/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-more-dec-subseq.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-08 16:12:21,240 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-08 16:12:21,245 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-08 16:12:21,327 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-08 16:12:21,423 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-08 16:12:21,424 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-08 16:12:21,425 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-08 16:12:21,433 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-10-08 16:12:21,482 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-08 16:12:21,482 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-08 16:12:21,483 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-08 16:12:21,483 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-08 16:12:21,488 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-08 16:12:21,488 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-08 16:12:21,489 INFO L138 SettingsManager]: * Use SBE=true [2021-10-08 16:12:21,489 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-08 16:12:21,489 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-08 16:12:21,490 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-08 16:12:21,491 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-08 16:12:21,491 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-08 16:12:21,491 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-08 16:12:21,492 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-08 16:12:21,492 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-08 16:12:21,492 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-08 16:12:21,493 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-08 16:12:21,493 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-08 16:12:21,493 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-08 16:12:21,493 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-08 16:12:21,494 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-08 16:12:21,494 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-08 16:12:21,494 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-08 16:12:21,494 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-08 16:12:21,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 16:12:21,495 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-08 16:12:21,495 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-08 16:12:21,495 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-08 16:12:21,495 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-08 16:12:21,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-08 16:12:21,496 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-08 16:12:21,496 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-08 16:12:21,497 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-08 16:12:21,939 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-08 16:12:21,967 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-08 16:12:21,970 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-08 16:12:21,972 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-08 16:12:21,972 INFO L275 PluginConnector]: CDTParser initialized [2021-10-08 16:12:21,973 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-dec-subseq.wvr.c [2021-10-08 16:12:22,054 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/feef6eaa1/765fbe125c2646b9aa83624df3351685/FLAGba681d2bc [2021-10-08 16:12:22,670 INFO L306 CDTParser]: Found 1 translation units. [2021-10-08 16:12:22,671 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-dec-subseq.wvr.c [2021-10-08 16:12:22,678 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/feef6eaa1/765fbe125c2646b9aa83624df3351685/FLAGba681d2bc [2021-10-08 16:12:23,047 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/feef6eaa1/765fbe125c2646b9aa83624df3351685 [2021-10-08 16:12:23,050 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-08 16:12:23,060 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-08 16:12:23,062 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-08 16:12:23,062 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-08 16:12:23,066 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-08 16:12:23,067 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 04:12:23" (1/1) ... [2021-10-08 16:12:23,068 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70ad6759 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:12:23, skipping insertion in model container [2021-10-08 16:12:23,068 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 04:12:23" (1/1) ... [2021-10-08 16:12:23,076 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-08 16:12:23,097 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-08 16:12:23,286 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-more-dec-subseq.wvr.c[2742,2755] [2021-10-08 16:12:23,293 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 16:12:23,303 INFO L203 MainTranslator]: Completed pre-run [2021-10-08 16:12:23,335 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-more-dec-subseq.wvr.c[2742,2755] [2021-10-08 16:12:23,339 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 16:12:23,358 INFO L208 MainTranslator]: Completed translation [2021-10-08 16:12:23,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:12:23 WrapperNode [2021-10-08 16:12:23,359 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-08 16:12:23,360 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-08 16:12:23,360 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-08 16:12:23,361 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-08 16:12:23,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:12:23" (1/1) ... [2021-10-08 16:12:23,381 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:12:23" (1/1) ... [2021-10-08 16:12:23,415 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-08 16:12:23,416 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-08 16:12:23,416 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-08 16:12:23,417 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-08 16:12:23,427 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:12:23" (1/1) ... [2021-10-08 16:12:23,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:12:23" (1/1) ... [2021-10-08 16:12:23,432 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:12:23" (1/1) ... [2021-10-08 16:12:23,432 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:12:23" (1/1) ... [2021-10-08 16:12:23,442 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:12:23" (1/1) ... [2021-10-08 16:12:23,448 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:12:23" (1/1) ... [2021-10-08 16:12:23,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:12:23" (1/1) ... [2021-10-08 16:12:23,454 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-08 16:12:23,456 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-08 16:12:23,456 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-08 16:12:23,456 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-08 16:12:23,457 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:12:23" (1/1) ... [2021-10-08 16:12:23,471 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 16:12:23,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:12:23,517 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-08 16:12:23,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-08 16:12:23,613 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-08 16:12:23,613 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-08 16:12:23,614 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-08 16:12:23,614 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-08 16:12:23,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-08 16:12:23,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-08 16:12:23,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-08 16:12:23,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-08 16:12:23,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-08 16:12:23,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-08 16:12:23,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-08 16:12:23,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-08 16:12:23,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-08 16:12:23,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-08 16:12:23,621 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-08 16:12:24,470 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-08 16:12:24,470 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-10-08 16:12:24,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 04:12:24 BoogieIcfgContainer [2021-10-08 16:12:24,477 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-08 16:12:24,479 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-08 16:12:24,480 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-08 16:12:24,492 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-08 16:12:24,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.10 04:12:23" (1/3) ... [2021-10-08 16:12:24,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f9992fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 04:12:24, skipping insertion in model container [2021-10-08 16:12:24,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:12:23" (2/3) ... [2021-10-08 16:12:24,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f9992fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 04:12:24, skipping insertion in model container [2021-10-08 16:12:24,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 04:12:24" (3/3) ... [2021-10-08 16:12:24,499 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-dec-subseq.wvr.c [2021-10-08 16:12:24,513 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-08 16:12:24,514 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-08 16:12:24,514 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-08 16:12:24,514 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-08 16:12:24,580 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,580 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,581 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,581 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,581 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,581 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,582 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,582 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,582 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,582 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,583 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,583 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,583 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,583 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,583 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,584 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,584 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,584 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,584 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,585 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,585 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,585 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,585 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,586 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,586 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,586 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,587 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,587 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,587 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,588 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,588 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,588 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,589 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,589 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,589 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,589 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,589 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,590 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,590 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,590 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,590 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,591 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,591 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,591 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,591 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,592 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,592 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,592 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,592 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,593 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,593 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,594 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,594 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,594 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,595 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,595 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,596 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,596 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,597 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,597 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,598 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,598 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,598 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,598 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,599 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,600 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,600 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,600 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,601 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,601 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,601 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,601 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,601 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,602 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,602 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,602 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,603 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,604 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,605 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,605 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,605 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,605 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,606 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,606 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,614 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,615 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,615 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,615 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,615 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,617 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,617 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,617 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,618 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,619 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,621 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,625 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,631 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,631 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,631 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,632 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:24,641 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-08 16:12:24,710 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-08 16:12:24,730 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-08 16:12:24,730 INFO L340 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2021-10-08 16:12:24,762 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-08 16:12:24,779 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 172 places, 180 transitions, 376 flow [2021-10-08 16:12:24,782 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 172 places, 180 transitions, 376 flow [2021-10-08 16:12:24,784 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 172 places, 180 transitions, 376 flow [2021-10-08 16:12:24,894 INFO L129 PetriNetUnfolder]: 15/178 cut-off events. [2021-10-08 16:12:24,895 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-08 16:12:24,899 INFO L84 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 178 events. 15/178 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 146 event pairs, 0 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 147. Up to 2 conditions per place. [2021-10-08 16:12:24,902 INFO L116 LiptonReduction]: Number of co-enabled transitions 842 [2021-10-08 16:12:32,863 INFO L131 LiptonReduction]: Checked pairs total: 1709 [2021-10-08 16:12:32,864 INFO L133 LiptonReduction]: Total number of compositions: 195 [2021-10-08 16:12:32,874 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 34 transitions, 84 flow [2021-10-08 16:12:32,896 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 122 states, 104 states have (on average 2.826923076923077) internal successors, (294), 121 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:12:32,899 INFO L276 IsEmpty]: Start isEmpty. Operand has 122 states, 104 states have (on average 2.826923076923077) internal successors, (294), 121 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:12:32,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-08 16:12:32,905 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:12:32,906 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-08 16:12:32,906 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-08 16:12:32,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:12:32,912 INFO L82 PathProgramCache]: Analyzing trace with hash 24705, now seen corresponding path program 1 times [2021-10-08 16:12:32,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:12:32,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516927755] [2021-10-08 16:12:32,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:12:32,925 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:12:33,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:12:33,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:12:33,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:12:33,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516927755] [2021-10-08 16:12:33,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516927755] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:12:33,127 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:12:33,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-08 16:12:33,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061737122] [2021-10-08 16:12:33,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:12:33,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:12:33,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:12:33,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:12:33,155 INFO L87 Difference]: Start difference. First operand has 122 states, 104 states have (on average 2.826923076923077) internal successors, (294), 121 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:12:33,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:12:33,221 INFO L93 Difference]: Finished difference Result 179 states and 433 transitions. [2021-10-08 16:12:33,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:12:33,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-08 16:12:33,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:12:33,239 INFO L225 Difference]: With dead ends: 179 [2021-10-08 16:12:33,240 INFO L226 Difference]: Without dead ends: 179 [2021-10-08 16:12:33,241 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:12:33,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-10-08 16:12:33,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 94. [2021-10-08 16:12:33,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 83 states have (on average 2.6867469879518073) internal successors, (223), 93 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:12:33,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 223 transitions. [2021-10-08 16:12:33,304 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 223 transitions. Word has length 2 [2021-10-08 16:12:33,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:12:33,305 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 223 transitions. [2021-10-08 16:12:33,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:12:33,306 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 223 transitions. [2021-10-08 16:12:33,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 16:12:33,306 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:12:33,306 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 16:12:33,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-08 16:12:33,307 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-08 16:12:33,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:12:33,310 INFO L82 PathProgramCache]: Analyzing trace with hash 767558, now seen corresponding path program 1 times [2021-10-08 16:12:33,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:12:33,310 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538791904] [2021-10-08 16:12:33,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:12:33,311 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:12:33,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:12:33,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:12:33,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:12:33,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538791904] [2021-10-08 16:12:33,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538791904] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:12:33,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241310412] [2021-10-08 16:12:33,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:12:33,435 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:12:33,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:12:33,437 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:12:33,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-08 16:12:33,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:12:33,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 16:12:33,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:12:33,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:12:33,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241310412] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:12:33,579 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:12:33,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 3 [2021-10-08 16:12:33,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661570709] [2021-10-08 16:12:33,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 16:12:33,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:12:33,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 16:12:33,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:12:33,582 INFO L87 Difference]: Start difference. First operand 94 states and 223 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:12:33,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:12:33,650 INFO L93 Difference]: Finished difference Result 266 states and 649 transitions. [2021-10-08 16:12:33,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 16:12:33,650 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-08 16:12:33,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:12:33,654 INFO L225 Difference]: With dead ends: 266 [2021-10-08 16:12:33,654 INFO L226 Difference]: Without dead ends: 266 [2021-10-08 16:12:33,655 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.7ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:12:33,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-10-08 16:12:33,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 96. [2021-10-08 16:12:33,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 85 states have (on average 2.6941176470588237) internal successors, (229), 95 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:12:33,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 229 transitions. [2021-10-08 16:12:33,674 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 229 transitions. Word has length 3 [2021-10-08 16:12:33,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:12:33,674 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 229 transitions. [2021-10-08 16:12:33,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:12:33,675 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 229 transitions. [2021-10-08 16:12:33,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 16:12:33,675 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:12:33,675 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 16:12:33,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-08 16:12:33,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:12:33,892 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-08 16:12:33,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:12:33,893 INFO L82 PathProgramCache]: Analyzing trace with hash 767590, now seen corresponding path program 1 times [2021-10-08 16:12:33,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:12:33,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381564117] [2021-10-08 16:12:33,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:12:33,895 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:12:33,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:12:33,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:12:33,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:12:33,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381564117] [2021-10-08 16:12:33,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381564117] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:12:33,939 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:12:33,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 16:12:33,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527025073] [2021-10-08 16:12:33,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:12:33,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:12:33,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:12:33,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:12:33,942 INFO L87 Difference]: Start difference. First operand 96 states and 229 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:12:33,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:12:33,966 INFO L93 Difference]: Finished difference Result 94 states and 225 transitions. [2021-10-08 16:12:33,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:12:33,966 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-08 16:12:33,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:12:33,968 INFO L225 Difference]: With dead ends: 94 [2021-10-08 16:12:33,968 INFO L226 Difference]: Without dead ends: 94 [2021-10-08 16:12:33,969 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:12:33,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-10-08 16:12:33,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2021-10-08 16:12:33,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 85 states have (on average 2.6470588235294117) internal successors, (225), 93 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:12:33,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 225 transitions. [2021-10-08 16:12:33,980 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 225 transitions. Word has length 3 [2021-10-08 16:12:33,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:12:33,980 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 225 transitions. [2021-10-08 16:12:33,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:12:33,981 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 225 transitions. [2021-10-08 16:12:33,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-08 16:12:33,981 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:12:33,981 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-08 16:12:33,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-08 16:12:33,982 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-08 16:12:33,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:12:33,983 INFO L82 PathProgramCache]: Analyzing trace with hash 23796001, now seen corresponding path program 2 times [2021-10-08 16:12:33,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:12:33,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627817620] [2021-10-08 16:12:33,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:12:33,984 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:12:34,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:12:34,044 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:12:34,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:12:34,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627817620] [2021-10-08 16:12:34,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627817620] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:12:34,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100832046] [2021-10-08 16:12:34,045 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:12:34,046 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:12:34,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:12:34,047 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:12:34,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-08 16:12:34,103 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 16:12:34,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:12:34,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 16:12:34,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:12:34,128 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:12:34,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100832046] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:12:34,129 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:12:34,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2021-10-08 16:12:34,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599272000] [2021-10-08 16:12:34,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:12:34,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:12:34,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:12:34,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:12:34,131 INFO L87 Difference]: Start difference. First operand 94 states and 225 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:12:34,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:12:34,152 INFO L93 Difference]: Finished difference Result 93 states and 224 transitions. [2021-10-08 16:12:34,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:12:34,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-08 16:12:34,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:12:34,156 INFO L225 Difference]: With dead ends: 93 [2021-10-08 16:12:34,156 INFO L226 Difference]: Without dead ends: 93 [2021-10-08 16:12:34,157 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 10.1ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:12:34,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-10-08 16:12:34,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2021-10-08 16:12:34,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 83 states have (on average 2.6506024096385543) internal successors, (220), 90 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) [2021-10-08 16:12:34,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 220 transitions. [2021-10-08 16:12:34,179 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 220 transitions. Word has length 4 [2021-10-08 16:12:34,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:12:34,180 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 220 transitions. [2021-10-08 16:12:34,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:12:34,180 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 220 transitions. [2021-10-08 16:12:34,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 16:12:34,181 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:12:34,181 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2021-10-08 16:12:34,228 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 [2021-10-08 16:12:34,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:12:34,399 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-08 16:12:34,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:12:34,399 INFO L82 PathProgramCache]: Analyzing trace with hash 738425501, now seen corresponding path program 1 times [2021-10-08 16:12:34,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:12:34,401 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735932666] [2021-10-08 16:12:34,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:12:34,402 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:12:34,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:12:34,462 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:12:34,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:12:34,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735932666] [2021-10-08 16:12:34,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735932666] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:12:34,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098413378] [2021-10-08 16:12:34,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:12:34,464 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:12:34,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:12:34,465 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:12:34,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-08 16:12:34,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:12:34,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 16:12:34,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:12:34,564 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:12:34,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098413378] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:12:34,565 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:12:34,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-10-08 16:12:34,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236847434] [2021-10-08 16:12:34,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 16:12:34,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:12:34,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 16:12:34,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:12:34,567 INFO L87 Difference]: Start difference. First operand 91 states and 220 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) [2021-10-08 16:12:34,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:12:34,614 INFO L93 Difference]: Finished difference Result 350 states and 858 transitions. [2021-10-08 16:12:34,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 16:12:34,615 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 [2021-10-08 16:12:34,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:12:34,618 INFO L225 Difference]: With dead ends: 350 [2021-10-08 16:12:34,618 INFO L226 Difference]: Without dead ends: 350 [2021-10-08 16:12:34,619 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 10.6ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:12:34,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2021-10-08 16:12:34,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 92. [2021-10-08 16:12:34,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 84 states have (on average 2.642857142857143) internal successors, (222), 91 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:12:34,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 222 transitions. [2021-10-08 16:12:34,629 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 222 transitions. Word has length 5 [2021-10-08 16:12:34,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:12:34,630 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 222 transitions. [2021-10-08 16:12:34,630 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) [2021-10-08 16:12:34,631 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 222 transitions. [2021-10-08 16:12:34,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-08 16:12:34,631 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:12:34,631 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1] [2021-10-08 16:12:34,673 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 [2021-10-08 16:12:34,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:12:34,846 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-08 16:12:34,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:12:34,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1416355367, now seen corresponding path program 2 times [2021-10-08 16:12:34,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:12:34,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321830471] [2021-10-08 16:12:34,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:12:34,848 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:12:34,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:12:34,915 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:12:34,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:12:34,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321830471] [2021-10-08 16:12:34,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321830471] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:12:34,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989377224] [2021-10-08 16:12:34,916 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:12:34,916 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:12:34,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:12:34,923 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:12:34,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-08 16:12:34,998 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 16:12:34,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:12:35,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 16:12:35,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:12:35,039 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:12:35,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989377224] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:12:35,042 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:12:35,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2021-10-08 16:12:35,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824498531] [2021-10-08 16:12:35,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:12:35,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:12:35,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:12:35,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:12:35,048 INFO L87 Difference]: Start difference. First operand 92 states and 222 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) [2021-10-08 16:12:35,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:12:35,089 INFO L93 Difference]: Finished difference Result 91 states and 221 transitions. [2021-10-08 16:12:35,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:12:35,091 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 [2021-10-08 16:12:35,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:12:35,092 INFO L225 Difference]: With dead ends: 91 [2021-10-08 16:12:35,093 INFO L226 Difference]: Without dead ends: 91 [2021-10-08 16:12:35,093 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 33.9ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-08 16:12:35,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-10-08 16:12:35,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 88. [2021-10-08 16:12:35,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 81 states have (on average 2.654320987654321) internal successors, (215), 87 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:12:35,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 215 transitions. [2021-10-08 16:12:35,107 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 215 transitions. Word has length 6 [2021-10-08 16:12:35,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:12:35,108 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 215 transitions. [2021-10-08 16:12:35,108 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) [2021-10-08 16:12:35,108 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 215 transitions. [2021-10-08 16:12:35,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-08 16:12:35,109 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:12:35,109 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-08 16:12:35,182 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-10-08 16:12:35,310 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 [2021-10-08 16:12:35,311 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-08 16:12:35,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:12:35,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1416753831, now seen corresponding path program 1 times [2021-10-08 16:12:35,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:12:35,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778672425] [2021-10-08 16:12:35,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:12:35,313 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:12:35,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:12:35,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:12:35,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:12:35,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778672425] [2021-10-08 16:12:35,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778672425] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:12:35,415 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:12:35,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 16:12:35,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140538831] [2021-10-08 16:12:35,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:12:35,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:12:35,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:12:35,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:12:35,417 INFO L87 Difference]: Start difference. First operand 88 states and 215 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:12:35,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:12:35,462 INFO L93 Difference]: Finished difference Result 193 states and 429 transitions. [2021-10-08 16:12:35,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 16:12:35,463 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-08 16:12:35,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:12:35,464 INFO L225 Difference]: With dead ends: 193 [2021-10-08 16:12:35,464 INFO L226 Difference]: Without dead ends: 157 [2021-10-08 16:12:35,465 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:12:35,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-10-08 16:12:35,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 119. [2021-10-08 16:12:35,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 110 states have (on average 2.6) internal successors, (286), 118 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:12:35,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 286 transitions. [2021-10-08 16:12:35,473 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 286 transitions. Word has length 6 [2021-10-08 16:12:35,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:12:35,473 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 286 transitions. [2021-10-08 16:12:35,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:12:35,474 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 286 transitions. [2021-10-08 16:12:35,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-08 16:12:35,474 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:12:35,474 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-08 16:12:35,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-08 16:12:35,475 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-08 16:12:35,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:12:35,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1416755409, now seen corresponding path program 1 times [2021-10-08 16:12:35,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:12:35,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465107484] [2021-10-08 16:12:35,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:12:35,476 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:12:35,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:12:35,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:12:35,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:12:35,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465107484] [2021-10-08 16:12:35,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465107484] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:12:35,505 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:12:35,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-08 16:12:35,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336154831] [2021-10-08 16:12:35,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:12:35,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:12:35,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:12:35,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:12:35,507 INFO L87 Difference]: Start difference. First operand 119 states and 286 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) [2021-10-08 16:12:35,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:12:35,532 INFO L93 Difference]: Finished difference Result 199 states and 499 transitions. [2021-10-08 16:12:35,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:12:35,533 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 [2021-10-08 16:12:35,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:12:35,535 INFO L225 Difference]: With dead ends: 199 [2021-10-08 16:12:35,535 INFO L226 Difference]: Without dead ends: 199 [2021-10-08 16:12:35,535 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:12:35,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-10-08 16:12:35,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 175. [2021-10-08 16:12:35,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 166 states have (on average 2.783132530120482) internal successors, (462), 174 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:12:35,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 462 transitions. [2021-10-08 16:12:35,545 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 462 transitions. Word has length 6 [2021-10-08 16:12:35,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:12:35,546 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 462 transitions. [2021-10-08 16:12:35,546 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) [2021-10-08 16:12:35,546 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 462 transitions. [2021-10-08 16:12:35,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-08 16:12:35,547 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:12:35,547 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-08 16:12:35,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-08 16:12:35,547 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-08 16:12:35,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:12:35,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1416755410, now seen corresponding path program 1 times [2021-10-08 16:12:35,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:12:35,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48319879] [2021-10-08 16:12:35,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:12:35,549 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:12:35,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:12:35,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:12:35,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:12:35,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48319879] [2021-10-08 16:12:35,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48319879] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:12:35,586 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:12:35,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-08 16:12:35,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467559450] [2021-10-08 16:12:35,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:12:35,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:12:35,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:12:35,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:12:35,594 INFO L87 Difference]: Start difference. First operand 175 states and 462 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) [2021-10-08 16:12:35,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:12:35,608 INFO L93 Difference]: Finished difference Result 159 states and 404 transitions. [2021-10-08 16:12:35,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:12:35,609 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 [2021-10-08 16:12:35,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:12:35,611 INFO L225 Difference]: With dead ends: 159 [2021-10-08 16:12:35,611 INFO L226 Difference]: Without dead ends: 159 [2021-10-08 16:12:35,611 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:12:35,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-10-08 16:12:35,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2021-10-08 16:12:35,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 153 states have (on average 2.6405228758169934) internal successors, (404), 158 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:12:35,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 404 transitions. [2021-10-08 16:12:35,619 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 404 transitions. Word has length 6 [2021-10-08 16:12:35,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:12:35,620 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 404 transitions. [2021-10-08 16:12:35,620 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) [2021-10-08 16:12:35,620 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 404 transitions. [2021-10-08 16:12:35,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 16:12:35,621 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:12:35,621 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:12:35,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-08 16:12:35,625 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-08 16:12:35,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:12:35,626 INFO L82 PathProgramCache]: Analyzing trace with hash 262331884, now seen corresponding path program 1 times [2021-10-08 16:12:35,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:12:35,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924797623] [2021-10-08 16:12:35,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:12:35,627 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:12:35,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:12:35,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:12:35,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:12:35,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924797623] [2021-10-08 16:12:35,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924797623] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:12:35,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815919407] [2021-10-08 16:12:35,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:12:35,711 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:12:35,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:12:35,713 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:12:35,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-08 16:12:35,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:12:35,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 16:12:35,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:12:35,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:12:35,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815919407] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:12:35,900 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:12:35,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2021-10-08 16:12:35,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735578678] [2021-10-08 16:12:35,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 16:12:35,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:12:35,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 16:12:35,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:12:35,902 INFO L87 Difference]: Start difference. First operand 159 states and 404 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:12:35,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:12:35,939 INFO L93 Difference]: Finished difference Result 161 states and 406 transitions. [2021-10-08 16:12:35,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:12:35,939 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-08 16:12:35,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:12:35,941 INFO L225 Difference]: With dead ends: 161 [2021-10-08 16:12:35,942 INFO L226 Difference]: Without dead ends: 161 [2021-10-08 16:12:35,942 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 38.1ms TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:12:35,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-10-08 16:12:35,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2021-10-08 16:12:35,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 155 states have (on average 2.6193548387096772) internal successors, (406), 160 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:12:35,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 406 transitions. [2021-10-08 16:12:35,950 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 406 transitions. Word has length 7 [2021-10-08 16:12:35,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:12:35,950 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 406 transitions. [2021-10-08 16:12:35,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:12:35,951 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 406 transitions. [2021-10-08 16:12:35,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-08 16:12:35,951 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:12:35,952 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:12:35,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-08 16:12:36,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:12:36,168 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-08 16:12:36,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:12:36,169 INFO L82 PathProgramCache]: Analyzing trace with hash -469598792, now seen corresponding path program 1 times [2021-10-08 16:12:36,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:12:36,170 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526924544] [2021-10-08 16:12:36,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:12:36,170 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:12:36,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:12:36,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:12:36,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:12:36,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526924544] [2021-10-08 16:12:36,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526924544] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:12:36,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204214887] [2021-10-08 16:12:36,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:12:36,221 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:12:36,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:12:36,222 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:12:36,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-08 16:12:36,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:12:36,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 16:12:36,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:12:36,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:12:36,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204214887] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:12:36,354 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:12:36,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2021-10-08 16:12:36,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317851278] [2021-10-08 16:12:36,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:12:36,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:12:36,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:12:36,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:12:36,357 INFO L87 Difference]: Start difference. First operand 161 states and 406 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:12:36,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:12:36,364 INFO L93 Difference]: Finished difference Result 129 states and 312 transitions. [2021-10-08 16:12:36,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:12:36,365 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-08 16:12:36,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:12:36,366 INFO L225 Difference]: With dead ends: 129 [2021-10-08 16:12:36,366 INFO L226 Difference]: Without dead ends: 119 [2021-10-08 16:12:36,367 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 13.8ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:12:36,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-10-08 16:12:36,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-10-08 16:12:36,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 117 states have (on average 2.427350427350427) internal successors, (284), 118 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:12:36,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 284 transitions. [2021-10-08 16:12:36,373 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 284 transitions. Word has length 8 [2021-10-08 16:12:36,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:12:36,373 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 284 transitions. [2021-10-08 16:12:36,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:12:36,373 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 284 transitions. [2021-10-08 16:12:36,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-08 16:12:36,374 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:12:36,374 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:12:36,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-08 16:12:36,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-08 16:12:36,589 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-08 16:12:36,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:12:36,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1269750589, now seen corresponding path program 1 times [2021-10-08 16:12:36,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:12:36,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258311809] [2021-10-08 16:12:36,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:12:36,591 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:12:36,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:12:36,627 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:12:36,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:12:36,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258311809] [2021-10-08 16:12:36,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258311809] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:12:36,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868201597] [2021-10-08 16:12:36,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:12:36,630 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:12:36,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:12:36,631 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:12:36,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-08 16:12:36,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:12:36,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 16:12:36,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:12:36,837 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:12:36,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868201597] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:12:36,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:12:36,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 6] total 8 [2021-10-08 16:12:36,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692410874] [2021-10-08 16:12:36,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-08 16:12:36,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:12:36,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-08 16:12:36,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-10-08 16:12:36,840 INFO L87 Difference]: Start difference. First operand 119 states and 284 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:12:37,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:12:37,033 INFO L93 Difference]: Finished difference Result 251 states and 562 transitions. [2021-10-08 16:12:37,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-08 16:12:37,034 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-08 16:12:37,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:12:37,035 INFO L225 Difference]: With dead ends: 251 [2021-10-08 16:12:37,036 INFO L226 Difference]: Without dead ends: 145 [2021-10-08 16:12:37,036 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 118.3ms TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2021-10-08 16:12:37,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-10-08 16:12:37,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-10-08 16:12:37,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 143 states have (on average 2.3776223776223775) internal successors, (340), 144 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:12:37,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 340 transitions. [2021-10-08 16:12:37,042 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 340 transitions. Word has length 9 [2021-10-08 16:12:37,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:12:37,042 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 340 transitions. [2021-10-08 16:12:37,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:12:37,042 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 340 transitions. [2021-10-08 16:12:37,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-08 16:12:37,043 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:12:37,043 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2021-10-08 16:12:37,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-08 16:12:37,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:12:37,256 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-08 16:12:37,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:12:37,257 INFO L82 PathProgramCache]: Analyzing trace with hash -489460099, now seen corresponding path program 2 times [2021-10-08 16:12:37,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:12:37,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032999465] [2021-10-08 16:12:37,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:12:37,258 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:12:37,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:12:37,313 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:12:37,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:12:37,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032999465] [2021-10-08 16:12:37,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032999465] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:12:37,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229937537] [2021-10-08 16:12:37,314 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:12:37,314 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:12:37,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:12:37,316 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) [2021-10-08 16:12:37,333 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 [2021-10-08 16:12:37,400 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 16:12:37,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:12:37,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 16:12:37,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:12:37,443 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-08 16:12:37,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229937537] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:12:37,444 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:12:37,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2] total 5 [2021-10-08 16:12:37,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16011826] [2021-10-08 16:12:37,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 16:12:37,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:12:37,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 16:12:37,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-08 16:12:37,447 INFO L87 Difference]: Start difference. First operand 145 states and 340 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:12:37,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:12:37,518 INFO L93 Difference]: Finished difference Result 195 states and 467 transitions. [2021-10-08 16:12:37,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 16:12:37,519 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-08 16:12:37,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:12:37,520 INFO L225 Difference]: With dead ends: 195 [2021-10-08 16:12:37,520 INFO L226 Difference]: Without dead ends: 0 [2021-10-08 16:12:37,520 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 34.1ms TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2021-10-08 16:12:37,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-08 16:12:37,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-08 16:12:37,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:12:37,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-08 16:12:37,521 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2021-10-08 16:12:37,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:12:37,521 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-08 16:12:37,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:12:37,522 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-08 16:12:37,522 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-08 16:12:37,525 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:37,527 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:37,527 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:37,528 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:37,528 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:37,528 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:37,528 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:37,529 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:37,529 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:37,529 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:37,529 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-08 16:12:37,529 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-08 16:12:37,530 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:37,530 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:37,530 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:37,530 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:37,531 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:37,531 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:37,570 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 [2021-10-08 16:12:37,746 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 [2021-10-08 16:12:37,755 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-08 16:12:37,756 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-08 16:12:37,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.10 04:12:37 BasicIcfg [2021-10-08 16:12:37,758 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-08 16:12:37,759 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-08 16:12:37,759 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-08 16:12:37,760 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-08 16:12:37,761 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 04:12:24" (3/4) ... [2021-10-08 16:12:37,764 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-08 16:12:37,771 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-08 16:12:37,771 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-08 16:12:37,779 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-10-08 16:12:37,779 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-08 16:12:37,779 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-08 16:12:37,780 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-08 16:12:37,831 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/weaver/popl20-more-dec-subseq.wvr.c-witness.graphml [2021-10-08 16:12:37,831 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-08 16:12:37,833 INFO L168 Benchmark]: Toolchain (without parser) took 14780.30 ms. Allocated memory was 160.4 MB in the beginning and 199.2 MB in the end (delta: 38.8 MB). Free memory was 134.4 MB in the beginning and 159.0 MB in the end (delta: -24.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-10-08 16:12:37,833 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 160.4 MB. Free memory is still 130.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-08 16:12:37,834 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.76 ms. Allocated memory is still 160.4 MB. Free memory was 134.0 MB in the beginning and 123.1 MB in the end (delta: 10.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-10-08 16:12:37,834 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.32 ms. Allocated memory is still 160.4 MB. Free memory was 123.1 MB in the beginning and 121.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-08 16:12:37,835 INFO L168 Benchmark]: Boogie Preprocessor took 38.49 ms. Allocated memory is still 160.4 MB. Free memory was 120.8 MB in the beginning and 119.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-08 16:12:37,835 INFO L168 Benchmark]: RCFGBuilder took 1021.69 ms. Allocated memory is still 160.4 MB. Free memory was 119.3 MB in the beginning and 130.5 MB in the end (delta: -11.2 MB). Peak memory consumption was 18.0 MB. Max. memory is 8.0 GB. [2021-10-08 16:12:37,836 INFO L168 Benchmark]: TraceAbstraction took 13278.75 ms. Allocated memory was 160.4 MB in the beginning and 199.2 MB in the end (delta: 38.8 MB). Free memory was 129.9 MB in the beginning and 162.6 MB in the end (delta: -32.7 MB). Peak memory consumption was 6.1 MB. Max. memory is 8.0 GB. [2021-10-08 16:12:37,836 INFO L168 Benchmark]: Witness Printer took 72.63 ms. Allocated memory is still 199.2 MB. Free memory was 162.6 MB in the beginning and 159.0 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-10-08 16:12:37,838 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 160.4 MB. Free memory is still 130.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 297.76 ms. Allocated memory is still 160.4 MB. Free memory was 134.0 MB in the beginning and 123.1 MB in the end (delta: 10.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 55.32 ms. Allocated memory is still 160.4 MB. Free memory was 123.1 MB in the beginning and 121.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 38.49 ms. Allocated memory is still 160.4 MB. Free memory was 120.8 MB in the beginning and 119.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1021.69 ms. Allocated memory is still 160.4 MB. Free memory was 119.3 MB in the beginning and 130.5 MB in the end (delta: -11.2 MB). Peak memory consumption was 18.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 13278.75 ms. Allocated memory was 160.4 MB in the beginning and 199.2 MB in the end (delta: 38.8 MB). Free memory was 129.9 MB in the beginning and 162.6 MB in the end (delta: -32.7 MB). Peak memory consumption was 6.1 MB. Max. memory is 8.0 GB. * Witness Printer took 72.63 ms. Allocated memory is still 199.2 MB. Free memory was 162.6 MB in the beginning and 159.0 MB in the end (delta: 3.6 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: 8082.1ms, 172 PlacesBefore, 36 PlacesAfterwards, 180 TransitionsBefore, 34 TransitionsAfterwards, 842 CoEnabledTransitionPairs, 7 FixpointIterations, 128 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 30 TrivialYvCompositions, 4 ConcurrentYvCompositions, 10 ChoiceCompositions, 195 TotalNumberOfCompositions, 1709 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1305, positive: 1228, positive conditional: 0, positive unconditional: 1228, negative: 77, negative conditional: 0, negative unconditional: 77, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 586, positive: 568, positive conditional: 0, positive unconditional: 568, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 586, positive: 562, positive conditional: 0, positive unconditional: 562, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 24, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 85, positive: 26, positive conditional: 0, positive unconditional: 26, negative: 59, negative conditional: 0, negative unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1305, positive: 660, positive conditional: 0, positive unconditional: 660, negative: 59, negative conditional: 0, negative unconditional: 59, unknown: 586, unknown conditional: 0, unknown unconditional: 586] , Statistics on independence cache: Total cache size (in pairs): 85, Positive cache size: 78, Positive conditional cache size: 0, Positive unconditional cache size: 78, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7 - 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: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 53]: 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: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 111]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 111]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 111]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 111]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 194 locations, 18 error locations. Started 1 CEGAR loops. OverallTime: 13046.3ms, OverallIterations: 13, TraceHistogramMax: 3, EmptinessCheckTime: 16.4ms, AutomataDifference: 761.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8165.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 223 SDtfs, 556 SDslu, 281 SDs, 0 SdLazy, 276 SolverSat, 72 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 335.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 287.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=175occurred in iteration=8, InterpolantAutomatonStates: 60, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 163.7ms AutomataMinimizationTime, 13 MinimizatonAttempts, 580 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 123.5ms SsaConstructionTime, 426.7ms SatisfiabilityAnalysisTime, 958.0ms InterpolantComputationTime, 131 NumberOfCodeBlocks, 120 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 110 ConstructedInterpolants, 0 QuantifiedInterpolants, 385 SizeOfPredicates, 15 NumberOfNonLiveVariables, 992 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 21 InterpolantComputations, 9 PerfectInterpolantSequences, 27/57 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 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-08 16:12:37,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...