/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Overflow-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/weaver/popl20-two-queue.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-07 15:10:44,872 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-07 15:10:44,874 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-07 15:10:44,908 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-07 15:10:44,979 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-10-07 15:10:45,035 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-07 15:10:45,035 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-07 15:10:45,035 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-07 15:10:45,036 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-07 15:10:45,037 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-07 15:10:45,037 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-07 15:10:45,037 INFO L138 SettingsManager]: * Use SBE=true [2021-10-07 15:10:45,038 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-07 15:10:45,038 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-07 15:10:45,038 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-07 15:10:45,038 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-07 15:10:45,039 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-07 15:10:45,039 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-07 15:10:45,039 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-07 15:10:45,039 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-07 15:10:45,040 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-07 15:10:45,040 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-07 15:10:45,040 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-07 15:10:45,040 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-07 15:10:45,040 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-07 15:10:45,041 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-07 15:10:45,041 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-07 15:10:45,041 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-07 15:10:45,041 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-07 15:10:45,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 15:10:45,042 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-07 15:10:45,042 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-07 15:10:45,042 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-07 15:10:45,042 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-07 15:10:45,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-07 15:10:45,043 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-07 15:10:45,043 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-07 15:10:45,043 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-07 15:10:45,430 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-07 15:10:45,462 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-07 15:10:45,466 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-07 15:10:45,467 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-07 15:10:45,468 INFO L275 PluginConnector]: CDTParser initialized [2021-10-07 15:10:45,469 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-two-queue.wvr.c [2021-10-07 15:10:45,558 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/096189676/b6e724c962e34c66a56d0f02433d8d30/FLAG99669a9c1 [2021-10-07 15:10:46,322 INFO L306 CDTParser]: Found 1 translation units. [2021-10-07 15:10:46,323 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-two-queue.wvr.c [2021-10-07 15:10:46,333 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/096189676/b6e724c962e34c66a56d0f02433d8d30/FLAG99669a9c1 [2021-10-07 15:10:46,648 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/096189676/b6e724c962e34c66a56d0f02433d8d30 [2021-10-07 15:10:46,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-07 15:10:46,660 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-07 15:10:46,662 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-07 15:10:46,662 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-07 15:10:46,668 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-07 15:10:46,670 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:10:46" (1/1) ... [2021-10-07 15:10:46,672 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ba20a3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:10:46, skipping insertion in model container [2021-10-07 15:10:46,672 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:10:46" (1/1) ... [2021-10-07 15:10:46,682 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-07 15:10:46,712 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 15:10:46,894 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-two-queue.wvr.c[2980,2993] [2021-10-07 15:10:46,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:10:46,911 INFO L203 MainTranslator]: Completed pre-run [2021-10-07 15:10:46,937 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-two-queue.wvr.c[2980,2993] [2021-10-07 15:10:46,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:10:46,959 INFO L208 MainTranslator]: Completed translation [2021-10-07 15:10:46,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:10:46 WrapperNode [2021-10-07 15:10:46,959 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-07 15:10:46,961 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-07 15:10:46,961 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-07 15:10:46,961 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-07 15:10:46,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:10:46" (1/1) ... [2021-10-07 15:10:46,980 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:10:46" (1/1) ... [2021-10-07 15:10:47,018 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-07 15:10:47,019 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-07 15:10:47,019 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-07 15:10:47,020 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-07 15:10:47,031 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:10:46" (1/1) ... [2021-10-07 15:10:47,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:10:46" (1/1) ... [2021-10-07 15:10:47,036 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:10:46" (1/1) ... [2021-10-07 15:10:47,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:10:46" (1/1) ... [2021-10-07 15:10:47,046 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:10:46" (1/1) ... [2021-10-07 15:10:47,052 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:10:46" (1/1) ... [2021-10-07 15:10:47,055 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:10:46" (1/1) ... [2021-10-07 15:10:47,059 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-07 15:10:47,060 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-07 15:10:47,061 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-07 15:10:47,061 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-07 15:10:47,062 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:10:46" (1/1) ... [2021-10-07 15:10:47,083 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 15:10:47,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:10:47,120 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-07 15:10:47,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-07 15:10:47,198 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-07 15:10:47,198 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-07 15:10:47,199 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-07 15:10:47,200 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-07 15:10:47,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-07 15:10:47,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-07 15:10:47,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-07 15:10:47,201 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-07 15:10:47,201 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-07 15:10:47,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-07 15:10:47,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-07 15:10:47,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-07 15:10:47,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-07 15:10:47,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-07 15:10:47,209 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-07 15:10:48,242 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-07 15:10:48,243 INFO L299 CfgBuilder]: Removed 34 assume(true) statements. [2021-10-07 15:10:48,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:10:48 BoogieIcfgContainer [2021-10-07 15:10:48,246 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-07 15:10:48,251 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-07 15:10:48,251 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-07 15:10:48,256 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-07 15:10:48,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 03:10:46" (1/3) ... [2021-10-07 15:10:48,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6700d4ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:10:48, skipping insertion in model container [2021-10-07 15:10:48,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:10:46" (2/3) ... [2021-10-07 15:10:48,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6700d4ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:10:48, skipping insertion in model container [2021-10-07 15:10:48,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:10:48" (3/3) ... [2021-10-07 15:10:48,260 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-two-queue.wvr.c [2021-10-07 15:10:48,273 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-07 15:10:48,273 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-07 15:10:48,274 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-10-07 15:10:48,274 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-07 15:10:48,346 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,346 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,346 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,346 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,347 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,347 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,347 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,347 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,347 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,348 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,348 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,348 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,348 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,348 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,349 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,349 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,349 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,349 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,349 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,350 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,350 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,350 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,350 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,351 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,351 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,351 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,353 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,353 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,354 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,355 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,355 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,355 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,355 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,356 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,356 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,356 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,356 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,356 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,357 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,357 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,357 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,357 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,357 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,357 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,358 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,358 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,358 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,358 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,358 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,359 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,359 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,359 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,359 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,360 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,360 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,361 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,361 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,361 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,361 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,361 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,362 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,362 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,363 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,363 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,363 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,364 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,367 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,367 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,367 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,368 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,368 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,368 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,369 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,369 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,369 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,370 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,370 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,371 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,371 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,371 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,372 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,372 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,372 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,372 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,372 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,372 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,373 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,373 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,373 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,373 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,374 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,374 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,375 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,376 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,377 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,381 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,386 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,387 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,388 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,389 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,389 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,389 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,389 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,389 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,390 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,390 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,390 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,390 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,390 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,390 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,391 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,391 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,391 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,391 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,391 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,392 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,392 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,392 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,392 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,393 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,393 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,393 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,393 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,393 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,394 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,394 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,394 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,394 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,394 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,394 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,395 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,395 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,402 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,402 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,403 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,403 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,403 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,403 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,403 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,403 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,404 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,406 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,406 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,406 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,407 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,407 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,407 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,407 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,407 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,407 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:10:48,414 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-07 15:10:48,493 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-07 15:10:48,508 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-07 15:10:48,509 INFO L340 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2021-10-07 15:10:48,536 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-07 15:10:48,548 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 177 places, 183 transitions, 382 flow [2021-10-07 15:10:48,553 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 177 places, 183 transitions, 382 flow [2021-10-07 15:10:48,555 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 177 places, 183 transitions, 382 flow [2021-10-07 15:10:48,683 INFO L129 PetriNetUnfolder]: 13/181 cut-off events. [2021-10-07 15:10:48,683 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-07 15:10:48,689 INFO L84 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 181 events. 13/181 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 163 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 142. Up to 2 conditions per place. [2021-10-07 15:10:48,695 INFO L116 LiptonReduction]: Number of co-enabled transitions 1188 [2021-10-07 15:10:58,097 INFO L131 LiptonReduction]: Checked pairs total: 3168 [2021-10-07 15:10:58,097 INFO L133 LiptonReduction]: Total number of compositions: 204 [2021-10-07 15:10:58,109 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 37 transitions, 90 flow [2021-10-07 15:10:58,153 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 202 states, 150 states have (on average 3.1866666666666665) internal successors, (478), 201 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:10:58,159 INFO L276 IsEmpty]: Start isEmpty. Operand has 202 states, 150 states have (on average 3.1866666666666665) internal successors, (478), 201 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:10:58,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-07 15:10:58,167 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:10:58,168 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-07 15:10:58,168 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:10:58,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:10:58,176 INFO L82 PathProgramCache]: Analyzing trace with hash 27243, now seen corresponding path program 1 times [2021-10-07 15:10:58,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:10:58,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077235790] [2021-10-07 15:10:58,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:10:58,199 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:10:58,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:10:58,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:10:58,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:10:58,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077235790] [2021-10-07 15:10:58,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077235790] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:10:58,491 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:10:58,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-07 15:10:58,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701223450] [2021-10-07 15:10:58,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:10:58,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:10:58,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:10:58,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:10:58,525 INFO L87 Difference]: Start difference. First operand has 202 states, 150 states have (on average 3.1866666666666665) internal successors, (478), 201 states have internal predecessors, (478), 0 states have call successors, (0), 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) [2021-10-07 15:10:58,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:10:58,604 INFO L93 Difference]: Finished difference Result 255 states and 599 transitions. [2021-10-07 15:10:58,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:10:58,606 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 [2021-10-07 15:10:58,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:10:58,626 INFO L225 Difference]: With dead ends: 255 [2021-10-07 15:10:58,627 INFO L226 Difference]: Without dead ends: 255 [2021-10-07 15:10:58,628 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:10:58,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-10-07 15:10:58,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 132. [2021-10-07 15:10:58,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 104 states have (on average 2.9423076923076925) internal successors, (306), 131 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:10:58,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 306 transitions. [2021-10-07 15:10:58,679 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 306 transitions. Word has length 2 [2021-10-07 15:10:58,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:10:58,680 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 306 transitions. [2021-10-07 15:10:58,680 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) [2021-10-07 15:10:58,680 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 306 transitions. [2021-10-07 15:10:58,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 15:10:58,680 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:10:58,681 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 15:10:58,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-07 15:10:58,681 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:10:58,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:10:58,682 INFO L82 PathProgramCache]: Analyzing trace with hash 845984, now seen corresponding path program 1 times [2021-10-07 15:10:58,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:10:58,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19647150] [2021-10-07 15:10:58,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:10:58,683 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:10:58,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:10:58,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:10:58,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:10:58,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19647150] [2021-10-07 15:10:58,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19647150] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:58,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366418814] [2021-10-07 15:10:58,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:10:58,748 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:10:58,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:10:58,750 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) [2021-10-07 15:10:58,760 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 [2021-10-07 15:10:58,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:10:58,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 15:10:58,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:10:58,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:10:58,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366418814] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:58,915 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:10:58,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 3 [2021-10-07 15:10:58,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113351097] [2021-10-07 15:10:58,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 15:10:58,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:10:58,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 15:10:58,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:10:58,919 INFO L87 Difference]: Start difference. First operand 132 states and 306 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) [2021-10-07 15:10:58,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:10:58,999 INFO L93 Difference]: Finished difference Result 380 states and 898 transitions. [2021-10-07 15:10:59,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 15:10:59,000 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 [2021-10-07 15:10:59,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:10:59,009 INFO L225 Difference]: With dead ends: 380 [2021-10-07 15:10:59,010 INFO L226 Difference]: Without dead ends: 380 [2021-10-07 15:10:59,010 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.3ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:10:59,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2021-10-07 15:10:59,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 134. [2021-10-07 15:10:59,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 106 states have (on average 2.943396226415094) internal successors, (312), 133 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:10:59,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 312 transitions. [2021-10-07 15:10:59,056 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 312 transitions. Word has length 3 [2021-10-07 15:10:59,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:10:59,056 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 312 transitions. [2021-10-07 15:10:59,056 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) [2021-10-07 15:10:59,056 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 312 transitions. [2021-10-07 15:10:59,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 15:10:59,057 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:10:59,058 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 15:10:59,098 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 [2021-10-07 15:10:59,259 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 [2021-10-07 15:10:59,260 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:10:59,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:10:59,261 INFO L82 PathProgramCache]: Analyzing trace with hash 845985, now seen corresponding path program 1 times [2021-10-07 15:10:59,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:10:59,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526855485] [2021-10-07 15:10:59,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:10:59,263 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:10:59,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:10:59,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:10:59,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:10:59,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526855485] [2021-10-07 15:10:59,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526855485] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:59,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148399988] [2021-10-07 15:10:59,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:10:59,351 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:10:59,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:10:59,353 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) [2021-10-07 15:10:59,372 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 [2021-10-07 15:10:59,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:10:59,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 15:10:59,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:10:59,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:10:59,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148399988] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:10:59,474 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:10:59,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2021-10-07 15:10:59,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409820267] [2021-10-07 15:10:59,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:10:59,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:10:59,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:10:59,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:10:59,477 INFO L87 Difference]: Start difference. First operand 134 states and 312 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) [2021-10-07 15:10:59,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:10:59,530 INFO L93 Difference]: Finished difference Result 255 states and 601 transitions. [2021-10-07 15:10:59,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:10:59,531 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 [2021-10-07 15:10:59,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:10:59,534 INFO L225 Difference]: With dead ends: 255 [2021-10-07 15:10:59,537 INFO L226 Difference]: Without dead ends: 255 [2021-10-07 15:10:59,538 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:10:59,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-10-07 15:10:59,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 132. [2021-10-07 15:10:59,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 106 states have (on average 2.9056603773584904) internal successors, (308), 131 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:10:59,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 308 transitions. [2021-10-07 15:10:59,569 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 308 transitions. Word has length 3 [2021-10-07 15:10:59,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:10:59,570 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 308 transitions. [2021-10-07 15:10:59,570 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) [2021-10-07 15:10:59,570 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 308 transitions. [2021-10-07 15:10:59,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-07 15:10:59,572 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:10:59,573 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-07 15:10:59,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-07 15:10:59,787 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 [2021-10-07 15:10:59,788 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:10:59,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:10:59,789 INFO L82 PathProgramCache]: Analyzing trace with hash 26226955, now seen corresponding path program 2 times [2021-10-07 15:10:59,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:10:59,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289354844] [2021-10-07 15:10:59,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:10:59,790 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:10:59,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:10:59,895 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:10:59,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:10:59,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289354844] [2021-10-07 15:10:59,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289354844] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:59,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195212597] [2021-10-07 15:10:59,897 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:10:59,897 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:10:59,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:10:59,903 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) [2021-10-07 15:10:59,913 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 [2021-10-07 15:10:59,967 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 15:10:59,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:10:59,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 15:10:59,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:10:59,995 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:10:59,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195212597] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:10:59,995 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:10:59,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2021-10-07 15:10:59,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990763139] [2021-10-07 15:10:59,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:10:59,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:10:59,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:10:59,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:10:59,998 INFO L87 Difference]: Start difference. First operand 132 states and 308 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) [2021-10-07 15:11:00,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:00,026 INFO L93 Difference]: Finished difference Result 131 states and 307 transitions. [2021-10-07 15:11:00,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:11:00,028 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 [2021-10-07 15:11:00,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:00,033 INFO L225 Difference]: With dead ends: 131 [2021-10-07 15:11:00,034 INFO L226 Difference]: Without dead ends: 131 [2021-10-07 15:11:00,035 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 11.6ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:11:00,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-10-07 15:11:00,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 129. [2021-10-07 15:11:00,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 104 states have (on average 2.9134615384615383) internal successors, (303), 128 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:00,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 303 transitions. [2021-10-07 15:11:00,057 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 303 transitions. Word has length 4 [2021-10-07 15:11:00,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:00,058 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 303 transitions. [2021-10-07 15:11:00,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:00,059 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 303 transitions. [2021-10-07 15:11:00,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 15:11:00,060 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:00,060 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 15:11:00,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-07 15:11:00,260 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 [2021-10-07 15:11:00,262 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:11:00,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:00,263 INFO L82 PathProgramCache]: Analyzing trace with hash 813904095, now seen corresponding path program 1 times [2021-10-07 15:11:00,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:00,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080126975] [2021-10-07 15:11:00,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:00,264 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:00,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:00,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:11:00,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:00,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080126975] [2021-10-07 15:11:00,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080126975] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:11:00,337 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:11:00,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-07 15:11:00,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807016042] [2021-10-07 15:11:00,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:11:00,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:00,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:11:00,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:11:00,339 INFO L87 Difference]: Start difference. First operand 129 states and 303 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:00,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:00,386 INFO L93 Difference]: Finished difference Result 154 states and 343 transitions. [2021-10-07 15:11:00,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:11:00,387 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-07 15:11:00,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:00,388 INFO L225 Difference]: With dead ends: 154 [2021-10-07 15:11:00,388 INFO L226 Difference]: Without dead ends: 146 [2021-10-07 15:11:00,389 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:11:00,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-10-07 15:11:00,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 142. [2021-10-07 15:11:00,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 117 states have (on average 2.7777777777777777) internal successors, (325), 141 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:00,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 325 transitions. [2021-10-07 15:11:00,399 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 325 transitions. Word has length 5 [2021-10-07 15:11:00,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:00,399 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 325 transitions. [2021-10-07 15:11:00,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:00,400 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 325 transitions. [2021-10-07 15:11:00,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 15:11:00,400 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:00,400 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2021-10-07 15:11:00,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-07 15:11:00,401 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:11:00,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:00,401 INFO L82 PathProgramCache]: Analyzing trace with hash 813901983, now seen corresponding path program 1 times [2021-10-07 15:11:00,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:00,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457934284] [2021-10-07 15:11:00,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:00,402 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:00,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:00,494 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:11:00,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:00,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457934284] [2021-10-07 15:11:00,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457934284] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:00,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455043473] [2021-10-07 15:11:00,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:00,495 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:00,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:11:00,496 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) [2021-10-07 15:11:00,497 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 [2021-10-07 15:11:00,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:00,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 15:11:00,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:11:00,591 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:11:00,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455043473] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:00,592 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:11:00,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-10-07 15:11:00,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115996141] [2021-10-07 15:11:00,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:11:00,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:00,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:11:00,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:11:00,594 INFO L87 Difference]: Start difference. First operand 142 states and 325 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:00,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:00,637 INFO L93 Difference]: Finished difference Result 396 states and 922 transitions. [2021-10-07 15:11:00,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 15:11:00,638 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-07 15:11:00,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:00,643 INFO L225 Difference]: With dead ends: 396 [2021-10-07 15:11:00,643 INFO L226 Difference]: Without dead ends: 396 [2021-10-07 15:11:00,643 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 11.5ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:11:00,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2021-10-07 15:11:00,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 143. [2021-10-07 15:11:00,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 118 states have (on average 2.7711864406779663) internal successors, (327), 142 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:00,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 327 transitions. [2021-10-07 15:11:00,656 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 327 transitions. Word has length 5 [2021-10-07 15:11:00,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:00,656 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 327 transitions. [2021-10-07 15:11:00,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:00,657 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 327 transitions. [2021-10-07 15:11:00,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-07 15:11:00,657 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:00,657 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-07 15:11:00,695 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 [2021-10-07 15:11:00,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:00,872 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:11:00,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:00,873 INFO L82 PathProgramCache]: Analyzing trace with hash -538838589, now seen corresponding path program 1 times [2021-10-07 15:11:00,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:00,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246387136] [2021-10-07 15:11:00,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:00,874 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:00,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:00,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:11:00,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:00,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246387136] [2021-10-07 15:11:00,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246387136] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:00,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351121239] [2021-10-07 15:11:00,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:00,930 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:00,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:11:00,931 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) [2021-10-07 15:11:00,940 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 [2021-10-07 15:11:00,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:00,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 15:11:00,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:11:01,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:11:01,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351121239] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:11:01,020 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:11:01,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2021-10-07 15:11:01,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373105555] [2021-10-07 15:11:01,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:11:01,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:01,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:11:01,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:11:01,022 INFO L87 Difference]: Start difference. First operand 143 states and 327 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:01,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:01,036 INFO L93 Difference]: Finished difference Result 113 states and 254 transitions. [2021-10-07 15:11:01,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:11:01,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-07 15:11:01,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:01,038 INFO L225 Difference]: With dead ends: 113 [2021-10-07 15:11:01,038 INFO L226 Difference]: Without dead ends: 113 [2021-10-07 15:11:01,039 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 14.5ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:11:01,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-10-07 15:11:01,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2021-10-07 15:11:01,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 97 states have (on average 2.618556701030928) internal successors, (254), 112 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:01,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 254 transitions. [2021-10-07 15:11:01,044 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 254 transitions. Word has length 6 [2021-10-07 15:11:01,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:01,045 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 254 transitions. [2021-10-07 15:11:01,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:01,045 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 254 transitions. [2021-10-07 15:11:01,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-07 15:11:01,046 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:01,046 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1] [2021-10-07 15:11:01,088 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 [2021-10-07 15:11:01,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:01,261 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:11:01,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:01,262 INFO L82 PathProgramCache]: Analyzing trace with hash -538840701, now seen corresponding path program 2 times [2021-10-07 15:11:01,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:01,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538625765] [2021-10-07 15:11:01,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:01,263 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:01,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:01,340 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:11:01,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:01,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538625765] [2021-10-07 15:11:01,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538625765] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:01,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424938829] [2021-10-07 15:11:01,341 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:11:01,341 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:01,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:11:01,342 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) [2021-10-07 15:11:01,362 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 [2021-10-07 15:11:01,401 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 15:11:01,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:11:01,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 15:11:01,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:11:01,435 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:11:01,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424938829] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:11:01,436 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:11:01,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2021-10-07 15:11:01,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443237265] [2021-10-07 15:11:01,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:11:01,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:01,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:11:01,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:11:01,437 INFO L87 Difference]: Start difference. First operand 113 states and 254 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:01,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:01,471 INFO L93 Difference]: Finished difference Result 112 states and 253 transitions. [2021-10-07 15:11:01,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:11:01,472 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-07 15:11:01,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:01,473 INFO L225 Difference]: With dead ends: 112 [2021-10-07 15:11:01,473 INFO L226 Difference]: Without dead ends: 112 [2021-10-07 15:11:01,473 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 29.5ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-07 15:11:01,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-10-07 15:11:01,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 110. [2021-10-07 15:11:01,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 95 states have (on average 2.6210526315789475) internal successors, (249), 109 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:01,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 249 transitions. [2021-10-07 15:11:01,478 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 249 transitions. Word has length 6 [2021-10-07 15:11:01,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:01,479 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 249 transitions. [2021-10-07 15:11:01,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:01,479 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 249 transitions. [2021-10-07 15:11:01,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 15:11:01,480 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:01,480 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:11:01,518 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 [2021-10-07 15:11:01,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:01,694 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:11:01,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:01,695 INFO L82 PathProgramCache]: Analyzing trace with hash 477899472, now seen corresponding path program 1 times [2021-10-07 15:11:01,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:01,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573794923] [2021-10-07 15:11:01,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:01,696 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:01,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:01,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:11:01,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:01,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573794923] [2021-10-07 15:11:01,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573794923] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:11:01,769 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:11:01,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-07 15:11:01,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830484020] [2021-10-07 15:11:01,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:11:01,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:01,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:11:01,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:11:01,771 INFO L87 Difference]: Start difference. First operand 110 states and 249 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:01,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:01,815 INFO L93 Difference]: Finished difference Result 143 states and 296 transitions. [2021-10-07 15:11:01,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 15:11:01,815 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-07 15:11:01,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:01,817 INFO L225 Difference]: With dead ends: 143 [2021-10-07 15:11:01,817 INFO L226 Difference]: Without dead ends: 111 [2021-10-07 15:11:01,817 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:11:01,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-10-07 15:11:01,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2021-10-07 15:11:01,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 96 states have (on average 2.6041666666666665) internal successors, (250), 110 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:01,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 250 transitions. [2021-10-07 15:11:01,822 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 250 transitions. Word has length 7 [2021-10-07 15:11:01,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:01,823 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 250 transitions. [2021-10-07 15:11:01,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:01,823 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 250 transitions. [2021-10-07 15:11:01,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 15:11:01,824 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:01,824 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:11:01,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-07 15:11:01,824 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:11:01,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:01,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1593883205, now seen corresponding path program 1 times [2021-10-07 15:11:01,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:01,825 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727930102] [2021-10-07 15:11:01,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:01,825 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:01,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:01,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:11:01,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:01,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727930102] [2021-10-07 15:11:01,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727930102] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:01,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101074129] [2021-10-07 15:11:01,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:01,872 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:01,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:11:01,873 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) [2021-10-07 15:11:01,898 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 [2021-10-07 15:11:01,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:01,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 15:11:01,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:11:01,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:11:01,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101074129] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:11:01,987 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:11:01,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2021-10-07 15:11:01,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911134090] [2021-10-07 15:11:01,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:11:01,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:01,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:11:01,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:11:01,992 INFO L87 Difference]: Start difference. First operand 111 states and 250 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) [2021-10-07 15:11:02,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:02,004 INFO L93 Difference]: Finished difference Result 83 states and 178 transitions. [2021-10-07 15:11:02,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:11:02,005 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 [2021-10-07 15:11:02,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:02,006 INFO L225 Difference]: With dead ends: 83 [2021-10-07 15:11:02,006 INFO L226 Difference]: Without dead ends: 72 [2021-10-07 15:11:02,006 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 13.3ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:11:02,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-10-07 15:11:02,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-10-07 15:11:02,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 64 states have (on average 2.5625) internal successors, (164), 71 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:02,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 164 transitions. [2021-10-07 15:11:02,010 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 164 transitions. Word has length 8 [2021-10-07 15:11:02,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:02,010 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 164 transitions. [2021-10-07 15:11:02,010 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) [2021-10-07 15:11:02,011 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 164 transitions. [2021-10-07 15:11:02,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 15:11:02,012 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:02,012 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:11:02,046 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 [2021-10-07 15:11:02,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-07 15:11:02,227 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:11:02,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:02,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1595906997, now seen corresponding path program 1 times [2021-10-07 15:11:02,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:02,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949882955] [2021-10-07 15:11:02,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:02,229 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:02,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:02,300 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 15:11:02,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:02,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949882955] [2021-10-07 15:11:02,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949882955] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:11:02,301 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:11:02,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-07 15:11:02,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509513259] [2021-10-07 15:11:02,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:11:02,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:02,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:11:02,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:11:02,303 INFO L87 Difference]: Start difference. First operand 72 states and 164 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) [2021-10-07 15:11:02,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:02,315 INFO L93 Difference]: Finished difference Result 80 states and 179 transitions. [2021-10-07 15:11:02,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:11:02,316 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 [2021-10-07 15:11:02,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:02,317 INFO L225 Difference]: With dead ends: 80 [2021-10-07 15:11:02,317 INFO L226 Difference]: Without dead ends: 76 [2021-10-07 15:11:02,317 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:11:02,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-10-07 15:11:02,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 72. [2021-10-07 15:11:02,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 64 states have (on average 2.5625) internal successors, (164), 71 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:02,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 164 transitions. [2021-10-07 15:11:02,321 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 164 transitions. Word has length 8 [2021-10-07 15:11:02,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:02,321 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 164 transitions. [2021-10-07 15:11:02,321 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) [2021-10-07 15:11:02,322 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 164 transitions. [2021-10-07 15:11:02,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-07 15:11:02,322 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:02,322 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:11:02,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-07 15:11:02,323 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:11:02,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:02,323 INFO L82 PathProgramCache]: Analyzing trace with hash -362470525, now seen corresponding path program 1 times [2021-10-07 15:11:02,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:02,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878692727] [2021-10-07 15:11:02,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:02,324 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:02,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:02,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 15:11:02,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:02,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878692727] [2021-10-07 15:11:02,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878692727] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:11:02,383 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:11:02,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-07 15:11:02,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395542755] [2021-10-07 15:11:02,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:11:02,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:02,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:11:02,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:11:02,385 INFO L87 Difference]: Start difference. First operand 72 states and 164 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) [2021-10-07 15:11:02,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:02,399 INFO L93 Difference]: Finished difference Result 82 states and 179 transitions. [2021-10-07 15:11:02,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:11:02,399 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 [2021-10-07 15:11:02,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:02,400 INFO L225 Difference]: With dead ends: 82 [2021-10-07 15:11:02,400 INFO L226 Difference]: Without dead ends: 72 [2021-10-07 15:11:02,401 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 [2021-10-07 15:11:02,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-10-07 15:11:02,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-10-07 15:11:02,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 64 states have (on average 2.515625) internal successors, (161), 71 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:02,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 161 transitions. [2021-10-07 15:11:02,404 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 161 transitions. Word has length 10 [2021-10-07 15:11:02,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:02,404 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 161 transitions. [2021-10-07 15:11:02,405 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) [2021-10-07 15:11:02,405 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 161 transitions. [2021-10-07 15:11:02,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-07 15:11:02,405 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:02,405 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:11:02,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-07 15:11:02,406 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:11:02,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:02,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1651924365, now seen corresponding path program 1 times [2021-10-07 15:11:02,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:02,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117447886] [2021-10-07 15:11:02,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:02,407 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:02,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:02,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:11:02,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:02,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117447886] [2021-10-07 15:11:02,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117447886] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:02,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125537523] [2021-10-07 15:11:02,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:02,710 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:02,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:11:02,711 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:11:02,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-07 15:11:02,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:02,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-07 15:11:02,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:11:02,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-07 15:11:03,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-07 15:11:03,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-07 15:11:03,258 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:11:03,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125537523] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:03,258 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:11:03,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 11 [2021-10-07 15:11:03,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045984009] [2021-10-07 15:11:03,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:11:03,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:03,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:11:03,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:11:03,261 INFO L87 Difference]: Start difference. First operand 72 states and 161 transitions. Second operand has 13 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:03,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:03,703 INFO L93 Difference]: Finished difference Result 111 states and 268 transitions. [2021-10-07 15:11:03,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 15:11:03,704 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-07 15:11:03,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:03,706 INFO L225 Difference]: With dead ends: 111 [2021-10-07 15:11:03,706 INFO L226 Difference]: Without dead ends: 111 [2021-10-07 15:11:03,706 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 406.6ms TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-10-07 15:11:03,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-10-07 15:11:03,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 95. [2021-10-07 15:11:03,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 87 states have (on average 2.4022988505747125) internal successors, (209), 94 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:03,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 209 transitions. [2021-10-07 15:11:03,712 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 209 transitions. Word has length 11 [2021-10-07 15:11:03,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:03,713 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 209 transitions. [2021-10-07 15:11:03,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:03,713 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 209 transitions. [2021-10-07 15:11:03,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-07 15:11:03,716 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:03,716 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:11:03,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-07 15:11:03,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-07 15:11:03,931 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:11:03,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:03,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1651924319, now seen corresponding path program 1 times [2021-10-07 15:11:03,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:03,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318681631] [2021-10-07 15:11:03,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:03,933 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:03,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:04,165 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:11:04,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:04,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318681631] [2021-10-07 15:11:04,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318681631] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:04,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234171852] [2021-10-07 15:11:04,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:04,167 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:04,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:11:04,171 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:11:04,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-07 15:11:04,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:04,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-07 15:11:04,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:11:04,500 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:11:04,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234171852] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:04,501 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:11:04,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-07 15:11:04,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792660987] [2021-10-07 15:11:04,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 15:11:04,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:04,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 15:11:04,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:11:04,502 INFO L87 Difference]: Start difference. First operand 95 states and 209 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:04,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:04,749 INFO L93 Difference]: Finished difference Result 158 states and 372 transitions. [2021-10-07 15:11:04,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 15:11:04,750 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-07 15:11:04,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:04,752 INFO L225 Difference]: With dead ends: 158 [2021-10-07 15:11:04,752 INFO L226 Difference]: Without dead ends: 158 [2021-10-07 15:11:04,752 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 232.1ms TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:11:04,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-10-07 15:11:04,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 132. [2021-10-07 15:11:04,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 124 states have (on average 2.2661290322580645) internal successors, (281), 131 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:04,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 281 transitions. [2021-10-07 15:11:04,761 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 281 transitions. Word has length 11 [2021-10-07 15:11:04,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:04,761 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 281 transitions. [2021-10-07 15:11:04,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:04,761 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 281 transitions. [2021-10-07 15:11:04,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-07 15:11:04,763 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:04,763 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:11:04,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-07 15:11:04,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:04,977 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:11:04,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:04,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1625112465, now seen corresponding path program 2 times [2021-10-07 15:11:04,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:04,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675128615] [2021-10-07 15:11:04,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:04,978 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:05,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:05,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:11:05,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:05,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675128615] [2021-10-07 15:11:05,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675128615] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:05,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340389575] [2021-10-07 15:11:05,276 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:11:05,276 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:05,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:11:05,277 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:11:05,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-07 15:11:05,387 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 15:11:05,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:11:05,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 15:11:05,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:11:05,565 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:11:05,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-07 15:11:05,588 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 15:11:05,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340389575] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:11:05,588 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:11:05,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2021-10-07 15:11:05,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677629838] [2021-10-07 15:11:05,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:11:05,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:05,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:11:05,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:11:05,590 INFO L87 Difference]: Start difference. First operand 132 states and 281 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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) [2021-10-07 15:11:05,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:05,689 INFO L93 Difference]: Finished difference Result 146 states and 329 transitions. [2021-10-07 15:11:05,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:11:05,690 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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 [2021-10-07 15:11:05,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:05,692 INFO L225 Difference]: With dead ends: 146 [2021-10-07 15:11:05,692 INFO L226 Difference]: Without dead ends: 146 [2021-10-07 15:11:05,692 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 168.9ms TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:11:05,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-10-07 15:11:05,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2021-10-07 15:11:05,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 138 states have (on average 2.3840579710144927) internal successors, (329), 145 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:05,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 329 transitions. [2021-10-07 15:11:05,699 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 329 transitions. Word has length 11 [2021-10-07 15:11:05,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:05,699 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 329 transitions. [2021-10-07 15:11:05,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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) [2021-10-07 15:11:05,700 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 329 transitions. [2021-10-07 15:11:05,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-07 15:11:05,700 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:05,700 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:11:05,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-07 15:11:05,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-07 15:11:05,914 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:11:05,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:05,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1625112492, now seen corresponding path program 1 times [2021-10-07 15:11:05,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:05,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656980860] [2021-10-07 15:11:05,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:05,916 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:05,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:06,221 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:11:06,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:06,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656980860] [2021-10-07 15:11:06,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656980860] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:06,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102994470] [2021-10-07 15:11:06,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:06,222 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:06,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:11:06,223 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:11:06,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-07 15:11:06,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:06,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-07 15:11:06,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:11:06,441 INFO L354 Elim1Store]: treesize reduction 244, result has 14.7 percent of original size [2021-10-07 15:11:06,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 47 [2021-10-07 15:11:07,083 INFO L354 Elim1Store]: treesize reduction 108, result has 36.1 percent of original size [2021-10-07 15:11:07,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 52 treesize of output 98 [2021-10-07 15:11:07,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-07 15:11:07,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-07 15:11:07,407 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:11:07,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-07 15:11:07,449 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:11:07,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102994470] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:07,450 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:11:07,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-10-07 15:11:07,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615606109] [2021-10-07 15:11:07,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:11:07,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:07,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:11:07,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:11:07,452 INFO L87 Difference]: Start difference. First operand 146 states and 329 transitions. Second operand has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:08,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:08,005 INFO L93 Difference]: Finished difference Result 168 states and 373 transitions. [2021-10-07 15:11:08,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:11:08,006 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-07 15:11:08,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:08,007 INFO L225 Difference]: With dead ends: 168 [2021-10-07 15:11:08,007 INFO L226 Difference]: Without dead ends: 168 [2021-10-07 15:11:08,008 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 551.4ms TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2021-10-07 15:11:08,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-10-07 15:11:08,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 148. [2021-10-07 15:11:08,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 140 states have (on average 2.3642857142857143) internal successors, (331), 147 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:08,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 331 transitions. [2021-10-07 15:11:08,014 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 331 transitions. Word has length 11 [2021-10-07 15:11:08,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:08,014 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 331 transitions. [2021-10-07 15:11:08,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:08,015 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 331 transitions. [2021-10-07 15:11:08,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-07 15:11:08,015 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:08,016 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:11:08,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-07 15:11:08,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:08,230 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:11:08,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:08,230 INFO L82 PathProgramCache]: Analyzing trace with hash -576604294, now seen corresponding path program 2 times [2021-10-07 15:11:08,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:08,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51705364] [2021-10-07 15:11:08,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:08,231 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:08,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:08,753 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:11:08,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:08,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51705364] [2021-10-07 15:11:08,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51705364] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:08,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748377933] [2021-10-07 15:11:08,754 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:11:08,754 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:08,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:11:08,755 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:11:08,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-07 15:11:08,898 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 15:11:08,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:11:08,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-07 15:11:08,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:11:09,006 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:11:09,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748377933] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:11:09,006 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:11:09,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 9 [2021-10-07 15:11:09,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945236322] [2021-10-07 15:11:09,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:11:09,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:09,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:11:09,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-10-07 15:11:09,008 INFO L87 Difference]: Start difference. First operand 148 states and 331 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) [2021-10-07 15:11:09,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:09,053 INFO L93 Difference]: Finished difference Result 188 states and 415 transitions. [2021-10-07 15:11:09,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:11:09,053 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 12 [2021-10-07 15:11:09,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:09,055 INFO L225 Difference]: With dead ends: 188 [2021-10-07 15:11:09,055 INFO L226 Difference]: Without dead ends: 188 [2021-10-07 15:11:09,056 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 189.2ms TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-10-07 15:11:09,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-10-07 15:11:09,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 138. [2021-10-07 15:11:09,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 130 states have (on average 2.3923076923076922) internal successors, (311), 137 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:09,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 311 transitions. [2021-10-07 15:11:09,062 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 311 transitions. Word has length 12 [2021-10-07 15:11:09,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:09,063 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 311 transitions. [2021-10-07 15:11:09,063 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) [2021-10-07 15:11:09,063 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 311 transitions. [2021-10-07 15:11:09,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-07 15:11:09,064 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:09,064 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:11:09,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-07 15:11:09,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-07 15:11:09,278 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:11:09,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:09,279 INFO L82 PathProgramCache]: Analyzing trace with hash -603416194, now seen corresponding path program 3 times [2021-10-07 15:11:09,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:09,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26649211] [2021-10-07 15:11:09,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:09,280 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:09,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:09,702 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:11:09,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:09,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26649211] [2021-10-07 15:11:09,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26649211] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:09,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570576488] [2021-10-07 15:11:09,702 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:11:09,703 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:09,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:11:09,704 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:11:09,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-07 15:11:09,864 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-07 15:11:09,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:11:09,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 15:11:09,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:11:10,061 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:11:10,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-07 15:11:10,084 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:11:10,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570576488] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:11:10,085 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:11:10,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 12 [2021-10-07 15:11:10,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375261895] [2021-10-07 15:11:10,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:11:10,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:10,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:11:10,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:11:10,087 INFO L87 Difference]: Start difference. First operand 138 states and 311 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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) [2021-10-07 15:11:10,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:10,214 INFO L93 Difference]: Finished difference Result 138 states and 297 transitions. [2021-10-07 15:11:10,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:11:10,215 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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 12 [2021-10-07 15:11:10,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:10,216 INFO L225 Difference]: With dead ends: 138 [2021-10-07 15:11:10,216 INFO L226 Difference]: Without dead ends: 138 [2021-10-07 15:11:10,217 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 230.0ms TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:11:10,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-10-07 15:11:10,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 110. [2021-10-07 15:11:10,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 102 states have (on average 2.3823529411764706) internal successors, (243), 109 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:10,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 243 transitions. [2021-10-07 15:11:10,222 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 243 transitions. Word has length 12 [2021-10-07 15:11:10,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:10,222 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 243 transitions. [2021-10-07 15:11:10,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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) [2021-10-07 15:11:10,223 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 243 transitions. [2021-10-07 15:11:10,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-07 15:11:10,223 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:10,224 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:11:10,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-07 15:11:10,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-07 15:11:10,438 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:11:10,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:10,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1758202570, now seen corresponding path program 2 times [2021-10-07 15:11:10,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:10,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065466028] [2021-10-07 15:11:10,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:10,441 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:10,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:11,090 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:11:11,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:11,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065466028] [2021-10-07 15:11:11,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065466028] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:11,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44112053] [2021-10-07 15:11:11,091 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:11:11,092 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:11,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:11:11,093 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:11:11,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-07 15:11:11,229 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 15:11:11,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:11:11,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-07 15:11:11,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:11:11,363 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:11:11,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44112053] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:11:11,364 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:11:11,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 11 [2021-10-07 15:11:11,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943569842] [2021-10-07 15:11:11,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 15:11:11,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:11,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 15:11:11,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:11:11,367 INFO L87 Difference]: Start difference. First operand 110 states and 243 transitions. Second operand has 5 states, 4 states have (on average 2.75) 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) [2021-10-07 15:11:11,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:11,422 INFO L93 Difference]: Finished difference Result 122 states and 285 transitions. [2021-10-07 15:11:11,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:11:11,423 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) 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 12 [2021-10-07 15:11:11,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:11,424 INFO L225 Difference]: With dead ends: 122 [2021-10-07 15:11:11,424 INFO L226 Difference]: Without dead ends: 122 [2021-10-07 15:11:11,425 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 287.9ms TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:11:11,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-10-07 15:11:11,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2021-10-07 15:11:11,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 114 states have (on average 2.5) internal successors, (285), 121 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:11,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 285 transitions. [2021-10-07 15:11:11,430 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 285 transitions. Word has length 12 [2021-10-07 15:11:11,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:11,430 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 285 transitions. [2021-10-07 15:11:11,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) 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) [2021-10-07 15:11:11,430 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 285 transitions. [2021-10-07 15:11:11,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-07 15:11:11,431 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:11,431 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:11:11,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-07 15:11:11,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:11,643 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:11:11,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:11,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1758202571, now seen corresponding path program 1 times [2021-10-07 15:11:11,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:11,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859231780] [2021-10-07 15:11:11,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:11,644 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:11,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:12,139 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:11:12,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:12,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859231780] [2021-10-07 15:11:12,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859231780] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:12,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812622772] [2021-10-07 15:11:12,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:12,140 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:12,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:11:12,141 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:11:12,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-07 15:11:12,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:12,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-07 15:11:12,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:11:12,429 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 15:11:12,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812622772] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:12,429 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:11:12,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3] total 8 [2021-10-07 15:11:12,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271132445] [2021-10-07 15:11:12,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 15:11:12,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:12,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 15:11:12,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:11:12,431 INFO L87 Difference]: Start difference. First operand 122 states and 285 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:12,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:12,991 INFO L93 Difference]: Finished difference Result 158 states and 343 transitions. [2021-10-07 15:11:12,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-07 15:11:12,992 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-07 15:11:12,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:12,994 INFO L225 Difference]: With dead ends: 158 [2021-10-07 15:11:12,994 INFO L226 Difference]: Without dead ends: 158 [2021-10-07 15:11:12,995 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 548.3ms TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:11:12,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-10-07 15:11:12,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 96. [2021-10-07 15:11:12,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 88 states have (on average 2.5) internal successors, (220), 95 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:13,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 220 transitions. [2021-10-07 15:11:13,000 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 220 transitions. Word has length 12 [2021-10-07 15:11:13,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:13,000 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 220 transitions. [2021-10-07 15:11:13,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:13,000 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 220 transitions. [2021-10-07 15:11:13,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 15:11:13,001 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:13,001 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:11:13,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-07 15:11:13,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:13,217 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:11:13,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:13,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1638540863, now seen corresponding path program 1 times [2021-10-07 15:11:13,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:13,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618727268] [2021-10-07 15:11:13,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:13,219 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:13,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:13,273 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:11:13,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:13,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618727268] [2021-10-07 15:11:13,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618727268] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:13,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010218892] [2021-10-07 15:11:13,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:13,274 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:13,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:11:13,275 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:11:13,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-07 15:11:13,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:13,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:11:13,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:11:13,549 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:11:13,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010218892] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:13,550 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:11:13,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-10-07 15:11:13,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710034664] [2021-10-07 15:11:13,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-07 15:11:13,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:13,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-07 15:11:13,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-07 15:11:13,553 INFO L87 Difference]: Start difference. First operand 96 states and 220 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:13,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:13,619 INFO L93 Difference]: Finished difference Result 152 states and 333 transitions. [2021-10-07 15:11:13,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:11:13,620 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-07 15:11:13,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:13,624 INFO L225 Difference]: With dead ends: 152 [2021-10-07 15:11:13,624 INFO L226 Difference]: Without dead ends: 148 [2021-10-07 15:11:13,625 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 51.4ms TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-10-07 15:11:13,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-10-07 15:11:13,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 128. [2021-10-07 15:11:13,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 120 states have (on average 2.4166666666666665) internal successors, (290), 127 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:13,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 290 transitions. [2021-10-07 15:11:13,632 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 290 transitions. Word has length 13 [2021-10-07 15:11:13,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:13,633 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 290 transitions. [2021-10-07 15:11:13,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:13,633 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 290 transitions. [2021-10-07 15:11:13,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 15:11:13,634 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:13,634 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:11:13,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-07 15:11:13,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-10-07 15:11:13,849 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:11:13,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:13,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1638521752, now seen corresponding path program 1 times [2021-10-07 15:11:13,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:13,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611264774] [2021-10-07 15:11:13,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:13,850 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:13,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:13,901 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:11:13,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:13,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611264774] [2021-10-07 15:11:13,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611264774] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:13,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936212348] [2021-10-07 15:11:13,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:13,902 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:13,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:11:13,921 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:11:13,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-07 15:11:14,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:14,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:11:14,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:11:14,161 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:11:14,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936212348] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:14,161 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:11:14,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-10-07 15:11:14,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322569736] [2021-10-07 15:11:14,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-07 15:11:14,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:14,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-07 15:11:14,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-07 15:11:14,163 INFO L87 Difference]: Start difference. First operand 128 states and 290 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:14,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:14,229 INFO L93 Difference]: Finished difference Result 200 states and 428 transitions. [2021-10-07 15:11:14,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:11:14,229 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-07 15:11:14,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:14,231 INFO L225 Difference]: With dead ends: 200 [2021-10-07 15:11:14,231 INFO L226 Difference]: Without dead ends: 173 [2021-10-07 15:11:14,231 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 47.2ms TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-10-07 15:11:14,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-10-07 15:11:14,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 163. [2021-10-07 15:11:14,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 155 states have (on average 2.3483870967741933) internal successors, (364), 162 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:14,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 364 transitions. [2021-10-07 15:11:14,237 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 364 transitions. Word has length 13 [2021-10-07 15:11:14,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:14,238 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 364 transitions. [2021-10-07 15:11:14,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:14,238 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 364 transitions. [2021-10-07 15:11:14,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 15:11:14,239 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:14,239 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:11:14,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-07 15:11:14,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:14,454 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:11:14,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:14,455 INFO L82 PathProgramCache]: Analyzing trace with hash -65927405, now seen corresponding path program 2 times [2021-10-07 15:11:14,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:14,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28994379] [2021-10-07 15:11:14,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:14,456 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:14,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:14,538 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-07 15:11:14,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:14,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28994379] [2021-10-07 15:11:14,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28994379] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:11:14,539 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:11:14,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-07 15:11:14,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046080685] [2021-10-07 15:11:14,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:11:14,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:14,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:11:14,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:11:14,540 INFO L87 Difference]: Start difference. First operand 163 states and 364 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:14,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:14,562 INFO L93 Difference]: Finished difference Result 279 states and 610 transitions. [2021-10-07 15:11:14,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:11:14,563 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-07 15:11:14,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:14,565 INFO L225 Difference]: With dead ends: 279 [2021-10-07 15:11:14,565 INFO L226 Difference]: Without dead ends: 247 [2021-10-07 15:11:14,565 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:11:14,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-10-07 15:11:14,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 163. [2021-10-07 15:11:14,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 153 states have (on average 2.6143790849673203) internal successors, (400), 162 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:14,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 400 transitions. [2021-10-07 15:11:14,573 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 400 transitions. Word has length 14 [2021-10-07 15:11:14,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:14,575 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 400 transitions. [2021-10-07 15:11:14,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:14,575 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 400 transitions. [2021-10-07 15:11:14,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 15:11:14,576 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:14,576 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:11:14,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-10-07 15:11:14,577 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:11:14,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:14,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1710629651, now seen corresponding path program 2 times [2021-10-07 15:11:14,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:14,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938647540] [2021-10-07 15:11:14,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:14,578 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:14,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:14,654 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:11:14,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:14,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938647540] [2021-10-07 15:11:14,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938647540] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:11:14,655 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:11:14,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-07 15:11:14,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337113597] [2021-10-07 15:11:14,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:11:14,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:14,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:11:14,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:11:14,657 INFO L87 Difference]: Start difference. First operand 163 states and 400 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:14,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:14,679 INFO L93 Difference]: Finished difference Result 285 states and 671 transitions. [2021-10-07 15:11:14,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:11:14,680 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-07 15:11:14,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:14,684 INFO L225 Difference]: With dead ends: 285 [2021-10-07 15:11:14,684 INFO L226 Difference]: Without dead ends: 250 [2021-10-07 15:11:14,684 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:11:14,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-10-07 15:11:14,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 172. [2021-10-07 15:11:14,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 160 states have (on average 2.95) internal successors, (472), 171 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:14,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 472 transitions. [2021-10-07 15:11:14,696 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 472 transitions. Word has length 14 [2021-10-07 15:11:14,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:14,696 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 472 transitions. [2021-10-07 15:11:14,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:14,697 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 472 transitions. [2021-10-07 15:11:14,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 15:11:14,699 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:14,700 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:11:14,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-10-07 15:11:14,700 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:11:14,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:14,700 INFO L82 PathProgramCache]: Analyzing trace with hash -747426159, now seen corresponding path program 1 times [2021-10-07 15:11:14,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:14,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335123365] [2021-10-07 15:11:14,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:14,701 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:14,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:14,990 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:11:14,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:14,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335123365] [2021-10-07 15:11:14,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335123365] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:14,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544309936] [2021-10-07 15:11:14,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:14,992 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:14,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:11:14,993 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:11:14,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-07 15:11:15,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:15,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-07 15:11:15,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:11:15,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-07 15:11:15,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-07 15:11:15,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-07 15:11:15,689 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:11:15,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544309936] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:15,689 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:11:15,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 17 [2021-10-07 15:11:15,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401453829] [2021-10-07 15:11:15,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 15:11:15,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:15,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 15:11:15,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2021-10-07 15:11:15,691 INFO L87 Difference]: Start difference. First operand 172 states and 472 transitions. Second operand has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:16,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:16,416 INFO L93 Difference]: Finished difference Result 450 states and 1105 transitions. [2021-10-07 15:11:16,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:11:16,425 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-07 15:11:16,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:16,428 INFO L225 Difference]: With dead ends: 450 [2021-10-07 15:11:16,428 INFO L226 Difference]: Without dead ends: 450 [2021-10-07 15:11:16,429 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 570.7ms TimeCoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2021-10-07 15:11:16,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2021-10-07 15:11:16,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 280. [2021-10-07 15:11:16,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 268 states have (on average 3.111940298507463) internal successors, (834), 279 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:16,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 834 transitions. [2021-10-07 15:11:16,442 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 834 transitions. Word has length 17 [2021-10-07 15:11:16,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:16,442 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 834 transitions. [2021-10-07 15:11:16,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:16,443 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 834 transitions. [2021-10-07 15:11:16,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 15:11:16,443 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:16,443 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:11:16,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-07 15:11:16,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:16,658 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:11:16,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:16,658 INFO L82 PathProgramCache]: Analyzing trace with hash -747426205, now seen corresponding path program 1 times [2021-10-07 15:11:16,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:16,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275067880] [2021-10-07 15:11:16,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:16,660 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:16,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:16,996 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:11:16,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:16,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275067880] [2021-10-07 15:11:16,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275067880] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:16,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351963420] [2021-10-07 15:11:16,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:16,997 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:16,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:11:16,998 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:11:17,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-07 15:11:17,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:17,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 53 conjunts are in the unsatisfiable core [2021-10-07 15:11:17,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:11:17,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-07 15:11:17,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:11:17,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-07 15:11:17,544 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 15:11:17,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-10-07 15:11:17,631 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 15:11:17,632 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-10-07 15:11:18,060 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:11:18,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351963420] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:18,060 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:11:18,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12] total 20 [2021-10-07 15:11:18,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695953679] [2021-10-07 15:11:18,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-07 15:11:18,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:18,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-07 15:11:18,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=414, Unknown=0, NotChecked=0, Total=462 [2021-10-07 15:11:18,062 INFO L87 Difference]: Start difference. First operand 280 states and 834 transitions. Second operand has 22 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:20,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:20,927 INFO L93 Difference]: Finished difference Result 657 states and 1723 transitions. [2021-10-07 15:11:20,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-07 15:11:20,928 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-07 15:11:20,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:20,933 INFO L225 Difference]: With dead ends: 657 [2021-10-07 15:11:20,933 INFO L226 Difference]: Without dead ends: 657 [2021-10-07 15:11:20,934 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 2176.3ms TimeCoverageRelationStatistics Valid=248, Invalid=2202, Unknown=0, NotChecked=0, Total=2450 [2021-10-07 15:11:20,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2021-10-07 15:11:20,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 467. [2021-10-07 15:11:20,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 455 states have (on average 3.0263736263736263) internal successors, (1377), 466 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:20,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 1377 transitions. [2021-10-07 15:11:20,953 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 1377 transitions. Word has length 17 [2021-10-07 15:11:20,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:20,954 INFO L470 AbstractCegarLoop]: Abstraction has 467 states and 1377 transitions. [2021-10-07 15:11:20,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:20,954 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 1377 transitions. [2021-10-07 15:11:20,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 15:11:20,955 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:20,955 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:11:20,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-07 15:11:21,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-10-07 15:11:21,171 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:11:21,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:21,172 INFO L82 PathProgramCache]: Analyzing trace with hash -747426204, now seen corresponding path program 1 times [2021-10-07 15:11:21,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:21,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482291690] [2021-10-07 15:11:21,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:21,173 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:21,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:21,439 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:11:21,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:21,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482291690] [2021-10-07 15:11:21,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482291690] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:21,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057715817] [2021-10-07 15:11:21,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:21,440 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:21,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:11:21,441 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:11:21,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-07 15:11:21,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:21,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-07 15:11:21,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:11:21,871 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:11:21,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057715817] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:21,871 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:11:21,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 11 [2021-10-07 15:11:21,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909856963] [2021-10-07 15:11:21,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:11:21,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:21,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:11:21,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:11:21,873 INFO L87 Difference]: Start difference. First operand 467 states and 1377 transitions. Second operand has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:22,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:22,454 INFO L93 Difference]: Finished difference Result 755 states and 1941 transitions. [2021-10-07 15:11:22,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-07 15:11:22,455 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-07 15:11:22,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:22,460 INFO L225 Difference]: With dead ends: 755 [2021-10-07 15:11:22,460 INFO L226 Difference]: Without dead ends: 743 [2021-10-07 15:11:22,461 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 426.4ms TimeCoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2021-10-07 15:11:22,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2021-10-07 15:11:22,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 559. [2021-10-07 15:11:22,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 547 states have (on average 2.9085923217550276) internal successors, (1591), 558 states have internal predecessors, (1591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:22,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 1591 transitions. [2021-10-07 15:11:22,483 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 1591 transitions. Word has length 17 [2021-10-07 15:11:22,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:22,483 INFO L470 AbstractCegarLoop]: Abstraction has 559 states and 1591 transitions. [2021-10-07 15:11:22,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:22,484 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 1591 transitions. [2021-10-07 15:11:22,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 15:11:22,484 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:22,484 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:11:22,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-10-07 15:11:22,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-10-07 15:11:22,699 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:11:22,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:22,700 INFO L82 PathProgramCache]: Analyzing trace with hash -747426132, now seen corresponding path program 1 times [2021-10-07 15:11:22,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:22,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746778281] [2021-10-07 15:11:22,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:22,701 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:22,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:22,952 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:11:22,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:22,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746778281] [2021-10-07 15:11:22,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746778281] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:22,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143554465] [2021-10-07 15:11:22,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:22,953 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:22,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:11:22,954 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:11:22,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-07 15:11:23,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:23,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-07 15:11:23,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:11:23,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-07 15:11:23,409 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:11:23,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-07 15:11:23,511 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:11:23,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-07 15:11:23,819 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:11:23,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143554465] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:23,820 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:11:23,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 15:11:23,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793968263] [2021-10-07 15:11:23,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 15:11:23,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:23,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 15:11:23,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2021-10-07 15:11:23,821 INFO L87 Difference]: Start difference. First operand 559 states and 1591 transitions. Second operand has 20 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:24,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:24,563 INFO L93 Difference]: Finished difference Result 605 states and 1692 transitions. [2021-10-07 15:11:24,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-07 15:11:24,564 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-07 15:11:24,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:24,569 INFO L225 Difference]: With dead ends: 605 [2021-10-07 15:11:24,569 INFO L226 Difference]: Without dead ends: 605 [2021-10-07 15:11:24,570 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 706.3ms TimeCoverageRelationStatistics Valid=104, Invalid=598, Unknown=0, NotChecked=0, Total=702 [2021-10-07 15:11:24,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2021-10-07 15:11:24,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 593. [2021-10-07 15:11:24,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 581 states have (on average 2.8674698795180724) internal successors, (1666), 592 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:24,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 1666 transitions. [2021-10-07 15:11:24,590 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 1666 transitions. Word has length 17 [2021-10-07 15:11:24,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:24,590 INFO L470 AbstractCegarLoop]: Abstraction has 593 states and 1666 transitions. [2021-10-07 15:11:24,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:24,590 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 1666 transitions. [2021-10-07 15:11:24,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 15:11:24,591 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:24,591 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:11:24,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-07 15:11:24,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-10-07 15:11:24,806 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:11:24,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:24,807 INFO L82 PathProgramCache]: Analyzing trace with hash -745873989, now seen corresponding path program 2 times [2021-10-07 15:11:24,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:24,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456894844] [2021-10-07 15:11:24,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:24,808 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:24,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:25,166 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:11:25,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:25,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456894844] [2021-10-07 15:11:25,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456894844] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:25,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149993062] [2021-10-07 15:11:25,167 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:11:25,167 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:25,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:11:25,170 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:11:25,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-07 15:11:25,449 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:11:25,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:11:25,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-07 15:11:25,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:11:25,902 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:11:25,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149993062] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:25,903 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:11:25,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2021-10-07 15:11:25,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566874672] [2021-10-07 15:11:25,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-07 15:11:25,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:25,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-07 15:11:25,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2021-10-07 15:11:25,905 INFO L87 Difference]: Start difference. First operand 593 states and 1666 transitions. Second operand has 18 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:26,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:26,738 INFO L93 Difference]: Finished difference Result 647 states and 1568 transitions. [2021-10-07 15:11:26,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-07 15:11:26,738 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-07 15:11:26,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:26,743 INFO L225 Difference]: With dead ends: 647 [2021-10-07 15:11:26,743 INFO L226 Difference]: Without dead ends: 603 [2021-10-07 15:11:26,744 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 784.6ms TimeCoverageRelationStatistics Valid=136, Invalid=620, Unknown=0, NotChecked=0, Total=756 [2021-10-07 15:11:26,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2021-10-07 15:11:26,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 462. [2021-10-07 15:11:26,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 450 states have (on average 2.6622222222222223) internal successors, (1198), 461 states have internal predecessors, (1198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:26,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 1198 transitions. [2021-10-07 15:11:26,761 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 1198 transitions. Word has length 17 [2021-10-07 15:11:26,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:26,761 INFO L470 AbstractCegarLoop]: Abstraction has 462 states and 1198 transitions. [2021-10-07 15:11:26,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:26,761 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 1198 transitions. [2021-10-07 15:11:26,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 15:11:26,762 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:26,762 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:11:26,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-10-07 15:11:26,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-10-07 15:11:26,976 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:11:26,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:26,977 INFO L82 PathProgramCache]: Analyzing trace with hash -745873962, now seen corresponding path program 2 times [2021-10-07 15:11:26,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:26,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121537913] [2021-10-07 15:11:26,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:26,977 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:27,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:28,210 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:11:28,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:28,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121537913] [2021-10-07 15:11:28,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121537913] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:28,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408505195] [2021-10-07 15:11:28,211 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:11:28,211 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:28,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:11:28,212 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:11:28,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-07 15:11:28,535 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:11:28,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:11:28,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-07 15:11:28,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:11:28,651 INFO L354 Elim1Store]: treesize reduction 244, result has 14.7 percent of original size [2021-10-07 15:11:28,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 69 treesize of output 92 [2021-10-07 15:11:30,963 INFO L354 Elim1Store]: treesize reduction 108, result has 36.1 percent of original size [2021-10-07 15:11:30,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 68 treesize of output 114 [2021-10-07 15:11:31,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-07 15:11:31,338 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:11:31,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2021-10-07 15:11:31,442 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:11:31,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2021-10-07 15:11:31,823 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:11:31,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408505195] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:31,824 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:11:31,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 23 [2021-10-07 15:11:31,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438172455] [2021-10-07 15:11:31,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-07 15:11:31,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:31,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-07 15:11:31,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=541, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:11:31,825 INFO L87 Difference]: Start difference. First operand 462 states and 1198 transitions. Second operand has 25 states, 24 states have (on average 1.375) internal successors, (33), 24 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:35,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:35,391 INFO L93 Difference]: Finished difference Result 653 states and 1579 transitions. [2021-10-07 15:11:35,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-07 15:11:35,392 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.375) internal successors, (33), 24 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-07 15:11:35,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:35,396 INFO L225 Difference]: With dead ends: 653 [2021-10-07 15:11:35,396 INFO L226 Difference]: Without dead ends: 623 [2021-10-07 15:11:35,398 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 3440.1ms TimeCoverageRelationStatistics Valid=257, Invalid=2193, Unknown=0, NotChecked=0, Total=2450 [2021-10-07 15:11:35,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2021-10-07 15:11:35,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 569. [2021-10-07 15:11:35,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 557 states have (on average 2.563734290843806) internal successors, (1428), 568 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:35,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 1428 transitions. [2021-10-07 15:11:35,417 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 1428 transitions. Word has length 17 [2021-10-07 15:11:35,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:35,417 INFO L470 AbstractCegarLoop]: Abstraction has 569 states and 1428 transitions. [2021-10-07 15:11:35,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.375) internal successors, (33), 24 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:35,417 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 1428 transitions. [2021-10-07 15:11:35,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 15:11:35,418 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:35,418 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:11:35,456 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-10-07 15:11:35,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:35,633 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:11:35,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:35,633 INFO L82 PathProgramCache]: Analyzing trace with hash -729123805, now seen corresponding path program 2 times [2021-10-07 15:11:35,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:35,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275124943] [2021-10-07 15:11:35,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:35,635 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:35,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:36,062 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:11:36,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:36,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275124943] [2021-10-07 15:11:36,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275124943] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:36,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032353338] [2021-10-07 15:11:36,065 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:11:36,066 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:36,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:11:36,067 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:11:36,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-10-07 15:11:36,424 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:11:36,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:11:36,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-07 15:11:36,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:11:36,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:11:36,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:11:36,552 INFO L354 Elim1Store]: treesize reduction 228, result has 15.6 percent of original size [2021-10-07 15:11:36,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 61 treesize of output 84 [2021-10-07 15:11:37,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-07 15:11:37,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:11:38,016 INFO L354 Elim1Store]: treesize reduction 92, result has 39.9 percent of original size [2021-10-07 15:11:38,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 19 case distinctions, treesize of input 60 treesize of output 106 [2021-10-07 15:11:38,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-07 15:11:38,266 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-10-07 15:11:38,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2021-10-07 15:11:38,340 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 15:11:38,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-10-07 15:11:38,427 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 15:11:38,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-10-07 15:11:38,670 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:11:38,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032353338] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:38,671 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:11:38,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 19 [2021-10-07 15:11:38,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593136771] [2021-10-07 15:11:38,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-07 15:11:38,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:38,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-07 15:11:38,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2021-10-07 15:11:38,672 INFO L87 Difference]: Start difference. First operand 569 states and 1428 transitions. Second operand has 21 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:39,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:39,650 INFO L93 Difference]: Finished difference Result 653 states and 1544 transitions. [2021-10-07 15:11:39,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:11:39,650 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-07 15:11:39,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:39,653 INFO L225 Difference]: With dead ends: 653 [2021-10-07 15:11:39,653 INFO L226 Difference]: Without dead ends: 579 [2021-10-07 15:11:39,653 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1043.2ms TimeCoverageRelationStatistics Valid=102, Invalid=710, Unknown=0, NotChecked=0, Total=812 [2021-10-07 15:11:39,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2021-10-07 15:11:39,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 487. [2021-10-07 15:11:39,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 475 states have (on average 2.5431578947368423) internal successors, (1208), 486 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:39,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 1208 transitions. [2021-10-07 15:11:39,669 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 1208 transitions. Word has length 17 [2021-10-07 15:11:39,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:39,669 INFO L470 AbstractCegarLoop]: Abstraction has 487 states and 1208 transitions. [2021-10-07 15:11:39,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:39,669 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 1208 transitions. [2021-10-07 15:11:39,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 15:11:39,670 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:39,670 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:11:39,704 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2021-10-07 15:11:39,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-10-07 15:11:39,885 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:11:39,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:39,885 INFO L82 PathProgramCache]: Analyzing trace with hash -729123804, now seen corresponding path program 2 times [2021-10-07 15:11:39,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:39,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513240946] [2021-10-07 15:11:39,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:39,886 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:39,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:40,122 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:11:40,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:40,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513240946] [2021-10-07 15:11:40,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513240946] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:40,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712534376] [2021-10-07 15:11:40,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:11:40,123 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:40,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:11:40,124 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:11:40,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-07 15:11:40,490 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:11:40,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:11:40,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 43 conjunts are in the unsatisfiable core [2021-10-07 15:11:40,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:11:40,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:11:40,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:11:40,616 INFO L354 Elim1Store]: treesize reduction 228, result has 15.6 percent of original size [2021-10-07 15:11:40,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 272 treesize of output 281 [2021-10-07 15:11:41,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-07 15:11:42,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:11:42,175 INFO L354 Elim1Store]: treesize reduction 92, result has 39.9 percent of original size [2021-10-07 15:11:42,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 19 case distinctions, treesize of input 60 treesize of output 106 [2021-10-07 15:11:42,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-10-07 15:11:42,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-10-07 15:11:42,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-07 15:11:42,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-07 15:11:42,747 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:11:42,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712534376] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:42,748 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:11:42,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10] total 17 [2021-10-07 15:11:42,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678380366] [2021-10-07 15:11:42,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 15:11:42,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:42,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 15:11:42,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2021-10-07 15:11:42,750 INFO L87 Difference]: Start difference. First operand 487 states and 1208 transitions. Second operand has 19 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 18 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:43,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:43,643 INFO L93 Difference]: Finished difference Result 539 states and 1258 transitions. [2021-10-07 15:11:43,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-07 15:11:43,644 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 18 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-07 15:11:43,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:43,653 INFO L225 Difference]: With dead ends: 539 [2021-10-07 15:11:43,653 INFO L226 Difference]: Without dead ends: 507 [2021-10-07 15:11:43,654 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 899.2ms TimeCoverageRelationStatistics Valid=114, Invalid=698, Unknown=0, NotChecked=0, Total=812 [2021-10-07 15:11:43,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2021-10-07 15:11:43,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 443. [2021-10-07 15:11:43,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 431 states have (on average 2.5406032482598606) internal successors, (1095), 442 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:43,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 1095 transitions. [2021-10-07 15:11:43,671 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 1095 transitions. Word has length 17 [2021-10-07 15:11:43,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:43,671 INFO L470 AbstractCegarLoop]: Abstraction has 443 states and 1095 transitions. [2021-10-07 15:11:43,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 18 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:43,672 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 1095 transitions. [2021-10-07 15:11:43,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 15:11:43,672 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:43,673 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:11:43,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-10-07 15:11:43,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:43,889 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:11:43,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:43,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1612112422, now seen corresponding path program 3 times [2021-10-07 15:11:43,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:43,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274332379] [2021-10-07 15:11:43,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:43,892 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:43,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:44,218 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:11:44,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:44,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274332379] [2021-10-07 15:11:44,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274332379] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:44,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025473671] [2021-10-07 15:11:44,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:11:44,220 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:44,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:11:44,223 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:11:44,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-10-07 15:11:44,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:11:44,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:11:44,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 45 conjunts are in the unsatisfiable core [2021-10-07 15:11:44,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:11:44,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-10-07 15:11:44,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:11:44,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2021-10-07 15:11:44,857 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-10-07 15:11:44,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 37 [2021-10-07 15:11:45,002 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-10-07 15:11:45,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 37 [2021-10-07 15:11:45,215 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:11:45,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025473671] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:45,215 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:11:45,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 17 [2021-10-07 15:11:45,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52773815] [2021-10-07 15:11:45,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 15:11:45,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:45,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 15:11:45,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2021-10-07 15:11:45,217 INFO L87 Difference]: Start difference. First operand 443 states and 1095 transitions. Second operand has 19 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:46,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:46,970 INFO L93 Difference]: Finished difference Result 467 states and 1069 transitions. [2021-10-07 15:11:46,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-07 15:11:46,970 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-07 15:11:46,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:46,973 INFO L225 Difference]: With dead ends: 467 [2021-10-07 15:11:46,973 INFO L226 Difference]: Without dead ends: 393 [2021-10-07 15:11:46,973 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 1520.6ms TimeCoverageRelationStatistics Valid=190, Invalid=866, Unknown=0, NotChecked=0, Total=1056 [2021-10-07 15:11:46,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2021-10-07 15:11:46,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 323. [2021-10-07 15:11:46,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 311 states have (on average 2.581993569131833) internal successors, (803), 322 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:46,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 803 transitions. [2021-10-07 15:11:46,983 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 803 transitions. Word has length 17 [2021-10-07 15:11:46,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:46,983 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 803 transitions. [2021-10-07 15:11:46,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:46,983 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 803 transitions. [2021-10-07 15:11:46,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:11:46,984 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:46,984 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:11:47,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-10-07 15:11:47,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:47,198 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:11:47,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:47,198 INFO L82 PathProgramCache]: Analyzing trace with hash 837213109, now seen corresponding path program 3 times [2021-10-07 15:11:47,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:47,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239087704] [2021-10-07 15:11:47,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:47,199 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:47,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:48,983 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:11:48,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:48,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239087704] [2021-10-07 15:11:48,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239087704] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:48,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604087048] [2021-10-07 15:11:48,984 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:11:48,984 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:48,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:11:48,985 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:11:48,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-10-07 15:11:49,453 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:11:49,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:11:49,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 15:11:49,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:11:49,713 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-07 15:11:49,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604087048] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:49,713 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:11:49,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 4] total 19 [2021-10-07 15:11:49,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969615026] [2021-10-07 15:11:49,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-07 15:11:49,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:49,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-07 15:11:49,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=373, Unknown=0, NotChecked=0, Total=420 [2021-10-07 15:11:49,715 INFO L87 Difference]: Start difference. First operand 323 states and 803 transitions. Second operand has 21 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:52,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:52,061 INFO L93 Difference]: Finished difference Result 565 states and 1268 transitions. [2021-10-07 15:11:52,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-07 15:11:52,062 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-07 15:11:52,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:52,066 INFO L225 Difference]: With dead ends: 565 [2021-10-07 15:11:52,066 INFO L226 Difference]: Without dead ends: 551 [2021-10-07 15:11:52,067 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 2239.9ms TimeCoverageRelationStatistics Valid=143, Invalid=1263, Unknown=0, NotChecked=0, Total=1406 [2021-10-07 15:11:52,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2021-10-07 15:11:52,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 388. [2021-10-07 15:11:52,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 376 states have (on average 2.5930851063829787) internal successors, (975), 387 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:52,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 975 transitions. [2021-10-07 15:11:52,080 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 975 transitions. Word has length 18 [2021-10-07 15:11:52,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:52,081 INFO L470 AbstractCegarLoop]: Abstraction has 388 states and 975 transitions. [2021-10-07 15:11:52,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:52,081 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 975 transitions. [2021-10-07 15:11:52,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:11:52,082 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:52,082 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:11:52,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-10-07 15:11:52,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-10-07 15:11:52,297 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:11:52,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:52,297 INFO L82 PathProgramCache]: Analyzing trace with hash 838765306, now seen corresponding path program 4 times [2021-10-07 15:11:52,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:52,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306628264] [2021-10-07 15:11:52,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:52,298 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:52,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:53,219 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:11:53,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:53,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306628264] [2021-10-07 15:11:53,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306628264] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:53,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610763462] [2021-10-07 15:11:53,220 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:11:53,221 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:53,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:11:53,222 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:11:53,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-10-07 15:11:53,698 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:11:53,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:11:53,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-07 15:11:53,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:11:53,983 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:11:53,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610763462] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:53,983 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:11:53,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 7] total 21 [2021-10-07 15:11:53,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656657451] [2021-10-07 15:11:53,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-07 15:11:53,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:53,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-07 15:11:53,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=454, Unknown=0, NotChecked=0, Total=506 [2021-10-07 15:11:53,985 INFO L87 Difference]: Start difference. First operand 388 states and 975 transitions. Second operand has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:55,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:55,678 INFO L93 Difference]: Finished difference Result 525 states and 1167 transitions. [2021-10-07 15:11:55,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-07 15:11:55,679 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-07 15:11:55,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:55,681 INFO L225 Difference]: With dead ends: 525 [2021-10-07 15:11:55,682 INFO L226 Difference]: Without dead ends: 438 [2021-10-07 15:11:55,683 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 1629.7ms TimeCoverageRelationStatistics Valid=192, Invalid=1530, Unknown=0, NotChecked=0, Total=1722 [2021-10-07 15:11:55,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2021-10-07 15:11:55,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 357. [2021-10-07 15:11:55,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 345 states have (on average 2.5304347826086957) internal successors, (873), 356 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:55,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 873 transitions. [2021-10-07 15:11:55,693 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 873 transitions. Word has length 18 [2021-10-07 15:11:55,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:55,693 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 873 transitions. [2021-10-07 15:11:55,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:55,693 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 873 transitions. [2021-10-07 15:11:55,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:11:55,694 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:55,694 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:11:55,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-10-07 15:11:55,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-10-07 15:11:55,910 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:11:55,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:55,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1298658432, now seen corresponding path program 5 times [2021-10-07 15:11:55,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:55,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967799372] [2021-10-07 15:11:55,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:55,911 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:55,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:56,879 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:11:56,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:56,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967799372] [2021-10-07 15:11:56,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967799372] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:56,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855946671] [2021-10-07 15:11:56,880 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:11:56,880 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:56,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:11:56,882 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:11:56,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-10-07 15:11:57,378 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:11:57,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:11:57,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-07 15:11:57,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:11:57,631 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:11:57,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855946671] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:57,631 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:11:57,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6] total 20 [2021-10-07 15:11:57,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999404836] [2021-10-07 15:11:57,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-07 15:11:57,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:57,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-07 15:11:57,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2021-10-07 15:11:57,633 INFO L87 Difference]: Start difference. First operand 357 states and 873 transitions. Second operand has 22 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:59,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:59,295 INFO L93 Difference]: Finished difference Result 401 states and 908 transitions. [2021-10-07 15:11:59,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-07 15:11:59,296 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-07 15:11:59,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:59,298 INFO L225 Difference]: With dead ends: 401 [2021-10-07 15:11:59,298 INFO L226 Difference]: Without dead ends: 344 [2021-10-07 15:11:59,298 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 1478.2ms TimeCoverageRelationStatistics Valid=110, Invalid=1012, Unknown=0, NotChecked=0, Total=1122 [2021-10-07 15:11:59,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-10-07 15:11:59,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 302. [2021-10-07 15:11:59,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 290 states have (on average 2.6206896551724137) internal successors, (760), 301 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:59,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 760 transitions. [2021-10-07 15:11:59,306 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 760 transitions. Word has length 18 [2021-10-07 15:11:59,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:59,307 INFO L470 AbstractCegarLoop]: Abstraction has 302 states and 760 transitions. [2021-10-07 15:11:59,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:59,307 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 760 transitions. [2021-10-07 15:11:59,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:11:59,307 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:59,308 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:11:59,339 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2021-10-07 15:11:59,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:59,523 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:11:59,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:59,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1201303880, now seen corresponding path program 3 times [2021-10-07 15:11:59,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:59,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394706929] [2021-10-07 15:11:59,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:59,524 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:59,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:12:00,905 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:12:00,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:12:00,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394706929] [2021-10-07 15:12:00,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394706929] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:00,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744624303] [2021-10-07 15:12:00,906 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:12:00,906 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:00,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:12:00,907 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:12:00,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-10-07 15:12:01,411 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 15:12:01,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:12:01,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-07 15:12:01,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:12:01,653 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:12:01,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744624303] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:01,654 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:12:01,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 6] total 21 [2021-10-07 15:12:01,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188663142] [2021-10-07 15:12:01,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-07 15:12:01,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:12:01,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-07 15:12:01,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2021-10-07 15:12:01,656 INFO L87 Difference]: Start difference. First operand 302 states and 760 transitions. Second operand has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:12:03,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:12:03,497 INFO L93 Difference]: Finished difference Result 545 states and 1202 transitions. [2021-10-07 15:12:03,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-07 15:12:03,498 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-07 15:12:03,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:12:03,502 INFO L225 Difference]: With dead ends: 545 [2021-10-07 15:12:03,502 INFO L226 Difference]: Without dead ends: 495 [2021-10-07 15:12:03,503 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 1838.9ms TimeCoverageRelationStatistics Valid=196, Invalid=1526, Unknown=0, NotChecked=0, Total=1722 [2021-10-07 15:12:03,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2021-10-07 15:12:03,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 321. [2021-10-07 15:12:03,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 309 states have (on average 2.6893203883495147) internal successors, (831), 320 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:12:03,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 831 transitions. [2021-10-07 15:12:03,511 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 831 transitions. Word has length 18 [2021-10-07 15:12:03,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:12:03,512 INFO L470 AbstractCegarLoop]: Abstraction has 321 states and 831 transitions. [2021-10-07 15:12:03,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:12:03,512 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 831 transitions. [2021-10-07 15:12:03,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:12:03,512 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:12:03,513 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:12:03,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-10-07 15:12:03,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-10-07 15:12:03,728 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:12:03,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:12:03,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1184553650, now seen corresponding path program 4 times [2021-10-07 15:12:03,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:12:03,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935851479] [2021-10-07 15:12:03,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:12:03,730 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:12:03,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:12:04,837 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:12:04,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:12:04,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935851479] [2021-10-07 15:12:04,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935851479] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:04,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923458056] [2021-10-07 15:12:04,838 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:12:04,838 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:04,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:12:04,840 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:12:04,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-10-07 15:12:05,312 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:12:05,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:12:05,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-07 15:12:05,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:12:05,582 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:12:05,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923458056] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:05,583 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:12:05,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 7] total 21 [2021-10-07 15:12:05,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774236549] [2021-10-07 15:12:05,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-07 15:12:05,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:12:05,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-07 15:12:05,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2021-10-07 15:12:05,585 INFO L87 Difference]: Start difference. First operand 321 states and 831 transitions. Second operand has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:12:07,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:12:07,057 INFO L93 Difference]: Finished difference Result 524 states and 1222 transitions. [2021-10-07 15:12:07,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-07 15:12:07,057 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-07 15:12:07,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:12:07,061 INFO L225 Difference]: With dead ends: 524 [2021-10-07 15:12:07,061 INFO L226 Difference]: Without dead ends: 524 [2021-10-07 15:12:07,062 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1505.0ms TimeCoverageRelationStatistics Valid=126, Invalid=930, Unknown=0, NotChecked=0, Total=1056 [2021-10-07 15:12:07,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2021-10-07 15:12:07,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 349. [2021-10-07 15:12:07,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 337 states have (on average 2.71513353115727) internal successors, (915), 348 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:12:07,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 915 transitions. [2021-10-07 15:12:07,074 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 915 transitions. Word has length 18 [2021-10-07 15:12:07,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:12:07,075 INFO L470 AbstractCegarLoop]: Abstraction has 349 states and 915 transitions. [2021-10-07 15:12:07,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:12:07,075 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 915 transitions. [2021-10-07 15:12:07,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:12:07,076 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:12:07,076 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:12:07,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-10-07 15:12:07,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-10-07 15:12:07,290 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:12:07,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:12:07,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1184553649, now seen corresponding path program 3 times [2021-10-07 15:12:07,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:12:07,291 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859958190] [2021-10-07 15:12:07,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:12:07,292 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:12:07,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:12:08,658 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:12:08,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:12:08,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859958190] [2021-10-07 15:12:08,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859958190] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:08,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058384588] [2021-10-07 15:12:08,659 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:12:08,659 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:08,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:12:08,660 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:12:08,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-10-07 15:12:09,304 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 15:12:09,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:12:09,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 15:12:09,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:12:09,592 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-07 15:12:09,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058384588] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:09,593 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:12:09,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 4] total 19 [2021-10-07 15:12:09,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522234612] [2021-10-07 15:12:09,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-07 15:12:09,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:12:09,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-07 15:12:09,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2021-10-07 15:12:09,595 INFO L87 Difference]: Start difference. First operand 349 states and 915 transitions. Second operand has 21 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:12:11,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:12:11,360 INFO L93 Difference]: Finished difference Result 624 states and 1528 transitions. [2021-10-07 15:12:11,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-07 15:12:11,361 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-07 15:12:11,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:12:11,366 INFO L225 Difference]: With dead ends: 624 [2021-10-07 15:12:11,366 INFO L226 Difference]: Without dead ends: 610 [2021-10-07 15:12:11,367 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 1740.3ms TimeCoverageRelationStatistics Valid=173, Invalid=1233, Unknown=0, NotChecked=0, Total=1406 [2021-10-07 15:12:11,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2021-10-07 15:12:11,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 463. [2021-10-07 15:12:11,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 451 states have (on average 2.789356984478936) internal successors, (1258), 462 states have internal predecessors, (1258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:12:11,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 1258 transitions. [2021-10-07 15:12:11,379 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 1258 transitions. Word has length 18 [2021-10-07 15:12:11,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:12:11,379 INFO L470 AbstractCegarLoop]: Abstraction has 463 states and 1258 transitions. [2021-10-07 15:12:11,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:12:11,380 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 1258 transitions. [2021-10-07 15:12:11,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:12:11,380 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:12:11,380 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:12:11,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-10-07 15:12:11,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-10-07 15:12:11,594 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:12:11,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:12:11,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1183429280, now seen corresponding path program 5 times [2021-10-07 15:12:11,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:12:11,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83242205] [2021-10-07 15:12:11,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:12:11,595 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:12:11,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:12:12,267 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:12:12,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:12:12,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83242205] [2021-10-07 15:12:12,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83242205] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:12,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555060596] [2021-10-07 15:12:12,268 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:12:12,269 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:12,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:12:12,270 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:12:12,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-10-07 15:12:12,826 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:12:12,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:12:12,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-07 15:12:12,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:12:13,006 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:12:13,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555060596] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:13,007 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:12:13,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 15 [2021-10-07 15:12:13,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507947485] [2021-10-07 15:12:13,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-07 15:12:13,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:12:13,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-07 15:12:13,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:12:13,009 INFO L87 Difference]: Start difference. First operand 463 states and 1258 transitions. Second operand has 17 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:12:13,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:12:13,790 INFO L93 Difference]: Finished difference Result 771 states and 1920 transitions. [2021-10-07 15:12:13,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-07 15:12:13,790 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-07 15:12:13,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:12:13,794 INFO L225 Difference]: With dead ends: 771 [2021-10-07 15:12:13,795 INFO L226 Difference]: Without dead ends: 732 [2021-10-07 15:12:13,795 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 806.4ms TimeCoverageRelationStatistics Valid=146, Invalid=724, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:12:13,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2021-10-07 15:12:13,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 368. [2021-10-07 15:12:13,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 356 states have (on average 2.7331460674157304) internal successors, (973), 367 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:12:13,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 973 transitions. [2021-10-07 15:12:13,807 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 973 transitions. Word has length 18 [2021-10-07 15:12:13,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:12:13,807 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 973 transitions. [2021-10-07 15:12:13,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:12:13,807 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 973 transitions. [2021-10-07 15:12:13,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:12:13,808 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:12:13,808 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:12:13,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-10-07 15:12:14,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-10-07 15:12:14,022 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:12:14,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:12:14,022 INFO L82 PathProgramCache]: Analyzing trace with hash 877680922, now seen corresponding path program 4 times [2021-10-07 15:12:14,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:12:14,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932816267] [2021-10-07 15:12:14,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:12:14,023 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:12:14,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:12:14,429 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:12:14,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:12:14,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932816267] [2021-10-07 15:12:14,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932816267] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:14,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200887808] [2021-10-07 15:12:14,430 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:12:14,430 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:14,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:12:14,431 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:12:14,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-10-07 15:12:14,963 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:12:14,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:12:14,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-07 15:12:14,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:12:15,497 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:12:15,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200887808] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:15,497 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:12:15,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 19 [2021-10-07 15:12:15,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649933497] [2021-10-07 15:12:15,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-07 15:12:15,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:12:15,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-07 15:12:15,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2021-10-07 15:12:15,499 INFO L87 Difference]: Start difference. First operand 368 states and 973 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:12:16,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:12:16,353 INFO L93 Difference]: Finished difference Result 428 states and 1090 transitions. [2021-10-07 15:12:16,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-07 15:12:16,354 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:12:16,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:12:16,356 INFO L225 Difference]: With dead ends: 428 [2021-10-07 15:12:16,356 INFO L226 Difference]: Without dead ends: 403 [2021-10-07 15:12:16,357 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 877.8ms TimeCoverageRelationStatistics Valid=129, Invalid=801, Unknown=0, NotChecked=0, Total=930 [2021-10-07 15:12:16,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2021-10-07 15:12:16,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 397. [2021-10-07 15:12:16,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 385 states have (on average 2.7116883116883117) internal successors, (1044), 396 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:12:16,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 1044 transitions. [2021-10-07 15:12:16,367 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 1044 transitions. Word has length 20 [2021-10-07 15:12:16,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:12:16,367 INFO L470 AbstractCegarLoop]: Abstraction has 397 states and 1044 transitions. [2021-10-07 15:12:16,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:12:16,368 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 1044 transitions. [2021-10-07 15:12:16,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 15:12:16,368 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:12:16,368 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:12:16,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-10-07 15:12:16,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:16,582 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:12:16,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:12:16,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1494152069, now seen corresponding path program 4 times [2021-10-07 15:12:16,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:12:16,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535459667] [2021-10-07 15:12:16,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:12:16,583 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:12:16,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:12:16,657 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-07 15:12:16,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:12:16,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535459667] [2021-10-07 15:12:16,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535459667] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:16,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141778667] [2021-10-07 15:12:16,658 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:12:16,658 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:16,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:12:16,659 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:12:16,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-10-07 15:12:17,240 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:12:17,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:12:17,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:12:17,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:12:17,295 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-07 15:12:17,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141778667] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:17,295 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:12:17,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 4 [2021-10-07 15:12:17,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644053158] [2021-10-07 15:12:17,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:12:17,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:12:17,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:12:17,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:12:17,297 INFO L87 Difference]: Start difference. First operand 397 states and 1044 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:12:17,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:12:17,332 INFO L93 Difference]: Finished difference Result 629 states and 1602 transitions. [2021-10-07 15:12:17,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 15:12:17,333 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-07 15:12:17,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:12:17,336 INFO L225 Difference]: With dead ends: 629 [2021-10-07 15:12:17,336 INFO L226 Difference]: Without dead ends: 605 [2021-10-07 15:12:17,336 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 13.5ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:12:17,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2021-10-07 15:12:17,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 463. [2021-10-07 15:12:17,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 451 states have (on average 2.8758314855875833) internal successors, (1297), 462 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:12:17,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 1297 transitions. [2021-10-07 15:12:17,352 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 1297 transitions. Word has length 21 [2021-10-07 15:12:17,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:12:17,352 INFO L470 AbstractCegarLoop]: Abstraction has 463 states and 1297 transitions. [2021-10-07 15:12:17,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:12:17,352 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 1297 transitions. [2021-10-07 15:12:17,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 15:12:17,353 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:12:17,353 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:12:17,385 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2021-10-07 15:12:17,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-10-07 15:12:17,569 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:12:17,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:12:17,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1902870174, now seen corresponding path program 6 times [2021-10-07 15:12:17,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:12:17,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305811932] [2021-10-07 15:12:17,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:12:17,571 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:12:17,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:12:17,634 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-07 15:12:17,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:12:17,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305811932] [2021-10-07 15:12:17,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305811932] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:17,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408323171] [2021-10-07 15:12:17,635 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:12:17,635 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:17,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:12:17,636 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:12:17,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-10-07 15:12:18,172 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:12:18,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:12:18,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:12:18,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:12:18,220 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-07 15:12:18,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408323171] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:18,220 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:12:18,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-10-07 15:12:18,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32038443] [2021-10-07 15:12:18,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 15:12:18,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:12:18,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 15:12:18,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:12:18,222 INFO L87 Difference]: Start difference. First operand 463 states and 1297 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:12:18,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:12:18,243 INFO L93 Difference]: Finished difference Result 279 states and 606 transitions. [2021-10-07 15:12:18,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 15:12:18,243 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-07 15:12:18,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:12:18,245 INFO L225 Difference]: With dead ends: 279 [2021-10-07 15:12:18,245 INFO L226 Difference]: Without dead ends: 269 [2021-10-07 15:12:18,245 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.5ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:12:18,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2021-10-07 15:12:18,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 231. [2021-10-07 15:12:18,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 219 states have (on average 2.2465753424657535) internal successors, (492), 230 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:12:18,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 492 transitions. [2021-10-07 15:12:18,252 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 492 transitions. Word has length 21 [2021-10-07 15:12:18,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:12:18,254 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 492 transitions. [2021-10-07 15:12:18,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:12:18,254 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 492 transitions. [2021-10-07 15:12:18,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 15:12:18,255 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:12:18,255 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:12:18,285 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2021-10-07 15:12:18,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:18,470 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:12:18,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:12:18,471 INFO L82 PathProgramCache]: Analyzing trace with hash -98441377, now seen corresponding path program 5 times [2021-10-07 15:12:18,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:12:18,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336175327] [2021-10-07 15:12:18,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:12:18,472 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:12:18,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:12:19,835 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:12:19,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:12:19,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336175327] [2021-10-07 15:12:19,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336175327] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:19,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161565820] [2021-10-07 15:12:19,836 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:12:19,836 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:19,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:12:19,837 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:12:19,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-10-07 15:12:20,430 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:12:20,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:12:20,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-07 15:12:20,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:12:20,716 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-07 15:12:20,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161565820] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:20,717 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:12:20,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 5] total 23 [2021-10-07 15:12:20,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10727519] [2021-10-07 15:12:20,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-07 15:12:20,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:12:20,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-07 15:12:20,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:12:20,718 INFO L87 Difference]: Start difference. First operand 231 states and 492 transitions. Second operand has 25 states, 24 states have (on average 1.625) internal successors, (39), 24 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:12:22,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:12:22,411 INFO L93 Difference]: Finished difference Result 294 states and 585 transitions. [2021-10-07 15:12:22,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-07 15:12:22,411 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.625) internal successors, (39), 24 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-07 15:12:22,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:12:22,413 INFO L225 Difference]: With dead ends: 294 [2021-10-07 15:12:22,413 INFO L226 Difference]: Without dead ends: 246 [2021-10-07 15:12:22,414 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 1857.2ms TimeCoverageRelationStatistics Valid=192, Invalid=1614, Unknown=0, NotChecked=0, Total=1806 [2021-10-07 15:12:22,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2021-10-07 15:12:22,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 206. [2021-10-07 15:12:22,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 194 states have (on average 2.3092783505154637) internal successors, (448), 205 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:12:22,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 448 transitions. [2021-10-07 15:12:22,417 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 448 transitions. Word has length 21 [2021-10-07 15:12:22,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:12:22,418 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 448 transitions. [2021-10-07 15:12:22,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.625) internal successors, (39), 24 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:12:22,418 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 448 transitions. [2021-10-07 15:12:22,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:12:22,419 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:12:22,419 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:12:22,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-10-07 15:12:22,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-10-07 15:12:22,635 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:12:22,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:12:22,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1342802983, now seen corresponding path program 5 times [2021-10-07 15:12:22,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:12:22,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24672907] [2021-10-07 15:12:22,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:12:22,637 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:12:22,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:12:23,112 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:12:23,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:12:23,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24672907] [2021-10-07 15:12:23,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24672907] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:23,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522019868] [2021-10-07 15:12:23,113 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:12:23,113 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:23,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:12:23,119 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:12:23,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-10-07 15:12:23,727 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:12:23,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:12:23,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 50 conjunts are in the unsatisfiable core [2021-10-07 15:12:23,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:12:23,837 INFO L354 Elim1Store]: treesize reduction 244, result has 14.7 percent of original size [2021-10-07 15:12:23,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 47 [2021-10-07 15:12:24,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:12:25,002 INFO L354 Elim1Store]: treesize reduction 104, result has 35.4 percent of original size [2021-10-07 15:12:25,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 20 case distinctions, treesize of input 52 treesize of output 94 [2021-10-07 15:12:25,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-07 15:12:25,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-07 15:12:25,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-07 15:12:25,877 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:12:25,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522019868] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:25,877 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:12:25,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 26 [2021-10-07 15:12:25,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961550342] [2021-10-07 15:12:25,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-07 15:12:25,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:12:25,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-07 15:12:25,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=662, Unknown=0, NotChecked=0, Total=756 [2021-10-07 15:12:25,880 INFO L87 Difference]: Start difference. First operand 206 states and 448 transitions. Second operand has 28 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 27 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:12:27,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:12:27,453 INFO L93 Difference]: Finished difference Result 470 states and 998 transitions. [2021-10-07 15:12:27,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-07 15:12:27,453 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 27 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-07 15:12:27,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:12:27,457 INFO L225 Difference]: With dead ends: 470 [2021-10-07 15:12:27,457 INFO L226 Difference]: Without dead ends: 452 [2021-10-07 15:12:27,458 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 1462.5ms TimeCoverageRelationStatistics Valid=239, Invalid=1831, Unknown=0, NotChecked=0, Total=2070 [2021-10-07 15:12:27,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2021-10-07 15:12:27,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 346. [2021-10-07 15:12:27,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 334 states have (on average 2.3263473053892216) internal successors, (777), 345 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:12:27,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 777 transitions. [2021-10-07 15:12:27,466 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 777 transitions. Word has length 23 [2021-10-07 15:12:27,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:12:27,466 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 777 transitions. [2021-10-07 15:12:27,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 27 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:12:27,467 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 777 transitions. [2021-10-07 15:12:27,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:12:27,467 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:12:27,468 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:12:27,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2021-10-07 15:12:27,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:27,677 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:12:27,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:12:27,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1342803010, now seen corresponding path program 6 times [2021-10-07 15:12:27,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:12:27,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343206254] [2021-10-07 15:12:27,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:12:27,679 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:12:27,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:12:28,247 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:12:28,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:12:28,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343206254] [2021-10-07 15:12:28,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343206254] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:28,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195831847] [2021-10-07 15:12:28,248 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:12:28,248 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:28,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:12:28,252 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:12:28,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-10-07 15:12:28,952 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:12:28,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:12:28,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 42 conjunts are in the unsatisfiable core [2021-10-07 15:12:28,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:12:29,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-07 15:12:29,294 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-07 15:12:29,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-07 15:12:29,374 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-07 15:12:29,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-07 15:12:29,801 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:12:29,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195831847] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:29,802 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:12:29,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 27 [2021-10-07 15:12:29,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954965044] [2021-10-07 15:12:29,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-10-07 15:12:29,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:12:29,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-10-07 15:12:29,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=720, Unknown=0, NotChecked=0, Total=812 [2021-10-07 15:12:29,804 INFO L87 Difference]: Start difference. First operand 346 states and 777 transitions. Second operand has 29 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 28 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:12:31,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:12:31,100 INFO L93 Difference]: Finished difference Result 574 states and 1235 transitions. [2021-10-07 15:12:31,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-07 15:12:31,101 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 28 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-07 15:12:31,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:12:31,104 INFO L225 Difference]: With dead ends: 574 [2021-10-07 15:12:31,104 INFO L226 Difference]: Without dead ends: 562 [2021-10-07 15:12:31,105 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 1227.9ms TimeCoverageRelationStatistics Valid=178, Invalid=1382, Unknown=0, NotChecked=0, Total=1560 [2021-10-07 15:12:31,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-10-07 15:12:31,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 430. [2021-10-07 15:12:31,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 418 states have (on average 2.3301435406698565) internal successors, (974), 429 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:12:31,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 974 transitions. [2021-10-07 15:12:31,114 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 974 transitions. Word has length 23 [2021-10-07 15:12:31,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:12:31,114 INFO L470 AbstractCegarLoop]: Abstraction has 430 states and 974 transitions. [2021-10-07 15:12:31,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 28 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:12:31,115 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 974 transitions. [2021-10-07 15:12:31,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:12:31,115 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:12:31,116 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:12:31,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2021-10-07 15:12:31,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,40 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:31,316 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:12:31,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:12:31,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1344355180, now seen corresponding path program 7 times [2021-10-07 15:12:31,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:12:31,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694635101] [2021-10-07 15:12:31,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:12:31,318 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:12:31,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:12:31,772 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:12:31,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:12:31,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694635101] [2021-10-07 15:12:31,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694635101] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:31,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45183904] [2021-10-07 15:12:31,773 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:12:31,773 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:31,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:12:31,774 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:12:31,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-10-07 15:12:32,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:12:32,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-07 15:12:32,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:12:32,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-07 15:12:32,804 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:12:32,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-07 15:12:32,902 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:12:32,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-07 15:12:33,510 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:12:33,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45183904] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:33,510 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:12:33,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 27 [2021-10-07 15:12:33,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370656752] [2021-10-07 15:12:33,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-10-07 15:12:33,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:12:33,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-10-07 15:12:33,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=739, Unknown=0, NotChecked=0, Total=812 [2021-10-07 15:12:33,512 INFO L87 Difference]: Start difference. First operand 430 states and 974 transitions. Second operand has 29 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 28 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:12:35,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:12:35,647 INFO L93 Difference]: Finished difference Result 564 states and 1203 transitions. [2021-10-07 15:12:35,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 15:12:35,648 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 28 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-07 15:12:35,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:12:35,650 INFO L225 Difference]: With dead ends: 564 [2021-10-07 15:12:35,650 INFO L226 Difference]: Without dead ends: 524 [2021-10-07 15:12:35,651 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 2003.3ms TimeCoverageRelationStatistics Valid=240, Invalid=2016, Unknown=0, NotChecked=0, Total=2256 [2021-10-07 15:12:35,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2021-10-07 15:12:35,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 454. [2021-10-07 15:12:35,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 442 states have (on average 2.3076923076923075) internal successors, (1020), 453 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:12:35,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 1020 transitions. [2021-10-07 15:12:35,659 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 1020 transitions. Word has length 23 [2021-10-07 15:12:35,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:12:35,659 INFO L470 AbstractCegarLoop]: Abstraction has 454 states and 1020 transitions. [2021-10-07 15:12:35,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 28 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:12:35,660 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 1020 transitions. [2021-10-07 15:12:35,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:12:35,660 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:12:35,661 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:12:35,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2021-10-07 15:12:35,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-10-07 15:12:35,869 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:12:35,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:12:35,870 INFO L82 PathProgramCache]: Analyzing trace with hash -997723719, now seen corresponding path program 7 times [2021-10-07 15:12:35,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:12:35,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413327480] [2021-10-07 15:12:35,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:12:35,871 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:12:35,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:12:36,165 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:12:36,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:12:36,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413327480] [2021-10-07 15:12:36,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413327480] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:36,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417979380] [2021-10-07 15:12:36,166 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:12:36,166 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:36,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:12:36,167 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:12:36,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-10-07 15:12:36,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:12:36,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 56 conjunts are in the unsatisfiable core [2021-10-07 15:12:36,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:12:37,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-07 15:12:37,233 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-10-07 15:12:37,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 49 [2021-10-07 15:12:37,389 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:12:37,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 47 [2021-10-07 15:12:37,547 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:12:37,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 44 [2021-10-07 15:12:38,666 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:12:38,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417979380] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:38,666 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:12:38,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 17] total 28 [2021-10-07 15:12:38,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575969726] [2021-10-07 15:12:38,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-07 15:12:38,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:12:38,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-07 15:12:38,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=797, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:12:38,668 INFO L87 Difference]: Start difference. First operand 454 states and 1020 transitions. Second operand has 30 states, 29 states have (on average 1.4827586206896552) internal successors, (43), 29 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:13:00,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:13:00,870 INFO L93 Difference]: Finished difference Result 730 states and 1598 transitions. [2021-10-07 15:13:00,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-10-07 15:13:00,870 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.4827586206896552) internal successors, (43), 29 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-07 15:13:00,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:13:00,874 INFO L225 Difference]: With dead ends: 730 [2021-10-07 15:13:00,875 INFO L226 Difference]: Without dead ends: 660 [2021-10-07 15:13:00,877 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1211 ImplicationChecksByTransitivity, 4150.9ms TimeCoverageRelationStatistics Valid=500, Invalid=5050, Unknown=0, NotChecked=0, Total=5550 [2021-10-07 15:13:00,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2021-10-07 15:13:00,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 478. [2021-10-07 15:13:00,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 466 states have (on average 2.2703862660944205) internal successors, (1058), 477 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:13:00,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 1058 transitions. [2021-10-07 15:13:00,894 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 1058 transitions. Word has length 23 [2021-10-07 15:13:00,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:13:00,894 INFO L470 AbstractCegarLoop]: Abstraction has 478 states and 1058 transitions. [2021-10-07 15:13:00,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.4827586206896552) internal successors, (43), 29 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:13:00,894 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 1058 transitions. [2021-10-07 15:13:00,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:13:00,895 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:13:00,895 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:13:00,922 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2021-10-07 15:13:01,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-10-07 15:13:01,096 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:13:01,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:13:01,097 INFO L82 PathProgramCache]: Analyzing trace with hash -997723718, now seen corresponding path program 6 times [2021-10-07 15:13:01,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:13:01,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499914153] [2021-10-07 15:13:01,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:13:01,098 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:13:01,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:13:01,481 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:13:01,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:13:01,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499914153] [2021-10-07 15:13:01,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499914153] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:01,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359970493] [2021-10-07 15:13:01,482 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:13:01,482 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:13:01,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:13:01,483 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:13:01,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-10-07 15:13:02,306 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:13:02,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:13:02,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-07 15:13:02,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:13:02,803 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:13:02,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359970493] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:02,803 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:13:02,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 20 [2021-10-07 15:13:02,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750849974] [2021-10-07 15:13:02,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-07 15:13:02,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:13:02,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-07 15:13:02,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2021-10-07 15:13:02,805 INFO L87 Difference]: Start difference. First operand 478 states and 1058 transitions. Second operand has 22 states, 21 states have (on average 2.0) internal successors, (42), 21 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:13:04,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:13:04,184 INFO L93 Difference]: Finished difference Result 1054 states and 2206 transitions. [2021-10-07 15:13:04,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-07 15:13:04,185 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.0) internal successors, (42), 21 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-07 15:13:04,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:13:04,190 INFO L225 Difference]: With dead ends: 1054 [2021-10-07 15:13:04,190 INFO L226 Difference]: Without dead ends: 1036 [2021-10-07 15:13:04,191 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 1181.3ms TimeCoverageRelationStatistics Valid=213, Invalid=1119, Unknown=0, NotChecked=0, Total=1332 [2021-10-07 15:13:04,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2021-10-07 15:13:04,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 776. [2021-10-07 15:13:04,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 764 states have (on average 2.2657068062827226) internal successors, (1731), 775 states have internal predecessors, (1731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:13:04,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 1731 transitions. [2021-10-07 15:13:04,207 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 1731 transitions. Word has length 23 [2021-10-07 15:13:04,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:13:04,207 INFO L470 AbstractCegarLoop]: Abstraction has 776 states and 1731 transitions. [2021-10-07 15:13:04,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.0) internal successors, (42), 21 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:13:04,208 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 1731 transitions. [2021-10-07 15:13:04,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:13:04,209 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:13:04,209 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:13:04,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2021-10-07 15:13:04,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-10-07 15:13:04,423 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:13:04,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:13:04,423 INFO L82 PathProgramCache]: Analyzing trace with hash -979421319, now seen corresponding path program 8 times [2021-10-07 15:13:04,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:13:04,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354193195] [2021-10-07 15:13:04,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:13:04,425 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:13:04,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:13:04,744 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:13:04,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:13:04,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354193195] [2021-10-07 15:13:04,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354193195] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:04,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373000803] [2021-10-07 15:13:04,745 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:13:04,745 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:13:04,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:13:04,751 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:13:04,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-10-07 15:13:05,501 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:13:05,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:13:05,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-07 15:13:05,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:13:05,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:13:05,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:13:05,612 INFO L354 Elim1Store]: treesize reduction 214, result has 14.7 percent of original size [2021-10-07 15:13:05,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 21 treesize of output 47 [2021-10-07 15:13:06,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-07 15:13:06,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:13:06,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:13:06,754 INFO L354 Elim1Store]: treesize reduction 92, result has 39.9 percent of original size [2021-10-07 15:13:06,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 19 case distinctions, treesize of input 52 treesize of output 98 [2021-10-07 15:13:06,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 36 [2021-10-07 15:13:06,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 36 [2021-10-07 15:13:07,036 INFO L354 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2021-10-07 15:13:07,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 48 [2021-10-07 15:13:07,105 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:13:07,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-07 15:13:07,203 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:13:07,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-07 15:13:07,581 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:13:07,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373000803] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:07,582 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:13:07,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2021-10-07 15:13:07,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988371374] [2021-10-07 15:13:07,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-07 15:13:07,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:13:07,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-07 15:13:07,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2021-10-07 15:13:07,584 INFO L87 Difference]: Start difference. First operand 776 states and 1731 transitions. Second operand has 24 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 23 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:13:09,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:13:09,298 INFO L93 Difference]: Finished difference Result 838 states and 1778 transitions. [2021-10-07 15:13:09,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-07 15:13:09,299 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 23 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-07 15:13:09,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:13:09,302 INFO L225 Difference]: With dead ends: 838 [2021-10-07 15:13:09,302 INFO L226 Difference]: Without dead ends: 794 [2021-10-07 15:13:09,302 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 1572.5ms TimeCoverageRelationStatistics Valid=195, Invalid=1211, Unknown=0, NotChecked=0, Total=1406 [2021-10-07 15:13:09,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2021-10-07 15:13:09,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 596. [2021-10-07 15:13:09,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 584 states have (on average 2.220890410958904) internal successors, (1297), 595 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:13:09,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 1297 transitions. [2021-10-07 15:13:09,314 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 1297 transitions. Word has length 23 [2021-10-07 15:13:09,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:13:09,314 INFO L470 AbstractCegarLoop]: Abstraction has 596 states and 1297 transitions. [2021-10-07 15:13:09,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 23 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:13:09,314 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 1297 transitions. [2021-10-07 15:13:09,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:13:09,315 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:13:09,315 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:13:09,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2021-10-07 15:13:09,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,44 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:13:09,516 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:13:09,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:13:09,517 INFO L82 PathProgramCache]: Analyzing trace with hash -979421318, now seen corresponding path program 7 times [2021-10-07 15:13:09,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:13:09,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808895017] [2021-10-07 15:13:09,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:13:09,518 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:13:09,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:13:09,816 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:13:09,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:13:09,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808895017] [2021-10-07 15:13:09,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808895017] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:09,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56001742] [2021-10-07 15:13:09,817 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:13:09,817 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:13:09,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:13:09,818 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:13:09,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-10-07 15:13:10,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:13:10,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-07 15:13:10,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:13:10,855 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-07 15:13:10,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56001742] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:10,856 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:13:10,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 17 [2021-10-07 15:13:10,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770514125] [2021-10-07 15:13:10,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 15:13:10,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:13:10,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 15:13:10,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-10-07 15:13:10,858 INFO L87 Difference]: Start difference. First operand 596 states and 1297 transitions. Second operand has 19 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 18 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:13:11,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:13:11,673 INFO L93 Difference]: Finished difference Result 582 states and 1202 transitions. [2021-10-07 15:13:11,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-07 15:13:11,674 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 18 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-07 15:13:11,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:13:11,676 INFO L225 Difference]: With dead ends: 582 [2021-10-07 15:13:11,677 INFO L226 Difference]: Without dead ends: 562 [2021-10-07 15:13:11,677 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 712.7ms TimeCoverageRelationStatistics Valid=156, Invalid=900, Unknown=0, NotChecked=0, Total=1056 [2021-10-07 15:13:11,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-10-07 15:13:11,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 558. [2021-10-07 15:13:11,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 550 states have (on average 2.12) internal successors, (1166), 557 states have internal predecessors, (1166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:13:11,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 1166 transitions. [2021-10-07 15:13:11,688 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 1166 transitions. Word has length 23 [2021-10-07 15:13:11,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:13:11,688 INFO L470 AbstractCegarLoop]: Abstraction has 558 states and 1166 transitions. [2021-10-07 15:13:11,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 18 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:13:11,689 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 1166 transitions. [2021-10-07 15:13:11,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:13:11,690 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:13:11,690 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:13:11,721 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2021-10-07 15:13:11,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,45 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:13:11,903 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:13:11,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:13:11,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1132472902, now seen corresponding path program 8 times [2021-10-07 15:13:11,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:13:11,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134662755] [2021-10-07 15:13:11,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:13:11,905 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:13:11,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:13:12,346 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:13:12,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:13:12,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134662755] [2021-10-07 15:13:12,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134662755] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:12,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82493511] [2021-10-07 15:13:12,347 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:13:12,347 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:13:12,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:13:12,348 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:13:12,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-10-07 15:13:13,131 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:13:13,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:13:13,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-07 15:13:13,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:13:13,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-07 15:13:13,474 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:13:13,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-07 15:13:13,643 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:13:13,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-07 15:13:14,047 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:13:14,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82493511] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:14,048 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:13:14,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 26 [2021-10-07 15:13:14,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031889373] [2021-10-07 15:13:14,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-07 15:13:14,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:13:14,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-07 15:13:14,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=680, Unknown=0, NotChecked=0, Total=756 [2021-10-07 15:13:14,049 INFO L87 Difference]: Start difference. First operand 558 states and 1166 transitions. Second operand has 28 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 27 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:13:16,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:13:16,092 INFO L93 Difference]: Finished difference Result 764 states and 1507 transitions. [2021-10-07 15:13:16,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-07 15:13:16,093 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 27 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-07 15:13:16,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:13:16,095 INFO L225 Difference]: With dead ends: 764 [2021-10-07 15:13:16,095 INFO L226 Difference]: Without dead ends: 580 [2021-10-07 15:13:16,096 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 1961.9ms TimeCoverageRelationStatistics Valid=286, Invalid=2066, Unknown=0, NotChecked=0, Total=2352 [2021-10-07 15:13:16,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2021-10-07 15:13:16,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 426. [2021-10-07 15:13:16,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 418 states have (on average 2.117224880382775) internal successors, (885), 425 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:13:16,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 885 transitions. [2021-10-07 15:13:16,106 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 885 transitions. Word has length 23 [2021-10-07 15:13:16,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:13:16,106 INFO L470 AbstractCegarLoop]: Abstraction has 426 states and 885 transitions. [2021-10-07 15:13:16,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 27 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:13:16,106 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 885 transitions. [2021-10-07 15:13:16,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:13:16,107 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:13:16,107 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:13:16,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2021-10-07 15:13:16,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,46 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:13:16,321 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:13:16,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:13:16,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1150775302, now seen corresponding path program 9 times [2021-10-07 15:13:16,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:13:16,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127252526] [2021-10-07 15:13:16,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:13:16,322 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:13:16,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:13:16,864 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:13:16,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:13:16,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127252526] [2021-10-07 15:13:16,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127252526] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:16,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707217936] [2021-10-07 15:13:16,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:13:16,865 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:13:16,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:13:16,866 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:13:16,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-10-07 15:13:17,719 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 15:13:17,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:13:17,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 49 conjunts are in the unsatisfiable core [2021-10-07 15:13:17,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:13:17,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-07 15:13:17,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-07 15:13:18,028 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-07 15:13:18,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-07 15:13:18,160 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-07 15:13:18,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-07 15:13:18,673 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-07 15:13:18,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707217936] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:18,674 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:13:18,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 27 [2021-10-07 15:13:18,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308488244] [2021-10-07 15:13:18,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-10-07 15:13:18,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:13:18,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-10-07 15:13:18,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=719, Unknown=0, NotChecked=0, Total=812 [2021-10-07 15:13:18,676 INFO L87 Difference]: Start difference. First operand 426 states and 885 transitions. Second operand has 29 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 28 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:13:21,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:13:21,071 INFO L93 Difference]: Finished difference Result 478 states and 965 transitions. [2021-10-07 15:13:21,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-07 15:13:21,072 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 28 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-07 15:13:21,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:13:21,074 INFO L225 Difference]: With dead ends: 478 [2021-10-07 15:13:21,074 INFO L226 Difference]: Without dead ends: 444 [2021-10-07 15:13:21,074 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 2513.3ms TimeCoverageRelationStatistics Valid=346, Invalid=1816, Unknown=0, NotChecked=0, Total=2162 [2021-10-07 15:13:21,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-10-07 15:13:21,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 384. [2021-10-07 15:13:21,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 376 states have (on average 2.154255319148936) internal successors, (810), 383 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:13:21,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 810 transitions. [2021-10-07 15:13:21,080 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 810 transitions. Word has length 23 [2021-10-07 15:13:21,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:13:21,080 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 810 transitions. [2021-10-07 15:13:21,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 28 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:13:21,080 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 810 transitions. [2021-10-07 15:13:21,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:13:21,081 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:13:21,081 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:13:21,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2021-10-07 15:13:21,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,47 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:13:21,281 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:13:21,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:13:21,282 INFO L82 PathProgramCache]: Analyzing trace with hash 2042235065, now seen corresponding path program 6 times [2021-10-07 15:13:21,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:13:21,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13170965] [2021-10-07 15:13:21,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:13:21,283 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:13:21,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:13:24,342 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:13:24,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:13:24,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13170965] [2021-10-07 15:13:24,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13170965] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:24,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956041983] [2021-10-07 15:13:24,343 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:13:24,343 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:13:24,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:13:24,344 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:13:24,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2021-10-07 15:13:25,242 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:13:25,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:13:25,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-07 15:13:25,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:13:25,598 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-10-07 15:13:25,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956041983] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:25,599 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:13:25,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 5] total 26 [2021-10-07 15:13:25,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105528239] [2021-10-07 15:13:25,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-07 15:13:25,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:13:25,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-07 15:13:25,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=688, Unknown=0, NotChecked=0, Total=756 [2021-10-07 15:13:25,601 INFO L87 Difference]: Start difference. First operand 384 states and 810 transitions. Second operand has 28 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 27 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:13:28,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:13:28,655 INFO L93 Difference]: Finished difference Result 439 states and 897 transitions. [2021-10-07 15:13:28,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-07 15:13:28,655 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 27 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-07 15:13:28,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:13:28,657 INFO L225 Difference]: With dead ends: 439 [2021-10-07 15:13:28,657 INFO L226 Difference]: Without dead ends: 439 [2021-10-07 15:13:28,658 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 3693.6ms TimeCoverageRelationStatistics Valid=252, Invalid=2504, Unknown=0, NotChecked=0, Total=2756 [2021-10-07 15:13:28,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2021-10-07 15:13:28,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 370. [2021-10-07 15:13:28,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 365 states have (on average 2.0931506849315067) internal successors, (764), 369 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:13:28,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 764 transitions. [2021-10-07 15:13:28,664 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 764 transitions. Word has length 24 [2021-10-07 15:13:28,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:13:28,664 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 764 transitions. [2021-10-07 15:13:28,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 27 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:13:28,664 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 764 transitions. [2021-10-07 15:13:28,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:13:28,665 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:13:28,665 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:13:28,692 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2021-10-07 15:13:28,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2021-10-07 15:13:28,866 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:13:28,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:13:28,866 INFO L82 PathProgramCache]: Analyzing trace with hash 2042235092, now seen corresponding path program 10 times [2021-10-07 15:13:28,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:13:28,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935916943] [2021-10-07 15:13:28,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:13:28,868 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:13:28,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:13:29,731 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:13:29,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:13:29,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935916943] [2021-10-07 15:13:29,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935916943] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:29,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530644707] [2021-10-07 15:13:29,733 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:13:29,733 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:13:29,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:13:29,739 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:13:29,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2021-10-07 15:13:30,663 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:13:30,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:13:30,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-07 15:13:30,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:13:30,915 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-07 15:13:30,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530644707] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:30,916 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:13:30,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 6] total 25 [2021-10-07 15:13:30,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515631351] [2021-10-07 15:13:30,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-07 15:13:30,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:13:30,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-07 15:13:30,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2021-10-07 15:13:30,918 INFO L87 Difference]: Start difference. First operand 370 states and 764 transitions. Second operand has 27 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:13:32,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:13:32,323 INFO L93 Difference]: Finished difference Result 448 states and 905 transitions. [2021-10-07 15:13:32,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-07 15:13:32,323 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-07 15:13:32,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:13:32,325 INFO L225 Difference]: With dead ends: 448 [2021-10-07 15:13:32,325 INFO L226 Difference]: Without dead ends: 440 [2021-10-07 15:13:32,326 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 1505.2ms TimeCoverageRelationStatistics Valid=226, Invalid=1936, Unknown=0, NotChecked=0, Total=2162 [2021-10-07 15:13:32,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-10-07 15:13:32,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 364. [2021-10-07 15:13:32,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 359 states have (on average 2.103064066852368) internal successors, (755), 363 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:13:32,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 755 transitions. [2021-10-07 15:13:32,332 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 755 transitions. Word has length 24 [2021-10-07 15:13:32,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:13:32,333 INFO L470 AbstractCegarLoop]: Abstraction has 364 states and 755 transitions. [2021-10-07 15:13:32,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:13:32,333 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 755 transitions. [2021-10-07 15:13:32,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:13:32,333 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:13:32,334 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:13:32,360 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2021-10-07 15:13:32,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-10-07 15:13:32,534 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:13:32,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:13:32,535 INFO L82 PathProgramCache]: Analyzing trace with hash 2043787262, now seen corresponding path program 11 times [2021-10-07 15:13:32,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:13:32,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22016657] [2021-10-07 15:13:32,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:13:32,536 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:13:32,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:13:33,685 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:13:33,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:13:33,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22016657] [2021-10-07 15:13:33,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22016657] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:33,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510951459] [2021-10-07 15:13:33,686 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:13:33,686 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:13:33,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:13:33,690 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:13:33,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2021-10-07 15:13:34,642 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-07 15:13:34,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:13:34,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-07 15:13:34,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:13:35,020 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-07 15:13:35,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510951459] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:35,021 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:13:35,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 9] total 26 [2021-10-07 15:13:35,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514324420] [2021-10-07 15:13:35,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-07 15:13:35,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:13:35,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-07 15:13:35,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=685, Unknown=0, NotChecked=0, Total=756 [2021-10-07 15:13:35,023 INFO L87 Difference]: Start difference. First operand 364 states and 755 transitions. Second operand has 28 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 27 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:13:37,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:13:37,103 INFO L93 Difference]: Finished difference Result 499 states and 986 transitions. [2021-10-07 15:13:37,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-07 15:13:37,104 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 27 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-07 15:13:37,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:13:37,105 INFO L225 Difference]: With dead ends: 499 [2021-10-07 15:13:37,105 INFO L226 Difference]: Without dead ends: 301 [2021-10-07 15:13:37,105 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 2403.3ms TimeCoverageRelationStatistics Valid=292, Invalid=2360, Unknown=0, NotChecked=0, Total=2652 [2021-10-07 15:13:37,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2021-10-07 15:13:37,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 206. [2021-10-07 15:13:37,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 204 states have (on average 2.053921568627451) internal successors, (419), 205 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:13:37,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 419 transitions. [2021-10-07 15:13:37,109 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 419 transitions. Word has length 24 [2021-10-07 15:13:37,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:13:37,109 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 419 transitions. [2021-10-07 15:13:37,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 27 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:13:37,109 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 419 transitions. [2021-10-07 15:13:37,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:13:37,110 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:13:37,110 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:13:37,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2021-10-07 15:13:37,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-10-07 15:13:37,311 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:13:37,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:13:37,311 INFO L82 PathProgramCache]: Analyzing trace with hash 798852558, now seen corresponding path program 9 times [2021-10-07 15:13:37,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:13:37,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484363254] [2021-10-07 15:13:37,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:13:37,312 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:13:37,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:13:38,310 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:13:38,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:13:38,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484363254] [2021-10-07 15:13:38,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484363254] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:38,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869894720] [2021-10-07 15:13:38,311 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:13:38,311 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:13:38,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:13:38,312 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:13:38,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2021-10-07 15:13:39,278 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 15:13:39,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:13:39,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 43 conjunts are in the unsatisfiable core [2021-10-07 15:13:39,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:13:39,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:13:39,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:13:39,400 INFO L354 Elim1Store]: treesize reduction 214, result has 14.7 percent of original size [2021-10-07 15:13:39,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 21 treesize of output 47 [2021-10-07 15:13:39,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-10-07 15:13:40,103 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-10-07 15:13:40,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-07 15:13:40,423 INFO L354 Elim1Store]: treesize reduction 56, result has 23.3 percent of original size [2021-10-07 15:13:40,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 41 [2021-10-07 15:13:40,769 INFO L354 Elim1Store]: treesize reduction 104, result has 20.0 percent of original size [2021-10-07 15:13:40,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 55 [2021-10-07 15:13:40,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:13:40,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:13:41,036 INFO L354 Elim1Store]: treesize reduction 92, result has 39.9 percent of original size [2021-10-07 15:13:41,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 19 case distinctions, treesize of input 52 treesize of output 98 [2021-10-07 15:13:41,242 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-10-07 15:13:41,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 66 [2021-10-07 15:13:41,289 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-10-07 15:13:41,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 66 [2021-10-07 15:13:41,364 INFO L354 Elim1Store]: treesize reduction 212, result has 14.2 percent of original size [2021-10-07 15:13:41,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 70 treesize of output 78 [2021-10-07 15:13:41,506 INFO L354 Elim1Store]: treesize reduction 180, result has 16.3 percent of original size [2021-10-07 15:13:41,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 59 treesize of output 67 [2021-10-07 15:13:41,664 INFO L354 Elim1Store]: treesize reduction 180, result has 16.3 percent of original size [2021-10-07 15:13:41,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 59 treesize of output 67 [2021-10-07 15:13:41,931 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-07 15:13:41,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869894720] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:41,932 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:13:41,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 24 [2021-10-07 15:13:41,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270747574] [2021-10-07 15:13:41,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-07 15:13:41,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:13:41,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-07 15:13:41,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=579, Unknown=0, NotChecked=0, Total=650 [2021-10-07 15:13:41,933 INFO L87 Difference]: Start difference. First operand 206 states and 419 transitions. Second operand has 26 states, 25 states have (on average 1.6) internal successors, (40), 25 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:13:44,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:13:44,017 INFO L93 Difference]: Finished difference Result 431 states and 847 transitions. [2021-10-07 15:13:44,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 15:13:44,018 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.6) internal successors, (40), 25 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-07 15:13:44,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:13:44,018 INFO L225 Difference]: With dead ends: 431 [2021-10-07 15:13:44,018 INFO L226 Difference]: Without dead ends: 207 [2021-10-07 15:13:44,019 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 2574.9ms TimeCoverageRelationStatistics Valid=188, Invalid=1144, Unknown=0, NotChecked=0, Total=1332 [2021-10-07 15:13:44,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-10-07 15:13:44,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2021-10-07 15:13:44,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 205 states have (on average 2.048780487804878) internal successors, (420), 206 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:13:44,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 420 transitions. [2021-10-07 15:13:44,023 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 420 transitions. Word has length 24 [2021-10-07 15:13:44,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:13:44,024 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 420 transitions. [2021-10-07 15:13:44,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.6) internal successors, (40), 25 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:13:44,024 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 420 transitions. [2021-10-07 15:13:44,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:13:44,025 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:13:44,025 INFO L512 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:13:44,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2021-10-07 15:13:44,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,51 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:13:44,228 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:13:44,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:13:44,228 INFO L82 PathProgramCache]: Analyzing trace with hash 610025027, now seen corresponding path program 10 times [2021-10-07 15:13:44,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:13:44,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494463095] [2021-10-07 15:13:44,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:13:44,229 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:13:44,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:13:45,450 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:13:45,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:13:45,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494463095] [2021-10-07 15:13:45,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494463095] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:45,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602358370] [2021-10-07 15:13:45,451 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:13:45,451 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:13:45,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:13:45,452 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:13:45,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2021-10-07 15:13:46,438 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:13:46,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:13:46,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-07 15:13:46,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:13:46,796 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 23 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-07 15:13:46,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602358370] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:46,796 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:13:46,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 24 [2021-10-07 15:13:46,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683875861] [2021-10-07 15:13:46,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-07 15:13:46,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:13:46,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-07 15:13:46,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=579, Unknown=0, NotChecked=0, Total=650 [2021-10-07 15:13:46,816 INFO L87 Difference]: Start difference. First operand 207 states and 420 transitions. Second operand has 26 states, 25 states have (on average 1.88) internal successors, (47), 25 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:13:48,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:13:48,768 INFO L93 Difference]: Finished difference Result 434 states and 867 transitions. [2021-10-07 15:13:48,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-07 15:13:48,769 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.88) internal successors, (47), 25 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-07 15:13:48,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:13:48,770 INFO L225 Difference]: With dead ends: 434 [2021-10-07 15:13:48,770 INFO L226 Difference]: Without dead ends: 396 [2021-10-07 15:13:48,770 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 2131.0ms TimeCoverageRelationStatistics Valid=246, Invalid=2406, Unknown=0, NotChecked=0, Total=2652 [2021-10-07 15:13:48,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2021-10-07 15:13:48,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 224. [2021-10-07 15:13:48,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 222 states have (on average 2.0045045045045047) internal successors, (445), 223 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:13:48,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 445 transitions. [2021-10-07 15:13:48,775 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 445 transitions. Word has length 25 [2021-10-07 15:13:48,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:13:48,775 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 445 transitions. [2021-10-07 15:13:48,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.88) internal successors, (47), 25 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:13:48,776 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 445 transitions. [2021-10-07 15:13:48,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:13:48,777 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:13:48,777 INFO L512 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:13:48,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2021-10-07 15:13:48,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-10-07 15:13:48,987 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:13:48,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:13:48,988 INFO L82 PathProgramCache]: Analyzing trace with hash 626775257, now seen corresponding path program 11 times [2021-10-07 15:13:48,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:13:48,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156373649] [2021-10-07 15:13:48,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:13:48,989 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:13:49,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:13:51,373 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:13:51,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:13:51,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156373649] [2021-10-07 15:13:51,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156373649] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:51,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452395087] [2021-10-07 15:13:51,375 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:13:51,375 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:13:51,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:13:51,376 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:13:51,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2021-10-07 15:13:52,414 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-07 15:13:52,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:13:52,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-07 15:13:52,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:13:52,826 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-10-07 15:13:52,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452395087] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:52,826 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:13:52,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 7] total 29 [2021-10-07 15:13:52,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264472258] [2021-10-07 15:13:52,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-10-07 15:13:52,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:13:52,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-10-07 15:13:52,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=850, Unknown=0, NotChecked=0, Total=930 [2021-10-07 15:13:52,828 INFO L87 Difference]: Start difference. First operand 224 states and 445 transitions. Second operand has 31 states, 30 states have (on average 1.5) internal successors, (45), 30 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:13:55,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:13:55,533 INFO L93 Difference]: Finished difference Result 301 states and 583 transitions. [2021-10-07 15:13:55,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-07 15:13:55,534 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.5) internal successors, (45), 30 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-07 15:13:55,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:13:55,535 INFO L225 Difference]: With dead ends: 301 [2021-10-07 15:13:55,535 INFO L226 Difference]: Without dead ends: 287 [2021-10-07 15:13:55,536 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 2996.5ms TimeCoverageRelationStatistics Valid=214, Invalid=2438, Unknown=0, NotChecked=0, Total=2652 [2021-10-07 15:13:55,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-10-07 15:13:55,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 202. [2021-10-07 15:13:55,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 200 states have (on average 1.95) internal successors, (390), 201 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:13:55,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 390 transitions. [2021-10-07 15:13:55,541 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 390 transitions. Word has length 25 [2021-10-07 15:13:55,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:13:55,541 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 390 transitions. [2021-10-07 15:13:55,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.5) internal successors, (45), 30 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:13:55,541 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 390 transitions. [2021-10-07 15:13:55,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:13:55,542 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:13:55,542 INFO L512 BasicCegarLoop]: trace histogram [6, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:13:55,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2021-10-07 15:13:55,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,53 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:13:55,750 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:13:55,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:13:55,751 INFO L82 PathProgramCache]: Analyzing trace with hash -930786538, now seen corresponding path program 12 times [2021-10-07 15:13:55,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:13:55,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863459156] [2021-10-07 15:13:55,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:13:55,753 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:13:55,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:13:58,207 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:13:58,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:13:58,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863459156] [2021-10-07 15:13:58,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863459156] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:58,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123174077] [2021-10-07 15:13:58,208 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:13:58,208 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:13:58,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:13:58,209 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:13:58,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2021-10-07 15:13:59,634 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-07 15:13:59,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:13:59,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 49 conjunts are in the unsatisfiable core [2021-10-07 15:13:59,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:14:01,776 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-10-07 15:14:01,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123174077] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:14:01,776 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:14:01,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 32 [2021-10-07 15:14:01,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465403903] [2021-10-07 15:14:01,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-10-07 15:14:01,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:14:01,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-10-07 15:14:01,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=1034, Unknown=1, NotChecked=0, Total=1122 [2021-10-07 15:14:01,778 INFO L87 Difference]: Start difference. First operand 202 states and 390 transitions. Second operand has 34 states, 33 states have (on average 1.393939393939394) internal successors, (46), 33 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:14:39,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:14:39,899 INFO L93 Difference]: Finished difference Result 460 states and 910 transitions. [2021-10-07 15:14:39,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-10-07 15:14:39,900 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 1.393939393939394) internal successors, (46), 33 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-07 15:14:39,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:14:39,901 INFO L225 Difference]: With dead ends: 460 [2021-10-07 15:14:39,901 INFO L226 Difference]: Without dead ends: 452 [2021-10-07 15:14:39,902 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 877 ImplicationChecksByTransitivity, 12193.1ms TimeCoverageRelationStatistics Valid=290, Invalid=4128, Unknown=4, NotChecked=0, Total=4422 [2021-10-07 15:14:39,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2021-10-07 15:14:39,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 267. [2021-10-07 15:14:39,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 265 states have (on average 2.0226415094339623) internal successors, (536), 266 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:14:39,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 536 transitions. [2021-10-07 15:14:39,907 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 536 transitions. Word has length 26 [2021-10-07 15:14:39,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:14:39,907 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 536 transitions. [2021-10-07 15:14:39,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 1.393939393939394) internal successors, (46), 33 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:14:39,908 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 536 transitions. [2021-10-07 15:14:39,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-07 15:14:39,908 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:14:39,908 INFO L512 BasicCegarLoop]: trace histogram [7, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:14:39,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2021-10-07 15:14:40,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-10-07 15:14:40,109 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:14:40,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:14:40,110 INFO L82 PathProgramCache]: Analyzing trace with hash -2005412747, now seen corresponding path program 13 times [2021-10-07 15:14:40,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:14:40,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972490561] [2021-10-07 15:14:40,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:14:40,111 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:14:40,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:14:46,285 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:14:46,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:14:46,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972490561] [2021-10-07 15:14:46,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972490561] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:14:46,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280170584] [2021-10-07 15:14:46,285 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:14:46,286 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:14:46,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:14:46,286 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:14:46,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2021-10-07 15:14:47,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:14:47,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 66 conjunts are in the unsatisfiable core [2021-10-07 15:14:47,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:14:48,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-07 15:14:48,420 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-10-07 15:14:48,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 49 [2021-10-07 15:14:48,637 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:14:48,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 47 [2021-10-07 15:14:48,889 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:14:48,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 44 [2021-10-07 15:14:50,966 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:14:50,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280170584] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:14:50,967 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:14:50,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 22] total 46 [2021-10-07 15:14:50,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029166733] [2021-10-07 15:14:50,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-10-07 15:14:50,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:14:50,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-10-07 15:14:50,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=2142, Unknown=0, NotChecked=0, Total=2256 [2021-10-07 15:14:50,969 INFO L87 Difference]: Start difference. First operand 267 states and 536 transitions. Second operand has 48 states, 47 states have (on average 1.148936170212766) internal successors, (54), 47 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:15:34,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:15:34,317 INFO L93 Difference]: Finished difference Result 498 states and 985 transitions. [2021-10-07 15:15:34,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-10-07 15:15:34,318 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.148936170212766) internal successors, (54), 47 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-07 15:15:34,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:15:34,319 INFO L225 Difference]: With dead ends: 498 [2021-10-07 15:15:34,319 INFO L226 Difference]: Without dead ends: 492 [2021-10-07 15:15:34,320 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1378 ImplicationChecksByTransitivity, 16868.0ms TimeCoverageRelationStatistics Valid=456, Invalid=8473, Unknown=1, NotChecked=0, Total=8930 [2021-10-07 15:15:34,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2021-10-07 15:15:34,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 340. [2021-10-07 15:15:34,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 338 states have (on average 2.0118343195266273) internal successors, (680), 339 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:15:34,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 680 transitions. [2021-10-07 15:15:34,327 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 680 transitions. Word has length 27 [2021-10-07 15:15:34,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:15:34,328 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 680 transitions. [2021-10-07 15:15:34,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.148936170212766) internal successors, (54), 47 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:15:34,328 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 680 transitions. [2021-10-07 15:15:34,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-07 15:15:34,329 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:15:34,329 INFO L512 BasicCegarLoop]: trace histogram [7, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:15:34,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2021-10-07 15:15:34,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,55 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:15:34,540 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-07 15:15:34,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:15:34,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1465713403, now seen corresponding path program 14 times [2021-10-07 15:15:34,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:15:34,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802906366] [2021-10-07 15:15:34,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:15:34,542 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:15:34,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:15:36,459 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:15:36,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:15:36,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802906366] [2021-10-07 15:15:36,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802906366] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:15:36,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121447627] [2021-10-07 15:15:36,460 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:15:36,460 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:15:36,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:15:36,461 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:15:36,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2021-10-07 15:15:37,616 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:15:37,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:15:37,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-07 15:15:37,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:15:38,204 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 1 proven. 32 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-07 15:15:38,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121447627] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:15:38,205 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:15:38,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 11] total 31 [2021-10-07 15:15:38,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990755040] [2021-10-07 15:15:38,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-10-07 15:15:38,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:15:38,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-10-07 15:15:38,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=971, Unknown=0, NotChecked=0, Total=1056 [2021-10-07 15:15:38,207 INFO L87 Difference]: Start difference. First operand 340 states and 680 transitions. Second operand has 33 states, 32 states have (on average 1.5625) internal successors, (50), 32 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:15:41,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:15:41,018 INFO L93 Difference]: Finished difference Result 575 states and 1121 transitions. [2021-10-07 15:15:41,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-07 15:15:41,019 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.5625) internal successors, (50), 32 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-07 15:15:41,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:15:41,019 INFO L225 Difference]: With dead ends: 575 [2021-10-07 15:15:41,020 INFO L226 Difference]: Without dead ends: 0 [2021-10-07 15:15:41,020 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 524 ImplicationChecksByTransitivity, 3346.3ms TimeCoverageRelationStatistics Valid=315, Invalid=3225, Unknown=0, NotChecked=0, Total=3540 [2021-10-07 15:15:41,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-07 15:15:41,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-07 15:15:41,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:15:41,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-07 15:15:41,021 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2021-10-07 15:15:41,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:15:41,022 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-07 15:15:41,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 1.5625) internal successors, (50), 32 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:15:41,022 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-07 15:15:41,022 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-07 15:15:41,026 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:15:41,026 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:15:41,026 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:15:41,026 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:15:41,027 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:15:41,027 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:15:41,027 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:15:41,027 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:15:41,028 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:15:41,028 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:15:41,028 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:15:41,029 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:15:41,029 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:15:41,029 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:15:41,029 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:15:41,029 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:15:41,030 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-07 15:15:41,030 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-07 15:15:41,030 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:15:41,030 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:15:41,030 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:15:41,030 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:15:41,030 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:15:41,030 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:15:41,031 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:15:41,031 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:15:41,031 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:15:41,031 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:15:41,031 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:15:41,031 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:15:41,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2021-10-07 15:15:41,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,56 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:15:41,253 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-07 15:15:41,253 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-07 15:15:41,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 03:15:41 BasicIcfg [2021-10-07 15:15:41,256 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-07 15:15:41,256 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-07 15:15:41,256 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-07 15:15:41,257 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-07 15:15:41,257 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:10:48" (3/4) ... [2021-10-07 15:15:41,260 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-07 15:15:41,265 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-07 15:15:41,266 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-07 15:15:41,271 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-10-07 15:15:41,271 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-07 15:15:41,272 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-07 15:15:41,272 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-07 15:15:41,331 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/weaver/popl20-two-queue.wvr.c-witness.graphml [2021-10-07 15:15:41,331 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-07 15:15:41,332 INFO L168 Benchmark]: Toolchain (without parser) took 294678.95 ms. Allocated memory was 151.0 MB in the beginning and 407.9 MB in the end (delta: 256.9 MB). Free memory was 126.3 MB in the beginning and 139.1 MB in the end (delta: -12.8 MB). Peak memory consumption was 245.2 MB. Max. memory is 8.0 GB. [2021-10-07 15:15:41,333 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 128.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-07 15:15:41,333 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.74 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 115.1 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-07 15:15:41,333 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.83 ms. Allocated memory is still 151.0 MB. Free memory was 114.9 MB in the beginning and 112.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 15:15:41,334 INFO L168 Benchmark]: Boogie Preprocessor took 40.29 ms. Allocated memory is still 151.0 MB. Free memory was 112.7 MB in the beginning and 111.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 15:15:41,334 INFO L168 Benchmark]: RCFGBuilder took 1186.09 ms. Allocated memory is still 151.0 MB. Free memory was 111.0 MB in the beginning and 114.3 MB in the end (delta: -3.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 8.0 GB. [2021-10-07 15:15:41,334 INFO L168 Benchmark]: TraceAbstraction took 293004.66 ms. Allocated memory was 151.0 MB in the beginning and 407.9 MB in the end (delta: 256.9 MB). Free memory was 113.8 MB in the beginning and 142.7 MB in the end (delta: -29.0 MB). Peak memory consumption was 229.0 MB. Max. memory is 8.0 GB. [2021-10-07 15:15:41,335 INFO L168 Benchmark]: Witness Printer took 74.88 ms. Allocated memory is still 407.9 MB. Free memory was 142.7 MB in the beginning and 139.1 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-10-07 15:15:41,337 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 128.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 297.74 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 115.1 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 57.83 ms. Allocated memory is still 151.0 MB. Free memory was 114.9 MB in the beginning and 112.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 40.29 ms. Allocated memory is still 151.0 MB. Free memory was 112.7 MB in the beginning and 111.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1186.09 ms. Allocated memory is still 151.0 MB. Free memory was 111.0 MB in the beginning and 114.3 MB in the end (delta: -3.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 293004.66 ms. Allocated memory was 151.0 MB in the beginning and 407.9 MB in the end (delta: 256.9 MB). Free memory was 113.8 MB in the beginning and 142.7 MB in the end (delta: -29.0 MB). Peak memory consumption was 229.0 MB. Max. memory is 8.0 GB. * Witness Printer took 74.88 ms. Allocated memory is still 407.9 MB. Free memory was 142.7 MB in the beginning and 139.1 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9544.5ms, 177 PlacesBefore, 40 PlacesAfterwards, 183 TransitionsBefore, 37 TransitionsAfterwards, 1188 CoEnabledTransitionPairs, 8 FixpointIterations, 128 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 24 TrivialYvCompositions, 4 ConcurrentYvCompositions, 9 ChoiceCompositions, 204 TotalNumberOfCompositions, 3168 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1928, positive: 1802, positive conditional: 0, positive unconditional: 1802, negative: 126, negative conditional: 0, negative unconditional: 126, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 837, positive: 813, positive conditional: 0, positive unconditional: 813, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 837, positive: 807, positive conditional: 0, positive unconditional: 807, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 30, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 135, positive: 38, positive conditional: 0, positive unconditional: 38, negative: 97, negative conditional: 0, negative unconditional: 97, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1928, positive: 989, positive conditional: 0, positive unconditional: 989, negative: 102, negative conditional: 0, negative unconditional: 102, unknown: 837, unknown conditional: 0, unknown unconditional: 837] , Statistics on independence cache: Total cache size (in pairs): 115, Positive cache size: 105, Positive conditional cache size: 0, Positive unconditional cache size: 105, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10 - 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: 51]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 51]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 69]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 69]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 74]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 74]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 76]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 76]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: 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 5 procedures, 207 locations, 30 error locations. Started 1 CEGAR loops. OverallTime: 292764.9ms, OverallIterations: 62, TraceHistogramMax: 7, EmptinessCheckTime: 60.9ms, AutomataDifference: 163347.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9644.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 958 SDtfs, 4417 SDslu, 5801 SDs, 0 SdLazy, 29771 SolverSat, 2025 SolverUnsat, 29 SolverUnknown, 0 SolverNotchecked, 97456.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2194 GetRequests, 539 SyntacticMatches, 0 SemanticMatches, 1655 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12161 ImplicationChecksByTransitivity, 92918.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=776occurred in iteration=49, InterpolantAutomatonStates: 1029, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 662.9ms AutomataMinimizationTime, 62 MinimizatonAttempts, 5500 StatesRemovedByMinimization, 54 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 737.8ms SsaConstructionTime, 5559.6ms SatisfiabilityAnalysisTime, 77307.3ms InterpolantComputationTime, 1956 NumberOfCodeBlocks, 1929 NumberOfCodeBlocksAsserted, 165 NumberOfCheckSat, 1839 ConstructedInterpolants, 146 QuantifiedInterpolants, 54389 SizeOfPredicates, 478 NumberOfNonLiveVariables, 12954 ConjunctsInSsa, 1451 ConjunctsInUnsatCore, 117 InterpolantComputations, 16 PerfectInterpolantSequences, 493/1564 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 16 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-07 15:15:41,553 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...