and 2433 transitions. [2021-10-13 19:37:04,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 125 states, 124 states have (on average 1.0161290322580645) internal successors, (126), 124 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:04,853 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 2433 transitions. [2021-10-13 19:37:04,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-10-13 19:37:04,855 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:37:04,855 INFO L512 BasicCegarLoop]: trace histogram [123, 1, 1, 1, 1] [2021-10-13 19:37:04,888 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Ended with exit code 0 [2021-10-13 19:37:05,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2021-10-13 19:37:05,056 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:37:05,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:37:05,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1133934044, now seen corresponding path program 123 times [2021-10-13 19:37:05,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:37:05,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386894555] [2021-10-13 19:37:05,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:37:05,057 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:37:05,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:37:11,715 INFO L134 CoverageAnalysis]: Checked inductivity of 7626 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:37:11,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:37:11,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386894555] [2021-10-13 19:37:11,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386894555] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:37:11,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154315681] [2021-10-13 19:37:11,716 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:37:11,717 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:37:11,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:37:11,720 INFO L229 MonitoredProcess]: Starting monitored process 127 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:37:11,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Waiting until timeout for monitored process [2021-10-13 19:37:14,429 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 63 check-sat command(s) [2021-10-13 19:37:14,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:37:14,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 126 conjunts are in the unsatisfiable core [2021-10-13 19:37:14,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:37:14,757 INFO L134 CoverageAnalysis]: Checked inductivity of 7626 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:37:14,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154315681] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:37:14,757 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:37:14,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [124, 124] total 124 [2021-10-13 19:37:14,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407298774] [2021-10-13 19:37:14,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 126 states [2021-10-13 19:37:14,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:37:14,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2021-10-13 19:37:14,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7875, Invalid=7875, Unknown=0, NotChecked=0, Total=15750 [2021-10-13 19:37:14,760 INFO L87 Difference]: Start difference. First operand 1028 states and 2433 transitions. Second operand has 126 states, 125 states have (on average 1.016) internal successors, (127), 125 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:21,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:37:21,982 INFO L93 Difference]: Finished difference Result 2030 states and 4805 transitions. [2021-10-13 19:37:21,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2021-10-13 19:37:21,983 INFO L78 Accepts]: Start accepts. Automaton has has 126 states, 125 states have (on average 1.016) internal successors, (127), 125 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2021-10-13 19:37:21,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:37:21,985 INFO L225 Difference]: With dead ends: 2030 [2021-10-13 19:37:21,985 INFO L226 Difference]: Without dead ends: 1528 [2021-10-13 19:37:21,986 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6335.6ms TimeCoverageRelationStatistics Valid=7875, Invalid=7875, Unknown=0, NotChecked=0, Total=15750 [2021-10-13 19:37:21,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2021-10-13 19:37:21,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 1036. [2021-10-13 19:37:22,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1036 states, 1033 states have (on average 2.3736689254598256) internal successors, (2452), 1035 states have internal predecessors, (2452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:22,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 2452 transitions. [2021-10-13 19:37:22,002 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 2452 transitions. Word has length 127 [2021-10-13 19:37:22,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:37:22,002 INFO L470 AbstractCegarLoop]: Abstraction has 1036 states and 2452 transitions. [2021-10-13 19:37:22,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 126 states, 125 states have (on average 1.016) internal successors, (127), 125 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:22,003 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 2452 transitions. [2021-10-13 19:37:22,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-10-13 19:37:22,004 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:37:22,004 INFO L512 BasicCegarLoop]: trace histogram [124, 1, 1, 1, 1] [2021-10-13 19:37:22,037 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Ended with exit code 0 [2021-10-13 19:37:22,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,127 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:37:22,210 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:37:22,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:37:22,211 INFO L82 PathProgramCache]: Analyzing trace with hash -792215563, now seen corresponding path program 124 times [2021-10-13 19:37:22,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:37:22,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558363561] [2021-10-13 19:37:22,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:37:22,211 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:37:22,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:37:28,858 INFO L134 CoverageAnalysis]: Checked inductivity of 7750 backedges. 0 proven. 7750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:37:28,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:37:28,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558363561] [2021-10-13 19:37:28,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558363561] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:37:28,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757966654] [2021-10-13 19:37:28,860 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:37:28,860 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:37:28,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:37:28,862 INFO L229 MonitoredProcess]: Starting monitored process 128 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:37:28,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Waiting until timeout for monitored process [2021-10-13 19:37:31,431 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:37:31,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:37:31,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 1168 conjuncts, 127 conjunts are in the unsatisfiable core [2021-10-13 19:37:31,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:37:31,732 INFO L134 CoverageAnalysis]: Checked inductivity of 7750 backedges. 0 proven. 7750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:37:31,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757966654] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:37:31,733 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:37:31,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [125, 125] total 125 [2021-10-13 19:37:31,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697562006] [2021-10-13 19:37:31,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 127 states [2021-10-13 19:37:31,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:37:31,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2021-10-13 19:37:31,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8001, Invalid=8001, Unknown=0, NotChecked=0, Total=16002 [2021-10-13 19:37:31,736 INFO L87 Difference]: Start difference. First operand 1036 states and 2452 transitions. Second operand has 127 states, 126 states have (on average 1.0158730158730158) internal successors, (128), 126 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:39,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:37:39,687 INFO L93 Difference]: Finished difference Result 2046 states and 4843 transitions. [2021-10-13 19:37:39,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2021-10-13 19:37:39,688 INFO L78 Accepts]: Start accepts. Automaton has has 127 states, 126 states have (on average 1.0158730158730158) internal successors, (128), 126 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2021-10-13 19:37:39,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:37:39,690 INFO L225 Difference]: With dead ends: 2046 [2021-10-13 19:37:39,690 INFO L226 Difference]: Without dead ends: 1540 [2021-10-13 19:37:39,691 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6350.2ms TimeCoverageRelationStatistics Valid=8001, Invalid=8001, Unknown=0, NotChecked=0, Total=16002 [2021-10-13 19:37:39,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1540 states. [2021-10-13 19:37:39,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1540 to 1044. [2021-10-13 19:37:39,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1044 states, 1041 states have (on average 2.3736791546589817) internal successors, (2471), 1043 states have internal predecessors, (2471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:39,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1044 states to 1044 states and 2471 transitions. [2021-10-13 19:37:39,704 INFO L78 Accepts]: Start accepts. Automaton has 1044 states and 2471 transitions. Word has length 128 [2021-10-13 19:37:39,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:37:39,705 INFO L470 AbstractCegarLoop]: Abstraction has 1044 states and 2471 transitions. [2021-10-13 19:37:39,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 127 states, 126 states have (on average 1.0158730158730158) internal successors, (128), 126 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:39,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1044 states and 2471 transitions. [2021-10-13 19:37:39,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-10-13 19:37:39,706 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:37:39,706 INFO L512 BasicCegarLoop]: trace histogram [125, 1, 1, 1, 1] [2021-10-13 19:37:39,738 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Ended with exit code 0 [2021-10-13 19:37:39,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,128 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:37:39,907 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:37:39,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:37:39,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1211122756, now seen corresponding path program 125 times [2021-10-13 19:37:39,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:37:39,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344120269] [2021-10-13 19:37:39,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:37:39,909 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:37:39,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:37:46,718 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:37:46,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:37:46,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344120269] [2021-10-13 19:37:46,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344120269] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:37:46,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815898902] [2021-10-13 19:37:46,719 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:37:46,719 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:37:46,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:37:46,721 INFO L229 MonitoredProcess]: Starting monitored process 129 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:37:46,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Waiting until timeout for monitored process [2021-10-13 19:37:49,431 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 64 check-sat command(s) [2021-10-13 19:37:49,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:37:49,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 1177 conjuncts, 128 conjunts are in the unsatisfiable core [2021-10-13 19:37:49,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:37:49,797 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:37:49,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815898902] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:37:49,798 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:37:49,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [126, 126] total 126 [2021-10-13 19:37:49,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676878816] [2021-10-13 19:37:49,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2021-10-13 19:37:49,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:37:49,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2021-10-13 19:37:49,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2021-10-13 19:37:49,801 INFO L87 Difference]: Start difference. First operand 1044 states and 2471 transitions. Second operand has 128 states, 127 states have (on average 1.015748031496063) internal successors, (129), 127 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:58,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:37:58,815 INFO L93 Difference]: Finished difference Result 2062 states and 4881 transitions. [2021-10-13 19:37:58,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2021-10-13 19:37:58,815 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 127 states have (on average 1.015748031496063) internal successors, (129), 127 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2021-10-13 19:37:58,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:37:58,818 INFO L225 Difference]: With dead ends: 2062 [2021-10-13 19:37:58,818 INFO L226 Difference]: Without dead ends: 1552 [2021-10-13 19:37:58,819 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6532.7ms TimeCoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2021-10-13 19:37:58,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2021-10-13 19:37:58,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 1052. [2021-10-13 19:37:58,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1052 states, 1049 states have (on average 2.373689227836034) internal successors, (2490), 1051 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:58,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 2490 transitions. [2021-10-13 19:37:58,833 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 2490 transitions. Word has length 129 [2021-10-13 19:37:58,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:37:58,834 INFO L470 AbstractCegarLoop]: Abstraction has 1052 states and 2490 transitions. [2021-10-13 19:37:58,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 127 states have (on average 1.015748031496063) internal successors, (129), 127 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:58,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 2490 transitions. [2021-10-13 19:37:58,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-10-13 19:37:58,835 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:37:58,835 INFO L512 BasicCegarLoop]: trace histogram [126, 1, 1, 1, 1] [2021-10-13 19:37:58,870 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Ended with exit code 0 [2021-10-13 19:37:59,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,129 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:37:59,036 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:37:59,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:37:59,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1109898795, now seen corresponding path program 126 times [2021-10-13 19:37:59,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:37:59,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262187158] [2021-10-13 19:37:59,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:37:59,038 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:37:59,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:38:06,153 INFO L134 CoverageAnalysis]: Checked inductivity of 8001 backedges. 0 proven. 8001 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:38:06,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:38:06,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262187158] [2021-10-13 19:38:06,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262187158] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:38:06,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101458818] [2021-10-13 19:38:06,154 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:38:06,154 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:38:06,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:38:06,155 INFO L229 MonitoredProcess]: Starting monitored process 130 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:38:06,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Waiting until timeout for monitored process [2021-10-13 19:38:08,940 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 64 check-sat command(s) [2021-10-13 19:38:08,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:38:08,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 1186 conjuncts, 129 conjunts are in the unsatisfiable core [2021-10-13 19:38:08,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:38:09,313 INFO L134 CoverageAnalysis]: Checked inductivity of 8001 backedges. 0 proven. 8001 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:38:09,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101458818] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:38:09,314 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:38:09,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [127, 127] total 127 [2021-10-13 19:38:09,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148872071] [2021-10-13 19:38:09,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 129 states [2021-10-13 19:38:09,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:38:09,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2021-10-13 19:38:09,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2021-10-13 19:38:09,317 INFO L87 Difference]: Start difference. First operand 1052 states and 2490 transitions. Second operand has 129 states, 128 states have (on average 1.015625) internal successors, (130), 128 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:38:17,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:38:17,557 INFO L93 Difference]: Finished difference Result 2078 states and 4919 transitions. [2021-10-13 19:38:17,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2021-10-13 19:38:17,557 INFO L78 Accepts]: Start accepts. Automaton has has 129 states, 128 states have (on average 1.015625) internal successors, (130), 128 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-10-13 19:38:17,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:38:17,560 INFO L225 Difference]: With dead ends: 2078 [2021-10-13 19:38:17,560 INFO L226 Difference]: Without dead ends: 1564 [2021-10-13 19:38:17,561 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6787.2ms TimeCoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2021-10-13 19:38:17,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1564 states. [2021-10-13 19:38:17,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1564 to 1060. [2021-10-13 19:38:17,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1060 states, 1057 states have (on average 2.3736991485335857) internal successors, (2509), 1059 states have internal predecessors, (2509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:38:17,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 2509 transitions. [2021-10-13 19:38:17,583 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 2509 transitions. Word has length 130 [2021-10-13 19:38:17,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:38:17,583 INFO L470 AbstractCegarLoop]: Abstraction has 1060 states and 2509 transitions. [2021-10-13 19:38:17,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 129 states, 128 states have (on average 1.015625) internal successors, (130), 128 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:38:17,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 2509 transitions. [2021-10-13 19:38:17,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-10-13 19:38:17,586 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:38:17,586 INFO L512 BasicCegarLoop]: trace histogram [127, 1, 1, 1, 1] [2021-10-13 19:38:17,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Forceful destruction successful, exit code 0 [2021-10-13 19:38:17,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2021-10-13 19:38:17,800 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-13 19:38:17,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:38:17,800 INFO L82 PathProgramCache]: Analyzing trace with hash -47122844, now seen corresponding path program 127 times [2021-10-13 19:38:17,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:38:17,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776061114] [2021-10-13 19:38:17,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:38:17,801 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:38:17,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:38:24,890 INFO L134 CoverageAnalysis]: Checked inductivity of 8128 backedges. 0 proven. 8128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:38:24,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:38:24,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776061114] [2021-10-13 19:38:24,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776061114] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:38:24,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24388635] [2021-10-13 19:38:24,891 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:38:24,892 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:38:24,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:38:24,893 INFO L229 MonitoredProcess]: Starting monitored process 131 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:38:24,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Waiting until timeout for monitored process Received shutdown request... [2021-10-13 19:38:25,041 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-13 19:38:25,044 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-13 19:38:26,059 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:38:26,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Forceful destruction successful, exit code 0 [2021-10-13 19:38:26,091 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 [2021-10-13 19:38:26,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 131 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2021-10-13 19:38:26,260 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 132 with TraceHistMax 127,while executing Executor. [2021-10-13 19:38:26,263 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:38:26,263 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:38:26,263 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:38:26,263 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:38:26,263 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:38:26,263 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:38:26,264 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:38:26,265 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:38:26,265 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 19:38:26,265 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-13 19:38:26,265 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:38:26,265 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:38:26,265 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:38:26,266 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:38:26,266 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:38:26,266 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:38:26,266 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:38:26,283 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-13 19:38:26,283 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 19:38:26,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:38:26 BasicIcfg [2021-10-13 19:38:26,292 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 19:38:26,292 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.witnessprinter [2021-10-13 19:38:26,293 INFO L168 Benchmark]: Toolchain (without parser) took 754503.03 ms. Allocated memory was 159.4 MB in the beginning and 1.8 GB in the end (delta: 1.6 GB). Free memory was 133.6 MB in the beginning and 257.9 MB in the end (delta: -124.3 MB). Peak memory consumption was 1.5 GB. Max. memory is 8.0 GB. [2021-10-13 19:38:26,294 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 159.4 MB. Free memory was 129.8 MB in the beginning and 129.4 MB in the end (delta: 435.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-10-13 19:38:26,294 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.68 ms. Allocated memory is still 159.4 MB. Free memory was 133.4 MB in the beginning and 123.5 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-13 19:38:26,295 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.78 ms. Allocated memory is still 159.4 MB. Free memory was 123.5 MB in the beginning and 121.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-13 19:38:26,295 INFO L168 Benchmark]: Boogie Preprocessor took 28.49 ms. Allocated memory is still 159.4 MB. Free memory was 121.9 MB in the beginning and 120.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-13 19:38:26,295 INFO L168 Benchmark]: RCFGBuilder took 634.17 ms. Allocated memory is still 159.4 MB. Free memory was 120.7 MB in the beginning and 105.7 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-10-13 19:38:26,296 INFO L168 Benchmark]: TraceAbstraction took 753513.04 ms. Allocated memory was 159.4 MB in the beginning and 1.8 GB in the end (delta: 1.6 GB). Free memory was 105.3 MB in the beginning and 257.9 MB in the end (delta: -152.7 MB). Peak memory consumption was 1.5 GB. Max. memory is 8.0 GB. [2021-10-13 19:38:26,298 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 159.4 MB. Free memory was 129.8 MB in the beginning and 129.4 MB in the end (delta: 435.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 266.68 ms. Allocated memory is still 159.4 MB. Free memory was 133.4 MB in the beginning and 123.5 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 41.78 ms. Allocated memory is still 159.4 MB. Free memory was 123.5 MB in the beginning and 121.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 28.49 ms. Allocated memory is still 159.4 MB. Free memory was 121.9 MB in the beginning and 120.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 634.17 ms. Allocated memory is still 159.4 MB. Free memory was 120.7 MB in the beginning and 105.7 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 753513.04 ms. Allocated memory was 159.4 MB in the beginning and 1.8 GB in the end (delta: 1.6 GB). Free memory was 105.3 MB in the beginning and 257.9 MB in the end (delta: -152.7 MB). Peak memory consumption was 1.5 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3344.2ms, 84 PlacesBefore, 30 PlacesAfterwards, 82 TransitionsBefore, 25 TransitionsAfterwards, 992 CoEnabledTransitionPairs, 6 FixpointIterations, 32 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 4 ConcurrentYvCompositions, 3 ChoiceCompositions, 73 TotalNumberOfCompositions, 1313 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1226, positive: 1217, positive conditional: 0, positive unconditional: 1217, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 620, positive: 615, positive conditional: 0, positive unconditional: 615, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 620, positive: 614, positive conditional: 0, positive unconditional: 614, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 6, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 26, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1226, positive: 602, positive conditional: 0, positive unconditional: 602, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 620, unknown conditional: 0, unknown unconditional: 620] , Statistics on independence cache: Total cache size (in pairs): 48, Positive cache size: 48, Positive conditional cache size: 0, Positive unconditional cache size: 48, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - 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 - TimeoutResultAtElement [Line: 43]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 132 with TraceHistMax 127,while executing Executor. - TimeoutResultAtElement [Line: 43]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 132 with TraceHistMax 127,while executing Executor. - TimeoutResultAtElement [Line: 41]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 132 with TraceHistMax 127,while executing Executor. - TimeoutResultAtElement [Line: 41]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 132 with TraceHistMax 127,while executing Executor. - TimeoutResultAtElement [Line: 54]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 132 with TraceHistMax 127,while executing Executor. - TimeoutResultAtElement [Line: 54]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 132 with TraceHistMax 127,while executing Executor. - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 132 with TraceHistMax 127,while executing Executor. - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 132 with TraceHistMax 127,while executing Executor. - TimeoutResultAtElement [Line: 68]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 132 with TraceHistMax 127,while executing Executor. - TimeoutResultAtElement [Line: 67]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 132 with TraceHistMax 127,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 110 locations, 18 error locations. Started 1 CEGAR loops. OverallTime: 753310.8ms, OverallIterations: 135, TraceHistogramMax: 127, EmptinessCheckTime: 187.8ms, AutomataDifference: 251585.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 3411.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 25764 SDtfs, 182485 SDslu, 139225 SDs, 0 SdLazy, 17775 SolverSat, 32098 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 24177.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16537 GetRequests, 8395 SyntacticMatches, 0 SemanticMatches, 8142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 290175.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1060occurred in iteration=134, InterpolantAutomatonStates: 8405, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1743.2ms AutomataMinimizationTime, 134 MinimizatonAttempts, 32308 StatesRemovedByMinimization, 131 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 2475.5ms SsaConstructionTime, 18091.3ms SatisfiabilityAnalysisTime, 329443.3ms InterpolantComputationTime, 17072 NumberOfCodeBlocks, 17070 NumberOfCodeBlocksAsserted, 2363 NumberOfCheckSat, 16809 ConstructedInterpolants, 0 QuantifiedInterpolants, 50381 SizeOfPredicates, 0 NumberOfNonLiveVariables, 78747 ConjunctsInSsa, 8391 ConjunctsInUnsatCore, 263 InterpolantComputations, 7 PerfectInterpolantSequences, 6/682764 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown