/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Overflow-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-08 15:49:30,206 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-08 15:49:30,211 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-08 15:49:30,277 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-08 15:49:30,392 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-08 15:49:30,393 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-08 15:49:30,394 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-08 15:49:30,395 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-10-08 15:49:30,425 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-08 15:49:30,426 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-08 15:49:30,426 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-08 15:49:30,426 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-08 15:49:30,428 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-08 15:49:30,428 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-08 15:49:30,429 INFO L138 SettingsManager]: * Use SBE=true [2021-10-08 15:49:30,429 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-08 15:49:30,429 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-08 15:49:30,429 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-08 15:49:30,430 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-08 15:49:30,430 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-08 15:49:30,430 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-08 15:49:30,430 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-08 15:49:30,431 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-08 15:49:30,431 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-08 15:49:30,431 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-08 15:49:30,431 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-08 15:49:30,432 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-08 15:49:30,432 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-08 15:49:30,432 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-08 15:49:30,432 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-08 15:49:30,433 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-08 15:49:30,433 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-08 15:49:30,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 15:49:30,433 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-08 15:49:30,433 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-08 15:49:30,434 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-08 15:49:30,434 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-08 15:49:30,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-08 15:49:30,434 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-08 15:49:30,435 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-08 15:49:30,435 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-08 15:49:30,819 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-08 15:49:30,861 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-08 15:49:30,865 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-08 15:49:30,867 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-08 15:49:30,868 INFO L275 PluginConnector]: CDTParser initialized [2021-10-08 15:49:30,869 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2021-10-08 15:49:30,949 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/187c020f6/010b0dabb5d649c0b253a80867d6937e/FLAGff8d17b5d [2021-10-08 15:49:31,582 INFO L306 CDTParser]: Found 1 translation units. [2021-10-08 15:49:31,582 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2021-10-08 15:49:31,592 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/187c020f6/010b0dabb5d649c0b253a80867d6937e/FLAGff8d17b5d [2021-10-08 15:49:31,903 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/187c020f6/010b0dabb5d649c0b253a80867d6937e [2021-10-08 15:49:31,909 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-08 15:49:31,919 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-08 15:49:31,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-08 15:49:31,921 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-08 15:49:31,925 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-08 15:49:31,926 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 03:49:31" (1/1) ... [2021-10-08 15:49:31,928 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3705c276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:49:31, skipping insertion in model container [2021-10-08 15:49:31,928 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 03:49:31" (1/1) ... [2021-10-08 15:49:31,937 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-08 15:49:31,960 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-08 15:49:32,164 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c[2811,2824] [2021-10-08 15:49:32,172 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 15:49:32,184 INFO L203 MainTranslator]: Completed pre-run [2021-10-08 15:49:32,216 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c[2811,2824] [2021-10-08 15:49:32,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 15:49:32,241 INFO L208 MainTranslator]: Completed translation [2021-10-08 15:49:32,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:49:32 WrapperNode [2021-10-08 15:49:32,242 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-08 15:49:32,244 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-08 15:49:32,244 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-08 15:49:32,245 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-08 15:49:32,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:49:32" (1/1) ... [2021-10-08 15:49:32,267 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:49:32" (1/1) ... [2021-10-08 15:49:32,297 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-08 15:49:32,298 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-08 15:49:32,298 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-08 15:49:32,299 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-08 15:49:32,310 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:49:32" (1/1) ... [2021-10-08 15:49:32,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:49:32" (1/1) ... [2021-10-08 15:49:32,314 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:49:32" (1/1) ... [2021-10-08 15:49:32,315 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:49:32" (1/1) ... [2021-10-08 15:49:32,323 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:49:32" (1/1) ... [2021-10-08 15:49:32,334 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:49:32" (1/1) ... [2021-10-08 15:49:32,340 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:49:32" (1/1) ... [2021-10-08 15:49:32,346 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-08 15:49:32,350 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-08 15:49:32,350 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-08 15:49:32,350 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-08 15:49:32,356 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:49:32" (1/1) ... [2021-10-08 15:49:32,365 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 15:49:32,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:49:32,402 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-08 15:49:32,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-08 15:49:32,484 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-08 15:49:32,484 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-08 15:49:32,485 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-08 15:49:32,485 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-08 15:49:32,485 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-08 15:49:32,485 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-08 15:49:32,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-08 15:49:32,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-08 15:49:32,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-08 15:49:32,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-08 15:49:32,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-08 15:49:32,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-08 15:49:32,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-08 15:49:32,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-08 15:49:32,490 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-08 15:49:33,036 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-08 15:49:33,036 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-10-08 15:49:33,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 03:49:33 BoogieIcfgContainer [2021-10-08 15:49:33,040 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-08 15:49:33,042 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-08 15:49:33,042 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-08 15:49:33,046 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-08 15:49:33,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.10 03:49:31" (1/3) ... [2021-10-08 15:49:33,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b42e5fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 03:49:33, skipping insertion in model container [2021-10-08 15:49:33,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:49:32" (2/3) ... [2021-10-08 15:49:33,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b42e5fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 03:49:33, skipping insertion in model container [2021-10-08 15:49:33,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 03:49:33" (3/3) ... [2021-10-08 15:49:33,051 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-min-max-1.wvr.c [2021-10-08 15:49:33,069 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-08 15:49:33,069 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-08 15:49:33,069 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-08 15:49:33,069 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-08 15:49:33,144 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,145 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,148 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,148 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,149 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,149 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,150 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,150 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,150 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,150 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,151 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,151 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,151 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,152 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,153 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,153 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,153 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,154 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,154 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,154 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,155 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,155 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,155 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,156 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,156 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,156 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,157 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,158 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,158 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,158 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,158 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,159 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,161 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,161 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,161 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,162 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,162 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,162 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,164 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,164 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,165 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,165 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,165 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,166 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,166 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,166 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,167 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,167 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,167 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,167 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,168 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,168 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,168 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,168 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,169 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,169 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,170 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,170 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,170 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,170 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,171 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,171 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,172 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,172 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,173 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,174 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,175 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,175 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,181 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,182 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,182 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,182 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,183 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,183 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,191 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,192 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,197 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,197 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,198 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,198 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,198 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,199 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:49:33,218 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-08 15:49:33,342 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-08 15:49:33,356 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-08 15:49:33,357 INFO L340 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2021-10-08 15:49:33,397 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-08 15:49:33,429 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 195 places, 200 transitions, 424 flow [2021-10-08 15:49:33,433 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 195 places, 200 transitions, 424 flow [2021-10-08 15:49:33,436 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 195 places, 200 transitions, 424 flow [2021-10-08 15:49:33,611 INFO L129 PetriNetUnfolder]: 15/197 cut-off events. [2021-10-08 15:49:33,611 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-08 15:49:33,621 INFO L84 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 197 events. 15/197 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 212 event pairs, 0 based on Foata normal form. 0/176 useless extension candidates. Maximal degree in co-relation 170. Up to 2 conditions per place. [2021-10-08 15:49:33,629 INFO L116 LiptonReduction]: Number of co-enabled transitions 2790 [2021-10-08 15:49:44,155 INFO L131 LiptonReduction]: Checked pairs total: 6233 [2021-10-08 15:49:44,156 INFO L133 LiptonReduction]: Total number of compositions: 205 [2021-10-08 15:49:44,166 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 48 places, 43 transitions, 110 flow [2021-10-08 15:49:44,231 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 657 states, 646 states have (on average 3.171826625386997) internal successors, (2049), 656 states have internal predecessors, (2049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:44,237 INFO L276 IsEmpty]: Start isEmpty. Operand has 657 states, 646 states have (on average 3.171826625386997) internal successors, (2049), 656 states have internal predecessors, (2049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:44,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-08 15:49:44,244 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:49:44,248 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-08 15:49:44,249 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2021-10-08 15:49:44,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:49:44,256 INFO L82 PathProgramCache]: Analyzing trace with hash 24080, now seen corresponding path program 1 times [2021-10-08 15:49:44,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:49:44,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913657725] [2021-10-08 15:49:44,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:49:44,269 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:49:44,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:49:44,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:49:44,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:49:44,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913657725] [2021-10-08 15:49:44,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913657725] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:49:44,479 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:49:44,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-08 15:49:44,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350985809] [2021-10-08 15:49:44,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 15:49:44,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:49:44,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 15:49:44,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:49:44,510 INFO L87 Difference]: Start difference. First operand has 657 states, 646 states have (on average 3.171826625386997) internal successors, (2049), 656 states have internal predecessors, (2049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:44,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:49:44,632 INFO L93 Difference]: Finished difference Result 1311 states and 4095 transitions. [2021-10-08 15:49:44,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 15:49:44,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-08 15:49:44,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:49:44,680 INFO L225 Difference]: With dead ends: 1311 [2021-10-08 15:49:44,680 INFO L226 Difference]: Without dead ends: 1307 [2021-10-08 15:49:44,682 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:49:44,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1307 states. [2021-10-08 15:49:44,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1307 to 656. [2021-10-08 15:49:44,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 646 states have (on average 3.1671826625387) internal successors, (2046), 655 states have internal predecessors, (2046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:44,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 2046 transitions. [2021-10-08 15:49:44,828 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 2046 transitions. Word has length 2 [2021-10-08 15:49:44,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:49:44,829 INFO L470 AbstractCegarLoop]: Abstraction has 656 states and 2046 transitions. [2021-10-08 15:49:44,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:44,829 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 2046 transitions. [2021-10-08 15:49:44,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 15:49:44,830 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:49:44,830 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 15:49:44,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-08 15:49:44,831 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2021-10-08 15:49:44,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:49:44,832 INFO L82 PathProgramCache]: Analyzing trace with hash 747744, now seen corresponding path program 1 times [2021-10-08 15:49:44,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:49:44,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659629766] [2021-10-08 15:49:44,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:49:44,833 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:49:44,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:49:44,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:49:44,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:49:44,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659629766] [2021-10-08 15:49:44,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659629766] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:49:44,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386934341] [2021-10-08 15:49:44,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:49:44,899 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:49:44,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:49:44,901 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:49:44,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-08 15:49:44,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:49:44,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 15:49:44,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:49:45,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:49:45,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386934341] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:49:45,038 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 15:49:45,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2021-10-08 15:49:45,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125302715] [2021-10-08 15:49:45,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 15:49:45,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:49:45,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 15:49:45,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 15:49:45,041 INFO L87 Difference]: Start difference. First operand 656 states and 2046 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:45,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:49:45,086 INFO L93 Difference]: Finished difference Result 1306 states and 4084 transitions. [2021-10-08 15:49:45,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 15:49:45,087 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-08 15:49:45,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:49:45,102 INFO L225 Difference]: With dead ends: 1306 [2021-10-08 15:49:45,102 INFO L226 Difference]: Without dead ends: 1306 [2021-10-08 15:49:45,103 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 15:49:45,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1306 states. [2021-10-08 15:49:45,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1306 to 655. [2021-10-08 15:49:45,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 646 states have (on average 3.1656346749226008) internal successors, (2045), 654 states have internal predecessors, (2045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:45,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 2045 transitions. [2021-10-08 15:49:45,175 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 2045 transitions. Word has length 3 [2021-10-08 15:49:45,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:49:45,176 INFO L470 AbstractCegarLoop]: Abstraction has 655 states and 2045 transitions. [2021-10-08 15:49:45,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:45,176 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 2045 transitions. [2021-10-08 15:49:45,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 15:49:45,177 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:49:45,177 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 15:49:45,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-08 15:49:45,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:49:45,394 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2021-10-08 15:49:45,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:49:45,396 INFO L82 PathProgramCache]: Analyzing trace with hash 747745, now seen corresponding path program 1 times [2021-10-08 15:49:45,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:49:45,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794420212] [2021-10-08 15:49:45,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:49:45,397 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:49:45,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:49:45,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:49:45,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:49:45,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794420212] [2021-10-08 15:49:45,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794420212] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:49:45,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998710206] [2021-10-08 15:49:45,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:49:45,456 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:49:45,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:49:45,457 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:49:45,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-08 15:49:45,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:49:45,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 15:49:45,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:49:45,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:49:45,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998710206] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:49:45,539 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 15:49:45,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 3 [2021-10-08 15:49:45,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097304324] [2021-10-08 15:49:45,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 15:49:45,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:49:45,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 15:49:45,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-08 15:49:45,549 INFO L87 Difference]: Start difference. First operand 655 states and 2045 transitions. Second operand has 5 states, 4 states have (on average 1.25) 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) [2021-10-08 15:49:45,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:49:45,620 INFO L93 Difference]: Finished difference Result 1958 states and 6125 transitions. [2021-10-08 15:49:45,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 15:49:45,621 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) 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 3 [2021-10-08 15:49:45,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:49:45,640 INFO L225 Difference]: With dead ends: 1958 [2021-10-08 15:49:45,641 INFO L226 Difference]: Without dead ends: 1958 [2021-10-08 15:49:45,641 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.0ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-08 15:49:45,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1958 states. [2021-10-08 15:49:45,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1958 to 656. [2021-10-08 15:49:45,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 647 states have (on average 3.1638330757341575) internal successors, (2047), 655 states have internal predecessors, (2047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:45,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 2047 transitions. [2021-10-08 15:49:45,688 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 2047 transitions. Word has length 3 [2021-10-08 15:49:45,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:49:45,689 INFO L470 AbstractCegarLoop]: Abstraction has 656 states and 2047 transitions. [2021-10-08 15:49:45,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) 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) [2021-10-08 15:49:45,690 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 2047 transitions. [2021-10-08 15:49:45,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-08 15:49:45,691 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:49:45,691 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-08 15:49:45,728 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-10-08 15:49:45,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:49:45,906 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2021-10-08 15:49:45,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:49:45,907 INFO L82 PathProgramCache]: Analyzing trace with hash 23181329, now seen corresponding path program 2 times [2021-10-08 15:49:45,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:49:45,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237025701] [2021-10-08 15:49:45,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:49:45,909 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:49:45,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:49:45,974 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:49:45,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:49:45,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237025701] [2021-10-08 15:49:45,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237025701] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:49:45,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055652098] [2021-10-08 15:49:45,975 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 15:49:45,975 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:49:45,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:49:45,976 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:49:46,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-08 15:49:46,063 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 15:49:46,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 15:49:46,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 15:49:46,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:49:46,087 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 15:49:46,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055652098] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:49:46,088 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 15:49:46,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2021-10-08 15:49:46,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278348047] [2021-10-08 15:49:46,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 15:49:46,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:49:46,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 15:49:46,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-08 15:49:46,091 INFO L87 Difference]: Start difference. First operand 656 states and 2047 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:46,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:49:46,123 INFO L93 Difference]: Finished difference Result 655 states and 2046 transitions. [2021-10-08 15:49:46,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 15:49:46,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-08 15:49:46,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:49:46,130 INFO L225 Difference]: With dead ends: 655 [2021-10-08 15:49:46,131 INFO L226 Difference]: Without dead ends: 655 [2021-10-08 15:49:46,133 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 10.6ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-08 15:49:46,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2021-10-08 15:49:46,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 653. [2021-10-08 15:49:46,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 645 states have (on average 3.1658914728682173) internal successors, (2042), 652 states have internal predecessors, (2042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:46,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 2042 transitions. [2021-10-08 15:49:46,161 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 2042 transitions. Word has length 4 [2021-10-08 15:49:46,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:49:46,161 INFO L470 AbstractCegarLoop]: Abstraction has 653 states and 2042 transitions. [2021-10-08 15:49:46,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:46,162 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 2042 transitions. [2021-10-08 15:49:46,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-08 15:49:46,163 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:49:46,163 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:49:46,197 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-10-08 15:49:46,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:49:46,378 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2021-10-08 15:49:46,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:49:46,380 INFO L82 PathProgramCache]: Analyzing trace with hash 421249126, now seen corresponding path program 1 times [2021-10-08 15:49:46,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:49:46,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115280399] [2021-10-08 15:49:46,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:49:46,381 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:49:46,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:49:46,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:49:46,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:49:46,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115280399] [2021-10-08 15:49:46,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115280399] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:49:46,438 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:49:46,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 15:49:46,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22301410] [2021-10-08 15:49:46,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 15:49:46,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:49:46,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 15:49:46,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:49:46,440 INFO L87 Difference]: Start difference. First operand 653 states and 2042 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) [2021-10-08 15:49:46,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:49:46,481 INFO L93 Difference]: Finished difference Result 993 states and 3192 transitions. [2021-10-08 15:49:46,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 15:49:46,482 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 [2021-10-08 15:49:46,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:49:46,491 INFO L225 Difference]: With dead ends: 993 [2021-10-08 15:49:46,492 INFO L226 Difference]: Without dead ends: 993 [2021-10-08 15:49:46,492 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:49:46,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2021-10-08 15:49:46,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 901. [2021-10-08 15:49:46,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 893 states have (on average 3.3393057110862263) internal successors, (2982), 900 states have internal predecessors, (2982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:46,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 2982 transitions. [2021-10-08 15:49:46,544 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 2982 transitions. Word has length 8 [2021-10-08 15:49:46,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:49:46,546 INFO L470 AbstractCegarLoop]: Abstraction has 901 states and 2982 transitions. [2021-10-08 15:49:46,546 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) [2021-10-08 15:49:46,547 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 2982 transitions. [2021-10-08 15:49:46,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-08 15:49:46,548 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:49:46,548 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:49:46,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-08 15:49:46,549 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2021-10-08 15:49:46,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:49:46,549 INFO L82 PathProgramCache]: Analyzing trace with hash 421249184, now seen corresponding path program 1 times [2021-10-08 15:49:46,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:49:46,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492840465] [2021-10-08 15:49:46,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:49:46,553 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:49:46,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:49:46,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:49:46,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:49:46,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492840465] [2021-10-08 15:49:46,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492840465] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:49:46,666 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:49:46,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-08 15:49:46,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524584456] [2021-10-08 15:49:46,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 15:49:46,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:49:46,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 15:49:46,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:49:46,671 INFO L87 Difference]: Start difference. First operand 901 states and 2982 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:46,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:49:46,701 INFO L93 Difference]: Finished difference Result 839 states and 2730 transitions. [2021-10-08 15:49:46,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 15:49:46,701 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-08 15:49:46,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:49:46,709 INFO L225 Difference]: With dead ends: 839 [2021-10-08 15:49:46,709 INFO L226 Difference]: Without dead ends: 839 [2021-10-08 15:49:46,710 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:49:46,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2021-10-08 15:49:46,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 839. [2021-10-08 15:49:46,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 839 states, 834 states have (on average 3.273381294964029) internal successors, (2730), 838 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:46,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 2730 transitions. [2021-10-08 15:49:46,751 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 2730 transitions. Word has length 8 [2021-10-08 15:49:46,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:49:46,751 INFO L470 AbstractCegarLoop]: Abstraction has 839 states and 2730 transitions. [2021-10-08 15:49:46,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:46,752 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 2730 transitions. [2021-10-08 15:49:46,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-08 15:49:46,753 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:49:46,753 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:49:46,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-08 15:49:46,754 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2021-10-08 15:49:46,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:49:46,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1633940596, now seen corresponding path program 1 times [2021-10-08 15:49:46,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:49:46,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972424097] [2021-10-08 15:49:46,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:49:46,755 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:49:46,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:49:46,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:49:46,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:49:46,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972424097] [2021-10-08 15:49:46,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972424097] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:49:46,802 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:49:46,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 15:49:46,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106935113] [2021-10-08 15:49:46,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 15:49:46,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:49:46,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 15:49:46,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:49:46,804 INFO L87 Difference]: Start difference. First operand 839 states and 2730 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:46,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:49:46,848 INFO L93 Difference]: Finished difference Result 1239 states and 4170 transitions. [2021-10-08 15:49:46,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 15:49:46,848 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-08 15:49:46,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:49:46,861 INFO L225 Difference]: With dead ends: 1239 [2021-10-08 15:49:46,861 INFO L226 Difference]: Without dead ends: 1239 [2021-10-08 15:49:46,864 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:49:46,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2021-10-08 15:49:46,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1167. [2021-10-08 15:49:46,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1167 states, 1162 states have (on average 3.4543889845094666) internal successors, (4014), 1166 states have internal predecessors, (4014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:46,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 4014 transitions. [2021-10-08 15:49:46,926 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 4014 transitions. Word has length 10 [2021-10-08 15:49:46,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:49:46,926 INFO L470 AbstractCegarLoop]: Abstraction has 1167 states and 4014 transitions. [2021-10-08 15:49:46,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:46,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 4014 transitions. [2021-10-08 15:49:46,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-08 15:49:46,929 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:49:46,929 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:49:46,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-08 15:49:46,929 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2021-10-08 15:49:46,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:49:46,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1633940499, now seen corresponding path program 1 times [2021-10-08 15:49:46,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:49:46,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332404340] [2021-10-08 15:49:46,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:49:46,932 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:49:46,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:49:47,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:49:47,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:49:47,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332404340] [2021-10-08 15:49:47,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332404340] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:49:47,013 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:49:47,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-08 15:49:47,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260351060] [2021-10-08 15:49:47,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 15:49:47,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:49:47,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 15:49:47,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:49:47,020 INFO L87 Difference]: Start difference. First operand 1167 states and 4014 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:47,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:49:47,050 INFO L93 Difference]: Finished difference Result 1085 states and 3670 transitions. [2021-10-08 15:49:47,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 15:49:47,051 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-08 15:49:47,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:49:47,062 INFO L225 Difference]: With dead ends: 1085 [2021-10-08 15:49:47,062 INFO L226 Difference]: Without dead ends: 1085 [2021-10-08 15:49:47,063 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:49:47,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2021-10-08 15:49:47,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 1085. [2021-10-08 15:49:47,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1085 states, 1082 states have (on average 3.391866913123845) internal successors, (3670), 1084 states have internal predecessors, (3670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:47,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 3670 transitions. [2021-10-08 15:49:47,113 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 3670 transitions. Word has length 10 [2021-10-08 15:49:47,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:49:47,117 INFO L470 AbstractCegarLoop]: Abstraction has 1085 states and 3670 transitions. [2021-10-08 15:49:47,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:47,118 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 3670 transitions. [2021-10-08 15:49:47,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-08 15:49:47,126 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:49:47,126 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:49:47,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-08 15:49:47,126 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2021-10-08 15:49:47,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:49:47,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1093560932, now seen corresponding path program 1 times [2021-10-08 15:49:47,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:49:47,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077208560] [2021-10-08 15:49:47,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:49:47,128 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:49:47,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:49:47,221 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:49:47,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:49:47,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077208560] [2021-10-08 15:49:47,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077208560] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:49:47,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765717550] [2021-10-08 15:49:47,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:49:47,222 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:49:47,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:49:47,224 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:49:47,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-08 15:49:47,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:49:47,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 15:49:47,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:49:47,369 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 15:49:47,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765717550] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:49:47,369 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 15:49:47,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2021-10-08 15:49:47,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779038846] [2021-10-08 15:49:47,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 15:49:47,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:49:47,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 15:49:47,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-08 15:49:47,371 INFO L87 Difference]: Start difference. First operand 1085 states and 3670 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:47,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:49:47,388 INFO L93 Difference]: Finished difference Result 1086 states and 3671 transitions. [2021-10-08 15:49:47,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 15:49:47,389 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 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 [2021-10-08 15:49:47,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:49:47,400 INFO L225 Difference]: With dead ends: 1086 [2021-10-08 15:49:47,400 INFO L226 Difference]: Without dead ends: 1086 [2021-10-08 15:49:47,401 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 9.4ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-08 15:49:47,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1086 states. [2021-10-08 15:49:47,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1086 to 1086. [2021-10-08 15:49:47,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1086 states, 1083 states have (on average 3.389658356417359) internal successors, (3671), 1085 states have internal predecessors, (3671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:47,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1086 states to 1086 states and 3671 transitions. [2021-10-08 15:49:47,449 INFO L78 Accepts]: Start accepts. Automaton has 1086 states and 3671 transitions. Word has length 10 [2021-10-08 15:49:47,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:49:47,449 INFO L470 AbstractCegarLoop]: Abstraction has 1086 states and 3671 transitions. [2021-10-08 15:49:47,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:47,449 INFO L276 IsEmpty]: Start isEmpty. Operand 1086 states and 3671 transitions. [2021-10-08 15:49:47,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-08 15:49:47,450 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:49:47,450 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:49:47,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-08 15:49:47,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:49:47,665 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2021-10-08 15:49:47,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:49:47,666 INFO L82 PathProgramCache]: Analyzing trace with hash 707372340, now seen corresponding path program 1 times [2021-10-08 15:49:47,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:49:47,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261411456] [2021-10-08 15:49:47,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:49:47,668 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:49:47,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:49:47,706 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 15:49:47,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:49:47,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261411456] [2021-10-08 15:49:47,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261411456] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:49:47,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13901818] [2021-10-08 15:49:47,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:49:47,707 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:49:47,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:49:47,708 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:49:47,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-08 15:49:47,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:49:47,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 15:49:47,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:49:47,836 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 15:49:47,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13901818] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:49:47,837 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 15:49:47,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-10-08 15:49:47,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824230300] [2021-10-08 15:49:47,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 15:49:47,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:49:47,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 15:49:47,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 15:49:47,840 INFO L87 Difference]: Start difference. First operand 1086 states and 3671 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 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) [2021-10-08 15:49:47,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:49:47,895 INFO L93 Difference]: Finished difference Result 1650 states and 5421 transitions. [2021-10-08 15:49:47,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 15:49:47,897 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 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 [2021-10-08 15:49:47,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:49:47,914 INFO L225 Difference]: With dead ends: 1650 [2021-10-08 15:49:47,914 INFO L226 Difference]: Without dead ends: 1650 [2021-10-08 15:49:47,916 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 15:49:47,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1650 states. [2021-10-08 15:49:47,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1650 to 1406. [2021-10-08 15:49:47,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1406 states, 1403 states have (on average 3.4561653599429794) internal successors, (4849), 1405 states have internal predecessors, (4849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:47,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 4849 transitions. [2021-10-08 15:49:47,981 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 4849 transitions. Word has length 11 [2021-10-08 15:49:47,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:49:47,982 INFO L470 AbstractCegarLoop]: Abstraction has 1406 states and 4849 transitions. [2021-10-08 15:49:47,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 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) [2021-10-08 15:49:47,982 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 4849 transitions. [2021-10-08 15:49:47,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-08 15:49:47,984 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:49:47,984 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:49:48,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-08 15:49:48,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:49:48,200 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2021-10-08 15:49:48,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:49:48,201 INFO L82 PathProgramCache]: Analyzing trace with hash -18817892, now seen corresponding path program 1 times [2021-10-08 15:49:48,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:49:48,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741563188] [2021-10-08 15:49:48,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:49:48,202 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:49:48,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:49:48,236 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 15:49:48,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:49:48,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741563188] [2021-10-08 15:49:48,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741563188] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:49:48,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886191502] [2021-10-08 15:49:48,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:49:48,238 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:49:48,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:49:48,239 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:49:48,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-08 15:49:48,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:49:48,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 15:49:48,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:49:48,368 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 15:49:48,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886191502] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:49:48,369 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 15:49:48,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 3] total 5 [2021-10-08 15:49:48,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521354314] [2021-10-08 15:49:48,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 15:49:48,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:49:48,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 15:49:48,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-08 15:49:48,371 INFO L87 Difference]: Start difference. First operand 1406 states and 4849 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:48,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:49:48,470 INFO L93 Difference]: Finished difference Result 2118 states and 7267 transitions. [2021-10-08 15:49:48,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 15:49:48,471 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 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 13 [2021-10-08 15:49:48,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:49:48,492 INFO L225 Difference]: With dead ends: 2118 [2021-10-08 15:49:48,492 INFO L226 Difference]: Without dead ends: 1956 [2021-10-08 15:49:48,492 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 29.0ms TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-10-08 15:49:48,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1956 states. [2021-10-08 15:49:48,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1956 to 804. [2021-10-08 15:49:48,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 804 states, 803 states have (on average 3.261519302615193) internal successors, (2619), 803 states have internal predecessors, (2619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:48,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 2619 transitions. [2021-10-08 15:49:48,542 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 2619 transitions. Word has length 13 [2021-10-08 15:49:48,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:49:48,543 INFO L470 AbstractCegarLoop]: Abstraction has 804 states and 2619 transitions. [2021-10-08 15:49:48,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:48,543 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 2619 transitions. [2021-10-08 15:49:48,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-08 15:49:48,544 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:49:48,544 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:49:48,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-08 15:49:48,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-08 15:49:48,760 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2021-10-08 15:49:48,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:49:48,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1180062642, now seen corresponding path program 2 times [2021-10-08 15:49:48,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:49:48,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053801453] [2021-10-08 15:49:48,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:49:48,761 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:49:48,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:49:48,839 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-08 15:49:48,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:49:48,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053801453] [2021-10-08 15:49:48,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053801453] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:49:48,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699300022] [2021-10-08 15:49:48,840 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 15:49:48,841 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:49:48,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:49:48,842 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:49:48,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-08 15:49:48,918 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 15:49:48,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 15:49:48,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 15:49:48,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:49:48,975 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-08 15:49:48,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699300022] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:49:48,975 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 15:49:48,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2021-10-08 15:49:48,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617537025] [2021-10-08 15:49:48,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 15:49:48,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:49:48,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 15:49:48,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-08 15:49:48,977 INFO L87 Difference]: Start difference. First operand 804 states and 2619 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2021-10-08 15:49:49,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:49:49,013 INFO L93 Difference]: Finished difference Result 754 states and 2465 transitions. [2021-10-08 15:49:49,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 15:49:49,014 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 13 [2021-10-08 15:49:49,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:49:49,014 INFO L225 Difference]: With dead ends: 754 [2021-10-08 15:49:49,014 INFO L226 Difference]: Without dead ends: 0 [2021-10-08 15:49:49,014 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 15:49:49,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-08 15:49:49,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-08 15:49:49,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:49,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-08 15:49:49,015 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-10-08 15:49:49,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:49:49,016 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-08 15:49:49,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2021-10-08 15:49:49,016 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-08 15:49:49,016 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-08 15:49:49,019 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 15:49:49,020 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 15:49:49,020 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 15:49:49,020 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 15:49:49,020 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 15:49:49,021 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 15:49:49,021 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-08 15:49:49,021 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-08 15:49:49,021 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-08 15:49:49,021 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 15:49:49,021 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 15:49:49,022 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 15:49:49,022 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 15:49:49,059 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 [2021-10-08 15:49:49,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:49:49,245 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-08 15:49:49,245 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-08 15:49:49,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.10 03:49:49 BasicIcfg [2021-10-08 15:49:49,248 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-08 15:49:49,248 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-08 15:49:49,248 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-08 15:49:49,248 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-08 15:49:49,249 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 03:49:33" (3/4) ... [2021-10-08 15:49:49,252 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-08 15:49:49,260 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-08 15:49:49,261 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-08 15:49:49,261 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-10-08 15:49:49,267 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2021-10-08 15:49:49,267 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-08 15:49:49,268 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-08 15:49:49,268 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-08 15:49:49,324 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/weaver/parallel-min-max-1.wvr.c-witness.graphml [2021-10-08 15:49:49,324 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-08 15:49:49,326 INFO L168 Benchmark]: Toolchain (without parser) took 17414.48 ms. Allocated memory was 153.1 MB in the beginning and 204.5 MB in the end (delta: 51.4 MB). Free memory was 127.9 MB in the beginning and 156.0 MB in the end (delta: -28.1 MB). Peak memory consumption was 24.4 MB. Max. memory is 8.0 GB. [2021-10-08 15:49:49,326 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 153.1 MB. Free memory is still 125.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-08 15:49:49,327 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.04 ms. Allocated memory is still 153.1 MB. Free memory was 127.4 MB in the beginning and 116.3 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-10-08 15:49:49,327 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.48 ms. Allocated memory is still 153.1 MB. Free memory was 116.3 MB in the beginning and 114.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-08 15:49:49,328 INFO L168 Benchmark]: Boogie Preprocessor took 47.80 ms. Allocated memory is still 153.1 MB. Free memory was 114.3 MB in the beginning and 112.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-08 15:49:49,328 INFO L168 Benchmark]: RCFGBuilder took 690.17 ms. Allocated memory is still 153.1 MB. Free memory was 112.7 MB in the beginning and 96.3 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-10-08 15:49:49,328 INFO L168 Benchmark]: TraceAbstraction took 16205.90 ms. Allocated memory was 153.1 MB in the beginning and 204.5 MB in the end (delta: 51.4 MB). Free memory was 95.9 MB in the beginning and 160.2 MB in the end (delta: -64.3 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-10-08 15:49:49,329 INFO L168 Benchmark]: Witness Printer took 75.85 ms. Allocated memory is still 204.5 MB. Free memory was 160.2 MB in the beginning and 156.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-10-08 15:49:49,331 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 153.1 MB. Free memory is still 125.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 322.04 ms. Allocated memory is still 153.1 MB. Free memory was 127.4 MB in the beginning and 116.3 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 53.48 ms. Allocated memory is still 153.1 MB. Free memory was 116.3 MB in the beginning and 114.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 47.80 ms. Allocated memory is still 153.1 MB. Free memory was 114.3 MB in the beginning and 112.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 690.17 ms. Allocated memory is still 153.1 MB. Free memory was 112.7 MB in the beginning and 96.3 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 16205.90 ms. Allocated memory was 153.1 MB in the beginning and 204.5 MB in the end (delta: 51.4 MB). Free memory was 95.9 MB in the beginning and 160.2 MB in the end (delta: -64.3 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 75.85 ms. Allocated memory is still 204.5 MB. Free memory was 160.2 MB in the beginning and 156.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10722.8ms, 195 PlacesBefore, 48 PlacesAfterwards, 200 TransitionsBefore, 43 TransitionsAfterwards, 2790 CoEnabledTransitionPairs, 8 FixpointIterations, 115 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 29 TrivialYvCompositions, 9 ConcurrentYvCompositions, 10 ChoiceCompositions, 205 TotalNumberOfCompositions, 6233 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4274, positive: 4098, positive conditional: 0, positive unconditional: 4098, negative: 176, negative conditional: 0, negative unconditional: 176, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1954, positive: 1908, positive conditional: 0, positive unconditional: 1908, negative: 46, negative conditional: 0, negative unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1954, positive: 1905, positive conditional: 0, positive unconditional: 1905, negative: 49, negative conditional: 0, negative unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 49, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 46, negative conditional: 0, negative unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 115, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 109, negative conditional: 0, negative unconditional: 109, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4274, positive: 2190, positive conditional: 0, positive unconditional: 2190, negative: 130, negative conditional: 0, negative unconditional: 130, unknown: 1954, unknown conditional: 0, unknown unconditional: 1954] , Statistics on independence cache: Total cache size (in pairs): 290, Positive cache size: 272, Positive conditional cache size: 0, Positive unconditional cache size: 272, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 52]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 52]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 63]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 63]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 111]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 111]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 237 locations, 13 error locations. Started 1 CEGAR loops. OverallTime: 15903.7ms, OverallIterations: 12, TraceHistogramMax: 3, EmptinessCheckTime: 30.3ms, AutomataDifference: 862.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10874.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 369 SDtfs, 634 SDslu, 317 SDs, 0 SdLazy, 126 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 213.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 78 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 93.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1406occurred in iteration=10, InterpolantAutomatonStates: 43, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 641.0ms AutomataMinimizationTime, 12 MinimizatonAttempts, 4166 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 139.1ms SsaConstructionTime, 386.1ms SatisfiabilityAnalysisTime, 759.0ms InterpolantComputationTime, 152 NumberOfCodeBlocks, 145 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 133 ConstructedInterpolants, 0 QuantifiedInterpolants, 401 SizeOfPredicates, 8 NumberOfNonLiveVariables, 778 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 19 InterpolantComputations, 8 PerfectInterpolantSequences, 21/40 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-08 15:49:49,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...