./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0455ba49274114922cfe1b7739d9cb0a89e6c868 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Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:09:45,666 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:09:45,669 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:09:45,733 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:09:45,734 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:09:45,736 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:09:45,738 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:09:45,742 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:09:45,745 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:09:45,746 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:09:45,748 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:09:45,750 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:09:45,751 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:09:45,753 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:09:45,756 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:09:45,758 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:09:45,759 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:09:45,761 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:09:45,764 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:09:45,767 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:09:45,770 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:09:45,772 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:09:45,774 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:09:45,775 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:09:45,781 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:09:45,781 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:09:45,782 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:09:45,784 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:09:45,784 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:09:45,786 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:09:45,787 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:09:45,788 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:09:45,789 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:09:45,791 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:09:45,792 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:09:45,793 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:09:45,794 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:09:45,795 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:09:45,795 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:09:45,797 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:09:45,798 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:09:45,799 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-10-13 00:09:45,833 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:09:45,834 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:09:45,835 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:09:45,835 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:09:45,844 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:09:45,845 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:09:45,845 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:09:45,846 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:09:45,846 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 00:09:45,847 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:09:45,848 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:09:45,848 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 00:09:45,849 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:09:45,849 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 00:09:45,849 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-13 00:09:45,850 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 00:09:45,850 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:09:45,851 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 00:09:45,851 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:09:45,851 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:09:45,852 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:09:45,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:09:45,853 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:09:45,853 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:09:45,853 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 00:09:45,854 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:09:45,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 00:09:45,854 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 00:09:45,855 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:09:45,857 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0455ba49274114922cfe1b7739d9cb0a89e6c868 [2021-10-13 00:09:46,242 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:09:46,287 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:09:46,291 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:09:46,293 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:09:46,294 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:09:46,295 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c [2021-10-13 00:09:46,409 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/data/3463f6cb2/c898068fea4d417da489a9b0ce5f7d2a/FLAGd8a56ce10 [2021-10-13 00:09:46,981 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:09:46,982 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c [2021-10-13 00:09:46,995 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/data/3463f6cb2/c898068fea4d417da489a9b0ce5f7d2a/FLAGd8a56ce10 [2021-10-13 00:09:47,325 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/data/3463f6cb2/c898068fea4d417da489a9b0ce5f7d2a [2021-10-13 00:09:47,329 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:09:47,332 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 00:09:47,337 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:09:47,337 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:09:47,342 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:09:47,343 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:09:47" (1/1) ... [2021-10-13 00:09:47,345 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c72d849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:09:47, skipping insertion in model container [2021-10-13 00:09:47,346 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:09:47" (1/1) ... [2021-10-13 00:09:47,354 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:09:47,372 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:09:47,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:09:47,564 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:09:47,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:09:47,597 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:09:47,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:09:47 WrapperNode [2021-10-13 00:09:47,598 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:09:47,599 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 00:09:47,599 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 00:09:47,600 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 00:09:47,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:09:47" (1/1) ... [2021-10-13 00:09:47,615 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:09:47" (1/1) ... [2021-10-13 00:09:47,636 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 00:09:47,637 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:09:47,637 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:09:47,638 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:09:47,648 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:09:47" (1/1) ... [2021-10-13 00:09:47,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:09:47" (1/1) ... [2021-10-13 00:09:47,649 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:09:47" (1/1) ... [2021-10-13 00:09:47,649 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:09:47" (1/1) ... [2021-10-13 00:09:47,652 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:09:47" (1/1) ... [2021-10-13 00:09:47,657 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:09:47" (1/1) ... [2021-10-13 00:09:47,658 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:09:47" (1/1) ... [2021-10-13 00:09:47,659 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:09:47,660 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:09:47,661 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:09:47,661 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:09:47,662 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:09:47" (1/1) ... [2021-10-13 00:09:47,674 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:09:47,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:47,702 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:09:47,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:09:47,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:09:47,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:09:48,006 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:09:48,006 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-13 00:09:48,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:09:48 BoogieIcfgContainer [2021-10-13 00:09:48,009 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:09:48,010 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:09:48,011 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:09:48,028 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:09:48,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:09:47" (1/3) ... [2021-10-13 00:09:48,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57d4533d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:09:48, skipping insertion in model container [2021-10-13 00:09:48,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:09:47" (2/3) ... [2021-10-13 00:09:48,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57d4533d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:09:48, skipping insertion in model container [2021-10-13 00:09:48,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:09:48" (3/3) ... [2021-10-13 00:09:48,032 INFO L111 eAbstractionObserver]: Analyzing ICFG GopanReps-CAV2006-Fig1a.c [2021-10-13 00:09:48,038 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:09:48,038 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-13 00:09:48,138 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:09:48,147 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 00:09:48,158 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-13 00:09:48,197 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 12 states have (on average 1.75) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:48,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 00:09:48,203 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:09:48,204 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 00:09:48,205 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:09:48,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:09:48,228 INFO L82 PathProgramCache]: Analyzing trace with hash 963531, now seen corresponding path program 1 times [2021-10-13 00:09:48,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:09:48,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160577362] [2021-10-13 00:09:48,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:48,253 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:09:48,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:09:48,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:09:48,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:09:48,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160577362] [2021-10-13 00:09:48,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160577362] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:09:48,434 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:09:48,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 00:09:48,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605228432] [2021-10-13 00:09:48,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:09:48,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:09:48,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:09:48,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:09:48,465 INFO L87 Difference]: Start difference. First operand has 19 states, 12 states have (on average 1.75) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:48,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:09:48,554 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2021-10-13 00:09:48,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:09:48,557 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-13 00:09:48,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:09:48,570 INFO L225 Difference]: With dead ends: 49 [2021-10-13 00:09:48,578 INFO L226 Difference]: Without dead ends: 23 [2021-10-13 00:09:48,583 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:09:48,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-13 00:09:48,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2021-10-13 00:09:48,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:48,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-10-13 00:09:48,630 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 4 [2021-10-13 00:09:48,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:09:48,632 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-10-13 00:09:48,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:48,632 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-10-13 00:09:48,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 00:09:48,634 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:09:48,634 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 00:09:48,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 00:09:48,635 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:09:48,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:09:48,641 INFO L82 PathProgramCache]: Analyzing trace with hash 963339, now seen corresponding path program 1 times [2021-10-13 00:09:48,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:09:48,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938919562] [2021-10-13 00:09:48,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:48,644 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:09:48,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:09:48,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:09:48,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:09:48,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938919562] [2021-10-13 00:09:48,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938919562] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:09:48,687 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:09:48,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 00:09:48,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694230590] [2021-10-13 00:09:48,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:09:48,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:09:48,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:09:48,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:09:48,695 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:48,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:09:48,741 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2021-10-13 00:09:48,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:09:48,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-13 00:09:48,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:09:48,743 INFO L225 Difference]: With dead ends: 21 [2021-10-13 00:09:48,744 INFO L226 Difference]: Without dead ends: 20 [2021-10-13 00:09:48,745 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:09:48,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-13 00:09:48,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-13 00:09:48,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:48,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2021-10-13 00:09:48,756 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 4 [2021-10-13 00:09:48,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:09:48,757 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-10-13 00:09:48,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:48,758 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2021-10-13 00:09:48,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 00:09:48,761 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:09:48,762 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 00:09:48,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 00:09:48,763 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:09:48,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:09:48,773 INFO L82 PathProgramCache]: Analyzing trace with hash 29863556, now seen corresponding path program 1 times [2021-10-13 00:09:48,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:09:48,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184282572] [2021-10-13 00:09:48,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:48,781 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:09:48,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:09:48,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:09:48,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:09:48,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184282572] [2021-10-13 00:09:48,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184282572] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:09:48,807 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:09:48,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 00:09:48,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772359671] [2021-10-13 00:09:48,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:09:48,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:09:48,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:09:48,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:09:48,826 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:48,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:09:48,858 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2021-10-13 00:09:48,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:09:48,859 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-13 00:09:48,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:09:48,860 INFO L225 Difference]: With dead ends: 25 [2021-10-13 00:09:48,860 INFO L226 Difference]: Without dead ends: 23 [2021-10-13 00:09:48,861 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:09:48,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-13 00:09:48,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 18. [2021-10-13 00:09:48,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:48,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-10-13 00:09:48,867 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 5 [2021-10-13 00:09:48,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:09:48,867 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-10-13 00:09:48,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:48,868 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-10-13 00:09:48,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 00:09:48,869 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:09:48,869 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:09:48,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 00:09:48,870 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:09:48,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:09:48,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1365891962, now seen corresponding path program 1 times [2021-10-13 00:09:48,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:09:48,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706386896] [2021-10-13 00:09:48,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:48,880 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:09:48,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:09:48,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:09:48,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:09:48,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706386896] [2021-10-13 00:09:48,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706386896] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:09:48,912 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:09:48,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 00:09:48,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838122485] [2021-10-13 00:09:48,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:09:48,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:09:48,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:09:48,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:09:48,915 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:48,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:09:48,926 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2021-10-13 00:09:48,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:09:48,927 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-13 00:09:48,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:09:48,928 INFO L225 Difference]: With dead ends: 18 [2021-10-13 00:09:48,929 INFO L226 Difference]: Without dead ends: 17 [2021-10-13 00:09:48,929 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:09:48,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-13 00:09:48,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-10-13 00:09:48,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:48,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-10-13 00:09:48,934 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 7 [2021-10-13 00:09:48,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:09:48,935 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-10-13 00:09:48,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:48,935 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-10-13 00:09:48,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 00:09:48,936 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:09:48,937 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:09:48,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 00:09:48,937 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:09:48,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:09:48,938 INFO L82 PathProgramCache]: Analyzing trace with hash -767237628, now seen corresponding path program 1 times [2021-10-13 00:09:48,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:09:48,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168518932] [2021-10-13 00:09:48,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:48,940 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:09:48,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:09:48,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:09:48,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:09:48,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168518932] [2021-10-13 00:09:48,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168518932] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:09:48,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381147637] [2021-10-13 00:09:48,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:48,987 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:09:48,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:48,990 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:09:49,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 00:09:49,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:09:49,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 00:09:49,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:09:49,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:09:49,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381147637] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:09:49,218 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:09:49,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2] total 5 [2021-10-13 00:09:49,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072145403] [2021-10-13 00:09:49,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:09:49,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:09:49,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:09:49,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:09:49,222 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:49,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:09:49,358 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2021-10-13 00:09:49,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:09:49,359 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 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 10 [2021-10-13 00:09:49,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:09:49,361 INFO L225 Difference]: With dead ends: 35 [2021-10-13 00:09:49,362 INFO L226 Difference]: Without dead ends: 24 [2021-10-13 00:09:49,363 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 78.4ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:09:49,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-13 00:09:49,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2021-10-13 00:09:49,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 20 states have (on average 1.2) internal successors, (24), 22 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:49,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2021-10-13 00:09:49,374 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 10 [2021-10-13 00:09:49,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:09:49,375 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2021-10-13 00:09:49,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:49,376 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2021-10-13 00:09:49,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 00:09:49,378 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:09:49,378 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1] [2021-10-13 00:09:49,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:49,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:09:49,585 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:09:49,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:09:49,587 INFO L82 PathProgramCache]: Analyzing trace with hash -907820675, now seen corresponding path program 2 times [2021-10-13 00:09:49,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:09:49,587 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979671942] [2021-10-13 00:09:49,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:49,589 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:09:49,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:09:49,654 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 00:09:49,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:09:49,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979671942] [2021-10-13 00:09:49,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979671942] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:09:49,655 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:09:49,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:09:49,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390230666] [2021-10-13 00:09:49,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:09:49,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:09:49,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:09:49,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:09:49,658 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:49,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:09:49,686 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2021-10-13 00:09:49,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:09:49,686 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 00:09:49,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:09:49,688 INFO L225 Difference]: With dead ends: 32 [2021-10-13 00:09:49,688 INFO L226 Difference]: Without dead ends: 30 [2021-10-13 00:09:49,688 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:09:49,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-13 00:09:49,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2021-10-13 00:09:49,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 25 states have (on average 1.2) internal successors, (30), 26 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:49,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2021-10-13 00:09:49,695 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 16 [2021-10-13 00:09:49,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:09:49,695 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2021-10-13 00:09:49,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:49,696 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2021-10-13 00:09:49,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 00:09:49,697 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:09:49,697 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1] [2021-10-13 00:09:49,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 00:09:49,698 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:09:49,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:09:49,698 INFO L82 PathProgramCache]: Analyzing trace with hash -907820867, now seen corresponding path program 1 times [2021-10-13 00:09:49,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:09:49,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488566240] [2021-10-13 00:09:49,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:49,699 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:09:49,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:09:49,823 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:09:49,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:09:49,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488566240] [2021-10-13 00:09:49,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488566240] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:09:49,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124027931] [2021-10-13 00:09:49,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:49,825 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:09:49,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:49,828 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:09:49,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 00:09:49,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:09:49,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:09:49,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:09:49,990 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:09:49,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124027931] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:09:49,990 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:09:49,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-10-13 00:09:49,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635555909] [2021-10-13 00:09:49,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:09:49,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:09:49,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:09:49,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:09:49,993 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:50,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:09:50,060 INFO L93 Difference]: Finished difference Result 60 states and 69 transitions. [2021-10-13 00:09:50,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:09:50,061 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 00:09:50,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:09:50,063 INFO L225 Difference]: With dead ends: 60 [2021-10-13 00:09:50,063 INFO L226 Difference]: Without dead ends: 59 [2021-10-13 00:09:50,064 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.6ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:09:50,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-10-13 00:09:50,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 47. [2021-10-13 00:09:50,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 45 states have (on average 1.2444444444444445) internal successors, (56), 46 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:50,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 56 transitions. [2021-10-13 00:09:50,079 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 56 transitions. Word has length 16 [2021-10-13 00:09:50,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:09:50,079 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 56 transitions. [2021-10-13 00:09:50,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:50,085 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 56 transitions. [2021-10-13 00:09:50,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 00:09:50,086 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:09:50,087 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-10-13 00:09:50,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:50,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-10-13 00:09:50,301 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:09:50,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:09:50,302 INFO L82 PathProgramCache]: Analyzing trace with hash -537305888, now seen corresponding path program 1 times [2021-10-13 00:09:50,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:09:50,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317745936] [2021-10-13 00:09:50,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:50,303 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:09:50,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:09:50,344 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 00:09:50,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:09:50,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317745936] [2021-10-13 00:09:50,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317745936] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:09:50,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868398464] [2021-10-13 00:09:50,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:50,346 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:09:50,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:50,361 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:09:50,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 00:09:50,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:09:50,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:09:50,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:09:50,584 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:09:50,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868398464] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:09:50,585 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:09:50,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-13 00:09:50,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57060794] [2021-10-13 00:09:50,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:09:50,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:09:50,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:09:50,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:09:50,588 INFO L87 Difference]: Start difference. First operand 47 states and 56 transitions. Second operand has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:50,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:09:50,631 INFO L93 Difference]: Finished difference Result 75 states and 91 transitions. [2021-10-13 00:09:50,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:09:50,632 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-13 00:09:50,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:09:50,633 INFO L225 Difference]: With dead ends: 75 [2021-10-13 00:09:50,633 INFO L226 Difference]: Without dead ends: 40 [2021-10-13 00:09:50,634 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 22.7ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:09:50,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-10-13 00:09:50,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2021-10-13 00:09:50,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 38 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:50,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-10-13 00:09:50,641 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 18 [2021-10-13 00:09:50,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:09:50,641 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-10-13 00:09:50,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:50,642 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-10-13 00:09:50,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 00:09:50,643 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:09:50,643 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1] [2021-10-13 00:09:50,686 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-10-13 00:09:50,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:09:50,865 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:09:50,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:09:50,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1586405002, now seen corresponding path program 2 times [2021-10-13 00:09:50,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:09:50,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896883720] [2021-10-13 00:09:50,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:50,868 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:09:50,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:09:50,952 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:09:50,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:09:50,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896883720] [2021-10-13 00:09:50,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896883720] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:09:50,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290151364] [2021-10-13 00:09:50,953 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:09:50,957 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:09:50,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:50,975 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:09:50,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-13 00:09:51,037 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:09:51,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:09:51,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 00:09:51,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:09:51,135 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:09:51,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290151364] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:09:51,135 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:09:51,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-10-13 00:09:51,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210469363] [2021-10-13 00:09:51,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:09:51,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:09:51,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:09:51,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:09:51,139 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:51,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:09:51,172 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2021-10-13 00:09:51,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:09:51,173 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-13 00:09:51,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:09:51,174 INFO L225 Difference]: With dead ends: 42 [2021-10-13 00:09:51,174 INFO L226 Difference]: Without dead ends: 41 [2021-10-13 00:09:51,175 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.8ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:09:51,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-13 00:09:51,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2021-10-13 00:09:51,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 38 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:51,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-10-13 00:09:51,181 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 22 [2021-10-13 00:09:51,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:09:51,181 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-10-13 00:09:51,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:51,182 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-10-13 00:09:51,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-13 00:09:51,183 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:09:51,183 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1] [2021-10-13 00:09:51,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:51,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:09:51,398 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:09:51,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:09:51,399 INFO L82 PathProgramCache]: Analyzing trace with hash -89664657, now seen corresponding path program 3 times [2021-10-13 00:09:51,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:09:51,399 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361170358] [2021-10-13 00:09:51,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:51,400 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:09:51,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:09:51,525 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:09:51,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:09:51,525 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361170358] [2021-10-13 00:09:51,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361170358] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:09:51,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027320837] [2021-10-13 00:09:51,526 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:09:51,526 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:09:51,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:51,527 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:09:51,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-13 00:09:51,598 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-13 00:09:51,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:09:51,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 00:09:51,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:09:51,760 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:09:51,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027320837] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:09:51,761 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:09:51,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-10-13 00:09:51,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406218945] [2021-10-13 00:09:51,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:09:51,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:09:51,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:09:51,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:09:51,763 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:51,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:09:51,828 INFO L93 Difference]: Finished difference Result 107 states and 120 transitions. [2021-10-13 00:09:51,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:09:51,830 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-13 00:09:51,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:09:51,831 INFO L225 Difference]: With dead ends: 107 [2021-10-13 00:09:51,831 INFO L226 Difference]: Without dead ends: 106 [2021-10-13 00:09:51,832 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.6ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:09:51,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-10-13 00:09:51,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 96. [2021-10-13 00:09:51,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 94 states have (on average 1.1595744680851063) internal successors, (109), 95 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:51,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 109 transitions. [2021-10-13 00:09:51,861 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 109 transitions. Word has length 28 [2021-10-13 00:09:51,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:09:51,862 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 109 transitions. [2021-10-13 00:09:51,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:51,862 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 109 transitions. [2021-10-13 00:09:51,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-13 00:09:51,864 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:09:51,864 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1] [2021-10-13 00:09:51,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:52,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-13 00:09:52,084 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:09:52,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:09:52,085 INFO L82 PathProgramCache]: Analyzing trace with hash 661989032, now seen corresponding path program 4 times [2021-10-13 00:09:52,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:09:52,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510994343] [2021-10-13 00:09:52,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:52,085 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:09:52,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:09:52,208 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:09:52,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:09:52,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510994343] [2021-10-13 00:09:52,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510994343] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:09:52,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966341366] [2021-10-13 00:09:52,209 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 00:09:52,209 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:09:52,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:52,211 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:09:52,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-13 00:09:52,283 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 00:09:52,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:09:52,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 00:09:52,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:09:52,433 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:09:52,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966341366] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:09:52,434 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:09:52,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-13 00:09:52,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566098123] [2021-10-13 00:09:52,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 00:09:52,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:09:52,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 00:09:52,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:09:52,436 INFO L87 Difference]: Start difference. First operand 96 states and 109 transitions. Second operand has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:52,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:09:52,503 INFO L93 Difference]: Finished difference Result 183 states and 210 transitions. [2021-10-13 00:09:52,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:09:52,503 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-10-13 00:09:52,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:09:52,505 INFO L225 Difference]: With dead ends: 183 [2021-10-13 00:09:52,506 INFO L226 Difference]: Without dead ends: 182 [2021-10-13 00:09:52,506 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.5ms TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:09:52,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-10-13 00:09:52,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 111. [2021-10-13 00:09:52,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 109 states have (on average 1.165137614678899) internal successors, (127), 110 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:52,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 127 transitions. [2021-10-13 00:09:52,520 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 127 transitions. Word has length 34 [2021-10-13 00:09:52,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:09:52,521 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 127 transitions. [2021-10-13 00:09:52,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:52,521 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 127 transitions. [2021-10-13 00:09:52,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-13 00:09:52,523 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:09:52,523 INFO L512 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 2, 2, 2, 1, 1] [2021-10-13 00:09:52,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:52,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:09:52,749 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:09:52,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:09:52,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1050459643, now seen corresponding path program 2 times [2021-10-13 00:09:52,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:09:52,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822113479] [2021-10-13 00:09:52,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:52,750 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:09:52,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:09:52,846 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 22 proven. 44 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 00:09:52,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:09:52,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822113479] [2021-10-13 00:09:52,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822113479] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:09:52,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275413130] [2021-10-13 00:09:52,848 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:09:52,848 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:09:52,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:52,863 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:09:52,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-13 00:09:52,949 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:09:52,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:09:52,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 00:09:52,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:09:53,076 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 22 proven. 44 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 00:09:53,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275413130] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:09:53,077 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:09:53,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-13 00:09:53,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248309261] [2021-10-13 00:09:53,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:09:53,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:09:53,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:09:53,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:09:53,080 INFO L87 Difference]: Start difference. First operand 111 states and 127 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:53,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:09:53,119 INFO L93 Difference]: Finished difference Result 211 states and 244 transitions. [2021-10-13 00:09:53,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:09:53,120 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-10-13 00:09:53,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:09:53,123 INFO L225 Difference]: With dead ends: 211 [2021-10-13 00:09:53,123 INFO L226 Difference]: Without dead ends: 121 [2021-10-13 00:09:53,124 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.6ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:09:53,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-10-13 00:09:53,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 117. [2021-10-13 00:09:53,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 115 states have (on average 1.1565217391304348) internal successors, (133), 116 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:53,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 133 transitions. [2021-10-13 00:09:53,137 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 133 transitions. Word has length 36 [2021-10-13 00:09:53,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:09:53,137 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 133 transitions. [2021-10-13 00:09:53,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:53,138 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 133 transitions. [2021-10-13 00:09:53,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-13 00:09:53,140 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:09:53,140 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1] [2021-10-13 00:09:53,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:53,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-13 00:09:53,369 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:09:53,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:09:53,369 INFO L82 PathProgramCache]: Analyzing trace with hash 855337761, now seen corresponding path program 5 times [2021-10-13 00:09:53,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:09:53,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355425568] [2021-10-13 00:09:53,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:53,370 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:09:53,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:09:53,476 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:09:53,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:09:53,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355425568] [2021-10-13 00:09:53,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355425568] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:09:53,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267255039] [2021-10-13 00:09:53,478 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 00:09:53,478 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:09:53,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:53,485 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:09:53,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-13 00:09:53,603 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-10-13 00:09:53,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:09:53,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 00:09:53,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:09:53,789 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:09:53,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267255039] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:09:53,789 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:09:53,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-10-13 00:09:53,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059687583] [2021-10-13 00:09:53,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 00:09:53,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:09:53,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 00:09:53,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:09:53,792 INFO L87 Difference]: Start difference. First operand 117 states and 133 transitions. Second operand has 9 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:53,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:09:53,877 INFO L93 Difference]: Finished difference Result 221 states and 254 transitions. [2021-10-13 00:09:53,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 00:09:53,878 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-10-13 00:09:53,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:09:53,880 INFO L225 Difference]: With dead ends: 221 [2021-10-13 00:09:53,880 INFO L226 Difference]: Without dead ends: 220 [2021-10-13 00:09:53,881 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.2ms TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:09:53,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-10-13 00:09:53,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 132. [2021-10-13 00:09:53,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 130 states have (on average 1.1615384615384616) internal successors, (151), 131 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:53,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 151 transitions. [2021-10-13 00:09:53,895 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 151 transitions. Word has length 40 [2021-10-13 00:09:53,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:09:53,895 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 151 transitions. [2021-10-13 00:09:53,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:53,896 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 151 transitions. [2021-10-13 00:09:53,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-13 00:09:53,897 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:09:53,897 INFO L512 BasicCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 2, 2, 2, 1, 1] [2021-10-13 00:09:53,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:54,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-13 00:09:54,121 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:09:54,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:09:54,121 INFO L82 PathProgramCache]: Analyzing trace with hash 74075198, now seen corresponding path program 3 times [2021-10-13 00:09:54,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:09:54,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718933431] [2021-10-13 00:09:54,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:54,122 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:09:54,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:09:54,235 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 27 proven. 70 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 00:09:54,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:09:54,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718933431] [2021-10-13 00:09:54,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718933431] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:09:54,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184076633] [2021-10-13 00:09:54,236 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:09:54,236 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:09:54,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:54,238 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:09:54,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-13 00:09:54,370 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-13 00:09:54,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:09:54,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:09:54,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:09:54,535 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 48 proven. 8 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-10-13 00:09:54,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184076633] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:09:54,536 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:09:54,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 11 [2021-10-13 00:09:54,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407613459] [2021-10-13 00:09:54,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 00:09:54,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:09:54,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 00:09:54,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:09:54,538 INFO L87 Difference]: Start difference. First operand 132 states and 151 transitions. Second operand has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:54,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:09:54,616 INFO L93 Difference]: Finished difference Result 169 states and 194 transitions. [2021-10-13 00:09:54,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 00:09:54,617 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-10-13 00:09:54,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:09:54,618 INFO L225 Difference]: With dead ends: 169 [2021-10-13 00:09:54,618 INFO L226 Difference]: Without dead ends: 64 [2021-10-13 00:09:54,619 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.6ms TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:09:54,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-13 00:09:54,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2021-10-13 00:09:54,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 61 states have (on average 1.0819672131147542) internal successors, (66), 62 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:54,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 66 transitions. [2021-10-13 00:09:54,625 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 66 transitions. Word has length 42 [2021-10-13 00:09:54,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:09:54,625 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 66 transitions. [2021-10-13 00:09:54,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:54,626 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 66 transitions. [2021-10-13 00:09:54,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-13 00:09:54,627 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:09:54,627 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1] [2021-10-13 00:09:54,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:54,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-13 00:09:54,841 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:09:54,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:09:54,841 INFO L82 PathProgramCache]: Analyzing trace with hash 714125530, now seen corresponding path program 6 times [2021-10-13 00:09:54,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:09:54,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280506667] [2021-10-13 00:09:54,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:54,842 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:09:54,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:09:54,950 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:09:54,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:09:54,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280506667] [2021-10-13 00:09:54,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280506667] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:09:54,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349849731] [2021-10-13 00:09:54,952 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 00:09:54,952 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:09:54,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:54,966 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:09:54,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-13 00:09:55,104 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-10-13 00:09:55,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:09:55,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 00:09:55,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:09:55,274 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:09:55,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349849731] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:09:55,274 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:09:55,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-10-13 00:09:55,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036838108] [2021-10-13 00:09:55,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 00:09:55,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:09:55,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 00:09:55,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:09:55,279 INFO L87 Difference]: Start difference. First operand 63 states and 66 transitions. Second operand has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:55,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:09:55,363 INFO L93 Difference]: Finished difference Result 216 states and 245 transitions. [2021-10-13 00:09:55,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 00:09:55,364 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-10-13 00:09:55,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:09:55,366 INFO L225 Difference]: With dead ends: 216 [2021-10-13 00:09:55,366 INFO L226 Difference]: Without dead ends: 215 [2021-10-13 00:09:55,370 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.8ms TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:09:55,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-10-13 00:09:55,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 198. [2021-10-13 00:09:55,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 196 states have (on average 1.153061224489796) internal successors, (226), 197 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:55,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 226 transitions. [2021-10-13 00:09:55,382 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 226 transitions. Word has length 46 [2021-10-13 00:09:55,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:09:55,382 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 226 transitions. [2021-10-13 00:09:55,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:55,383 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 226 transitions. [2021-10-13 00:09:55,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-13 00:09:55,387 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:09:55,387 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1] [2021-10-13 00:09:55,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:55,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-13 00:09:55,601 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:09:55,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:09:55,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1497430061, now seen corresponding path program 7 times [2021-10-13 00:09:55,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:09:55,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955531315] [2021-10-13 00:09:55,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:55,602 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:09:55,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:09:55,738 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:09:55,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:09:55,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955531315] [2021-10-13 00:09:55,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955531315] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:09:55,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404493384] [2021-10-13 00:09:55,739 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 00:09:55,739 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:09:55,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:55,741 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:09:55,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-13 00:09:55,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:09:55,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 00:09:55,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:09:56,085 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:09:56,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404493384] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:09:56,086 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:09:56,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-10-13 00:09:56,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894485812] [2021-10-13 00:09:56,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 00:09:56,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:09:56,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 00:09:56,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:09:56,089 INFO L87 Difference]: Start difference. First operand 198 states and 226 transitions. Second operand has 11 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:56,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:09:56,201 INFO L93 Difference]: Finished difference Result 378 states and 436 transitions. [2021-10-13 00:09:56,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 00:09:56,202 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-10-13 00:09:56,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:09:56,205 INFO L225 Difference]: With dead ends: 378 [2021-10-13 00:09:56,205 INFO L226 Difference]: Without dead ends: 377 [2021-10-13 00:09:56,206 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.8ms TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:09:56,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-10-13 00:09:56,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 219. [2021-10-13 00:09:56,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 217 states have (on average 1.1566820276497696) internal successors, (251), 218 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:56,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 251 transitions. [2021-10-13 00:09:56,224 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 251 transitions. Word has length 52 [2021-10-13 00:09:56,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:09:56,224 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 251 transitions. [2021-10-13 00:09:56,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:56,225 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 251 transitions. [2021-10-13 00:09:56,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-10-13 00:09:56,235 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:09:56,235 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1] [2021-10-13 00:09:56,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:56,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-10-13 00:09:56,445 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:09:56,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:09:56,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1807450100, now seen corresponding path program 8 times [2021-10-13 00:09:56,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:09:56,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312985051] [2021-10-13 00:09:56,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:56,446 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:09:56,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:09:56,569 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:09:56,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:09:56,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312985051] [2021-10-13 00:09:56,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312985051] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:09:56,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184383475] [2021-10-13 00:09:56,570 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:09:56,570 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:09:56,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:56,572 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:09:56,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-13 00:09:56,749 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:09:56,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:09:56,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 00:09:56,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:09:57,038 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:09:57,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184383475] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:09:57,038 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:09:57,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-10-13 00:09:57,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874130292] [2021-10-13 00:09:57,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 00:09:57,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:09:57,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 00:09:57,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-13 00:09:57,041 INFO L87 Difference]: Start difference. First operand 219 states and 251 transitions. Second operand has 12 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:57,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:09:57,158 INFO L93 Difference]: Finished difference Result 422 states and 488 transitions. [2021-10-13 00:09:57,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 00:09:57,159 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-10-13 00:09:57,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:09:57,162 INFO L225 Difference]: With dead ends: 422 [2021-10-13 00:09:57,163 INFO L226 Difference]: Without dead ends: 421 [2021-10-13 00:09:57,163 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.0ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-13 00:09:57,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2021-10-13 00:09:57,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 240. [2021-10-13 00:09:57,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 238 states have (on average 1.1596638655462186) internal successors, (276), 239 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:57,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 276 transitions. [2021-10-13 00:09:57,183 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 276 transitions. Word has length 58 [2021-10-13 00:09:57,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:09:57,184 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 276 transitions. [2021-10-13 00:09:57,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:57,185 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 276 transitions. [2021-10-13 00:09:57,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-13 00:09:57,186 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:09:57,186 INFO L512 BasicCegarLoop]: trace histogram [10, 9, 9, 7, 7, 7, 3, 3, 3, 1, 1] [2021-10-13 00:09:57,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:57,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-13 00:09:57,411 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:09:57,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:09:57,411 INFO L82 PathProgramCache]: Analyzing trace with hash -410764061, now seen corresponding path program 4 times [2021-10-13 00:09:57,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:09:57,412 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256886616] [2021-10-13 00:09:57,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:57,412 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:09:57,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:09:57,534 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 67 proven. 140 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-13 00:09:57,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:09:57,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256886616] [2021-10-13 00:09:57,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256886616] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:09:57,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949129451] [2021-10-13 00:09:57,535 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 00:09:57,535 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:09:57,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:57,537 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:09:57,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-13 00:09:57,737 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 00:09:57,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:09:57,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 00:09:57,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:09:57,912 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 67 proven. 140 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-13 00:09:57,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949129451] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:09:57,912 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:09:57,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-10-13 00:09:57,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373583556] [2021-10-13 00:09:57,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 00:09:57,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:09:57,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 00:09:57,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:09:57,915 INFO L87 Difference]: Start difference. First operand 240 states and 276 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:57,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:09:57,960 INFO L93 Difference]: Finished difference Result 451 states and 524 transitions. [2021-10-13 00:09:57,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 00:09:57,960 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-10-13 00:09:57,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:09:57,963 INFO L225 Difference]: With dead ends: 451 [2021-10-13 00:09:57,963 INFO L226 Difference]: Without dead ends: 250 [2021-10-13 00:09:57,964 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.1ms TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:09:57,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-10-13 00:09:57,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 246. [2021-10-13 00:09:57,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 244 states have (on average 1.1557377049180328) internal successors, (282), 245 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:57,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 282 transitions. [2021-10-13 00:09:57,978 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 282 transitions. Word has length 60 [2021-10-13 00:09:57,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:09:57,979 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 282 transitions. [2021-10-13 00:09:57,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:57,979 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 282 transitions. [2021-10-13 00:09:57,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-10-13 00:09:57,980 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:09:57,980 INFO L512 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1] [2021-10-13 00:09:58,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:58,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-13 00:09:58,198 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:09:58,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:09:58,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1024665989, now seen corresponding path program 9 times [2021-10-13 00:09:58,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:09:58,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973237773] [2021-10-13 00:09:58,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:58,199 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:09:58,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:09:58,345 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:09:58,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:09:58,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973237773] [2021-10-13 00:09:58,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973237773] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:09:58,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127226977] [2021-10-13 00:09:58,346 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:09:58,347 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:09:58,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:58,348 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:09:58,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-13 00:09:58,592 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-10-13 00:09:58,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:09:58,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 00:09:58,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:09:58,855 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:09:58,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127226977] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:09:58,855 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:09:58,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-10-13 00:09:58,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106163325] [2021-10-13 00:09:58,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 00:09:58,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:09:58,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 00:09:58,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-10-13 00:09:58,858 INFO L87 Difference]: Start difference. First operand 246 states and 282 transitions. Second operand has 13 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:58,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:09:58,963 INFO L93 Difference]: Finished difference Result 472 states and 546 transitions. [2021-10-13 00:09:58,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 00:09:58,964 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-10-13 00:09:58,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:09:58,967 INFO L225 Difference]: With dead ends: 472 [2021-10-13 00:09:58,968 INFO L226 Difference]: Without dead ends: 471 [2021-10-13 00:09:58,969 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 86.5ms TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-10-13 00:09:58,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2021-10-13 00:09:58,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 267. [2021-10-13 00:09:58,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 265 states have (on average 1.1584905660377358) internal successors, (307), 266 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:58,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 307 transitions. [2021-10-13 00:09:58,987 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 307 transitions. Word has length 64 [2021-10-13 00:09:58,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:09:58,987 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 307 transitions. [2021-10-13 00:09:58,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:58,988 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 307 transitions. [2021-10-13 00:09:58,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-10-13 00:09:58,989 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:09:58,989 INFO L512 BasicCegarLoop]: trace histogram [11, 10, 10, 8, 8, 8, 3, 3, 3, 1, 1] [2021-10-13 00:09:59,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-13 00:09:59,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:09:59,213 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:09:59,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:09:59,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1756468196, now seen corresponding path program 5 times [2021-10-13 00:09:59,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:09:59,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545114597] [2021-10-13 00:09:59,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:09:59,214 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:09:59,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:09:59,334 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 76 proven. 184 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-13 00:09:59,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:09:59,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545114597] [2021-10-13 00:09:59,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545114597] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:09:59,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165091807] [2021-10-13 00:09:59,335 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 00:09:59,335 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:09:59,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:09:59,341 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:09:59,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-13 00:09:59,603 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-10-13 00:09:59,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:09:59,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 00:09:59,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:09:59,823 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 76 proven. 184 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-13 00:09:59,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165091807] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:09:59,823 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:09:59,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-10-13 00:09:59,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575055513] [2021-10-13 00:09:59,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 00:09:59,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:09:59,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 00:09:59,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:09:59,826 INFO L87 Difference]: Start difference. First operand 267 states and 307 transitions. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:59,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:09:59,875 INFO L93 Difference]: Finished difference Result 499 states and 580 transitions. [2021-10-13 00:09:59,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 00:09:59,876 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-10-13 00:09:59,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:09:59,879 INFO L225 Difference]: With dead ends: 499 [2021-10-13 00:09:59,879 INFO L226 Difference]: Without dead ends: 277 [2021-10-13 00:09:59,881 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 62.3ms TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:09:59,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2021-10-13 00:09:59,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 273. [2021-10-13 00:09:59,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 271 states have (on average 1.154981549815498) internal successors, (313), 272 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:59,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 313 transitions. [2021-10-13 00:09:59,896 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 313 transitions. Word has length 66 [2021-10-13 00:09:59,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:09:59,897 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 313 transitions. [2021-10-13 00:09:59,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:09:59,897 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 313 transitions. [2021-10-13 00:09:59,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-10-13 00:09:59,898 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:09:59,899 INFO L512 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 1, 1] [2021-10-13 00:09:59,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-13 00:10:00,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:10:00,114 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:10:00,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:10:00,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1856957378, now seen corresponding path program 10 times [2021-10-13 00:10:00,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:10:00,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609047880] [2021-10-13 00:10:00,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:10:00,115 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:10:00,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:10:00,300 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 0 proven. 363 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:00,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:10:00,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609047880] [2021-10-13 00:10:00,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609047880] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:10:00,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50312351] [2021-10-13 00:10:00,301 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 00:10:00,301 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:10:00,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:10:00,303 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:10:00,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-13 00:10:00,574 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 00:10:00,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:10:00,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 00:10:00,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:10:00,816 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 0 proven. 363 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:00,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50312351] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:10:00,817 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:10:00,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2021-10-13 00:10:00,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500842894] [2021-10-13 00:10:00,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 00:10:00,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:10:00,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 00:10:00,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-10-13 00:10:00,819 INFO L87 Difference]: Start difference. First operand 273 states and 313 transitions. Second operand has 14 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:00,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:10:00,947 INFO L93 Difference]: Finished difference Result 522 states and 604 transitions. [2021-10-13 00:10:00,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 00:10:00,948 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-10-13 00:10:00,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:10:00,953 INFO L225 Difference]: With dead ends: 522 [2021-10-13 00:10:00,953 INFO L226 Difference]: Without dead ends: 521 [2021-10-13 00:10:00,954 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 79.5ms TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-10-13 00:10:00,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2021-10-13 00:10:00,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 294. [2021-10-13 00:10:00,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 292 states have (on average 1.1575342465753424) internal successors, (338), 293 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:00,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 338 transitions. [2021-10-13 00:10:00,971 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 338 transitions. Word has length 70 [2021-10-13 00:10:00,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:10:00,972 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 338 transitions. [2021-10-13 00:10:00,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:00,973 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 338 transitions. [2021-10-13 00:10:00,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-10-13 00:10:00,974 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:10:00,974 INFO L512 BasicCegarLoop]: trace histogram [12, 11, 11, 9, 9, 9, 3, 3, 3, 1, 1] [2021-10-13 00:10:01,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-13 00:10:01,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:10:01,197 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:10:01,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:10:01,197 INFO L82 PathProgramCache]: Analyzing trace with hash -742617963, now seen corresponding path program 6 times [2021-10-13 00:10:01,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:10:01,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132926023] [2021-10-13 00:10:01,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:10:01,198 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:10:01,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:10:01,309 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 85 proven. 234 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-13 00:10:01,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:10:01,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132926023] [2021-10-13 00:10:01,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132926023] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:10:01,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710298042] [2021-10-13 00:10:01,310 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 00:10:01,310 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:10:01,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:10:01,312 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:10:01,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-13 00:10:01,619 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-13 00:10:01,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:10:01,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 00:10:01,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:10:01,901 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 126 proven. 21 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2021-10-13 00:10:01,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710298042] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:10:01,902 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:10:01,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5] total 16 [2021-10-13 00:10:01,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606734150] [2021-10-13 00:10:01,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 00:10:01,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:10:01,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 00:10:01,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-10-13 00:10:01,905 INFO L87 Difference]: Start difference. First operand 294 states and 338 transitions. Second operand has 16 states, 16 states have (on average 5.8125) internal successors, (93), 16 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:01,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:10:01,997 INFO L93 Difference]: Finished difference Result 615 states and 724 transitions. [2021-10-13 00:10:01,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 00:10:01,998 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.8125) internal successors, (93), 16 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-10-13 00:10:01,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:10:02,001 INFO L225 Difference]: With dead ends: 615 [2021-10-13 00:10:02,002 INFO L226 Difference]: Without dead ends: 372 [2021-10-13 00:10:02,004 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 111.3ms TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-10-13 00:10:02,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2021-10-13 00:10:02,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 363. [2021-10-13 00:10:02,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 361 states have (on average 1.1523545706371192) internal successors, (416), 362 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:02,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 416 transitions. [2021-10-13 00:10:02,023 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 416 transitions. Word has length 72 [2021-10-13 00:10:02,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:10:02,024 INFO L470 AbstractCegarLoop]: Abstraction has 363 states and 416 transitions. [2021-10-13 00:10:02,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.8125) internal successors, (93), 16 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:02,025 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 416 transitions. [2021-10-13 00:10:02,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-10-13 00:10:02,026 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:10:02,026 INFO L512 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 1, 1] [2021-10-13 00:10:02,074 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-10-13 00:10:02,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:10:02,247 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:10:02,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:10:02,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1336389577, now seen corresponding path program 11 times [2021-10-13 00:10:02,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:10:02,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571514779] [2021-10-13 00:10:02,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:10:02,248 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:10:02,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:10:02,433 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:02,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:10:02,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571514779] [2021-10-13 00:10:02,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571514779] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:10:02,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267968824] [2021-10-13 00:10:02,435 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 00:10:02,435 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:10:02,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:10:02,441 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:10:02,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-13 00:10:02,762 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2021-10-13 00:10:02,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:10:02,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 00:10:02,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:10:03,014 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:03,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267968824] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:10:03,015 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:10:03,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2021-10-13 00:10:03,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713444080] [2021-10-13 00:10:03,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 00:10:03,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:10:03,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 00:10:03,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-10-13 00:10:03,018 INFO L87 Difference]: Start difference. First operand 363 states and 416 transitions. Second operand has 15 states, 14 states have (on average 5.428571428571429) internal successors, (76), 14 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:03,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:10:03,165 INFO L93 Difference]: Finished difference Result 695 states and 804 transitions. [2021-10-13 00:10:03,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 00:10:03,165 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 5.428571428571429) internal successors, (76), 14 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-10-13 00:10:03,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:10:03,171 INFO L225 Difference]: With dead ends: 695 [2021-10-13 00:10:03,171 INFO L226 Difference]: Without dead ends: 694 [2021-10-13 00:10:03,172 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 109.1ms TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-10-13 00:10:03,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2021-10-13 00:10:03,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 390. [2021-10-13 00:10:03,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 388 states have (on average 1.1546391752577319) internal successors, (448), 389 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:03,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 448 transitions. [2021-10-13 00:10:03,198 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 448 transitions. Word has length 76 [2021-10-13 00:10:03,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:10:03,199 INFO L470 AbstractCegarLoop]: Abstraction has 390 states and 448 transitions. [2021-10-13 00:10:03,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 5.428571428571429) internal successors, (76), 14 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:03,199 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 448 transitions. [2021-10-13 00:10:03,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-10-13 00:10:03,201 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:10:03,201 INFO L512 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 1, 1] [2021-10-13 00:10:03,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-13 00:10:03,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:10:03,415 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:10:03,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:10:03,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1313411728, now seen corresponding path program 12 times [2021-10-13 00:10:03,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:10:03,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803066800] [2021-10-13 00:10:03,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:10:03,417 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:10:03,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:10:03,616 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 0 proven. 507 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:03,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:10:03,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803066800] [2021-10-13 00:10:03,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803066800] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:10:03,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258769947] [2021-10-13 00:10:03,617 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 00:10:03,617 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:10:03,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:10:03,619 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:10:03,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-13 00:10:03,970 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2021-10-13 00:10:03,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:10:03,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 00:10:03,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:10:04,235 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 0 proven. 507 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:04,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258769947] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:10:04,236 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:10:04,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2021-10-13 00:10:04,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13330109] [2021-10-13 00:10:04,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 00:10:04,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:10:04,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 00:10:04,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-10-13 00:10:04,239 INFO L87 Difference]: Start difference. First operand 390 states and 448 transitions. Second operand has 16 states, 15 states have (on average 5.466666666666667) internal successors, (82), 15 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:04,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:10:04,377 INFO L93 Difference]: Finished difference Result 751 states and 870 transitions. [2021-10-13 00:10:04,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 00:10:04,378 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.466666666666667) internal successors, (82), 15 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-10-13 00:10:04,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:10:04,383 INFO L225 Difference]: With dead ends: 751 [2021-10-13 00:10:04,384 INFO L226 Difference]: Without dead ends: 750 [2021-10-13 00:10:04,385 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 126.6ms TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-10-13 00:10:04,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2021-10-13 00:10:04,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 417. [2021-10-13 00:10:04,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 415 states have (on average 1.1566265060240963) internal successors, (480), 416 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:04,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 480 transitions. [2021-10-13 00:10:04,418 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 480 transitions. Word has length 82 [2021-10-13 00:10:04,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:10:04,419 INFO L470 AbstractCegarLoop]: Abstraction has 417 states and 480 transitions. [2021-10-13 00:10:04,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.466666666666667) internal successors, (82), 15 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:04,419 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 480 transitions. [2021-10-13 00:10:04,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-10-13 00:10:04,421 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:10:04,421 INFO L512 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 1, 1] [2021-10-13 00:10:04,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-13 00:10:04,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:10:04,637 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:10:04,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:10:04,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1372652567, now seen corresponding path program 13 times [2021-10-13 00:10:04,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:10:04,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341307912] [2021-10-13 00:10:04,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:10:04,638 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:10:04,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:10:04,846 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:04,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:10:04,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341307912] [2021-10-13 00:10:04,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341307912] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:10:04,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294799890] [2021-10-13 00:10:04,847 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 00:10:04,848 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:10:04,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:10:04,853 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:10:04,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-13 00:10:05,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:10:05,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 00:10:05,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:10:05,686 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:05,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294799890] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:10:05,687 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:10:05,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2021-10-13 00:10:05,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865871911] [2021-10-13 00:10:05,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 00:10:05,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:10:05,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 00:10:05,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-10-13 00:10:05,690 INFO L87 Difference]: Start difference. First operand 417 states and 480 transitions. Second operand has 17 states, 16 states have (on average 5.5) internal successors, (88), 16 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:05,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:10:05,848 INFO L93 Difference]: Finished difference Result 807 states and 936 transitions. [2021-10-13 00:10:05,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 00:10:05,849 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 5.5) internal successors, (88), 16 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-10-13 00:10:05,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:10:05,854 INFO L225 Difference]: With dead ends: 807 [2021-10-13 00:10:05,854 INFO L226 Difference]: Without dead ends: 806 [2021-10-13 00:10:05,855 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 135.4ms TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-10-13 00:10:05,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2021-10-13 00:10:05,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 444. [2021-10-13 00:10:05,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 442 states have (on average 1.158371040723982) internal successors, (512), 443 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:05,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 512 transitions. [2021-10-13 00:10:05,905 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 512 transitions. Word has length 88 [2021-10-13 00:10:05,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:10:05,905 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 512 transitions. [2021-10-13 00:10:05,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 5.5) internal successors, (88), 16 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:05,906 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 512 transitions. [2021-10-13 00:10:05,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-13 00:10:05,908 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:10:05,908 INFO L512 BasicCegarLoop]: trace histogram [15, 14, 14, 11, 11, 11, 4, 4, 4, 1, 1] [2021-10-13 00:10:05,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-10-13 00:10:06,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:10:06,129 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:10:06,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:10:06,129 INFO L82 PathProgramCache]: Analyzing trace with hash 289561722, now seen corresponding path program 7 times [2021-10-13 00:10:06,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:10:06,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572259770] [2021-10-13 00:10:06,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:10:06,130 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:10:06,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:10:06,280 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 149 proven. 352 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-13 00:10:06,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:10:06,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572259770] [2021-10-13 00:10:06,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572259770] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:10:06,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784202170] [2021-10-13 00:10:06,281 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 00:10:06,281 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:10:06,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:10:06,289 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:10:06,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-13 00:10:06,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:10:06,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 00:10:06,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:10:07,018 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 149 proven. 352 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-13 00:10:07,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784202170] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:10:07,018 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:10:07,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2021-10-13 00:10:07,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893979316] [2021-10-13 00:10:07,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 00:10:07,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:10:07,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 00:10:07,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-10-13 00:10:07,021 INFO L87 Difference]: Start difference. First operand 444 states and 512 transitions. Second operand has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 13 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:07,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:10:07,086 INFO L93 Difference]: Finished difference Result 835 states and 972 transitions. [2021-10-13 00:10:07,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 00:10:07,087 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 13 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-10-13 00:10:07,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:10:07,090 INFO L225 Difference]: With dead ends: 835 [2021-10-13 00:10:07,090 INFO L226 Difference]: Without dead ends: 454 [2021-10-13 00:10:07,091 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 83.2ms TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-10-13 00:10:07,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2021-10-13 00:10:07,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 450. [2021-10-13 00:10:07,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 448 states have (on average 1.15625) internal successors, (518), 449 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:07,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 518 transitions. [2021-10-13 00:10:07,110 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 518 transitions. Word has length 90 [2021-10-13 00:10:07,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:10:07,111 INFO L470 AbstractCegarLoop]: Abstraction has 450 states and 518 transitions. [2021-10-13 00:10:07,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 13 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:07,111 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 518 transitions. [2021-10-13 00:10:07,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-10-13 00:10:07,112 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:10:07,113 INFO L512 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 1, 1] [2021-10-13 00:10:07,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-13 00:10:07,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-10-13 00:10:07,337 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:10:07,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:10:07,337 INFO L82 PathProgramCache]: Analyzing trace with hash 146181026, now seen corresponding path program 14 times [2021-10-13 00:10:07,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:10:07,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421500973] [2021-10-13 00:10:07,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:10:07,338 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:10:07,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:10:07,553 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 0 proven. 675 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:07,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:10:07,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421500973] [2021-10-13 00:10:07,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421500973] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:10:07,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624357215] [2021-10-13 00:10:07,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:10:07,556 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:10:07,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:10:07,556 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:10:07,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-13 00:10:07,972 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:10:07,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:10:07,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 00:10:07,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:10:08,277 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 0 proven. 675 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:08,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624357215] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:10:08,278 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:10:08,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2021-10-13 00:10:08,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341922813] [2021-10-13 00:10:08,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 00:10:08,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:10:08,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 00:10:08,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-10-13 00:10:08,281 INFO L87 Difference]: Start difference. First operand 450 states and 518 transitions. Second operand has 18 states, 17 states have (on average 5.529411764705882) internal successors, (94), 17 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:08,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:10:08,471 INFO L93 Difference]: Finished difference Result 869 states and 1008 transitions. [2021-10-13 00:10:08,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 00:10:08,472 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 5.529411764705882) internal successors, (94), 17 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-10-13 00:10:08,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:10:08,478 INFO L225 Difference]: With dead ends: 869 [2021-10-13 00:10:08,479 INFO L226 Difference]: Without dead ends: 868 [2021-10-13 00:10:08,479 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 139.9ms TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-10-13 00:10:08,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2021-10-13 00:10:08,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 477. [2021-10-13 00:10:08,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 475 states have (on average 1.1578947368421053) internal successors, (550), 476 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:08,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 550 transitions. [2021-10-13 00:10:08,508 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 550 transitions. Word has length 94 [2021-10-13 00:10:08,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:10:08,508 INFO L470 AbstractCegarLoop]: Abstraction has 477 states and 550 transitions. [2021-10-13 00:10:08,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 5.529411764705882) internal successors, (94), 17 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:08,509 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 550 transitions. [2021-10-13 00:10:08,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-10-13 00:10:08,510 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:10:08,510 INFO L512 BasicCegarLoop]: trace histogram [16, 15, 15, 12, 12, 12, 4, 4, 4, 1, 1] [2021-10-13 00:10:08,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-10-13 00:10:08,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-10-13 00:10:08,737 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:10:08,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:10:08,737 INFO L82 PathProgramCache]: Analyzing trace with hash -400236045, now seen corresponding path program 8 times [2021-10-13 00:10:08,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:10:08,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152275925] [2021-10-13 00:10:08,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:10:08,738 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:10:08,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:10:08,928 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 162 proven. 420 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-13 00:10:08,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:10:08,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152275925] [2021-10-13 00:10:08,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152275925] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:10:08,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094045653] [2021-10-13 00:10:08,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:10:08,929 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:10:08,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:10:08,931 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:10:08,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-13 00:10:09,559 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:10:09,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:10:09,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 00:10:09,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:10:09,937 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 162 proven. 420 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-13 00:10:09,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094045653] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:10:09,938 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:10:09,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2021-10-13 00:10:09,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432593202] [2021-10-13 00:10:09,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 00:10:09,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:10:09,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 00:10:09,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-10-13 00:10:09,941 INFO L87 Difference]: Start difference. First operand 477 states and 550 transitions. Second operand has 15 states, 15 states have (on average 5.466666666666667) internal successors, (82), 14 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:10,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:10:10,029 INFO L93 Difference]: Finished difference Result 895 states and 1042 transitions. [2021-10-13 00:10:10,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 00:10:10,029 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.466666666666667) internal successors, (82), 14 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-10-13 00:10:10,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:10:10,034 INFO L225 Difference]: With dead ends: 895 [2021-10-13 00:10:10,035 INFO L226 Difference]: Without dead ends: 487 [2021-10-13 00:10:10,036 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 109.4ms TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-10-13 00:10:10,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2021-10-13 00:10:10,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 483. [2021-10-13 00:10:10,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 481 states have (on average 1.155925155925156) internal successors, (556), 482 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:10,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 556 transitions. [2021-10-13 00:10:10,058 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 556 transitions. Word has length 96 [2021-10-13 00:10:10,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:10:10,059 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 556 transitions. [2021-10-13 00:10:10,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.466666666666667) internal successors, (82), 14 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:10,059 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 556 transitions. [2021-10-13 00:10:10,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-13 00:10:10,061 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:10:10,061 INFO L512 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 1, 1] [2021-10-13 00:10:10,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-10-13 00:10:10,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-10-13 00:10:10,289 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:10:10,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:10:10,289 INFO L82 PathProgramCache]: Analyzing trace with hash -143151973, now seen corresponding path program 15 times [2021-10-13 00:10:10,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:10:10,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424431433] [2021-10-13 00:10:10,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:10:10,290 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:10:10,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:10:10,574 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 0 proven. 768 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:10,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:10:10,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424431433] [2021-10-13 00:10:10,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424431433] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:10:10,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929003832] [2021-10-13 00:10:10,575 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:10:10,575 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:10:10,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:10:10,577 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:10:10,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-10-13 00:10:11,278 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2021-10-13 00:10:11,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:10:11,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 00:10:11,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:10:11,672 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 0 proven. 768 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:11,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929003832] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:10:11,673 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:10:11,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2021-10-13 00:10:11,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572024176] [2021-10-13 00:10:11,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 00:10:11,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:10:11,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 00:10:11,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-10-13 00:10:11,676 INFO L87 Difference]: Start difference. First operand 483 states and 556 transitions. Second operand has 19 states, 18 states have (on average 5.555555555555555) internal successors, (100), 18 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:11,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:10:11,858 INFO L93 Difference]: Finished difference Result 931 states and 1080 transitions. [2021-10-13 00:10:11,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 00:10:11,859 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 5.555555555555555) internal successors, (100), 18 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-10-13 00:10:11,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:10:11,864 INFO L225 Difference]: With dead ends: 931 [2021-10-13 00:10:11,865 INFO L226 Difference]: Without dead ends: 930 [2021-10-13 00:10:11,867 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 178.6ms TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-10-13 00:10:11,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2021-10-13 00:10:11,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 510. [2021-10-13 00:10:11,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 508 states have (on average 1.1574803149606299) internal successors, (588), 509 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:11,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 588 transitions. [2021-10-13 00:10:11,896 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 588 transitions. Word has length 100 [2021-10-13 00:10:11,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:10:11,897 INFO L470 AbstractCegarLoop]: Abstraction has 510 states and 588 transitions. [2021-10-13 00:10:11,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 5.555555555555555) internal successors, (100), 18 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:11,900 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 588 transitions. [2021-10-13 00:10:11,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-10-13 00:10:11,901 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:10:11,902 INFO L512 BasicCegarLoop]: trace histogram [17, 16, 16, 13, 13, 13, 4, 4, 4, 1, 1] [2021-10-13 00:10:11,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-10-13 00:10:12,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-10-13 00:10:12,118 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:10:12,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:10:12,118 INFO L82 PathProgramCache]: Analyzing trace with hash 723626156, now seen corresponding path program 9 times [2021-10-13 00:10:12,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:10:12,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718675830] [2021-10-13 00:10:12,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:10:12,119 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:10:12,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:10:12,330 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 175 proven. 494 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-13 00:10:12,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:10:12,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718675830] [2021-10-13 00:10:12,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718675830] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:10:12,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415294874] [2021-10-13 00:10:12,332 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:10:12,332 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:10:12,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:10:12,337 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:10:12,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-13 00:10:13,112 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-13 00:10:13,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:10:13,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 00:10:13,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:10:13,467 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 285 proven. 59 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2021-10-13 00:10:13,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415294874] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:10:13,468 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:10:13,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 7] total 22 [2021-10-13 00:10:13,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875668647] [2021-10-13 00:10:13,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 00:10:13,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:10:13,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 00:10:13,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-10-13 00:10:13,471 INFO L87 Difference]: Start difference. First operand 510 states and 588 transitions. Second operand has 22 states, 22 states have (on average 5.863636363636363) internal successors, (129), 22 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:13,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:10:13,613 INFO L93 Difference]: Finished difference Result 1125 states and 1335 transitions. [2021-10-13 00:10:13,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 00:10:13,613 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.863636363636363) internal successors, (129), 22 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2021-10-13 00:10:13,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:10:13,618 INFO L225 Difference]: With dead ends: 1125 [2021-10-13 00:10:13,619 INFO L226 Difference]: Without dead ends: 690 [2021-10-13 00:10:13,620 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 194.3ms TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-10-13 00:10:13,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2021-10-13 00:10:13,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 678. [2021-10-13 00:10:13,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 676 states have (on average 1.1553254437869822) internal successors, (781), 677 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:13,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 781 transitions. [2021-10-13 00:10:13,650 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 781 transitions. Word has length 102 [2021-10-13 00:10:13,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:10:13,650 INFO L470 AbstractCegarLoop]: Abstraction has 678 states and 781 transitions. [2021-10-13 00:10:13,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.863636363636363) internal successors, (129), 22 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:13,651 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 781 transitions. [2021-10-13 00:10:13,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-10-13 00:10:13,652 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:10:13,652 INFO L512 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 1, 1] [2021-10-13 00:10:13,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-10-13 00:10:13,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:10:13,869 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:10:13,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:10:13,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1288728276, now seen corresponding path program 16 times [2021-10-13 00:10:13,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:10:13,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013909108] [2021-10-13 00:10:13,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:10:13,870 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:10:13,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:10:14,184 INFO L134 CoverageAnalysis]: Checked inductivity of 867 backedges. 0 proven. 867 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:14,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:10:14,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013909108] [2021-10-13 00:10:14,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013909108] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:10:14,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668696259] [2021-10-13 00:10:14,185 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 00:10:14,185 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:10:14,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:10:14,187 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:10:14,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-10-13 00:10:14,891 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 00:10:14,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:10:14,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 00:10:14,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:10:15,302 INFO L134 CoverageAnalysis]: Checked inductivity of 867 backedges. 0 proven. 867 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:15,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668696259] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:10:15,302 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:10:15,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2021-10-13 00:10:15,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317696349] [2021-10-13 00:10:15,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 00:10:15,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:10:15,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 00:10:15,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2021-10-13 00:10:15,305 INFO L87 Difference]: Start difference. First operand 678 states and 781 transitions. Second operand has 20 states, 19 states have (on average 5.578947368421052) internal successors, (106), 19 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:15,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:10:15,518 INFO L93 Difference]: Finished difference Result 1317 states and 1528 transitions. [2021-10-13 00:10:15,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 00:10:15,519 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 5.578947368421052) internal successors, (106), 19 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-10-13 00:10:15,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:10:15,528 INFO L225 Difference]: With dead ends: 1317 [2021-10-13 00:10:15,529 INFO L226 Difference]: Without dead ends: 1316 [2021-10-13 00:10:15,530 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 223.3ms TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2021-10-13 00:10:15,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1316 states. [2021-10-13 00:10:15,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1316 to 717. [2021-10-13 00:10:15,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 715 states have (on average 1.1566433566433567) internal successors, (827), 716 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:15,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 827 transitions. [2021-10-13 00:10:15,572 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 827 transitions. Word has length 106 [2021-10-13 00:10:15,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:10:15,573 INFO L470 AbstractCegarLoop]: Abstraction has 717 states and 827 transitions. [2021-10-13 00:10:15,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 5.578947368421052) internal successors, (106), 19 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:15,573 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 827 transitions. [2021-10-13 00:10:15,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-10-13 00:10:15,575 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:10:15,575 INFO L512 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 1, 1] [2021-10-13 00:10:15,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-10-13 00:10:15,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-10-13 00:10:15,789 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:10:15,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:10:15,789 INFO L82 PathProgramCache]: Analyzing trace with hash -2142051763, now seen corresponding path program 17 times [2021-10-13 00:10:15,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:10:15,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242032046] [2021-10-13 00:10:15,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:10:15,790 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:10:15,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:10:16,109 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 0 proven. 972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:16,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:10:16,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242032046] [2021-10-13 00:10:16,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242032046] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:10:16,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763625130] [2021-10-13 00:10:16,110 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 00:10:16,110 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:10:16,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:10:16,116 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:10:16,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-10-13 00:10:16,804 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2021-10-13 00:10:16,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:10:16,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 00:10:16,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:10:17,189 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 0 proven. 972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:17,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763625130] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:10:17,190 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:10:17,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-10-13 00:10:17,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32383084] [2021-10-13 00:10:17,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 00:10:17,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:10:17,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 00:10:17,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-10-13 00:10:17,192 INFO L87 Difference]: Start difference. First operand 717 states and 827 transitions. Second operand has 21 states, 20 states have (on average 5.6) internal successors, (112), 20 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:17,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:10:17,418 INFO L93 Difference]: Finished difference Result 1397 states and 1622 transitions. [2021-10-13 00:10:17,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 00:10:17,419 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 5.6) internal successors, (112), 20 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-10-13 00:10:17,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:10:17,428 INFO L225 Difference]: With dead ends: 1397 [2021-10-13 00:10:17,428 INFO L226 Difference]: Without dead ends: 1396 [2021-10-13 00:10:17,429 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 201.0ms TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-10-13 00:10:17,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1396 states. [2021-10-13 00:10:17,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1396 to 756. [2021-10-13 00:10:17,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 754 states have (on average 1.1578249336870026) internal successors, (873), 755 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:17,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 873 transitions. [2021-10-13 00:10:17,488 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 873 transitions. Word has length 112 [2021-10-13 00:10:17,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:10:17,488 INFO L470 AbstractCegarLoop]: Abstraction has 756 states and 873 transitions. [2021-10-13 00:10:17,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 5.6) internal successors, (112), 20 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:17,489 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 873 transitions. [2021-10-13 00:10:17,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-10-13 00:10:17,490 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:10:17,491 INFO L512 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 1, 1] [2021-10-13 00:10:17,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-10-13 00:10:17,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-10-13 00:10:17,705 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:10:17,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:10:17,705 INFO L82 PathProgramCache]: Analyzing trace with hash -138078458, now seen corresponding path program 18 times [2021-10-13 00:10:17,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:10:17,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289540254] [2021-10-13 00:10:17,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:10:17,706 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:10:17,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:10:17,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 0 proven. 1083 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:17,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:10:17,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289540254] [2021-10-13 00:10:17,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289540254] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:10:17,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082078482] [2021-10-13 00:10:17,989 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 00:10:17,989 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:10:17,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:10:17,990 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:10:17,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-10-13 00:10:18,636 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2021-10-13 00:10:18,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:10:18,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 00:10:18,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:10:19,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 0 proven. 1083 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:19,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082078482] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:10:19,054 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:10:19,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2021-10-13 00:10:19,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877727111] [2021-10-13 00:10:19,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 00:10:19,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:10:19,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 00:10:19,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-10-13 00:10:19,057 INFO L87 Difference]: Start difference. First operand 756 states and 873 transitions. Second operand has 22 states, 21 states have (on average 5.619047619047619) internal successors, (118), 21 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:19,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:10:19,266 INFO L93 Difference]: Finished difference Result 1477 states and 1716 transitions. [2021-10-13 00:10:19,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 00:10:19,267 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 5.619047619047619) internal successors, (118), 21 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-10-13 00:10:19,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:10:19,275 INFO L225 Difference]: With dead ends: 1477 [2021-10-13 00:10:19,275 INFO L226 Difference]: Without dead ends: 1476 [2021-10-13 00:10:19,277 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 200.2ms TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-10-13 00:10:19,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2021-10-13 00:10:19,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 795. [2021-10-13 00:10:19,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 793 states have (on average 1.158890290037831) internal successors, (919), 794 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:19,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 919 transitions. [2021-10-13 00:10:19,313 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 919 transitions. Word has length 118 [2021-10-13 00:10:19,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:10:19,313 INFO L470 AbstractCegarLoop]: Abstraction has 795 states and 919 transitions. [2021-10-13 00:10:19,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 5.619047619047619) internal successors, (118), 21 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:19,314 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 919 transitions. [2021-10-13 00:10:19,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-10-13 00:10:19,316 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:10:19,316 INFO L512 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 1, 1] [2021-10-13 00:10:19,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-10-13 00:10:19,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:10:19,537 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:10:19,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:10:19,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1876878081, now seen corresponding path program 19 times [2021-10-13 00:10:19,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:10:19,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227253709] [2021-10-13 00:10:19,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:10:19,538 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:10:19,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:10:19,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 1200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:19,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:10:19,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227253709] [2021-10-13 00:10:19,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227253709] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:10:19,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761248795] [2021-10-13 00:10:19,867 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 00:10:19,868 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:10:19,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:10:19,873 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:10:19,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-10-13 00:10:20,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:10:20,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 00:10:20,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:10:21,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 1200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:21,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761248795] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:10:21,375 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:10:21,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2021-10-13 00:10:21,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176141997] [2021-10-13 00:10:21,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 00:10:21,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:10:21,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 00:10:21,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2021-10-13 00:10:21,377 INFO L87 Difference]: Start difference. First operand 795 states and 919 transitions. Second operand has 23 states, 22 states have (on average 5.636363636363637) internal successors, (124), 22 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:21,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:10:21,614 INFO L93 Difference]: Finished difference Result 1557 states and 1810 transitions. [2021-10-13 00:10:21,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 00:10:21,615 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 5.636363636363637) internal successors, (124), 22 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-10-13 00:10:21,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:10:21,625 INFO L225 Difference]: With dead ends: 1557 [2021-10-13 00:10:21,625 INFO L226 Difference]: Without dead ends: 1556 [2021-10-13 00:10:21,626 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 232.2ms TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2021-10-13 00:10:21,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2021-10-13 00:10:21,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 834. [2021-10-13 00:10:21,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 832 states have (on average 1.1598557692307692) internal successors, (965), 833 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:21,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 965 transitions. [2021-10-13 00:10:21,670 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 965 transitions. Word has length 124 [2021-10-13 00:10:21,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:10:21,671 INFO L470 AbstractCegarLoop]: Abstraction has 834 states and 965 transitions. [2021-10-13 00:10:21,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 5.636363636363637) internal successors, (124), 22 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:21,671 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 965 transitions. [2021-10-13 00:10:21,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-10-13 00:10:21,674 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:10:21,674 INFO L512 BasicCegarLoop]: trace histogram [21, 20, 20, 15, 15, 15, 6, 6, 6, 1, 1] [2021-10-13 00:10:21,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-10-13 00:10:21,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-10-13 00:10:21,892 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:10:21,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:10:21,892 INFO L82 PathProgramCache]: Analyzing trace with hash -637299836, now seen corresponding path program 10 times [2021-10-13 00:10:21,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:10:21,893 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931136071] [2021-10-13 00:10:21,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:10:21,893 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:10:21,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:10:22,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1060 backedges. 325 proven. 660 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-10-13 00:10:22,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:10:22,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931136071] [2021-10-13 00:10:22,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931136071] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:10:22,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029553175] [2021-10-13 00:10:22,162 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 00:10:22,162 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:10:22,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:10:22,164 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:10:22,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-10-13 00:10:23,172 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 00:10:23,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:10:23,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 00:10:23,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:10:23,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1060 backedges. 325 proven. 660 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-10-13 00:10:23,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029553175] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:10:23,564 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:10:23,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2021-10-13 00:10:23,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449451854] [2021-10-13 00:10:23,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 00:10:23,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:10:23,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 00:10:23,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-10-13 00:10:23,566 INFO L87 Difference]: Start difference. First operand 834 states and 965 transitions. Second operand has 18 states, 18 states have (on average 5.555555555555555) internal successors, (100), 17 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:23,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:10:23,654 INFO L93 Difference]: Finished difference Result 1591 states and 1854 transitions. [2021-10-13 00:10:23,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 00:10:23,655 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.555555555555555) internal successors, (100), 17 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2021-10-13 00:10:23,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:10:23,660 INFO L225 Difference]: With dead ends: 1591 [2021-10-13 00:10:23,661 INFO L226 Difference]: Without dead ends: 844 [2021-10-13 00:10:23,662 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 184.9ms TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-10-13 00:10:23,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2021-10-13 00:10:23,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 840. [2021-10-13 00:10:23,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 838 states have (on average 1.1587112171837708) internal successors, (971), 839 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:23,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 971 transitions. [2021-10-13 00:10:23,693 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 971 transitions. Word has length 126 [2021-10-13 00:10:23,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:10:23,694 INFO L470 AbstractCegarLoop]: Abstraction has 840 states and 971 transitions. [2021-10-13 00:10:23,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.555555555555555) internal successors, (100), 17 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:23,694 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 971 transitions. [2021-10-13 00:10:23,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-10-13 00:10:23,696 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:10:23,696 INFO L512 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 1, 1] [2021-10-13 00:10:23,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-10-13 00:10:23,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-10-13 00:10:23,913 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:10:23,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:10:23,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1721041976, now seen corresponding path program 20 times [2021-10-13 00:10:23,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:10:23,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420835817] [2021-10-13 00:10:23,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:10:23,914 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:10:23,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:10:24,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1323 backedges. 0 proven. 1323 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:24,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:10:24,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420835817] [2021-10-13 00:10:24,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420835817] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:10:24,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967511157] [2021-10-13 00:10:24,308 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:10:24,308 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:10:24,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:10:24,313 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:10:24,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-10-13 00:10:25,399 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:10:25,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:10:25,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 00:10:25,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:10:25,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1323 backedges. 0 proven. 1323 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:25,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967511157] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:10:25,821 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:10:25,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-10-13 00:10:25,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102303981] [2021-10-13 00:10:25,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 00:10:25,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:10:25,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 00:10:25,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-10-13 00:10:25,823 INFO L87 Difference]: Start difference. First operand 840 states and 971 transitions. Second operand has 24 states, 23 states have (on average 5.6521739130434785) internal successors, (130), 23 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:26,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:10:26,045 INFO L93 Difference]: Finished difference Result 1643 states and 1910 transitions. [2021-10-13 00:10:26,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 00:10:26,046 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.6521739130434785) internal successors, (130), 23 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-10-13 00:10:26,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:10:26,054 INFO L225 Difference]: With dead ends: 1643 [2021-10-13 00:10:26,054 INFO L226 Difference]: Without dead ends: 1642 [2021-10-13 00:10:26,055 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 271.3ms TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-10-13 00:10:26,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2021-10-13 00:10:26,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 879. [2021-10-13 00:10:26,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 877 states have (on average 1.1596351197263397) internal successors, (1017), 878 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:26,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1017 transitions. [2021-10-13 00:10:26,090 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1017 transitions. Word has length 130 [2021-10-13 00:10:26,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:10:26,091 INFO L470 AbstractCegarLoop]: Abstraction has 879 states and 1017 transitions. [2021-10-13 00:10:26,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.6521739130434785) internal successors, (130), 23 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:26,092 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1017 transitions. [2021-10-13 00:10:26,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-10-13 00:10:26,093 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:10:26,094 INFO L512 BasicCegarLoop]: trace histogram [22, 21, 21, 16, 16, 16, 6, 6, 6, 1, 1] [2021-10-13 00:10:26,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-10-13 00:10:26,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-10-13 00:10:26,309 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:10:26,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:10:26,309 INFO L82 PathProgramCache]: Analyzing trace with hash -484798339, now seen corresponding path program 11 times [2021-10-13 00:10:26,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:10:26,310 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690019571] [2021-10-13 00:10:26,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:10:26,310 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:10:26,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:10:26,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 346 proven. 752 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-10-13 00:10:26,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:10:26,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690019571] [2021-10-13 00:10:26,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690019571] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:10:26,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254222460] [2021-10-13 00:10:26,559 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 00:10:26,559 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:10:26,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:10:26,561 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:10:26,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-10-13 00:10:27,734 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-10-13 00:10:27,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:10:27,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 00:10:27,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:10:28,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 346 proven. 752 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-10-13 00:10:28,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254222460] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:10:28,213 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:10:28,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2021-10-13 00:10:28,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775469492] [2021-10-13 00:10:28,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 00:10:28,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:10:28,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 00:10:28,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-10-13 00:10:28,215 INFO L87 Difference]: Start difference. First operand 879 states and 1017 transitions. Second operand has 19 states, 19 states have (on average 5.578947368421052) internal successors, (106), 18 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:28,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:10:28,329 INFO L93 Difference]: Finished difference Result 1675 states and 1952 transitions. [2021-10-13 00:10:28,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 00:10:28,330 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.578947368421052) internal successors, (106), 18 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-10-13 00:10:28,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:10:28,336 INFO L225 Difference]: With dead ends: 1675 [2021-10-13 00:10:28,336 INFO L226 Difference]: Without dead ends: 889 [2021-10-13 00:10:28,338 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 164.5ms TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-10-13 00:10:28,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2021-10-13 00:10:28,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 885. [2021-10-13 00:10:28,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 883 states have (on average 1.1585503963759909) internal successors, (1023), 884 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:28,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1023 transitions. [2021-10-13 00:10:28,374 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1023 transitions. Word has length 132 [2021-10-13 00:10:28,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:10:28,375 INFO L470 AbstractCegarLoop]: Abstraction has 885 states and 1023 transitions. [2021-10-13 00:10:28,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.578947368421052) internal successors, (106), 18 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:28,376 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1023 transitions. [2021-10-13 00:10:28,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-10-13 00:10:28,377 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:10:28,377 INFO L512 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 1, 1] [2021-10-13 00:10:28,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-10-13 00:10:28,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-10-13 00:10:28,601 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:10:28,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:10:28,601 INFO L82 PathProgramCache]: Analyzing trace with hash -511517519, now seen corresponding path program 21 times [2021-10-13 00:10:28,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:10:28,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211437019] [2021-10-13 00:10:28,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:10:28,602 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:10:28,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:10:28,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:28,993 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:10:28,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211437019] [2021-10-13 00:10:28,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211437019] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:10:28,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185384125] [2021-10-13 00:10:28,994 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:10:28,994 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:10:28,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:10:28,995 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:10:29,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-10-13 00:10:29,921 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2021-10-13 00:10:29,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:10:29,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 00:10:29,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:10:30,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:30,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185384125] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:10:30,353 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:10:30,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2021-10-13 00:10:30,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213587623] [2021-10-13 00:10:30,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 00:10:30,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:10:30,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 00:10:30,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-10-13 00:10:30,356 INFO L87 Difference]: Start difference. First operand 885 states and 1023 transitions. Second operand has 25 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:30,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:10:30,575 INFO L93 Difference]: Finished difference Result 1729 states and 2010 transitions. [2021-10-13 00:10:30,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 00:10:30,576 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2021-10-13 00:10:30,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:10:30,587 INFO L225 Difference]: With dead ends: 1729 [2021-10-13 00:10:30,587 INFO L226 Difference]: Without dead ends: 1728 [2021-10-13 00:10:30,588 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 297.2ms TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-10-13 00:10:30,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1728 states. [2021-10-13 00:10:30,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1728 to 924. [2021-10-13 00:10:30,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 924 states, 922 states have (on average 1.1594360086767896) internal successors, (1069), 923 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:30,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1069 transitions. [2021-10-13 00:10:30,627 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1069 transitions. Word has length 136 [2021-10-13 00:10:30,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:10:30,627 INFO L470 AbstractCegarLoop]: Abstraction has 924 states and 1069 transitions. [2021-10-13 00:10:30,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:30,628 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1069 transitions. [2021-10-13 00:10:30,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-10-13 00:10:30,630 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:10:30,630 INFO L512 BasicCegarLoop]: trace histogram [23, 22, 22, 17, 17, 17, 6, 6, 6, 1, 1] [2021-10-13 00:10:30,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-10-13 00:10:30,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:10:30,857 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:10:30,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:10:30,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1509174966, now seen corresponding path program 12 times [2021-10-13 00:10:30,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:10:30,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76270384] [2021-10-13 00:10:30,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:10:30,858 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:10:30,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:10:31,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1292 backedges. 367 proven. 850 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-10-13 00:10:31,134 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:10:31,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76270384] [2021-10-13 00:10:31,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76270384] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:10:31,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885137075] [2021-10-13 00:10:31,134 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 00:10:31,135 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:10:31,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:10:31,137 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:10:31,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-10-13 00:10:32,182 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-10-13 00:10:32,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:10:32,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 00:10:32,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:10:32,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1292 backedges. 509 proven. 123 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2021-10-13 00:10:32,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885137075] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:10:32,698 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:10:32,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 9] total 28 [2021-10-13 00:10:32,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553655480] [2021-10-13 00:10:32,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-13 00:10:32,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:10:32,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-13 00:10:32,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2021-10-13 00:10:32,701 INFO L87 Difference]: Start difference. First operand 924 states and 1069 transitions. Second operand has 28 states, 28 states have (on average 5.892857142857143) internal successors, (165), 28 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:32,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:10:32,871 INFO L93 Difference]: Finished difference Result 1981 states and 2341 transitions. [2021-10-13 00:10:32,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 00:10:32,872 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.892857142857143) internal successors, (165), 28 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2021-10-13 00:10:32,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:10:32,880 INFO L225 Difference]: With dead ends: 1981 [2021-10-13 00:10:32,880 INFO L226 Difference]: Without dead ends: 1156 [2021-10-13 00:10:32,882 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 347.7ms TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2021-10-13 00:10:32,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2021-10-13 00:10:32,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 1140. [2021-10-13 00:10:32,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1140 states, 1138 states have (on average 1.1581722319859402) internal successors, (1318), 1139 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:32,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 1318 transitions. [2021-10-13 00:10:32,918 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 1318 transitions. Word has length 138 [2021-10-13 00:10:32,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:10:32,919 INFO L470 AbstractCegarLoop]: Abstraction has 1140 states and 1318 transitions. [2021-10-13 00:10:32,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.892857142857143) internal successors, (165), 28 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:32,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 1318 transitions. [2021-10-13 00:10:32,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-10-13 00:10:32,921 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:10:32,921 INFO L512 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 1, 1] [2021-10-13 00:10:32,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-10-13 00:10:33,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-10-13 00:10:33,149 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:10:33,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:10:33,149 INFO L82 PathProgramCache]: Analyzing trace with hash -109005206, now seen corresponding path program 22 times [2021-10-13 00:10:33,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:10:33,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628466138] [2021-10-13 00:10:33,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:10:33,150 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:10:33,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:10:33,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1587 backedges. 0 proven. 1587 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:33,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:10:33,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628466138] [2021-10-13 00:10:33,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628466138] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:10:33,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230105350] [2021-10-13 00:10:33,547 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 00:10:33,547 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:10:33,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:10:33,548 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:10:33,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-10-13 00:10:34,562 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 00:10:34,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:10:34,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 00:10:34,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:10:34,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1587 backedges. 0 proven. 1587 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:34,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230105350] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:10:34,998 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:10:34,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2021-10-13 00:10:34,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781166109] [2021-10-13 00:10:34,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 00:10:35,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:10:35,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 00:10:35,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2021-10-13 00:10:35,001 INFO L87 Difference]: Start difference. First operand 1140 states and 1318 transitions. Second operand has 26 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:35,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:10:35,225 INFO L93 Difference]: Finished difference Result 2235 states and 2598 transitions. [2021-10-13 00:10:35,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 00:10:35,225 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2021-10-13 00:10:35,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:10:35,235 INFO L225 Difference]: With dead ends: 2235 [2021-10-13 00:10:35,235 INFO L226 Difference]: Without dead ends: 2234 [2021-10-13 00:10:35,236 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 302.5ms TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2021-10-13 00:10:35,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2234 states. [2021-10-13 00:10:35,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2234 to 1191. [2021-10-13 00:10:35,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 1189 states have (on average 1.1589571068124473) internal successors, (1378), 1190 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:35,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 1378 transitions. [2021-10-13 00:10:35,290 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 1378 transitions. Word has length 142 [2021-10-13 00:10:35,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:10:35,290 INFO L470 AbstractCegarLoop]: Abstraction has 1191 states and 1378 transitions. [2021-10-13 00:10:35,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:35,291 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 1378 transitions. [2021-10-13 00:10:35,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-10-13 00:10:35,292 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:10:35,293 INFO L512 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 1, 1] [2021-10-13 00:10:35,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-10-13 00:10:35,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-10-13 00:10:35,517 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:10:35,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:10:35,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1034378909, now seen corresponding path program 23 times [2021-10-13 00:10:35,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:10:35,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259262621] [2021-10-13 00:10:35,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:10:35,518 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:10:35,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:10:35,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1728 backedges. 0 proven. 1728 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:35,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:10:35,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259262621] [2021-10-13 00:10:35,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259262621] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:10:35,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378066220] [2021-10-13 00:10:35,964 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 00:10:35,964 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:10:35,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:10:35,969 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:10:35,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-10-13 00:10:37,187 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2021-10-13 00:10:37,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:10:37,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-13 00:10:37,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:10:37,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1728 backedges. 0 proven. 1728 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:37,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378066220] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:10:37,698 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:10:37,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-10-13 00:10:37,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898753200] [2021-10-13 00:10:37,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-13 00:10:37,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:10:37,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-13 00:10:37,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2021-10-13 00:10:37,700 INFO L87 Difference]: Start difference. First operand 1191 states and 1378 transitions. Second operand has 27 states, 26 states have (on average 5.6923076923076925) internal successors, (148), 26 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:37,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:10:38,000 INFO L93 Difference]: Finished difference Result 2339 states and 2720 transitions. [2021-10-13 00:10:38,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 00:10:38,001 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 5.6923076923076925) internal successors, (148), 26 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2021-10-13 00:10:38,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:10:38,039 INFO L225 Difference]: With dead ends: 2339 [2021-10-13 00:10:38,052 INFO L226 Difference]: Without dead ends: 2338 [2021-10-13 00:10:38,073 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 338.8ms TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2021-10-13 00:10:38,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2338 states. [2021-10-13 00:10:38,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2338 to 1242. [2021-10-13 00:10:38,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1242 states, 1240 states have (on average 1.1596774193548387) internal successors, (1438), 1241 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:38,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1242 states to 1242 states and 1438 transitions. [2021-10-13 00:10:38,196 INFO L78 Accepts]: Start accepts. Automaton has 1242 states and 1438 transitions. Word has length 148 [2021-10-13 00:10:38,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:10:38,197 INFO L470 AbstractCegarLoop]: Abstraction has 1242 states and 1438 transitions. [2021-10-13 00:10:38,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 5.6923076923076925) internal successors, (148), 26 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:38,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1242 states and 1438 transitions. [2021-10-13 00:10:38,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-10-13 00:10:38,199 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:10:38,200 INFO L512 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 1, 1] [2021-10-13 00:10:38,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-10-13 00:10:38,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2021-10-13 00:10:38,425 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:10:38,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:10:38,425 INFO L82 PathProgramCache]: Analyzing trace with hash 872983964, now seen corresponding path program 24 times [2021-10-13 00:10:38,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:10:38,426 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723704848] [2021-10-13 00:10:38,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:10:38,426 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:10:38,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:10:38,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1875 backedges. 0 proven. 1875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:38,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:10:38,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723704848] [2021-10-13 00:10:38,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723704848] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:10:38,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326102046] [2021-10-13 00:10:38,922 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 00:10:38,923 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:10:38,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:10:38,924 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:10:38,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-10-13 00:10:40,170 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s) [2021-10-13 00:10:40,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:10:40,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-13 00:10:40,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:10:40,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1875 backedges. 0 proven. 1875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:40,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326102046] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:10:40,641 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:10:40,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2021-10-13 00:10:40,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922981301] [2021-10-13 00:10:40,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-13 00:10:40,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:10:40,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-13 00:10:40,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2021-10-13 00:10:40,644 INFO L87 Difference]: Start difference. First operand 1242 states and 1438 transitions. Second operand has 28 states, 27 states have (on average 5.703703703703703) internal successors, (154), 27 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:40,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:10:40,885 INFO L93 Difference]: Finished difference Result 2443 states and 2842 transitions. [2021-10-13 00:10:40,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 00:10:40,886 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 5.703703703703703) internal successors, (154), 27 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2021-10-13 00:10:40,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:10:40,899 INFO L225 Difference]: With dead ends: 2443 [2021-10-13 00:10:40,900 INFO L226 Difference]: Without dead ends: 2442 [2021-10-13 00:10:40,901 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 378.5ms TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2021-10-13 00:10:40,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2442 states. [2021-10-13 00:10:40,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2442 to 1293. [2021-10-13 00:10:40,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1293 states, 1291 states have (on average 1.1603408210689388) internal successors, (1498), 1292 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:40,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 1498 transitions. [2021-10-13 00:10:40,935 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 1498 transitions. Word has length 154 [2021-10-13 00:10:40,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:10:40,936 INFO L470 AbstractCegarLoop]: Abstraction has 1293 states and 1498 transitions. [2021-10-13 00:10:40,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 5.703703703703703) internal successors, (154), 27 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:40,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 1498 transitions. [2021-10-13 00:10:40,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-10-13 00:10:40,939 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:10:40,939 INFO L512 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 26, 26, 1, 1] [2021-10-13 00:10:40,979 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2021-10-13 00:10:41,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:10:41,153 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:10:41,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:10:41,153 INFO L82 PathProgramCache]: Analyzing trace with hash 868412181, now seen corresponding path program 25 times [2021-10-13 00:10:41,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:10:41,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468752953] [2021-10-13 00:10:41,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:10:41,154 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:10:41,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:10:41,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 0 proven. 2028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:41,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:10:41,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468752953] [2021-10-13 00:10:41,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468752953] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:10:41,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261437193] [2021-10-13 00:10:41,688 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 00:10:41,689 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:10:41,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:10:41,690 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:10:41,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-10-13 00:10:42,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:10:42,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-13 00:10:42,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:10:43,426 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 0 proven. 2028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:43,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261437193] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:10:43,427 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:10:43,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2021-10-13 00:10:43,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596197052] [2021-10-13 00:10:43,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-10-13 00:10:43,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:10:43,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-10-13 00:10:43,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2021-10-13 00:10:43,437 INFO L87 Difference]: Start difference. First operand 1293 states and 1498 transitions. Second operand has 29 states, 28 states have (on average 5.714285714285714) internal successors, (160), 28 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:43,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:10:43,716 INFO L93 Difference]: Finished difference Result 2547 states and 2964 transitions. [2021-10-13 00:10:43,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-13 00:10:43,716 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 5.714285714285714) internal successors, (160), 28 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-10-13 00:10:43,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:10:43,726 INFO L225 Difference]: With dead ends: 2547 [2021-10-13 00:10:43,727 INFO L226 Difference]: Without dead ends: 2546 [2021-10-13 00:10:43,728 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 403.4ms TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2021-10-13 00:10:43,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2546 states. [2021-10-13 00:10:43,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2546 to 1344. [2021-10-13 00:10:43,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1344 states, 1342 states have (on average 1.1609538002980626) internal successors, (1558), 1343 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:43,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 1558 transitions. [2021-10-13 00:10:43,788 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 1558 transitions. Word has length 160 [2021-10-13 00:10:43,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:10:43,789 INFO L470 AbstractCegarLoop]: Abstraction has 1344 states and 1558 transitions. [2021-10-13 00:10:43,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 5.714285714285714) internal successors, (160), 28 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:43,789 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 1558 transitions. [2021-10-13 00:10:43,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-10-13 00:10:43,792 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:10:43,792 INFO L512 BasicCegarLoop]: trace histogram [27, 26, 26, 19, 19, 19, 8, 8, 8, 1, 1] [2021-10-13 00:10:43,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2021-10-13 00:10:44,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:10:44,019 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:10:44,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:10:44,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1355830898, now seen corresponding path program 13 times [2021-10-13 00:10:44,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:10:44,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529442391] [2021-10-13 00:10:44,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:10:44,020 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:10:44,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:10:44,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1776 backedges. 565 proven. 1064 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-10-13 00:10:44,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:10:44,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529442391] [2021-10-13 00:10:44,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529442391] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:10:44,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690918510] [2021-10-13 00:10:44,346 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 00:10:44,346 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:10:44,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:10:44,349 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:10:44,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-10-13 00:10:45,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:10:45,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 00:10:45,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:10:46,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1776 backedges. 565 proven. 1064 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-10-13 00:10:46,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690918510] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:10:46,048 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:10:46,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2021-10-13 00:10:46,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979177827] [2021-10-13 00:10:46,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 00:10:46,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:10:46,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 00:10:46,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-10-13 00:10:46,050 INFO L87 Difference]: Start difference. First operand 1344 states and 1558 transitions. Second operand has 22 states, 22 states have (on average 5.636363636363637) internal successors, (124), 21 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:46,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:10:46,142 INFO L93 Difference]: Finished difference Result 2587 states and 3016 transitions. [2021-10-13 00:10:46,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 00:10:46,143 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.636363636363637) internal successors, (124), 21 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 162 [2021-10-13 00:10:46,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:10:46,147 INFO L225 Difference]: With dead ends: 2587 [2021-10-13 00:10:46,147 INFO L226 Difference]: Without dead ends: 1354 [2021-10-13 00:10:46,149 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 224.8ms TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-10-13 00:10:46,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2021-10-13 00:10:46,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1350. [2021-10-13 00:10:46,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1348 states have (on average 1.1602373887240356) internal successors, (1564), 1349 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:46,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 1564 transitions. [2021-10-13 00:10:46,186 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 1564 transitions. Word has length 162 [2021-10-13 00:10:46,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:10:46,186 INFO L470 AbstractCegarLoop]: Abstraction has 1350 states and 1564 transitions. [2021-10-13 00:10:46,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.636363636363637) internal successors, (124), 21 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:46,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 1564 transitions. [2021-10-13 00:10:46,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-10-13 00:10:46,189 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:10:46,189 INFO L512 BasicCegarLoop]: trace histogram [28, 28, 27, 27, 27, 27, 1, 1] [2021-10-13 00:10:46,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2021-10-13 00:10:46,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-10-13 00:10:46,405 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:10:46,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:10:46,405 INFO L82 PathProgramCache]: Analyzing trace with hash -588420658, now seen corresponding path program 26 times [2021-10-13 00:10:46,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:10:46,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892521592] [2021-10-13 00:10:46,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:10:46,406 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:10:46,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:10:46,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2187 backedges. 0 proven. 2187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:46,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:10:46,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892521592] [2021-10-13 00:10:46,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892521592] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:10:46,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699854345] [2021-10-13 00:10:46,956 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:10:46,956 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:10:46,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:10:46,961 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:10:46,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-10-13 00:10:48,309 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:10:48,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:10:48,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-13 00:10:48,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:10:48,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2187 backedges. 0 proven. 2187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:48,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699854345] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:10:48,821 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:10:48,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2021-10-13 00:10:48,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235224862] [2021-10-13 00:10:48,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-13 00:10:48,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:10:48,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-13 00:10:48,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2021-10-13 00:10:48,823 INFO L87 Difference]: Start difference. First operand 1350 states and 1564 transitions. Second operand has 30 states, 29 states have (on average 5.724137931034483) internal successors, (166), 29 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:49,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:10:49,073 INFO L93 Difference]: Finished difference Result 2657 states and 3092 transitions. [2021-10-13 00:10:49,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 00:10:49,078 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 5.724137931034483) internal successors, (166), 29 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2021-10-13 00:10:49,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:10:49,083 INFO L225 Difference]: With dead ends: 2657 [2021-10-13 00:10:49,083 INFO L226 Difference]: Without dead ends: 2656 [2021-10-13 00:10:49,084 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 385.0ms TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2021-10-13 00:10:49,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2656 states. [2021-10-13 00:10:49,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2656 to 1401. [2021-10-13 00:10:49,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1401 states, 1399 states have (on average 1.1608291636883488) internal successors, (1624), 1400 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:49,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1401 states to 1401 states and 1624 transitions. [2021-10-13 00:10:49,117 INFO L78 Accepts]: Start accepts. Automaton has 1401 states and 1624 transitions. Word has length 166 [2021-10-13 00:10:49,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:10:49,118 INFO L470 AbstractCegarLoop]: Abstraction has 1401 states and 1624 transitions. [2021-10-13 00:10:49,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 5.724137931034483) internal successors, (166), 29 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:49,118 INFO L276 IsEmpty]: Start isEmpty. Operand 1401 states and 1624 transitions. [2021-10-13 00:10:49,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-10-13 00:10:49,120 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:10:49,121 INFO L512 BasicCegarLoop]: trace histogram [28, 27, 27, 20, 20, 20, 8, 8, 8, 1, 1] [2021-10-13 00:10:49,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2021-10-13 00:10:49,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-10-13 00:10:49,333 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:10:49,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:10:49,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1212850681, now seen corresponding path program 14 times [2021-10-13 00:10:49,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:10:49,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051823263] [2021-10-13 00:10:49,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:10:49,334 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:10:49,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:10:49,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1921 backedges. 594 proven. 1180 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-10-13 00:10:49,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:10:49,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051823263] [2021-10-13 00:10:49,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051823263] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:10:49,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401924861] [2021-10-13 00:10:49,709 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:10:49,709 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:10:49,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:10:49,711 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:10:49,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-10-13 00:10:51,054 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:10:51,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:10:51,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 00:10:51,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:10:51,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1921 backedges. 594 proven. 1180 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-10-13 00:10:51,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401924861] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:10:51,540 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:10:51,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-10-13 00:10:51,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181688498] [2021-10-13 00:10:51,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 00:10:51,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:10:51,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 00:10:51,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2021-10-13 00:10:51,542 INFO L87 Difference]: Start difference. First operand 1401 states and 1624 transitions. Second operand has 23 states, 23 states have (on average 5.6521739130434785) internal successors, (130), 22 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:51,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:10:51,656 INFO L93 Difference]: Finished difference Result 2695 states and 3142 transitions. [2021-10-13 00:10:51,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 00:10:51,657 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.6521739130434785) internal successors, (130), 22 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 168 [2021-10-13 00:10:51,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:10:51,660 INFO L225 Difference]: With dead ends: 2695 [2021-10-13 00:10:51,661 INFO L226 Difference]: Without dead ends: 1411 [2021-10-13 00:10:51,663 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 269.8ms TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2021-10-13 00:10:51,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1411 states. [2021-10-13 00:10:51,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1411 to 1407. [2021-10-13 00:10:51,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1407 states, 1405 states have (on average 1.1601423487544484) internal successors, (1630), 1406 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:51,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1407 states to 1407 states and 1630 transitions. [2021-10-13 00:10:51,704 INFO L78 Accepts]: Start accepts. Automaton has 1407 states and 1630 transitions. Word has length 168 [2021-10-13 00:10:51,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:10:51,704 INFO L470 AbstractCegarLoop]: Abstraction has 1407 states and 1630 transitions. [2021-10-13 00:10:51,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.6521739130434785) internal successors, (130), 22 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:51,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1407 states and 1630 transitions. [2021-10-13 00:10:51,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-10-13 00:10:51,707 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:10:51,707 INFO L512 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 28, 28, 1, 1] [2021-10-13 00:10:51,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2021-10-13 00:10:51,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:10:51,929 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:10:51,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:10:51,929 INFO L82 PathProgramCache]: Analyzing trace with hash 170015175, now seen corresponding path program 27 times [2021-10-13 00:10:51,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:10:51,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92175977] [2021-10-13 00:10:51,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:10:51,930 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:10:52,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:10:52,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:52,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:10:52,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92175977] [2021-10-13 00:10:52,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92175977] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:10:52,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496557391] [2021-10-13 00:10:52,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:10:52,521 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:10:52,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:10:52,522 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:10:52,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-10-13 00:10:53,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 29 check-sat command(s) [2021-10-13 00:10:53,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:10:53,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-13 00:10:53,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:10:54,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:54,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496557391] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:10:54,517 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:10:54,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2021-10-13 00:10:54,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913266991] [2021-10-13 00:10:54,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-10-13 00:10:54,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:10:54,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-10-13 00:10:54,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2021-10-13 00:10:54,519 INFO L87 Difference]: Start difference. First operand 1407 states and 1630 transitions. Second operand has 31 states, 30 states have (on average 5.733333333333333) internal successors, (172), 30 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:54,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:10:54,842 INFO L93 Difference]: Finished difference Result 2767 states and 3220 transitions. [2021-10-13 00:10:54,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-13 00:10:54,843 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 5.733333333333333) internal successors, (172), 30 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 172 [2021-10-13 00:10:54,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:10:54,849 INFO L225 Difference]: With dead ends: 2767 [2021-10-13 00:10:54,849 INFO L226 Difference]: Without dead ends: 2766 [2021-10-13 00:10:54,851 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 421.2ms TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2021-10-13 00:10:54,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2766 states. [2021-10-13 00:10:54,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2766 to 1458. [2021-10-13 00:10:54,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1458 states, 1456 states have (on average 1.1607142857142858) internal successors, (1690), 1457 states have internal predecessors, (1690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:54,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 1690 transitions. [2021-10-13 00:10:54,897 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 1690 transitions. Word has length 172 [2021-10-13 00:10:54,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:10:54,898 INFO L470 AbstractCegarLoop]: Abstraction has 1458 states and 1690 transitions. [2021-10-13 00:10:54,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 5.733333333333333) internal successors, (172), 30 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:54,898 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 1690 transitions. [2021-10-13 00:10:54,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-10-13 00:10:54,900 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:10:54,901 INFO L512 BasicCegarLoop]: trace histogram [29, 28, 28, 21, 21, 21, 8, 8, 8, 1, 1] [2021-10-13 00:10:54,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2021-10-13 00:10:55,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:10:55,115 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:10:55,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:10:55,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1794511808, now seen corresponding path program 15 times [2021-10-13 00:10:55,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:10:55,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486801531] [2021-10-13 00:10:55,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:10:55,116 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:10:55,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:10:55,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2072 backedges. 623 proven. 1302 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-10-13 00:10:55,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:10:55,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486801531] [2021-10-13 00:10:55,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486801531] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:10:55,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274404871] [2021-10-13 00:10:55,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:10:55,533 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:10:55,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:10:55,534 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:10:55,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-10-13 00:10:57,095 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-10-13 00:10:57,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:10:57,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 00:10:57,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:10:57,888 INFO L134 CoverageAnalysis]: Checked inductivity of 2072 backedges. 797 proven. 211 refuted. 0 times theorem prover too weak. 1064 trivial. 0 not checked. [2021-10-13 00:10:57,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274404871] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:10:57,888 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:10:57,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 11] total 34 [2021-10-13 00:10:57,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041406416] [2021-10-13 00:10:57,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-10-13 00:10:57,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:10:57,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-10-13 00:10:57,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 00:10:57,890 INFO L87 Difference]: Start difference. First operand 1458 states and 1690 transitions. Second operand has 34 states, 34 states have (on average 5.911764705882353) internal successors, (201), 34 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:58,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:10:58,080 INFO L93 Difference]: Finished difference Result 3077 states and 3627 transitions. [2021-10-13 00:10:58,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-13 00:10:58,081 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.911764705882353) internal successors, (201), 34 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 174 [2021-10-13 00:10:58,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:10:58,084 INFO L225 Difference]: With dead ends: 3077 [2021-10-13 00:10:58,084 INFO L226 Difference]: Without dead ends: 1742 [2021-10-13 00:10:58,086 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 524.1ms TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 00:10:58,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1742 states. [2021-10-13 00:10:58,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1742 to 1722. [2021-10-13 00:10:58,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1722 states, 1720 states have (on average 1.1598837209302326) internal successors, (1995), 1721 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:58,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1722 states to 1722 states and 1995 transitions. [2021-10-13 00:10:58,136 INFO L78 Accepts]: Start accepts. Automaton has 1722 states and 1995 transitions. Word has length 174 [2021-10-13 00:10:58,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:10:58,136 INFO L470 AbstractCegarLoop]: Abstraction has 1722 states and 1995 transitions. [2021-10-13 00:10:58,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.911764705882353) internal successors, (201), 34 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:10:58,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1722 states and 1995 transitions. [2021-10-13 00:10:58,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-10-13 00:10:58,139 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:10:58,139 INFO L512 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 29, 29, 1, 1] [2021-10-13 00:10:58,191 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2021-10-13 00:10:58,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-10-13 00:10:58,365 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:10:58,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:10:58,365 INFO L82 PathProgramCache]: Analyzing trace with hash 506424064, now seen corresponding path program 28 times [2021-10-13 00:10:58,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:10:58,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016084601] [2021-10-13 00:10:58,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:10:58,366 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:10:58,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:10:58,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2523 backedges. 0 proven. 2523 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:58,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:10:58,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016084601] [2021-10-13 00:10:58,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016084601] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:10:58,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022709987] [2021-10-13 00:10:58,973 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 00:10:58,973 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:10:58,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:10:58,974 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:10:58,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-10-13 00:11:00,511 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 00:11:00,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:11:00,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-13 00:11:00,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:11:01,066 INFO L134 CoverageAnalysis]: Checked inductivity of 2523 backedges. 0 proven. 2523 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:11:01,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022709987] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:11:01,066 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:11:01,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2021-10-13 00:11:01,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736528383] [2021-10-13 00:11:01,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-13 00:11:01,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:11:01,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-13 00:11:01,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2021-10-13 00:11:01,068 INFO L87 Difference]: Start difference. First operand 1722 states and 1995 transitions. Second operand has 32 states, 31 states have (on average 5.741935483870968) internal successors, (178), 31 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:01,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:11:01,329 INFO L93 Difference]: Finished difference Result 3393 states and 3948 transitions. [2021-10-13 00:11:01,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 00:11:01,330 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 5.741935483870968) internal successors, (178), 31 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 178 [2021-10-13 00:11:01,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:11:01,335 INFO L225 Difference]: With dead ends: 3393 [2021-10-13 00:11:01,335 INFO L226 Difference]: Without dead ends: 3392 [2021-10-13 00:11:01,337 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 455.5ms TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2021-10-13 00:11:01,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3392 states. [2021-10-13 00:11:01,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3392 to 1785. [2021-10-13 00:11:01,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1785 states, 1783 states have (on average 1.1604038137969714) internal successors, (2069), 1784 states have internal predecessors, (2069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:01,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1785 states to 1785 states and 2069 transitions. [2021-10-13 00:11:01,386 INFO L78 Accepts]: Start accepts. Automaton has 1785 states and 2069 transitions. Word has length 178 [2021-10-13 00:11:01,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:11:01,386 INFO L470 AbstractCegarLoop]: Abstraction has 1785 states and 2069 transitions. [2021-10-13 00:11:01,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 5.741935483870968) internal successors, (178), 31 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:01,387 INFO L276 IsEmpty]: Start isEmpty. Operand 1785 states and 2069 transitions. [2021-10-13 00:11:01,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-10-13 00:11:01,389 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:11:01,389 INFO L512 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 30, 30, 1, 1] [2021-10-13 00:11:01,426 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2021-10-13 00:11:01,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-10-13 00:11:01,609 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:11:01,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:11:01,609 INFO L82 PathProgramCache]: Analyzing trace with hash 219614585, now seen corresponding path program 29 times [2021-10-13 00:11:01,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:11:01,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444181530] [2021-10-13 00:11:01,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:11:01,610 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:11:01,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:11:02,177 INFO L134 CoverageAnalysis]: Checked inductivity of 2700 backedges. 0 proven. 2700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:11:02,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:11:02,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444181530] [2021-10-13 00:11:02,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444181530] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:11:02,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722276568] [2021-10-13 00:11:02,177 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 00:11:02,178 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:11:02,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:11:02,185 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:11:02,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-10-13 00:11:03,761 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2021-10-13 00:11:03,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:11:03,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-13 00:11:03,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:11:04,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2700 backedges. 0 proven. 2700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:11:04,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722276568] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:11:04,397 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:11:04,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2021-10-13 00:11:04,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628344987] [2021-10-13 00:11:04,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-10-13 00:11:04,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:11:04,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-10-13 00:11:04,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2021-10-13 00:11:04,399 INFO L87 Difference]: Start difference. First operand 1785 states and 2069 transitions. Second operand has 33 states, 32 states have (on average 5.75) internal successors, (184), 32 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:04,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:11:04,649 INFO L93 Difference]: Finished difference Result 3521 states and 4098 transitions. [2021-10-13 00:11:04,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-13 00:11:04,650 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 5.75) internal successors, (184), 32 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 184 [2021-10-13 00:11:04,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:11:04,657 INFO L225 Difference]: With dead ends: 3521 [2021-10-13 00:11:04,658 INFO L226 Difference]: Without dead ends: 3520 [2021-10-13 00:11:04,660 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 427.7ms TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2021-10-13 00:11:04,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3520 states. [2021-10-13 00:11:04,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3520 to 1848. [2021-10-13 00:11:04,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1848 states, 1846 states have (on average 1.1608884073672807) internal successors, (2143), 1847 states have internal predecessors, (2143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:04,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1848 states to 1848 states and 2143 transitions. [2021-10-13 00:11:04,735 INFO L78 Accepts]: Start accepts. Automaton has 1848 states and 2143 transitions. Word has length 184 [2021-10-13 00:11:04,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:11:04,736 INFO L470 AbstractCegarLoop]: Abstraction has 1848 states and 2143 transitions. [2021-10-13 00:11:04,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 5.75) internal successors, (184), 32 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:04,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1848 states and 2143 transitions. [2021-10-13 00:11:04,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-10-13 00:11:04,739 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:11:04,739 INFO L512 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 1, 1] [2021-10-13 00:11:04,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2021-10-13 00:11:04,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-10-13 00:11:04,953 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:11:04,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:11:04,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1525731022, now seen corresponding path program 30 times [2021-10-13 00:11:04,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:11:04,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422982290] [2021-10-13 00:11:04,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:11:04,954 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:11:04,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:11:05,609 INFO L134 CoverageAnalysis]: Checked inductivity of 2883 backedges. 0 proven. 2883 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:11:05,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:11:05,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422982290] [2021-10-13 00:11:05,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422982290] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:11:05,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654396320] [2021-10-13 00:11:05,611 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 00:11:05,611 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:11:05,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:11:05,612 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:11:05,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-10-13 00:11:07,283 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 32 check-sat command(s) [2021-10-13 00:11:07,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:11:07,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-13 00:11:07,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:11:07,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2883 backedges. 0 proven. 2883 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:11:07,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654396320] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:11:07,886 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:11:07,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-10-13 00:11:07,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185470382] [2021-10-13 00:11:07,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-10-13 00:11:07,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:11:07,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-10-13 00:11:07,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 00:11:07,889 INFO L87 Difference]: Start difference. First operand 1848 states and 2143 transitions. Second operand has 34 states, 33 states have (on average 5.757575757575758) internal successors, (190), 33 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:08,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:11:08,229 INFO L93 Difference]: Finished difference Result 3649 states and 4248 transitions. [2021-10-13 00:11:08,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-13 00:11:08,230 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 5.757575757575758) internal successors, (190), 33 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-10-13 00:11:08,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:11:08,237 INFO L225 Difference]: With dead ends: 3649 [2021-10-13 00:11:08,237 INFO L226 Difference]: Without dead ends: 3648 [2021-10-13 00:11:08,239 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 464.6ms TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 00:11:08,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3648 states. [2021-10-13 00:11:08,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3648 to 1911. [2021-10-13 00:11:08,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1911 states, 1909 states have (on average 1.1613410162388684) internal successors, (2217), 1910 states have internal predecessors, (2217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:08,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1911 states to 1911 states and 2217 transitions. [2021-10-13 00:11:08,300 INFO L78 Accepts]: Start accepts. Automaton has 1911 states and 2217 transitions. Word has length 190 [2021-10-13 00:11:08,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:11:08,300 INFO L470 AbstractCegarLoop]: Abstraction has 1911 states and 2217 transitions. [2021-10-13 00:11:08,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 5.757575757575758) internal successors, (190), 33 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:08,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1911 states and 2217 transitions. [2021-10-13 00:11:08,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-10-13 00:11:08,303 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:11:08,304 INFO L512 BasicCegarLoop]: trace histogram [33, 33, 32, 32, 32, 32, 1, 1] [2021-10-13 00:11:08,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2021-10-13 00:11:08,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:11:08,529 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:11:08,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:11:08,529 INFO L82 PathProgramCache]: Analyzing trace with hash 394389035, now seen corresponding path program 31 times [2021-10-13 00:11:08,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:11:08,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406851369] [2021-10-13 00:11:08,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:11:08,530 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:11:08,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:11:09,174 INFO L134 CoverageAnalysis]: Checked inductivity of 3072 backedges. 0 proven. 3072 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:11:09,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:11:09,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406851369] [2021-10-13 00:11:09,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406851369] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:11:09,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079684662] [2021-10-13 00:11:09,175 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 00:11:09,175 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:11:09,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:11:09,176 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:11:09,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2021-10-13 00:11:10,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:11:10,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-13 00:11:10,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:11:11,621 INFO L134 CoverageAnalysis]: Checked inductivity of 3072 backedges. 0 proven. 3072 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:11:11,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079684662] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:11:11,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:11:11,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2021-10-13 00:11:11,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993291999] [2021-10-13 00:11:11,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-10-13 00:11:11,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:11:11,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-10-13 00:11:11,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2021-10-13 00:11:11,624 INFO L87 Difference]: Start difference. First operand 1911 states and 2217 transitions. Second operand has 35 states, 34 states have (on average 5.764705882352941) internal successors, (196), 34 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:11,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:11:11,994 INFO L93 Difference]: Finished difference Result 3777 states and 4398 transitions. [2021-10-13 00:11:11,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-13 00:11:11,995 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 5.764705882352941) internal successors, (196), 34 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 196 [2021-10-13 00:11:11,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:11:12,001 INFO L225 Difference]: With dead ends: 3777 [2021-10-13 00:11:12,001 INFO L226 Difference]: Without dead ends: 3776 [2021-10-13 00:11:12,003 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 508.2ms TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2021-10-13 00:11:12,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3776 states. [2021-10-13 00:11:12,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3776 to 1974. [2021-10-13 00:11:12,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1974 states, 1972 states have (on average 1.161764705882353) internal successors, (2291), 1973 states have internal predecessors, (2291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:12,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 2291 transitions. [2021-10-13 00:11:12,064 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 2291 transitions. Word has length 196 [2021-10-13 00:11:12,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:11:12,064 INFO L470 AbstractCegarLoop]: Abstraction has 1974 states and 2291 transitions. [2021-10-13 00:11:12,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 5.764705882352941) internal successors, (196), 34 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:12,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 2291 transitions. [2021-10-13 00:11:12,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-10-13 00:11:12,067 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:11:12,067 INFO L512 BasicCegarLoop]: trace histogram [33, 32, 32, 23, 23, 23, 10, 10, 10, 1, 1] [2021-10-13 00:11:12,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2021-10-13 00:11:12,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:11:12,281 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:11:12,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:11:12,281 INFO L82 PathProgramCache]: Analyzing trace with hash 666443416, now seen corresponding path program 16 times [2021-10-13 00:11:12,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:11:12,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19297467] [2021-10-13 00:11:12,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:11:12,282 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:11:12,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:11:12,785 INFO L134 CoverageAnalysis]: Checked inductivity of 2676 backedges. 869 proven. 1564 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2021-10-13 00:11:12,785 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:11:12,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19297467] [2021-10-13 00:11:12,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19297467] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:11:12,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126261889] [2021-10-13 00:11:12,786 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 00:11:12,786 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:11:12,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:11:12,789 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:11:12,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2021-10-13 00:11:14,678 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 00:11:14,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:11:14,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 00:11:14,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:11:15,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2676 backedges. 869 proven. 1564 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2021-10-13 00:11:15,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126261889] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:11:15,257 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:11:15,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-10-13 00:11:15,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968558412] [2021-10-13 00:11:15,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 00:11:15,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:11:15,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 00:11:15,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2021-10-13 00:11:15,258 INFO L87 Difference]: Start difference. First operand 1974 states and 2291 transitions. Second operand has 26 states, 26 states have (on average 5.6923076923076925) internal successors, (148), 25 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:15,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:11:15,414 INFO L93 Difference]: Finished difference Result 3823 states and 4458 transitions. [2021-10-13 00:11:15,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 00:11:15,426 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.6923076923076925) internal successors, (148), 25 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 198 [2021-10-13 00:11:15,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:11:15,429 INFO L225 Difference]: With dead ends: 3823 [2021-10-13 00:11:15,430 INFO L226 Difference]: Without dead ends: 1984 [2021-10-13 00:11:15,433 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 315.4ms TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2021-10-13 00:11:15,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1984 states. [2021-10-13 00:11:15,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1984 to 1980. [2021-10-13 00:11:15,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1980 states, 1978 states have (on average 1.1612740141557127) internal successors, (2297), 1979 states have internal predecessors, (2297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:15,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1980 states to 1980 states and 2297 transitions. [2021-10-13 00:11:15,502 INFO L78 Accepts]: Start accepts. Automaton has 1980 states and 2297 transitions. Word has length 198 [2021-10-13 00:11:15,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:11:15,503 INFO L470 AbstractCegarLoop]: Abstraction has 1980 states and 2297 transitions. [2021-10-13 00:11:15,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.6923076923076925) internal successors, (148), 25 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:15,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1980 states and 2297 transitions. [2021-10-13 00:11:15,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-10-13 00:11:15,507 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:11:15,507 INFO L512 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 33, 33, 1, 1] [2021-10-13 00:11:15,549 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2021-10-13 00:11:15,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:11:15,721 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:11:15,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:11:15,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1039319964, now seen corresponding path program 32 times [2021-10-13 00:11:15,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:11:15,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111915330] [2021-10-13 00:11:15,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:11:15,722 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:11:15,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:11:16,536 INFO L134 CoverageAnalysis]: Checked inductivity of 3267 backedges. 0 proven. 3267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:11:16,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:11:16,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111915330] [2021-10-13 00:11:16,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111915330] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:11:16,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631407459] [2021-10-13 00:11:16,537 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:11:16,537 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:11:16,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:11:16,539 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:11:16,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2021-10-13 00:11:18,565 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:11:18,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:11:18,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-13 00:11:18,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:11:19,200 INFO L134 CoverageAnalysis]: Checked inductivity of 3267 backedges. 0 proven. 3267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:11:19,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631407459] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:11:19,200 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:11:19,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2021-10-13 00:11:19,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742886025] [2021-10-13 00:11:19,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-10-13 00:11:19,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:11:19,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-10-13 00:11:19,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 00:11:19,202 INFO L87 Difference]: Start difference. First operand 1980 states and 2297 transitions. Second operand has 36 states, 35 states have (on average 5.771428571428571) internal successors, (202), 35 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:19,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:11:19,570 INFO L93 Difference]: Finished difference Result 3911 states and 4554 transitions. [2021-10-13 00:11:19,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 00:11:19,571 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 5.771428571428571) internal successors, (202), 35 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 202 [2021-10-13 00:11:19,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:11:19,577 INFO L225 Difference]: With dead ends: 3911 [2021-10-13 00:11:19,578 INFO L226 Difference]: Without dead ends: 3910 [2021-10-13 00:11:19,580 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 650.5ms TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 00:11:19,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3910 states. [2021-10-13 00:11:19,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3910 to 2043. [2021-10-13 00:11:19,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2043 states, 2041 states have (on average 1.1616854483096521) internal successors, (2371), 2042 states have internal predecessors, (2371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:19,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2043 states to 2043 states and 2371 transitions. [2021-10-13 00:11:19,631 INFO L78 Accepts]: Start accepts. Automaton has 2043 states and 2371 transitions. Word has length 202 [2021-10-13 00:11:19,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:11:19,632 INFO L470 AbstractCegarLoop]: Abstraction has 2043 states and 2371 transitions. [2021-10-13 00:11:19,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 5.771428571428571) internal successors, (202), 35 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:19,632 INFO L276 IsEmpty]: Start isEmpty. Operand 2043 states and 2371 transitions. [2021-10-13 00:11:19,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-10-13 00:11:19,635 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:11:19,635 INFO L512 BasicCegarLoop]: trace histogram [34, 33, 33, 24, 24, 24, 10, 10, 10, 1, 1] [2021-10-13 00:11:19,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2021-10-13 00:11:19,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:11:19,849 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:11:19,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:11:19,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1556597393, now seen corresponding path program 17 times [2021-10-13 00:11:19,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:11:19,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924809804] [2021-10-13 00:11:19,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:11:19,850 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:11:19,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:11:20,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2853 backedges. 906 proven. 1704 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2021-10-13 00:11:20,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:11:20,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924809804] [2021-10-13 00:11:20,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924809804] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:11:20,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076250024] [2021-10-13 00:11:20,304 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 00:11:20,304 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:11:20,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:11:20,309 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:11:20,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2021-10-13 00:11:22,351 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2021-10-13 00:11:22,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:11:22,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-13 00:11:22,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:11:22,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2853 backedges. 906 proven. 1704 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2021-10-13 00:11:22,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076250024] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:11:22,950 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:11:22,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2021-10-13 00:11:22,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500512474] [2021-10-13 00:11:22,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-13 00:11:22,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:11:22,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-13 00:11:22,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2021-10-13 00:11:22,953 INFO L87 Difference]: Start difference. First operand 2043 states and 2371 transitions. Second operand has 27 states, 27 states have (on average 5.703703703703703) internal successors, (154), 26 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:23,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:11:23,106 INFO L93 Difference]: Finished difference Result 3955 states and 4612 transitions. [2021-10-13 00:11:23,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 00:11:23,106 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.703703703703703) internal successors, (154), 26 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 204 [2021-10-13 00:11:23,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:11:23,110 INFO L225 Difference]: With dead ends: 3955 [2021-10-13 00:11:23,110 INFO L226 Difference]: Without dead ends: 2053 [2021-10-13 00:11:23,113 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 334.5ms TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2021-10-13 00:11:23,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2053 states. [2021-10-13 00:11:23,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2053 to 2049. [2021-10-13 00:11:23,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2049 states, 2047 states have (on average 1.1612115290669272) internal successors, (2377), 2048 states have internal predecessors, (2377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:23,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2049 states to 2049 states and 2377 transitions. [2021-10-13 00:11:23,172 INFO L78 Accepts]: Start accepts. Automaton has 2049 states and 2377 transitions. Word has length 204 [2021-10-13 00:11:23,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:11:23,172 INFO L470 AbstractCegarLoop]: Abstraction has 2049 states and 2377 transitions. [2021-10-13 00:11:23,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.703703703703703) internal successors, (154), 26 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:23,173 INFO L276 IsEmpty]: Start isEmpty. Operand 2049 states and 2377 transitions. [2021-10-13 00:11:23,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-10-13 00:11:23,175 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:11:23,176 INFO L512 BasicCegarLoop]: trace histogram [35, 35, 34, 34, 34, 34, 1, 1] [2021-10-13 00:11:23,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2021-10-13 00:11:23,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:11:23,389 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:11:23,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:11:23,389 INFO L82 PathProgramCache]: Analyzing trace with hash 931349469, now seen corresponding path program 33 times [2021-10-13 00:11:23,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:11:23,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500740944] [2021-10-13 00:11:23,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:11:23,390 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:11:23,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:11:24,273 INFO L134 CoverageAnalysis]: Checked inductivity of 3468 backedges. 0 proven. 3468 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:11:24,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:11:24,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500740944] [2021-10-13 00:11:24,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500740944] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:11:24,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423330398] [2021-10-13 00:11:24,274 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:11:24,274 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:11:24,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:11:24,275 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:11:24,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2021-10-13 00:11:26,378 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 35 check-sat command(s) [2021-10-13 00:11:26,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:11:26,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-13 00:11:26,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:11:27,188 INFO L134 CoverageAnalysis]: Checked inductivity of 3468 backedges. 0 proven. 3468 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:11:27,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423330398] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:11:27,188 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:11:27,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2021-10-13 00:11:27,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223828368] [2021-10-13 00:11:27,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-10-13 00:11:27,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:11:27,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-10-13 00:11:27,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2021-10-13 00:11:27,191 INFO L87 Difference]: Start difference. First operand 2049 states and 2377 transitions. Second operand has 37 states, 36 states have (on average 5.777777777777778) internal successors, (208), 36 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:27,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:11:27,629 INFO L93 Difference]: Finished difference Result 4045 states and 4710 transitions. [2021-10-13 00:11:27,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-13 00:11:27,630 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 5.777777777777778) internal successors, (208), 36 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 208 [2021-10-13 00:11:27,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:11:27,634 INFO L225 Difference]: With dead ends: 4045 [2021-10-13 00:11:27,635 INFO L226 Difference]: Without dead ends: 4044 [2021-10-13 00:11:27,636 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 675.4ms TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2021-10-13 00:11:27,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4044 states. [2021-10-13 00:11:27,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4044 to 2112. [2021-10-13 00:11:27,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2112 states, 2110 states have (on average 1.1616113744075829) internal successors, (2451), 2111 states have internal predecessors, (2451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:27,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2112 states to 2112 states and 2451 transitions. [2021-10-13 00:11:27,695 INFO L78 Accepts]: Start accepts. Automaton has 2112 states and 2451 transitions. Word has length 208 [2021-10-13 00:11:27,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:11:27,696 INFO L470 AbstractCegarLoop]: Abstraction has 2112 states and 2451 transitions. [2021-10-13 00:11:27,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 5.777777777777778) internal successors, (208), 36 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:27,696 INFO L276 IsEmpty]: Start isEmpty. Operand 2112 states and 2451 transitions. [2021-10-13 00:11:27,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-10-13 00:11:27,698 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:11:27,698 INFO L512 BasicCegarLoop]: trace histogram [35, 34, 34, 25, 25, 25, 10, 10, 10, 1, 1] [2021-10-13 00:11:27,730 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2021-10-13 00:11:27,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-10-13 00:11:27,899 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:11:27,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:11:27,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1289344970, now seen corresponding path program 18 times [2021-10-13 00:11:27,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:11:27,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283596267] [2021-10-13 00:11:27,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:11:27,900 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:11:27,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:11:28,404 INFO L134 CoverageAnalysis]: Checked inductivity of 3036 backedges. 943 proven. 1850 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2021-10-13 00:11:28,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:11:28,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283596267] [2021-10-13 00:11:28,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283596267] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:11:28,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703032505] [2021-10-13 00:11:28,405 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 00:11:28,405 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:11:28,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:11:28,406 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:11:28,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2021-10-13 00:11:30,519 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2021-10-13 00:11:30,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:11:30,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 00:11:30,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:11:31,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3036 backedges. 1149 proven. 323 refuted. 0 times theorem prover too weak. 1564 trivial. 0 not checked. [2021-10-13 00:11:31,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703032505] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:11:31,454 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:11:31,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 13] total 40 [2021-10-13 00:11:31,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602604502] [2021-10-13 00:11:31,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-10-13 00:11:31,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:11:31,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-10-13 00:11:31,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 00:11:31,456 INFO L87 Difference]: Start difference. First operand 2112 states and 2451 transitions. Second operand has 40 states, 40 states have (on average 5.925) internal successors, (237), 40 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:31,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:11:31,679 INFO L93 Difference]: Finished difference Result 4413 states and 5193 transitions. [2021-10-13 00:11:31,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-13 00:11:31,680 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 5.925) internal successors, (237), 40 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 210 [2021-10-13 00:11:31,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:11:31,682 INFO L225 Difference]: With dead ends: 4413 [2021-10-13 00:11:31,682 INFO L226 Difference]: Without dead ends: 2448 [2021-10-13 00:11:31,685 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 723.8ms TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 00:11:31,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2448 states. [2021-10-13 00:11:31,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2448 to 2424. [2021-10-13 00:11:31,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2424 states, 2422 states have (on average 1.1610239471511148) internal successors, (2812), 2423 states have internal predecessors, (2812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:31,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2424 states to 2424 states and 2812 transitions. [2021-10-13 00:11:31,733 INFO L78 Accepts]: Start accepts. Automaton has 2424 states and 2812 transitions. Word has length 210 [2021-10-13 00:11:31,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:11:31,734 INFO L470 AbstractCegarLoop]: Abstraction has 2424 states and 2812 transitions. [2021-10-13 00:11:31,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 5.925) internal successors, (237), 40 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:31,734 INFO L276 IsEmpty]: Start isEmpty. Operand 2424 states and 2812 transitions. [2021-10-13 00:11:31,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-10-13 00:11:31,737 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:11:31,737 INFO L512 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 35, 35, 1, 1] [2021-10-13 00:11:31,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2021-10-13 00:11:31,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-10-13 00:11:31,965 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:11:31,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:11:31,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1997927274, now seen corresponding path program 34 times [2021-10-13 00:11:31,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:11:31,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456568002] [2021-10-13 00:11:31,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:11:31,966 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:11:32,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:11:32,770 INFO L134 CoverageAnalysis]: Checked inductivity of 3675 backedges. 0 proven. 3675 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:11:32,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:11:32,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456568002] [2021-10-13 00:11:32,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456568002] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:11:32,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558529828] [2021-10-13 00:11:32,771 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 00:11:32,771 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:11:32,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:11:32,796 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:11:32,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2021-10-13 00:11:34,949 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 00:11:34,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:11:34,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-13 00:11:34,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:11:35,672 INFO L134 CoverageAnalysis]: Checked inductivity of 3675 backedges. 0 proven. 3675 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:11:35,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558529828] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:11:35,672 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:11:35,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-10-13 00:11:35,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123164618] [2021-10-13 00:11:35,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-10-13 00:11:35,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:11:35,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-10-13 00:11:35,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 00:11:35,676 INFO L87 Difference]: Start difference. First operand 2424 states and 2812 transitions. Second operand has 38 states, 37 states have (on average 5.783783783783784) internal successors, (214), 37 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:36,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:11:36,175 INFO L93 Difference]: Finished difference Result 4791 states and 5578 transitions. [2021-10-13 00:11:36,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-13 00:11:36,176 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 5.783783783783784) internal successors, (214), 37 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 214 [2021-10-13 00:11:36,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:11:36,182 INFO L225 Difference]: With dead ends: 4791 [2021-10-13 00:11:36,182 INFO L226 Difference]: Without dead ends: 4790 [2021-10-13 00:11:36,185 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 608.0ms TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 00:11:36,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4790 states. [2021-10-13 00:11:36,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4790 to 2499. [2021-10-13 00:11:36,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2499 states, 2497 states have (on average 1.1613936724068883) internal successors, (2900), 2498 states have internal predecessors, (2900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:36,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2499 states to 2499 states and 2900 transitions. [2021-10-13 00:11:36,277 INFO L78 Accepts]: Start accepts. Automaton has 2499 states and 2900 transitions. Word has length 214 [2021-10-13 00:11:36,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:11:36,277 INFO L470 AbstractCegarLoop]: Abstraction has 2499 states and 2900 transitions. [2021-10-13 00:11:36,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 5.783783783783784) internal successors, (214), 37 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:36,277 INFO L276 IsEmpty]: Start isEmpty. Operand 2499 states and 2900 transitions. [2021-10-13 00:11:36,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-10-13 00:11:36,279 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:11:36,279 INFO L512 BasicCegarLoop]: trace histogram [37, 37, 36, 36, 36, 36, 1, 1] [2021-10-13 00:11:36,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2021-10-13 00:11:36,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-10-13 00:11:36,480 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:11:36,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:11:36,480 INFO L82 PathProgramCache]: Analyzing trace with hash -830757233, now seen corresponding path program 35 times [2021-10-13 00:11:36,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:11:36,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236711327] [2021-10-13 00:11:36,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:11:36,481 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:11:36,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:11:37,399 INFO L134 CoverageAnalysis]: Checked inductivity of 3888 backedges. 0 proven. 3888 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:11:37,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:11:37,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236711327] [2021-10-13 00:11:37,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236711327] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:11:37,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180104213] [2021-10-13 00:11:37,400 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 00:11:37,401 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:11:37,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:11:37,405 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:11:37,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2021-10-13 00:11:40,009 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2021-10-13 00:11:40,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:11:40,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-13 00:11:40,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:11:40,699 INFO L134 CoverageAnalysis]: Checked inductivity of 3888 backedges. 0 proven. 3888 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:11:40,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180104213] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:11:40,700 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:11:40,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2021-10-13 00:11:40,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77963975] [2021-10-13 00:11:40,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-10-13 00:11:40,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:11:40,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-10-13 00:11:40,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 00:11:40,702 INFO L87 Difference]: Start difference. First operand 2499 states and 2900 transitions. Second operand has 39 states, 38 states have (on average 5.7894736842105265) internal successors, (220), 38 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) [2021-10-13 00:11:41,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:11:41,051 INFO L93 Difference]: Finished difference Result 4943 states and 5756 transitions. [2021-10-13 00:11:41,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-13 00:11:41,052 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 5.7894736842105265) internal successors, (220), 38 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) Word has length 220 [2021-10-13 00:11:41,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:11:41,057 INFO L225 Difference]: With dead ends: 4943 [2021-10-13 00:11:41,057 INFO L226 Difference]: Without dead ends: 4942 [2021-10-13 00:11:41,059 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 773.3ms TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 00:11:41,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4942 states. [2021-10-13 00:11:41,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4942 to 2574. [2021-10-13 00:11:41,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2574 states, 2572 states have (on average 1.1617418351477449) internal successors, (2988), 2573 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:41,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2574 states to 2574 states and 2988 transitions. [2021-10-13 00:11:41,173 INFO L78 Accepts]: Start accepts. Automaton has 2574 states and 2988 transitions. Word has length 220 [2021-10-13 00:11:41,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:11:41,173 INFO L470 AbstractCegarLoop]: Abstraction has 2574 states and 2988 transitions. [2021-10-13 00:11:41,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 5.7894736842105265) internal successors, (220), 38 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) [2021-10-13 00:11:41,173 INFO L276 IsEmpty]: Start isEmpty. Operand 2574 states and 2988 transitions. [2021-10-13 00:11:41,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-10-13 00:11:41,175 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:11:41,175 INFO L512 BasicCegarLoop]: trace histogram [38, 38, 37, 37, 37, 37, 1, 1] [2021-10-13 00:11:41,206 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2021-10-13 00:11:41,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-10-13 00:11:41,375 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:11:41,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:11:41,376 INFO L82 PathProgramCache]: Analyzing trace with hash -257547832, now seen corresponding path program 36 times [2021-10-13 00:11:41,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:11:41,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101147380] [2021-10-13 00:11:41,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:11:41,376 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:11:41,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:11:42,277 INFO L134 CoverageAnalysis]: Checked inductivity of 4107 backedges. 0 proven. 4107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:11:42,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:11:42,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101147380] [2021-10-13 00:11:42,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101147380] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:11:42,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801852820] [2021-10-13 00:11:42,278 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 00:11:42,278 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:11:42,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:11:42,279 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:11:42,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2021-10-13 00:11:44,638 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 38 check-sat command(s) [2021-10-13 00:11:44,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:11:44,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 39 conjunts are in the unsatisfiable core [2021-10-13 00:11:44,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:11:45,319 INFO L134 CoverageAnalysis]: Checked inductivity of 4107 backedges. 0 proven. 4107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:11:45,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801852820] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:11:45,320 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:11:45,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2021-10-13 00:11:45,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372921285] [2021-10-13 00:11:45,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-10-13 00:11:45,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:11:45,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-10-13 00:11:45,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 00:11:45,322 INFO L87 Difference]: Start difference. First operand 2574 states and 2988 transitions. Second operand has 40 states, 39 states have (on average 5.794871794871795) internal successors, (226), 39 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:45,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:11:45,720 INFO L93 Difference]: Finished difference Result 5095 states and 5934 transitions. [2021-10-13 00:11:45,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-13 00:11:45,720 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 5.794871794871795) internal successors, (226), 39 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 226 [2021-10-13 00:11:45,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:11:45,725 INFO L225 Difference]: With dead ends: 5095 [2021-10-13 00:11:45,725 INFO L226 Difference]: Without dead ends: 5094 [2021-10-13 00:11:45,726 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 757.9ms TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 00:11:45,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5094 states. [2021-10-13 00:11:45,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5094 to 2649. [2021-10-13 00:11:45,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2649 states, 2647 states have (on average 1.162070268228183) internal successors, (3076), 2648 states have internal predecessors, (3076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:45,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2649 states to 2649 states and 3076 transitions. [2021-10-13 00:11:45,779 INFO L78 Accepts]: Start accepts. Automaton has 2649 states and 3076 transitions. Word has length 226 [2021-10-13 00:11:45,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:11:45,779 INFO L470 AbstractCegarLoop]: Abstraction has 2649 states and 3076 transitions. [2021-10-13 00:11:45,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 5.794871794871795) internal successors, (226), 39 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:45,779 INFO L276 IsEmpty]: Start isEmpty. Operand 2649 states and 3076 transitions. [2021-10-13 00:11:45,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-10-13 00:11:45,781 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:11:45,782 INFO L512 BasicCegarLoop]: trace histogram [39, 39, 38, 38, 38, 38, 1, 1] [2021-10-13 00:11:45,819 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2021-10-13 00:11:45,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-10-13 00:11:45,999 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:11:46,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:11:46,000 INFO L82 PathProgramCache]: Analyzing trace with hash -1324642751, now seen corresponding path program 37 times [2021-10-13 00:11:46,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:11:46,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266765446] [2021-10-13 00:11:46,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:11:46,000 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:11:46,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:11:46,822 INFO L134 CoverageAnalysis]: Checked inductivity of 4332 backedges. 0 proven. 4332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:11:46,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:11:46,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266765446] [2021-10-13 00:11:46,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266765446] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:11:46,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293800425] [2021-10-13 00:11:46,822 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 00:11:46,822 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:11:46,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:11:46,823 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:11:46,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2021-10-13 00:11:49,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:11:49,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 40 conjunts are in the unsatisfiable core [2021-10-13 00:11:49,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:11:50,004 INFO L134 CoverageAnalysis]: Checked inductivity of 4332 backedges. 0 proven. 4332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:11:50,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293800425] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:11:50,005 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:11:50,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2021-10-13 00:11:50,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264553525] [2021-10-13 00:11:50,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-10-13 00:11:50,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:11:50,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-10-13 00:11:50,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2021-10-13 00:11:50,007 INFO L87 Difference]: Start difference. First operand 2649 states and 3076 transitions. Second operand has 41 states, 40 states have (on average 5.8) internal successors, (232), 40 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:50,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:11:50,393 INFO L93 Difference]: Finished difference Result 5247 states and 6112 transitions. [2021-10-13 00:11:50,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-13 00:11:50,394 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 5.8) internal successors, (232), 40 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 232 [2021-10-13 00:11:50,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:11:50,399 INFO L225 Difference]: With dead ends: 5247 [2021-10-13 00:11:50,399 INFO L226 Difference]: Without dead ends: 5246 [2021-10-13 00:11:50,400 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 671.1ms TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2021-10-13 00:11:50,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5246 states. [2021-10-13 00:11:50,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5246 to 2724. [2021-10-13 00:11:50,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2724 states, 2722 states have (on average 1.162380602498163) internal successors, (3164), 2723 states have internal predecessors, (3164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:50,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2724 states to 2724 states and 3164 transitions. [2021-10-13 00:11:50,460 INFO L78 Accepts]: Start accepts. Automaton has 2724 states and 3164 transitions. Word has length 232 [2021-10-13 00:11:50,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:11:50,460 INFO L470 AbstractCegarLoop]: Abstraction has 2724 states and 3164 transitions. [2021-10-13 00:11:50,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 5.8) internal successors, (232), 40 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:50,461 INFO L276 IsEmpty]: Start isEmpty. Operand 2724 states and 3164 transitions. [2021-10-13 00:11:50,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-10-13 00:11:50,463 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:11:50,463 INFO L512 BasicCegarLoop]: trace histogram [39, 38, 38, 27, 27, 27, 12, 12, 12, 1, 1] [2021-10-13 00:11:50,496 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2021-10-13 00:11:50,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:11:50,664 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:11:50,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:11:50,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1381135010, now seen corresponding path program 19 times [2021-10-13 00:11:50,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:11:50,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77635481] [2021-10-13 00:11:50,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:11:50,665 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:11:50,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:11:51,271 INFO L134 CoverageAnalysis]: Checked inductivity of 3760 backedges. 1237 proven. 2160 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2021-10-13 00:11:51,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:11:51,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77635481] [2021-10-13 00:11:51,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77635481] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:11:51,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415694547] [2021-10-13 00:11:51,272 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 00:11:51,273 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:11:51,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:11:51,274 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:11:51,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2021-10-13 00:11:53,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:11:53,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-13 00:11:53,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:11:54,468 INFO L134 CoverageAnalysis]: Checked inductivity of 3760 backedges. 1237 proven. 2160 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2021-10-13 00:11:54,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415694547] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:11:54,469 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:11:54,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2021-10-13 00:11:54,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106876740] [2021-10-13 00:11:54,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-13 00:11:54,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:11:54,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-13 00:11:54,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2021-10-13 00:11:54,471 INFO L87 Difference]: Start difference. First operand 2724 states and 3164 transitions. Second operand has 30 states, 30 states have (on average 5.733333333333333) internal successors, (172), 29 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:54,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:11:54,604 INFO L93 Difference]: Finished difference Result 5299 states and 6180 transitions. [2021-10-13 00:11:54,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 00:11:54,605 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.733333333333333) internal successors, (172), 29 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 234 [2021-10-13 00:11:54,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:11:54,608 INFO L225 Difference]: With dead ends: 5299 [2021-10-13 00:11:54,608 INFO L226 Difference]: Without dead ends: 2734 [2021-10-13 00:11:54,611 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 409.4ms TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2021-10-13 00:11:54,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2734 states. [2021-10-13 00:11:54,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2734 to 2730. [2021-10-13 00:11:54,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2730 states, 2728 states have (on average 1.1620234604105573) internal successors, (3170), 2729 states have internal predecessors, (3170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:54,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2730 states to 2730 states and 3170 transitions. [2021-10-13 00:11:54,687 INFO L78 Accepts]: Start accepts. Automaton has 2730 states and 3170 transitions. Word has length 234 [2021-10-13 00:11:54,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:11:54,688 INFO L470 AbstractCegarLoop]: Abstraction has 2730 states and 3170 transitions. [2021-10-13 00:11:54,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.733333333333333) internal successors, (172), 29 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:54,688 INFO L276 IsEmpty]: Start isEmpty. Operand 2730 states and 3170 transitions. [2021-10-13 00:11:54,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-10-13 00:11:54,690 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:11:54,691 INFO L512 BasicCegarLoop]: trace histogram [40, 40, 39, 39, 39, 39, 1, 1] [2021-10-13 00:11:54,722 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2021-10-13 00:11:54,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:11:54,891 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:11:54,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:11:54,892 INFO L82 PathProgramCache]: Analyzing trace with hash -209585158, now seen corresponding path program 38 times [2021-10-13 00:11:54,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:11:54,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208005382] [2021-10-13 00:11:54,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:11:54,892 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:11:54,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:11:55,794 INFO L134 CoverageAnalysis]: Checked inductivity of 4563 backedges. 0 proven. 4563 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:11:55,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:11:55,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208005382] [2021-10-13 00:11:55,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208005382] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:11:55,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981691975] [2021-10-13 00:11:55,795 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:11:55,795 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:11:55,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:11:55,796 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:11:55,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2021-10-13 00:11:58,322 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:11:58,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:11:58,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 41 conjunts are in the unsatisfiable core [2021-10-13 00:11:58,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:11:59,039 INFO L134 CoverageAnalysis]: Checked inductivity of 4563 backedges. 0 proven. 4563 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:11:59,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981691975] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:11:59,040 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:11:59,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2021-10-13 00:11:59,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287463803] [2021-10-13 00:11:59,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-10-13 00:11:59,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:11:59,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-10-13 00:11:59,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2021-10-13 00:11:59,042 INFO L87 Difference]: Start difference. First operand 2730 states and 3170 transitions. Second operand has 42 states, 41 states have (on average 5.804878048780488) internal successors, (238), 41 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:59,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:11:59,416 INFO L93 Difference]: Finished difference Result 5405 states and 6296 transitions. [2021-10-13 00:11:59,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-13 00:11:59,417 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 5.804878048780488) internal successors, (238), 41 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 238 [2021-10-13 00:11:59,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:11:59,422 INFO L225 Difference]: With dead ends: 5405 [2021-10-13 00:11:59,422 INFO L226 Difference]: Without dead ends: 5404 [2021-10-13 00:11:59,424 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 706.7ms TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2021-10-13 00:11:59,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5404 states. [2021-10-13 00:11:59,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5404 to 2805. [2021-10-13 00:11:59,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2805 states, 2803 states have (on average 1.1623260792008563) internal successors, (3258), 2804 states have internal predecessors, (3258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:59,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2805 states to 2805 states and 3258 transitions. [2021-10-13 00:11:59,486 INFO L78 Accepts]: Start accepts. Automaton has 2805 states and 3258 transitions. Word has length 238 [2021-10-13 00:11:59,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:11:59,486 INFO L470 AbstractCegarLoop]: Abstraction has 2805 states and 3258 transitions. [2021-10-13 00:11:59,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 5.804878048780488) internal successors, (238), 41 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:59,487 INFO L276 IsEmpty]: Start isEmpty. Operand 2805 states and 3258 transitions. [2021-10-13 00:11:59,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2021-10-13 00:11:59,489 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:11:59,489 INFO L512 BasicCegarLoop]: trace histogram [40, 39, 39, 28, 28, 28, 12, 12, 12, 1, 1] [2021-10-13 00:11:59,524 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2021-10-13 00:11:59,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2021-10-13 00:11:59,690 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:11:59,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:11:59,690 INFO L82 PathProgramCache]: Analyzing trace with hash -790342117, now seen corresponding path program 20 times [2021-10-13 00:11:59,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:11:59,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025645297] [2021-10-13 00:11:59,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:11:59,691 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:11:59,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:12:00,216 INFO L134 CoverageAnalysis]: Checked inductivity of 3969 backedges. 1282 proven. 2324 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2021-10-13 00:12:00,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:12:00,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025645297] [2021-10-13 00:12:00,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025645297] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:12:00,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994250225] [2021-10-13 00:12:00,217 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:12:00,217 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:12:00,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:12:00,219 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:12:00,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2021-10-13 00:12:02,839 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:12:02,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:12:02,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-13 00:12:02,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:12:03,492 INFO L134 CoverageAnalysis]: Checked inductivity of 3969 backedges. 1282 proven. 2324 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2021-10-13 00:12:03,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994250225] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:12:03,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:12:03,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2021-10-13 00:12:03,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825934442] [2021-10-13 00:12:03,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-10-13 00:12:03,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:12:03,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-10-13 00:12:03,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2021-10-13 00:12:03,495 INFO L87 Difference]: Start difference. First operand 2805 states and 3258 transitions. Second operand has 31 states, 31 states have (on average 5.741935483870968) internal successors, (178), 30 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:12:03,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:12:03,620 INFO L93 Difference]: Finished difference Result 5455 states and 6362 transitions. [2021-10-13 00:12:03,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-13 00:12:03,621 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.741935483870968) internal successors, (178), 30 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 240 [2021-10-13 00:12:03,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:12:03,624 INFO L225 Difference]: With dead ends: 5455 [2021-10-13 00:12:03,624 INFO L226 Difference]: Without dead ends: 2815 [2021-10-13 00:12:03,627 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 412.2ms TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2021-10-13 00:12:03,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2815 states. [2021-10-13 00:12:03,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2815 to 2811. [2021-10-13 00:12:03,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2811 states, 2809 states have (on average 1.1619793520825916) internal successors, (3264), 2810 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:12:03,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2811 states to 2811 states and 3264 transitions. [2021-10-13 00:12:03,707 INFO L78 Accepts]: Start accepts. Automaton has 2811 states and 3264 transitions. Word has length 240 [2021-10-13 00:12:03,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:12:03,708 INFO L470 AbstractCegarLoop]: Abstraction has 2811 states and 3264 transitions. [2021-10-13 00:12:03,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.741935483870968) internal successors, (178), 30 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:12:03,708 INFO L276 IsEmpty]: Start isEmpty. Operand 2811 states and 3264 transitions. [2021-10-13 00:12:03,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2021-10-13 00:12:03,711 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:12:03,711 INFO L512 BasicCegarLoop]: trace histogram [41, 41, 40, 40, 40, 40, 1, 1] [2021-10-13 00:12:03,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2021-10-13 00:12:03,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:12:03,932 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:12:03,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:12:03,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1192458995, now seen corresponding path program 39 times [2021-10-13 00:12:03,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:12:03,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648732382] [2021-10-13 00:12:03,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:12:03,933 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:12:03,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:12:04,967 INFO L134 CoverageAnalysis]: Checked inductivity of 4800 backedges. 0 proven. 4800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:12:04,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:12:04,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648732382] [2021-10-13 00:12:04,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648732382] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:12:04,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686329155] [2021-10-13 00:12:04,968 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:12:04,968 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:12:04,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:12:04,969 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:12:04,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2021-10-13 00:12:07,898 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 41 check-sat command(s) [2021-10-13 00:12:07,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:12:07,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 42 conjunts are in the unsatisfiable core [2021-10-13 00:12:07,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:12:08,708 INFO L134 CoverageAnalysis]: Checked inductivity of 4800 backedges. 0 proven. 4800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:12:08,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686329155] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:12:08,709 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:12:08,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2021-10-13 00:12:08,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663324424] [2021-10-13 00:12:08,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-10-13 00:12:08,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:12:08,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-10-13 00:12:08,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2021-10-13 00:12:08,712 INFO L87 Difference]: Start difference. First operand 2811 states and 3264 transitions. Second operand has 43 states, 42 states have (on average 5.809523809523809) internal successors, (244), 42 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:12:09,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:12:09,148 INFO L93 Difference]: Finished difference Result 5563 states and 6480 transitions. [2021-10-13 00:12:09,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-13 00:12:09,149 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 5.809523809523809) internal successors, (244), 42 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 244 [2021-10-13 00:12:09,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:12:09,154 INFO L225 Difference]: With dead ends: 5563 [2021-10-13 00:12:09,154 INFO L226 Difference]: Without dead ends: 5562 [2021-10-13 00:12:09,156 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 874.7ms TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2021-10-13 00:12:09,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5562 states. [2021-10-13 00:12:09,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5562 to 2886. [2021-10-13 00:12:09,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2886 states, 2884 states have (on average 1.1622746185852981) internal successors, (3352), 2885 states have internal predecessors, (3352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:12:09,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2886 states to 2886 states and 3352 transitions. [2021-10-13 00:12:09,220 INFO L78 Accepts]: Start accepts. Automaton has 2886 states and 3352 transitions. Word has length 244 [2021-10-13 00:12:09,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:12:09,220 INFO L470 AbstractCegarLoop]: Abstraction has 2886 states and 3352 transitions. [2021-10-13 00:12:09,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 5.809523809523809) internal successors, (244), 42 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:12:09,221 INFO L276 IsEmpty]: Start isEmpty. Operand 2886 states and 3352 transitions. [2021-10-13 00:12:09,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2021-10-13 00:12:09,223 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:12:09,223 INFO L512 BasicCegarLoop]: trace histogram [41, 40, 40, 29, 29, 29, 12, 12, 12, 1, 1] [2021-10-13 00:12:09,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2021-10-13 00:12:09,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2021-10-13 00:12:09,424 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:12:09,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:12:09,424 INFO L82 PathProgramCache]: Analyzing trace with hash -2045642028, now seen corresponding path program 21 times [2021-10-13 00:12:09,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:12:09,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776265844] [2021-10-13 00:12:09,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:12:09,425 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:12:09,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:12:10,038 INFO L134 CoverageAnalysis]: Checked inductivity of 4184 backedges. 1327 proven. 2494 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2021-10-13 00:12:10,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:12:10,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776265844] [2021-10-13 00:12:10,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776265844] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:12:10,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438728108] [2021-10-13 00:12:10,039 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:12:10,039 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:12:10,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:12:10,041 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:12:10,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2021-10-13 00:12:12,970 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2021-10-13 00:12:12,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:12:12,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 00:12:12,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:12:14,037 INFO L134 CoverageAnalysis]: Checked inductivity of 4184 backedges. 1565 proven. 459 refuted. 0 times theorem prover too weak. 2160 trivial. 0 not checked. [2021-10-13 00:12:14,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438728108] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:12:14,037 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:12:14,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 15] total 46 [2021-10-13 00:12:14,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283389368] [2021-10-13 00:12:14,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-10-13 00:12:14,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:12:14,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-10-13 00:12:14,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 00:12:14,040 INFO L87 Difference]: Start difference. First operand 2886 states and 3352 transitions. Second operand has 46 states, 46 states have (on average 5.934782608695652) internal successors, (273), 46 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:12:14,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:12:14,313 INFO L93 Difference]: Finished difference Result 5989 states and 7039 transitions. [2021-10-13 00:12:14,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-13 00:12:14,314 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 5.934782608695652) internal successors, (273), 46 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 246 [2021-10-13 00:12:14,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:12:14,318 INFO L225 Difference]: With dead ends: 5989 [2021-10-13 00:12:14,318 INFO L226 Difference]: Without dead ends: 3274 [2021-10-13 00:12:14,322 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 925.7ms TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 00:12:14,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3274 states. [2021-10-13 00:12:14,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3274 to 3246. [2021-10-13 00:12:14,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3246 states, 3244 states have (on average 1.1618372379778052) internal successors, (3769), 3245 states have internal predecessors, (3769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:12:14,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3246 states to 3246 states and 3769 transitions. [2021-10-13 00:12:14,430 INFO L78 Accepts]: Start accepts. Automaton has 3246 states and 3769 transitions. Word has length 246 [2021-10-13 00:12:14,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:12:14,431 INFO L470 AbstractCegarLoop]: Abstraction has 3246 states and 3769 transitions. [2021-10-13 00:12:14,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 5.934782608695652) internal successors, (273), 46 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:12:14,432 INFO L276 IsEmpty]: Start isEmpty. Operand 3246 states and 3769 transitions. [2021-10-13 00:12:14,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-10-13 00:12:14,436 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:12:14,436 INFO L512 BasicCegarLoop]: trace histogram [42, 42, 41, 41, 41, 41, 1, 1] [2021-10-13 00:12:14,484 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2021-10-13 00:12:14,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2021-10-13 00:12:14,653 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:12:14,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:12:14,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1359078612, now seen corresponding path program 40 times [2021-10-13 00:12:14,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:12:14,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672711507] [2021-10-13 00:12:14,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:12:14,654 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:12:14,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:12:15,591 INFO L134 CoverageAnalysis]: Checked inductivity of 5043 backedges. 0 proven. 5043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:12:15,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:12:15,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672711507] [2021-10-13 00:12:15,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672711507] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:12:15,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953340498] [2021-10-13 00:12:15,592 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 00:12:15,592 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:12:15,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:12:15,593 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:12:15,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2021-10-13 00:12:18,515 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 00:12:18,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:12:18,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 43 conjunts are in the unsatisfiable core [2021-10-13 00:12:18,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:12:19,264 INFO L134 CoverageAnalysis]: Checked inductivity of 5043 backedges. 0 proven. 5043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:12:19,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953340498] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:12:19,264 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:12:19,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2021-10-13 00:12:19,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542363181] [2021-10-13 00:12:19,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-10-13 00:12:19,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:12:19,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-10-13 00:12:19,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2021-10-13 00:12:19,268 INFO L87 Difference]: Start difference. First operand 3246 states and 3769 transitions. Second operand has 44 states, 43 states have (on average 5.813953488372093) internal successors, (250), 43 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:12:19,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:12:19,683 INFO L93 Difference]: Finished difference Result 6429 states and 7488 transitions. [2021-10-13 00:12:19,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-13 00:12:19,684 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 5.813953488372093) internal successors, (250), 43 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 250 [2021-10-13 00:12:19,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:12:19,691 INFO L225 Difference]: With dead ends: 6429 [2021-10-13 00:12:19,691 INFO L226 Difference]: Without dead ends: 6428 [2021-10-13 00:12:19,693 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 751.5ms TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2021-10-13 00:12:19,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6428 states. [2021-10-13 00:12:19,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6428 to 3333. [2021-10-13 00:12:19,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3333 states, 3331 states have (on average 1.162113479435605) internal successors, (3871), 3332 states have internal predecessors, (3871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:12:19,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3333 states to 3333 states and 3871 transitions. [2021-10-13 00:12:19,861 INFO L78 Accepts]: Start accepts. Automaton has 3333 states and 3871 transitions. Word has length 250 [2021-10-13 00:12:19,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:12:19,861 INFO L470 AbstractCegarLoop]: Abstraction has 3333 states and 3871 transitions. [2021-10-13 00:12:19,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 5.813953488372093) internal successors, (250), 43 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:12:19,861 INFO L276 IsEmpty]: Start isEmpty. Operand 3333 states and 3871 transitions. [2021-10-13 00:12:19,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2021-10-13 00:12:19,863 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:12:19,864 INFO L512 BasicCegarLoop]: trace histogram [43, 43, 42, 42, 42, 42, 1, 1] [2021-10-13 00:12:19,898 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2021-10-13 00:12:20,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:12:20,068 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:12:20,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:12:20,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1414271835, now seen corresponding path program 41 times [2021-10-13 00:12:20,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:12:20,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374131492] [2021-10-13 00:12:20,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:12:20,068 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:12:20,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:12:21,012 INFO L134 CoverageAnalysis]: Checked inductivity of 5292 backedges. 0 proven. 5292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:12:21,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:12:21,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374131492] [2021-10-13 00:12:21,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374131492] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:12:21,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737143121] [2021-10-13 00:12:21,013 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 00:12:21,013 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:12:21,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:12:21,014 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:12:21,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2021-10-13 00:12:24,042 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2021-10-13 00:12:24,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:12:24,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 44 conjunts are in the unsatisfiable core [2021-10-13 00:12:24,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:12:24,862 INFO L134 CoverageAnalysis]: Checked inductivity of 5292 backedges. 0 proven. 5292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:12:24,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737143121] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:12:24,862 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:12:24,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2021-10-13 00:12:24,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840846397] [2021-10-13 00:12:24,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-10-13 00:12:24,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:12:24,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-10-13 00:12:24,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2021-10-13 00:12:24,864 INFO L87 Difference]: Start difference. First operand 3333 states and 3871 transitions. Second operand has 45 states, 44 states have (on average 5.818181818181818) internal successors, (256), 44 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:12:25,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:12:25,267 INFO L93 Difference]: Finished difference Result 6605 states and 7694 transitions. [2021-10-13 00:12:25,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-13 00:12:25,268 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 5.818181818181818) internal successors, (256), 44 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2021-10-13 00:12:25,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:12:25,274 INFO L225 Difference]: With dead ends: 6605 [2021-10-13 00:12:25,274 INFO L226 Difference]: Without dead ends: 6604 [2021-10-13 00:12:25,277 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 789.9ms TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2021-10-13 00:12:25,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6604 states. [2021-10-13 00:12:25,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6604 to 3420. [2021-10-13 00:12:25,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3420 states, 3418 states have (on average 1.1623756582796958) internal successors, (3973), 3419 states have internal predecessors, (3973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:12:25,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3420 states to 3420 states and 3973 transitions. [2021-10-13 00:12:25,436 INFO L78 Accepts]: Start accepts. Automaton has 3420 states and 3973 transitions. Word has length 256 [2021-10-13 00:12:25,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:12:25,436 INFO L470 AbstractCegarLoop]: Abstraction has 3420 states and 3973 transitions. [2021-10-13 00:12:25,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 5.818181818181818) internal successors, (256), 44 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:12:25,437 INFO L276 IsEmpty]: Start isEmpty. Operand 3420 states and 3973 transitions. [2021-10-13 00:12:25,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2021-10-13 00:12:25,440 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:12:25,441 INFO L512 BasicCegarLoop]: trace histogram [44, 44, 43, 43, 43, 43, 1, 1] [2021-10-13 00:12:25,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2021-10-13 00:12:25,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:12:25,669 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:12:25,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:12:25,669 INFO L82 PathProgramCache]: Analyzing trace with hash -2082799778, now seen corresponding path program 42 times [2021-10-13 00:12:25,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:12:25,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655107632] [2021-10-13 00:12:25,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:12:25,670 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:12:25,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:12:26,745 INFO L134 CoverageAnalysis]: Checked inductivity of 5547 backedges. 0 proven. 5547 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:12:26,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:12:26,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655107632] [2021-10-13 00:12:26,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655107632] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:12:26,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610025167] [2021-10-13 00:12:26,746 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 00:12:26,746 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:12:26,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:12:26,747 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:12:26,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2021-10-13 00:12:29,894 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 44 check-sat command(s) [2021-10-13 00:12:29,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:12:29,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 45 conjunts are in the unsatisfiable core [2021-10-13 00:12:29,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:12:30,702 INFO L134 CoverageAnalysis]: Checked inductivity of 5547 backedges. 0 proven. 5547 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:12:30,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610025167] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:12:30,703 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:12:30,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2021-10-13 00:12:30,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898387602] [2021-10-13 00:12:30,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-10-13 00:12:30,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:12:30,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-10-13 00:12:30,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 00:12:30,706 INFO L87 Difference]: Start difference. First operand 3420 states and 3973 transitions. Second operand has 46 states, 45 states have (on average 5.822222222222222) internal successors, (262), 45 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:12:31,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:12:31,173 INFO L93 Difference]: Finished difference Result 6781 states and 7900 transitions. [2021-10-13 00:12:31,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-13 00:12:31,173 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 5.822222222222222) internal successors, (262), 45 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 262 [2021-10-13 00:12:31,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:12:31,180 INFO L225 Difference]: With dead ends: 6781 [2021-10-13 00:12:31,180 INFO L226 Difference]: Without dead ends: 6780 [2021-10-13 00:12:31,182 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 908.3ms TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 00:12:31,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6780 states. [2021-10-13 00:12:31,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6780 to 3507. [2021-10-13 00:12:31,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3507 states, 3505 states have (on average 1.1626248216833095) internal successors, (4075), 3506 states have internal predecessors, (4075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:12:31,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3507 states to 3507 states and 4075 transitions. [2021-10-13 00:12:31,256 INFO L78 Accepts]: Start accepts. Automaton has 3507 states and 4075 transitions. Word has length 262 [2021-10-13 00:12:31,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:12:31,257 INFO L470 AbstractCegarLoop]: Abstraction has 3507 states and 4075 transitions. [2021-10-13 00:12:31,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 5.822222222222222) internal successors, (262), 45 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:12:31,258 INFO L276 IsEmpty]: Start isEmpty. Operand 3507 states and 4075 transitions. [2021-10-13 00:12:31,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2021-10-13 00:12:31,261 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:12:31,262 INFO L512 BasicCegarLoop]: trace histogram [45, 45, 44, 44, 44, 44, 1, 1] [2021-10-13 00:12:31,316 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2021-10-13 00:12:31,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-10-13 00:12:31,477 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:12:31,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:12:31,477 INFO L82 PathProgramCache]: Analyzing trace with hash -850566313, now seen corresponding path program 43 times [2021-10-13 00:12:31,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:12:31,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963623858] [2021-10-13 00:12:31,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:12:31,478 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:12:31,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:12:32,537 INFO L134 CoverageAnalysis]: Checked inductivity of 5808 backedges. 0 proven. 5808 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:12:32,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:12:32,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963623858] [2021-10-13 00:12:32,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963623858] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:12:32,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807972756] [2021-10-13 00:12:32,538 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 00:12:32,538 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:12:32,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:12:32,539 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:12:32,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2021-10-13 00:12:35,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:12:35,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 46 conjunts are in the unsatisfiable core [2021-10-13 00:12:35,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:12:36,562 INFO L134 CoverageAnalysis]: Checked inductivity of 5808 backedges. 0 proven. 5808 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:12:36,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807972756] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:12:36,562 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:12:36,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2021-10-13 00:12:36,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781441954] [2021-10-13 00:12:36,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-10-13 00:12:36,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:12:36,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-10-13 00:12:36,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2021-10-13 00:12:36,564 INFO L87 Difference]: Start difference. First operand 3507 states and 4075 transitions. Second operand has 47 states, 46 states have (on average 5.826086956521739) internal successors, (268), 46 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:12:36,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:12:36,989 INFO L93 Difference]: Finished difference Result 6957 states and 8106 transitions. [2021-10-13 00:12:36,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-13 00:12:36,989 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 5.826086956521739) internal successors, (268), 46 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 268 [2021-10-13 00:12:36,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:12:36,996 INFO L225 Difference]: With dead ends: 6957 [2021-10-13 00:12:36,996 INFO L226 Difference]: Without dead ends: 6956 [2021-10-13 00:12:36,998 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 905.2ms TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2021-10-13 00:12:37,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6956 states. [2021-10-13 00:12:37,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6956 to 3594. [2021-10-13 00:12:37,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3594 states, 3592 states have (on average 1.1628619153674833) internal successors, (4177), 3593 states have internal predecessors, (4177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:12:37,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3594 states to 3594 states and 4177 transitions. [2021-10-13 00:12:37,073 INFO L78 Accepts]: Start accepts. Automaton has 3594 states and 4177 transitions. Word has length 268 [2021-10-13 00:12:37,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:12:37,074 INFO L470 AbstractCegarLoop]: Abstraction has 3594 states and 4177 transitions. [2021-10-13 00:12:37,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 5.826086956521739) internal successors, (268), 46 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:12:37,074 INFO L276 IsEmpty]: Start isEmpty. Operand 3594 states and 4177 transitions. [2021-10-13 00:12:37,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2021-10-13 00:12:37,077 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:12:37,077 INFO L512 BasicCegarLoop]: trace histogram [45, 44, 44, 31, 31, 31, 14, 14, 14, 1, 1] [2021-10-13 00:12:37,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2021-10-13 00:12:37,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:12:37,281 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:12:37,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:12:37,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1433281964, now seen corresponding path program 22 times [2021-10-13 00:12:37,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:12:37,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338334971] [2021-10-13 00:12:37,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:12:37,282 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:12:37,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:12:37,871 INFO L134 CoverageAnalysis]: Checked inductivity of 5028 backedges. 1669 proven. 2852 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2021-10-13 00:12:37,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:12:37,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338334971] [2021-10-13 00:12:37,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338334971] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:12:37,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269147346] [2021-10-13 00:12:37,872 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 00:12:37,872 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:12:37,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:12:37,873 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:12:37,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2021-10-13 00:12:41,150 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 00:12:41,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:12:41,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-13 00:12:41,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:12:41,859 INFO L134 CoverageAnalysis]: Checked inductivity of 5028 backedges. 1669 proven. 2852 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2021-10-13 00:12:41,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269147346] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:12:41,859 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:12:41,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2021-10-13 00:12:41,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729361505] [2021-10-13 00:12:41,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-10-13 00:12:41,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:12:41,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-10-13 00:12:41,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 00:12:41,861 INFO L87 Difference]: Start difference. First operand 3594 states and 4177 transitions. Second operand has 34 states, 34 states have (on average 5.764705882352941) internal successors, (196), 33 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:12:42,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:12:42,004 INFO L93 Difference]: Finished difference Result 7015 states and 8182 transitions. [2021-10-13 00:12:42,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-13 00:12:42,005 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.764705882352941) internal successors, (196), 33 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 270 [2021-10-13 00:12:42,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:12:42,009 INFO L225 Difference]: With dead ends: 7015 [2021-10-13 00:12:42,009 INFO L226 Difference]: Without dead ends: 3604 [2021-10-13 00:12:42,012 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 463.0ms TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 00:12:42,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3604 states. [2021-10-13 00:12:42,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3604 to 3600. [2021-10-13 00:12:42,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3600 states, 3598 states have (on average 1.1625903279599779) internal successors, (4183), 3599 states have internal predecessors, (4183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:12:42,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3600 states to 3600 states and 4183 transitions. [2021-10-13 00:12:42,085 INFO L78 Accepts]: Start accepts. Automaton has 3600 states and 4183 transitions. Word has length 270 [2021-10-13 00:12:42,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:12:42,085 INFO L470 AbstractCegarLoop]: Abstraction has 3600 states and 4183 transitions. [2021-10-13 00:12:42,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.764705882352941) internal successors, (196), 33 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:12:42,086 INFO L276 IsEmpty]: Start isEmpty. Operand 3600 states and 4183 transitions. [2021-10-13 00:12:42,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2021-10-13 00:12:42,088 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:12:42,088 INFO L512 BasicCegarLoop]: trace histogram [46, 46, 45, 45, 45, 45, 1, 1] [2021-10-13 00:12:42,126 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2021-10-13 00:12:42,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:12:42,289 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:12:42,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:12:42,290 INFO L82 PathProgramCache]: Analyzing trace with hash 907618448, now seen corresponding path program 44 times [2021-10-13 00:12:42,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:12:42,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837906343] [2021-10-13 00:12:42,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:12:42,290 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:12:42,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:12:43,376 INFO L134 CoverageAnalysis]: Checked inductivity of 6075 backedges. 0 proven. 6075 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:12:43,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:12:43,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837906343] [2021-10-13 00:12:43,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837906343] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:12:43,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333938528] [2021-10-13 00:12:43,377 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:12:43,377 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:12:43,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:12:43,378 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:12:43,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2021-10-13 00:12:46,780 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:12:46,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:12:46,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 47 conjunts are in the unsatisfiable core [2021-10-13 00:12:46,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:12:47,624 INFO L134 CoverageAnalysis]: Checked inductivity of 6075 backedges. 0 proven. 6075 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:12:47,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333938528] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:12:47,624 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:12:47,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2021-10-13 00:12:47,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804964206] [2021-10-13 00:12:47,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-10-13 00:12:47,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:12:47,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-10-13 00:12:47,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-10-13 00:12:47,626 INFO L87 Difference]: Start difference. First operand 3600 states and 4183 transitions. Second operand has 48 states, 47 states have (on average 5.829787234042553) internal successors, (274), 47 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:12:48,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:12:48,086 INFO L93 Difference]: Finished difference Result 7139 states and 8318 transitions. [2021-10-13 00:12:48,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-13 00:12:48,087 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 5.829787234042553) internal successors, (274), 47 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 274 [2021-10-13 00:12:48,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:12:48,094 INFO L225 Difference]: With dead ends: 7139 [2021-10-13 00:12:48,095 INFO L226 Difference]: Without dead ends: 7138 [2021-10-13 00:12:48,097 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 899.2ms TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-10-13 00:12:48,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7138 states. [2021-10-13 00:12:48,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7138 to 3687. [2021-10-13 00:12:48,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3687 states, 3685 states have (on average 1.162822252374491) internal successors, (4285), 3686 states have internal predecessors, (4285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:12:48,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3687 states to 3687 states and 4285 transitions. [2021-10-13 00:12:48,175 INFO L78 Accepts]: Start accepts. Automaton has 3687 states and 4285 transitions. Word has length 274 [2021-10-13 00:12:48,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:12:48,175 INFO L470 AbstractCegarLoop]: Abstraction has 3687 states and 4285 transitions. [2021-10-13 00:12:48,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 5.829787234042553) internal successors, (274), 47 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:12:48,176 INFO L276 IsEmpty]: Start isEmpty. Operand 3687 states and 4285 transitions. [2021-10-13 00:12:48,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2021-10-13 00:12:48,178 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:12:48,179 INFO L512 BasicCegarLoop]: trace histogram [46, 45, 45, 32, 32, 32, 14, 14, 14, 1, 1] [2021-10-13 00:12:48,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2021-10-13 00:12:48,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:12:48,379 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:12:48,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:12:48,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1168277339, now seen corresponding path program 23 times [2021-10-13 00:12:48,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:12:48,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643639279] [2021-10-13 00:12:48,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:12:48,381 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:12:48,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:12:49,085 INFO L134 CoverageAnalysis]: Checked inductivity of 5269 backedges. 1722 proven. 3040 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2021-10-13 00:12:49,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:12:49,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643639279] [2021-10-13 00:12:49,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643639279] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:12:49,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574379873] [2021-10-13 00:12:49,085 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 00:12:49,086 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:12:49,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:12:49,086 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:12:49,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2021-10-13 00:12:52,689 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2021-10-13 00:12:52,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:12:52,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-13 00:12:52,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:12:53,581 INFO L134 CoverageAnalysis]: Checked inductivity of 5269 backedges. 1722 proven. 3040 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2021-10-13 00:12:53,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574379873] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:12:53,581 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:12:53,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2021-10-13 00:12:53,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107560100] [2021-10-13 00:12:53,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-10-13 00:12:53,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:12:53,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-10-13 00:12:53,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2021-10-13 00:12:53,584 INFO L87 Difference]: Start difference. First operand 3687 states and 4285 transitions. Second operand has 35 states, 35 states have (on average 5.771428571428571) internal successors, (202), 34 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:12:53,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:12:53,753 INFO L93 Difference]: Finished difference Result 7195 states and 8392 transitions. [2021-10-13 00:12:53,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-13 00:12:53,753 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.771428571428571) internal successors, (202), 34 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 276 [2021-10-13 00:12:53,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:12:53,757 INFO L225 Difference]: With dead ends: 7195 [2021-10-13 00:12:53,757 INFO L226 Difference]: Without dead ends: 3697 [2021-10-13 00:12:53,760 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 555.1ms TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2021-10-13 00:12:53,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3697 states. [2021-10-13 00:12:53,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3697 to 3693. [2021-10-13 00:12:53,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3693 states, 3691 states have (on average 1.1625575724735844) internal successors, (4291), 3692 states have internal predecessors, (4291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:12:53,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3693 states to 3693 states and 4291 transitions. [2021-10-13 00:12:53,834 INFO L78 Accepts]: Start accepts. Automaton has 3693 states and 4291 transitions. Word has length 276 [2021-10-13 00:12:53,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:12:53,834 INFO L470 AbstractCegarLoop]: Abstraction has 3693 states and 4291 transitions. [2021-10-13 00:12:53,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 5.771428571428571) internal successors, (202), 34 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:12:53,835 INFO L276 IsEmpty]: Start isEmpty. Operand 3693 states and 4291 transitions. [2021-10-13 00:12:53,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2021-10-13 00:12:53,837 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:12:53,837 INFO L512 BasicCegarLoop]: trace histogram [47, 47, 46, 46, 46, 46, 1, 1] [2021-10-13 00:12:53,874 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2021-10-13 00:12:54,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:12:54,038 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:12:54,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:12:54,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1920966903, now seen corresponding path program 45 times [2021-10-13 00:12:54,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:12:54,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412152282] [2021-10-13 00:12:54,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:12:54,039 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:12:54,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:12:55,136 INFO L134 CoverageAnalysis]: Checked inductivity of 6348 backedges. 0 proven. 6348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:12:55,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:12:55,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412152282] [2021-10-13 00:12:55,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412152282] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:12:55,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548973653] [2021-10-13 00:12:55,137 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:12:55,137 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:12:55,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:12:55,138 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:12:55,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2021-10-13 00:12:58,767 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2021-10-13 00:12:58,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:12:58,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 48 conjunts are in the unsatisfiable core [2021-10-13 00:12:58,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:12:59,629 INFO L134 CoverageAnalysis]: Checked inductivity of 6348 backedges. 0 proven. 6348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:12:59,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548973653] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:12:59,630 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:12:59,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2021-10-13 00:12:59,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934055169] [2021-10-13 00:12:59,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-10-13 00:12:59,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:12:59,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-10-13 00:12:59,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2021-10-13 00:12:59,632 INFO L87 Difference]: Start difference. First operand 3693 states and 4291 transitions. Second operand has 49 states, 48 states have (on average 5.833333333333333) internal successors, (280), 48 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:13:00,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:13:00,194 INFO L93 Difference]: Finished difference Result 7321 states and 8530 transitions. [2021-10-13 00:13:00,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-10-13 00:13:00,194 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 5.833333333333333) internal successors, (280), 48 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 280 [2021-10-13 00:13:00,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:13:00,201 INFO L225 Difference]: With dead ends: 7321 [2021-10-13 00:13:00,201 INFO L226 Difference]: Without dead ends: 7320 [2021-10-13 00:13:00,202 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 937.8ms TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2021-10-13 00:13:00,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7320 states. [2021-10-13 00:13:00,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7320 to 3780. [2021-10-13 00:13:00,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3780 states, 3778 states have (on average 1.1627845420857597) internal successors, (4393), 3779 states have internal predecessors, (4393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:13:00,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3780 states to 3780 states and 4393 transitions. [2021-10-13 00:13:00,301 INFO L78 Accepts]: Start accepts. Automaton has 3780 states and 4393 transitions. Word has length 280 [2021-10-13 00:13:00,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:13:00,301 INFO L470 AbstractCegarLoop]: Abstraction has 3780 states and 4393 transitions. [2021-10-13 00:13:00,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 5.833333333333333) internal successors, (280), 48 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:13:00,301 INFO L276 IsEmpty]: Start isEmpty. Operand 3780 states and 4393 transitions. [2021-10-13 00:13:00,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2021-10-13 00:13:00,304 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:13:00,304 INFO L512 BasicCegarLoop]: trace histogram [47, 46, 46, 33, 33, 33, 14, 14, 14, 1, 1] [2021-10-13 00:13:00,343 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2021-10-13 00:13:00,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:13:00,505 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:13:00,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:13:00,506 INFO L82 PathProgramCache]: Analyzing trace with hash -724501282, now seen corresponding path program 24 times [2021-10-13 00:13:00,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:13:00,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48750819] [2021-10-13 00:13:00,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:13:00,506 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:13:00,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:13:01,114 INFO L134 CoverageAnalysis]: Checked inductivity of 5516 backedges. 1775 proven. 3234 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2021-10-13 00:13:01,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:13:01,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48750819] [2021-10-13 00:13:01,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48750819] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:13:01,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113410522] [2021-10-13 00:13:01,114 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 00:13:01,114 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:13:01,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:13:01,115 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:13:01,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2021-10-13 00:13:04,793 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 29 check-sat command(s) [2021-10-13 00:13:04,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:13:04,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 00:13:04,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:13:06,012 INFO L134 CoverageAnalysis]: Checked inductivity of 5516 backedges. 2045 proven. 619 refuted. 0 times theorem prover too weak. 2852 trivial. 0 not checked. [2021-10-13 00:13:06,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113410522] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:13:06,013 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:13:06,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 17] total 52 [2021-10-13 00:13:06,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357660296] [2021-10-13 00:13:06,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-10-13 00:13:06,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:13:06,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-10-13 00:13:06,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2021-10-13 00:13:06,015 INFO L87 Difference]: Start difference. First operand 3780 states and 4393 transitions. Second operand has 52 states, 52 states have (on average 5.9423076923076925) internal successors, (309), 52 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:13:06,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:13:06,330 INFO L93 Difference]: Finished difference Result 7805 states and 9165 transitions. [2021-10-13 00:13:06,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-10-13 00:13:06,330 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 5.9423076923076925) internal successors, (309), 52 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 282 [2021-10-13 00:13:06,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:13:06,335 INFO L225 Difference]: With dead ends: 7805 [2021-10-13 00:13:06,335 INFO L226 Difference]: Without dead ends: 4220 [2021-10-13 00:13:06,339 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1030.9ms TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2021-10-13 00:13:06,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4220 states. [2021-10-13 00:13:06,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4220 to 4188. [2021-10-13 00:13:06,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4188 states, 4186 states have (on average 1.1624462494027712) internal successors, (4866), 4187 states have internal predecessors, (4866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:13:06,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4188 states to 4188 states and 4866 transitions. [2021-10-13 00:13:06,439 INFO L78 Accepts]: Start accepts. Automaton has 4188 states and 4866 transitions. Word has length 282 [2021-10-13 00:13:06,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:13:06,440 INFO L470 AbstractCegarLoop]: Abstraction has 4188 states and 4866 transitions. [2021-10-13 00:13:06,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.9423076923076925) internal successors, (309), 52 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:13:06,440 INFO L276 IsEmpty]: Start isEmpty. Operand 4188 states and 4866 transitions. [2021-10-13 00:13:06,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2021-10-13 00:13:06,444 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:13:06,444 INFO L512 BasicCegarLoop]: trace histogram [48, 48, 47, 47, 47, 47, 1, 1] [2021-10-13 00:13:06,494 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2021-10-13 00:13:06,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2021-10-13 00:13:06,661 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:13:06,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:13:06,661 INFO L82 PathProgramCache]: Analyzing trace with hash 217650882, now seen corresponding path program 46 times [2021-10-13 00:13:06,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:13:06,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198723776] [2021-10-13 00:13:06,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:13:06,662 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:13:06,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:13:07,922 INFO L134 CoverageAnalysis]: Checked inductivity of 6627 backedges. 0 proven. 6627 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:13:07,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:13:07,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198723776] [2021-10-13 00:13:07,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198723776] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:13:07,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675055010] [2021-10-13 00:13:07,923 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 00:13:07,923 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:13:07,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:13:07,924 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:13:07,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2021-10-13 00:13:11,712 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 00:13:11,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:13:11,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 49 conjunts are in the unsatisfiable core [2021-10-13 00:13:11,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:13:12,557 INFO L134 CoverageAnalysis]: Checked inductivity of 6627 backedges. 0 proven. 6627 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:13:12,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675055010] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:13:12,557 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:13:12,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2021-10-13 00:13:12,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498067639] [2021-10-13 00:13:12,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-10-13 00:13:12,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:13:12,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-10-13 00:13:12,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2021-10-13 00:13:12,559 INFO L87 Difference]: Start difference. First operand 4188 states and 4866 transitions. Second operand has 50 states, 49 states have (on average 5.836734693877551) internal successors, (286), 49 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:13:13,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:13:13,044 INFO L93 Difference]: Finished difference Result 8307 states and 9678 transitions. [2021-10-13 00:13:13,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-13 00:13:13,045 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 5.836734693877551) internal successors, (286), 49 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) Word has length 286 [2021-10-13 00:13:13,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:13:13,053 INFO L225 Difference]: With dead ends: 8307 [2021-10-13 00:13:13,053 INFO L226 Difference]: Without dead ends: 8306 [2021-10-13 00:13:13,056 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1041.6ms TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2021-10-13 00:13:13,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8306 states. [2021-10-13 00:13:13,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8306 to 4287. [2021-10-13 00:13:13,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4287 states, 4285 states have (on average 1.1626604434072345) internal successors, (4982), 4286 states have internal predecessors, (4982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:13:13,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4287 states to 4287 states and 4982 transitions. [2021-10-13 00:13:13,201 INFO L78 Accepts]: Start accepts. Automaton has 4287 states and 4982 transitions. Word has length 286 [2021-10-13 00:13:13,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:13:13,201 INFO L470 AbstractCegarLoop]: Abstraction has 4287 states and 4982 transitions. [2021-10-13 00:13:13,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 5.836734693877551) internal successors, (286), 49 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:13:13,202 INFO L276 IsEmpty]: Start isEmpty. Operand 4287 states and 4982 transitions. [2021-10-13 00:13:13,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2021-10-13 00:13:13,204 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:13:13,205 INFO L512 BasicCegarLoop]: trace histogram [49, 49, 48, 48, 48, 48, 1, 1] [2021-10-13 00:13:13,245 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2021-10-13 00:13:13,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:13:13,405 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:13:13,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:13:13,406 INFO L82 PathProgramCache]: Analyzing trace with hash -517120069, now seen corresponding path program 47 times [2021-10-13 00:13:13,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:13:13,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566222691] [2021-10-13 00:13:13,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:13:13,406 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:13:13,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:13:14,644 INFO L134 CoverageAnalysis]: Checked inductivity of 6912 backedges. 0 proven. 6912 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:13:14,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:13:14,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566222691] [2021-10-13 00:13:14,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566222691] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:13:14,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689582538] [2021-10-13 00:13:14,644 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 00:13:14,645 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:13:14,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:13:14,646 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:13:14,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2021-10-13 00:13:18,560 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2021-10-13 00:13:18,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:13:18,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 50 conjunts are in the unsatisfiable core [2021-10-13 00:13:18,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:13:19,411 INFO L134 CoverageAnalysis]: Checked inductivity of 6912 backedges. 0 proven. 6912 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:13:19,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689582538] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:13:19,411 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:13:19,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2021-10-13 00:13:19,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843029580] [2021-10-13 00:13:19,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-10-13 00:13:19,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:13:19,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-10-13 00:13:19,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2021-10-13 00:13:19,413 INFO L87 Difference]: Start difference. First operand 4287 states and 4982 transitions. Second operand has 51 states, 50 states have (on average 5.84) internal successors, (292), 50 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:13:19,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:13:19,908 INFO L93 Difference]: Finished difference Result 8507 states and 9912 transitions. [2021-10-13 00:13:19,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-10-13 00:13:19,908 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 5.84) internal successors, (292), 50 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 292 [2021-10-13 00:13:19,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:13:19,917 INFO L225 Difference]: With dead ends: 8507 [2021-10-13 00:13:19,917 INFO L226 Difference]: Without dead ends: 8506 [2021-10-13 00:13:19,920 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1065.1ms TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2021-10-13 00:13:19,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8506 states. [2021-10-13 00:13:20,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8506 to 4386. [2021-10-13 00:13:20,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4386 states, 4384 states have (on average 1.1628649635036497) internal successors, (5098), 4385 states have internal predecessors, (5098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:13:20,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4386 states to 4386 states and 5098 transitions. [2021-10-13 00:13:20,083 INFO L78 Accepts]: Start accepts. Automaton has 4386 states and 5098 transitions. Word has length 292 [2021-10-13 00:13:20,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:13:20,083 INFO L470 AbstractCegarLoop]: Abstraction has 4386 states and 5098 transitions. [2021-10-13 00:13:20,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 5.84) internal successors, (292), 50 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:13:20,084 INFO L276 IsEmpty]: Start isEmpty. Operand 4386 states and 5098 transitions. [2021-10-13 00:13:20,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2021-10-13 00:13:20,088 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:13:20,088 INFO L512 BasicCegarLoop]: trace histogram [50, 50, 49, 49, 49, 49, 1, 1] [2021-10-13 00:13:20,132 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2021-10-13 00:13:20,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:13:20,305 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:13:20,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:13:20,305 INFO L82 PathProgramCache]: Analyzing trace with hash -218412556, now seen corresponding path program 48 times [2021-10-13 00:13:20,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:13:20,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335078678] [2021-10-13 00:13:20,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:13:20,306 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:13:20,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:13:21,614 INFO L134 CoverageAnalysis]: Checked inductivity of 7203 backedges. 0 proven. 7203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:13:21,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:13:21,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335078678] [2021-10-13 00:13:21,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335078678] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:13:21,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401121107] [2021-10-13 00:13:21,614 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 00:13:21,614 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:13:21,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:13:21,616 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:13:21,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2021-10-13 00:13:25,634 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 50 check-sat command(s) [2021-10-13 00:13:25,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:13:25,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 51 conjunts are in the unsatisfiable core [2021-10-13 00:13:25,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:13:26,502 INFO L134 CoverageAnalysis]: Checked inductivity of 7203 backedges. 0 proven. 7203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:13:26,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401121107] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:13:26,503 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:13:26,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2021-10-13 00:13:26,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368650159] [2021-10-13 00:13:26,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-10-13 00:13:26,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:13:26,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-10-13 00:13:26,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2021-10-13 00:13:26,505 INFO L87 Difference]: Start difference. First operand 4386 states and 5098 transitions. Second operand has 52 states, 51 states have (on average 5.8431372549019605) internal successors, (298), 51 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:13:27,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:13:27,013 INFO L93 Difference]: Finished difference Result 8707 states and 10146 transitions. [2021-10-13 00:13:27,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-10-13 00:13:27,014 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 5.8431372549019605) internal successors, (298), 51 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2021-10-13 00:13:27,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:13:27,023 INFO L225 Difference]: With dead ends: 8707 [2021-10-13 00:13:27,023 INFO L226 Difference]: Without dead ends: 8706 [2021-10-13 00:13:27,026 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1124.7ms TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2021-10-13 00:13:27,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8706 states. [2021-10-13 00:13:27,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8706 to 4485. [2021-10-13 00:13:27,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4485 states, 4483 states have (on average 1.163060450591122) internal successors, (5214), 4484 states have internal predecessors, (5214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:13:27,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4485 states to 4485 states and 5214 transitions. [2021-10-13 00:13:27,126 INFO L78 Accepts]: Start accepts. Automaton has 4485 states and 5214 transitions. Word has length 298 [2021-10-13 00:13:27,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:13:27,127 INFO L470 AbstractCegarLoop]: Abstraction has 4485 states and 5214 transitions. [2021-10-13 00:13:27,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 5.8431372549019605) internal successors, (298), 51 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:13:27,127 INFO L276 IsEmpty]: Start isEmpty. Operand 4485 states and 5214 transitions. [2021-10-13 00:13:27,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2021-10-13 00:13:27,130 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:13:27,130 INFO L512 BasicCegarLoop]: trace histogram [51, 51, 50, 50, 50, 50, 1, 1] [2021-10-13 00:13:27,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2021-10-13 00:13:27,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:13:27,331 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:13:27,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:13:27,332 INFO L82 PathProgramCache]: Analyzing trace with hash -260774547, now seen corresponding path program 49 times [2021-10-13 00:13:27,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:13:27,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892286319] [2021-10-13 00:13:27,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:13:27,333 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:13:27,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:13:28,667 INFO L134 CoverageAnalysis]: Checked inductivity of 7500 backedges. 0 proven. 7500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:13:28,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:13:28,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892286319] [2021-10-13 00:13:28,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892286319] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:13:28,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969506296] [2021-10-13 00:13:28,668 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 00:13:28,668 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:13:28,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:13:28,669 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:13:28,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2021-10-13 00:13:32,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:13:32,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 52 conjunts are in the unsatisfiable core [2021-10-13 00:13:32,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:13:33,442 INFO L134 CoverageAnalysis]: Checked inductivity of 7500 backedges. 0 proven. 7500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:13:33,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969506296] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:13:33,442 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:13:33,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2021-10-13 00:13:33,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109027245] [2021-10-13 00:13:33,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-10-13 00:13:33,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:13:33,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-10-13 00:13:33,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2021-10-13 00:13:33,444 INFO L87 Difference]: Start difference. First operand 4485 states and 5214 transitions. Second operand has 53 states, 52 states have (on average 5.846153846153846) internal successors, (304), 52 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:13:33,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:13:33,914 INFO L93 Difference]: Finished difference Result 8907 states and 10380 transitions. [2021-10-13 00:13:33,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-10-13 00:13:33,914 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 5.846153846153846) internal successors, (304), 52 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 304 [2021-10-13 00:13:33,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:13:33,922 INFO L225 Difference]: With dead ends: 8907 [2021-10-13 00:13:33,922 INFO L226 Difference]: Without dead ends: 8906 [2021-10-13 00:13:33,924 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1159.7ms TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2021-10-13 00:13:33,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8906 states. [2021-10-13 00:13:34,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8906 to 4584. [2021-10-13 00:13:34,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4584 states, 4582 states have (on average 1.1632474901789611) internal successors, (5330), 4583 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:13:34,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4584 states to 4584 states and 5330 transitions. [2021-10-13 00:13:34,020 INFO L78 Accepts]: Start accepts. Automaton has 4584 states and 5330 transitions. Word has length 304 [2021-10-13 00:13:34,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:13:34,020 INFO L470 AbstractCegarLoop]: Abstraction has 4584 states and 5330 transitions. [2021-10-13 00:13:34,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 5.846153846153846) internal successors, (304), 52 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:13:34,021 INFO L276 IsEmpty]: Start isEmpty. Operand 4584 states and 5330 transitions. [2021-10-13 00:13:34,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2021-10-13 00:13:34,023 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:13:34,024 INFO L512 BasicCegarLoop]: trace histogram [51, 50, 50, 35, 35, 35, 16, 16, 16, 1, 1] [2021-10-13 00:13:34,060 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2021-10-13 00:13:34,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2021-10-13 00:13:34,224 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:13:34,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:13:34,225 INFO L82 PathProgramCache]: Analyzing trace with hash 255768502, now seen corresponding path program 25 times [2021-10-13 00:13:34,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:13:34,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768831724] [2021-10-13 00:13:34,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:13:34,225 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:13:34,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:13:34,794 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 2165 proven. 3640 refuted. 0 times theorem prover too weak. 675 trivial. 0 not checked. [2021-10-13 00:13:34,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:13:34,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768831724] [2021-10-13 00:13:34,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768831724] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:13:34,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359977093] [2021-10-13 00:13:34,795 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 00:13:34,795 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:13:34,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:13:34,796 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:13:34,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2021-10-13 00:13:38,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:13:38,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-13 00:13:38,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:13:39,588 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 2165 proven. 3640 refuted. 0 times theorem prover too weak. 675 trivial. 0 not checked. [2021-10-13 00:13:39,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359977093] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:13:39,589 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:13:39,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2021-10-13 00:13:39,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466921222] [2021-10-13 00:13:39,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-10-13 00:13:39,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:13:39,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-10-13 00:13:39,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 00:13:39,591 INFO L87 Difference]: Start difference. First operand 4584 states and 5330 transitions. Second operand has 38 states, 38 states have (on average 5.7894736842105265) internal successors, (220), 37 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) [2021-10-13 00:13:39,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:13:39,756 INFO L93 Difference]: Finished difference Result 8971 states and 10464 transitions. [2021-10-13 00:13:39,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-13 00:13:39,757 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.7894736842105265) internal successors, (220), 37 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) Word has length 306 [2021-10-13 00:13:39,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:13:39,761 INFO L225 Difference]: With dead ends: 8971 [2021-10-13 00:13:39,761 INFO L226 Difference]: Without dead ends: 4594 [2021-10-13 00:13:39,766 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 456.3ms TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 00:13:39,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4594 states. [2021-10-13 00:13:39,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4594 to 4590. [2021-10-13 00:13:39,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4590 states, 4588 states have (on average 1.163034001743679) internal successors, (5336), 4589 states have internal predecessors, (5336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:13:39,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4590 states to 4590 states and 5336 transitions. [2021-10-13 00:13:39,855 INFO L78 Accepts]: Start accepts. Automaton has 4590 states and 5336 transitions. Word has length 306 [2021-10-13 00:13:39,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:13:39,856 INFO L470 AbstractCegarLoop]: Abstraction has 4590 states and 5336 transitions. [2021-10-13 00:13:39,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 5.7894736842105265) internal successors, (220), 37 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) [2021-10-13 00:13:39,856 INFO L276 IsEmpty]: Start isEmpty. Operand 4590 states and 5336 transitions. [2021-10-13 00:13:39,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2021-10-13 00:13:39,859 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:13:39,859 INFO L512 BasicCegarLoop]: trace histogram [52, 52, 51, 51, 51, 51, 1, 1] [2021-10-13 00:13:39,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2021-10-13 00:13:40,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2021-10-13 00:13:40,060 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:13:40,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:13:40,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1780465114, now seen corresponding path program 50 times [2021-10-13 00:13:40,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:13:40,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337569992] [2021-10-13 00:13:40,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:13:40,061 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:13:40,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:13:41,309 INFO L134 CoverageAnalysis]: Checked inductivity of 7803 backedges. 0 proven. 7803 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:13:41,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:13:41,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337569992] [2021-10-13 00:13:41,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337569992] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:13:41,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850831328] [2021-10-13 00:13:41,309 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:13:41,310 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:13:41,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:13:41,310 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:13:41,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2021-10-13 00:13:45,504 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:13:45,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:13:45,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 53 conjunts are in the unsatisfiable core [2021-10-13 00:13:45,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:13:46,346 INFO L134 CoverageAnalysis]: Checked inductivity of 7803 backedges. 0 proven. 7803 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:13:46,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850831328] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:13:46,346 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:13:46,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2021-10-13 00:13:46,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189610251] [2021-10-13 00:13:46,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2021-10-13 00:13:46,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:13:46,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-10-13 00:13:46,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2021-10-13 00:13:46,348 INFO L87 Difference]: Start difference. First operand 4590 states and 5336 transitions. Second operand has 54 states, 53 states have (on average 5.849056603773585) internal successors, (310), 53 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:13:46,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:13:46,851 INFO L93 Difference]: Finished difference Result 9113 states and 10620 transitions. [2021-10-13 00:13:46,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-13 00:13:46,854 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 5.849056603773585) internal successors, (310), 53 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2021-10-13 00:13:46,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:13:46,862 INFO L225 Difference]: With dead ends: 9113 [2021-10-13 00:13:46,862 INFO L226 Difference]: Without dead ends: 9112 [2021-10-13 00:13:46,864 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1084.7ms TimeCoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2021-10-13 00:13:46,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9112 states. [2021-10-13 00:13:46,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9112 to 4689. [2021-10-13 00:13:46,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4689 states, 4687 states have (on average 1.1632174098570514) internal successors, (5452), 4688 states have internal predecessors, (5452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:13:46,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4689 states to 4689 states and 5452 transitions. [2021-10-13 00:13:46,953 INFO L78 Accepts]: Start accepts. Automaton has 4689 states and 5452 transitions. Word has length 310 [2021-10-13 00:13:46,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:13:46,953 INFO L470 AbstractCegarLoop]: Abstraction has 4689 states and 5452 transitions. [2021-10-13 00:13:46,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 5.849056603773585) internal successors, (310), 53 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:13:46,953 INFO L276 IsEmpty]: Start isEmpty. Operand 4689 states and 5452 transitions. [2021-10-13 00:13:46,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2021-10-13 00:13:46,956 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:13:46,957 INFO L512 BasicCegarLoop]: trace histogram [52, 51, 51, 36, 36, 36, 16, 16, 16, 1, 1] [2021-10-13 00:13:46,997 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2021-10-13 00:13:47,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:13:47,157 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:13:47,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:13:47,158 INFO L82 PathProgramCache]: Analyzing trace with hash 122014255, now seen corresponding path program 26 times [2021-10-13 00:13:47,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:13:47,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984611110] [2021-10-13 00:13:47,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:13:47,159 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:13:47,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:13:47,843 INFO L134 CoverageAnalysis]: Checked inductivity of 6753 backedges. 2226 proven. 3852 refuted. 0 times theorem prover too weak. 675 trivial. 0 not checked. [2021-10-13 00:13:47,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:13:47,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984611110] [2021-10-13 00:13:47,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984611110] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:13:47,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456262154] [2021-10-13 00:13:47,844 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:13:47,844 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:13:47,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:13:47,845 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:13:47,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2021-10-13 00:13:52,065 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:13:52,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:13:52,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-13 00:13:52,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:13:52,820 INFO L134 CoverageAnalysis]: Checked inductivity of 6753 backedges. 2226 proven. 3852 refuted. 0 times theorem prover too weak. 675 trivial. 0 not checked. [2021-10-13 00:13:52,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456262154] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:13:52,821 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:13:52,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2021-10-13 00:13:52,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920505474] [2021-10-13 00:13:52,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-10-13 00:13:52,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:13:52,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-10-13 00:13:52,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 00:13:52,823 INFO L87 Difference]: Start difference. First operand 4689 states and 5452 transitions. Second operand has 39 states, 39 states have (on average 5.794871794871795) internal successors, (226), 38 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:13:52,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:13:52,975 INFO L93 Difference]: Finished difference Result 9175 states and 10702 transitions. [2021-10-13 00:13:52,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-13 00:13:52,976 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.794871794871795) internal successors, (226), 38 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 312 [2021-10-13 00:13:52,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:13:52,980 INFO L225 Difference]: With dead ends: 9175 [2021-10-13 00:13:52,980 INFO L226 Difference]: Without dead ends: 4699 [2021-10-13 00:13:52,985 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 549.9ms TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 00:13:52,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4699 states. [2021-10-13 00:13:53,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4699 to 4695. [2021-10-13 00:13:53,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4695 states, 4693 states have (on average 1.1630087364159387) internal successors, (5458), 4694 states have internal predecessors, (5458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:13:53,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4695 states to 4695 states and 5458 transitions. [2021-10-13 00:13:53,077 INFO L78 Accepts]: Start accepts. Automaton has 4695 states and 5458 transitions. Word has length 312 [2021-10-13 00:13:53,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:13:53,077 INFO L470 AbstractCegarLoop]: Abstraction has 4695 states and 5458 transitions. [2021-10-13 00:13:53,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 5.794871794871795) internal successors, (226), 38 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:13:53,078 INFO L276 IsEmpty]: Start isEmpty. Operand 4695 states and 5458 transitions. [2021-10-13 00:13:53,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2021-10-13 00:13:53,082 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:13:53,082 INFO L512 BasicCegarLoop]: trace histogram [53, 53, 52, 52, 52, 52, 1, 1] [2021-10-13 00:13:53,134 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2021-10-13 00:13:53,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:13:53,309 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:13:53,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:13:53,309 INFO L82 PathProgramCache]: Analyzing trace with hash 917991455, now seen corresponding path program 51 times [2021-10-13 00:13:53,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:13:53,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101986524] [2021-10-13 00:13:53,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:13:53,309 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:13:53,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:13:54,642 INFO L134 CoverageAnalysis]: Checked inductivity of 8112 backedges. 0 proven. 8112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:13:54,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:13:54,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101986524] [2021-10-13 00:13:54,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101986524] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:13:54,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98331410] [2021-10-13 00:13:54,657 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:13:54,657 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:13:54,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:13:54,673 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:13:54,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2021-10-13 00:13:58,925 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 53 check-sat command(s) [2021-10-13 00:13:58,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:13:58,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 54 conjunts are in the unsatisfiable core [2021-10-13 00:13:58,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:13:59,869 INFO L134 CoverageAnalysis]: Checked inductivity of 8112 backedges. 0 proven. 8112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:13:59,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98331410] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:13:59,870 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:13:59,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2021-10-13 00:13:59,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758392739] [2021-10-13 00:13:59,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2021-10-13 00:13:59,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:13:59,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-10-13 00:13:59,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2021-10-13 00:13:59,873 INFO L87 Difference]: Start difference. First operand 4695 states and 5458 transitions. Second operand has 55 states, 54 states have (on average 5.851851851851852) internal successors, (316), 54 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:14:00,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:14:00,432 INFO L93 Difference]: Finished difference Result 9319 states and 10860 transitions. [2021-10-13 00:14:00,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-10-13 00:14:00,432 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 5.851851851851852) internal successors, (316), 54 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 316 [2021-10-13 00:14:00,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:14:00,441 INFO L225 Difference]: With dead ends: 9319 [2021-10-13 00:14:00,441 INFO L226 Difference]: Without dead ends: 9318 [2021-10-13 00:14:00,444 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1176.7ms TimeCoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2021-10-13 00:14:00,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9318 states. [2021-10-13 00:14:00,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9318 to 4794. [2021-10-13 00:14:00,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4794 states, 4792 states have (on average 1.1631886477462436) internal successors, (5574), 4793 states have internal predecessors, (5574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:14:00,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4794 states to 4794 states and 5574 transitions. [2021-10-13 00:14:00,539 INFO L78 Accepts]: Start accepts. Automaton has 4794 states and 5574 transitions. Word has length 316 [2021-10-13 00:14:00,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:14:00,540 INFO L470 AbstractCegarLoop]: Abstraction has 4794 states and 5574 transitions. [2021-10-13 00:14:00,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 5.851851851851852) internal successors, (316), 54 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:14:00,540 INFO L276 IsEmpty]: Start isEmpty. Operand 4794 states and 5574 transitions. [2021-10-13 00:14:00,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2021-10-13 00:14:00,543 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:14:00,544 INFO L512 BasicCegarLoop]: trace histogram [53, 52, 52, 37, 37, 37, 16, 16, 16, 1, 1] [2021-10-13 00:14:00,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2021-10-13 00:14:00,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:14:00,749 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:14:00,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:14:00,749 INFO L82 PathProgramCache]: Analyzing trace with hash -821469720, now seen corresponding path program 27 times [2021-10-13 00:14:00,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:14:00,749 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246676943] [2021-10-13 00:14:00,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:14:00,750 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:14:00,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:14:01,556 INFO L134 CoverageAnalysis]: Checked inductivity of 7032 backedges. 2287 proven. 4070 refuted. 0 times theorem prover too weak. 675 trivial. 0 not checked. [2021-10-13 00:14:01,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:14:01,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246676943] [2021-10-13 00:14:01,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246676943] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:14:01,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389518188] [2021-10-13 00:14:01,556 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:14:01,556 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:14:01,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:14:01,557 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:14:01,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2021-10-13 00:14:05,296 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2021-10-13 00:14:05,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:14:05,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 00:14:05,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:14:06,460 INFO L134 CoverageAnalysis]: Checked inductivity of 7032 backedges. 2589 proven. 803 refuted. 0 times theorem prover too weak. 3640 trivial. 0 not checked. [2021-10-13 00:14:06,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389518188] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:14:06,460 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:14:06,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 19] total 58 [2021-10-13 00:14:06,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571162368] [2021-10-13 00:14:06,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-10-13 00:14:06,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:14:06,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-10-13 00:14:06,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2021-10-13 00:14:06,462 INFO L87 Difference]: Start difference. First operand 4794 states and 5574 transitions. Second operand has 58 states, 58 states have (on average 5.948275862068965) internal successors, (345), 58 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:14:06,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:14:06,816 INFO L93 Difference]: Finished difference Result 9861 states and 11571 transitions. [2021-10-13 00:14:06,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-10-13 00:14:06,817 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 5.948275862068965) internal successors, (345), 58 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 318 [2021-10-13 00:14:06,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:14:06,821 INFO L225 Difference]: With dead ends: 9861 [2021-10-13 00:14:06,821 INFO L226 Difference]: Without dead ends: 5286 [2021-10-13 00:14:06,824 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1157.2ms TimeCoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2021-10-13 00:14:06,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5286 states. [2021-10-13 00:14:06,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5286 to 5250. [2021-10-13 00:14:06,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5250 states, 5248 states have (on average 1.162919207317073) internal successors, (6103), 5249 states have internal predecessors, (6103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:14:06,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5250 states to 5250 states and 6103 transitions. [2021-10-13 00:14:06,908 INFO L78 Accepts]: Start accepts. Automaton has 5250 states and 6103 transitions. Word has length 318 [2021-10-13 00:14:06,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:14:06,909 INFO L470 AbstractCegarLoop]: Abstraction has 5250 states and 6103 transitions. [2021-10-13 00:14:06,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 5.948275862068965) internal successors, (345), 58 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:14:06,909 INFO L276 IsEmpty]: Start isEmpty. Operand 5250 states and 6103 transitions. [2021-10-13 00:14:06,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2021-10-13 00:14:06,911 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:14:06,911 INFO L512 BasicCegarLoop]: trace histogram [54, 54, 53, 53, 53, 53, 1, 1] [2021-10-13 00:14:06,944 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2021-10-13 00:14:07,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable83 [2021-10-13 00:14:07,112 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:14:07,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:14:07,112 INFO L82 PathProgramCache]: Analyzing trace with hash -2035777704, now seen corresponding path program 52 times [2021-10-13 00:14:07,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:14:07,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437983157] [2021-10-13 00:14:07,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:14:07,112 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:14:07,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:14:08,222 INFO L134 CoverageAnalysis]: Checked inductivity of 8427 backedges. 0 proven. 8427 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:14:08,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:14:08,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437983157] [2021-10-13 00:14:08,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437983157] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:14:08,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197470061] [2021-10-13 00:14:08,223 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 00:14:08,223 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:14:08,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:14:08,224 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:14:08,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2021-10-13 00:14:12,017 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 00:14:12,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:14:12,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 53 conjunts are in the unsatisfiable core [2021-10-13 00:14:12,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:14:15,032 INFO L134 CoverageAnalysis]: Checked inductivity of 8427 backedges. 8419 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-13 00:14:15,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197470061] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:14:15,032 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:14:15,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [54] total 107 [2021-10-13 00:14:15,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106503839] [2021-10-13 00:14:15,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2021-10-13 00:14:15,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:14:15,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-10-13 00:14:15,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2970, Invalid=8586, Unknown=0, NotChecked=0, Total=11556 [2021-10-13 00:14:15,035 INFO L87 Difference]: Start difference. First operand 5250 states and 6103 transitions. Second operand has 54 states, 54 states have (on average 5.851851851851852) internal successors, (316), 53 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:14:15,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:14:15,438 INFO L93 Difference]: Finished difference Result 6823 states and 7965 transitions. [2021-10-13 00:14:15,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-13 00:14:15,438 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 5.851851851851852) internal successors, (316), 53 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 322 [2021-10-13 00:14:15,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:14:15,440 INFO L225 Difference]: With dead ends: 6823 [2021-10-13 00:14:15,440 INFO L226 Difference]: Without dead ends: 1804 [2021-10-13 00:14:15,445 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2756 ImplicationChecksByTransitivity, 3086.5ms TimeCoverageRelationStatistics Valid=2970, Invalid=8586, Unknown=0, NotChecked=0, Total=11556 [2021-10-13 00:14:15,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1804 states. [2021-10-13 00:14:15,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1804 to 415. [2021-10-13 00:14:15,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 414 states have (on average 1.0314009661835748) internal successors, (427), 414 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:14:15,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 427 transitions. [2021-10-13 00:14:15,462 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 427 transitions. Word has length 322 [2021-10-13 00:14:15,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:14:15,463 INFO L470 AbstractCegarLoop]: Abstraction has 415 states and 427 transitions. [2021-10-13 00:14:15,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 5.851851851851852) internal successors, (316), 53 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:14:15,463 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 427 transitions. [2021-10-13 00:14:15,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2021-10-13 00:14:15,466 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:14:15,466 INFO L512 BasicCegarLoop]: trace histogram [57, 56, 56, 39, 39, 39, 18, 18, 18, 1, 1] [2021-10-13 00:14:15,514 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2021-10-13 00:14:15,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:14:15,692 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:14:15,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:14:15,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1246320448, now seen corresponding path program 28 times [2021-10-13 00:14:15,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:14:15,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484880055] [2021-10-13 00:14:15,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:14:15,693 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:14:15,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:14:16,451 INFO L134 CoverageAnalysis]: Checked inductivity of 8116 backedges. 2725 proven. 4524 refuted. 0 times theorem prover too weak. 867 trivial. 0 not checked. [2021-10-13 00:14:16,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:14:16,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484880055] [2021-10-13 00:14:16,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484880055] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:14:16,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804062670] [2021-10-13 00:14:16,451 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 00:14:16,451 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:14:16,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:14:16,452 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:14:16,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2021-10-13 00:14:20,651 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 00:14:20,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:14:20,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 41 conjunts are in the unsatisfiable core [2021-10-13 00:14:20,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:14:21,571 INFO L134 CoverageAnalysis]: Checked inductivity of 8116 backedges. 2725 proven. 4524 refuted. 0 times theorem prover too weak. 867 trivial. 0 not checked. [2021-10-13 00:14:21,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804062670] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:14:21,571 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:14:21,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2021-10-13 00:14:21,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682009573] [2021-10-13 00:14:21,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-10-13 00:14:21,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:14:21,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-10-13 00:14:21,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2021-10-13 00:14:21,573 INFO L87 Difference]: Start difference. First operand 415 states and 427 transitions. Second operand has 42 states, 42 states have (on average 5.809523809523809) internal successors, (244), 41 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:14:21,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:14:21,716 INFO L93 Difference]: Finished difference Result 521 states and 533 transitions. [2021-10-13 00:14:21,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-13 00:14:21,717 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 5.809523809523809) internal successors, (244), 41 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 342 [2021-10-13 00:14:21,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:14:21,718 INFO L225 Difference]: With dead ends: 521 [2021-10-13 00:14:21,718 INFO L226 Difference]: Without dead ends: 415 [2021-10-13 00:14:21,719 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 558.0ms TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2021-10-13 00:14:21,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2021-10-13 00:14:21,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 415. [2021-10-13 00:14:21,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 414 states have (on average 1.0289855072463767) internal successors, (426), 414 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:14:21,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 426 transitions. [2021-10-13 00:14:21,732 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 426 transitions. Word has length 342 [2021-10-13 00:14:21,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:14:21,733 INFO L470 AbstractCegarLoop]: Abstraction has 415 states and 426 transitions. [2021-10-13 00:14:21,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 5.809523809523809) internal successors, (244), 41 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:14:21,733 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 426 transitions. [2021-10-13 00:14:21,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2021-10-13 00:14:21,736 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:14:21,736 INFO L512 BasicCegarLoop]: trace histogram [58, 57, 57, 40, 40, 40, 18, 18, 18, 1, 1] [2021-10-13 00:14:21,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2021-10-13 00:14:21,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:14:21,964 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:14:21,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:14:21,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1922059591, now seen corresponding path program 29 times [2021-10-13 00:14:21,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:14:21,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98493517] [2021-10-13 00:14:21,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:14:21,965 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:14:22,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:14:22,729 INFO L134 CoverageAnalysis]: Checked inductivity of 8421 backedges. 2794 proven. 4760 refuted. 0 times theorem prover too weak. 867 trivial. 0 not checked. [2021-10-13 00:14:22,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:14:22,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98493517] [2021-10-13 00:14:22,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98493517] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:14:22,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459852642] [2021-10-13 00:14:22,730 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 00:14:22,730 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:14:22,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:14:22,733 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:14:22,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2021-10-13 00:14:27,052 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2021-10-13 00:14:27,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:14:27,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 42 conjunts are in the unsatisfiable core [2021-10-13 00:14:27,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:14:27,862 INFO L134 CoverageAnalysis]: Checked inductivity of 8421 backedges. 2794 proven. 4760 refuted. 0 times theorem prover too weak. 867 trivial. 0 not checked. [2021-10-13 00:14:27,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459852642] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:14:27,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:14:27,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2021-10-13 00:14:27,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876343627] [2021-10-13 00:14:27,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-10-13 00:14:27,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:14:27,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-10-13 00:14:27,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2021-10-13 00:14:27,865 INFO L87 Difference]: Start difference. First operand 415 states and 426 transitions. Second operand has 43 states, 43 states have (on average 5.813953488372093) internal successors, (250), 42 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:14:28,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:14:28,009 INFO L93 Difference]: Finished difference Result 521 states and 532 transitions. [2021-10-13 00:14:28,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-13 00:14:28,009 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 5.813953488372093) internal successors, (250), 42 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 348 [2021-10-13 00:14:28,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:14:28,010 INFO L225 Difference]: With dead ends: 521 [2021-10-13 00:14:28,010 INFO L226 Difference]: Without dead ends: 415 [2021-10-13 00:14:28,010 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 627.9ms TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2021-10-13 00:14:28,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2021-10-13 00:14:28,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 415. [2021-10-13 00:14:28,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 414 states have (on average 1.0265700483091786) internal successors, (425), 414 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:14:28,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 425 transitions. [2021-10-13 00:14:28,018 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 425 transitions. Word has length 348 [2021-10-13 00:14:28,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:14:28,018 INFO L470 AbstractCegarLoop]: Abstraction has 415 states and 425 transitions. [2021-10-13 00:14:28,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 5.813953488372093) internal successors, (250), 42 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:14:28,019 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 425 transitions. [2021-10-13 00:14:28,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2021-10-13 00:14:28,020 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:14:28,020 INFO L512 BasicCegarLoop]: trace histogram [59, 58, 58, 41, 41, 41, 18, 18, 18, 1, 1] [2021-10-13 00:14:28,060 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2021-10-13 00:14:28,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,83 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:14:28,221 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:14:28,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:14:28,221 INFO L82 PathProgramCache]: Analyzing trace with hash -2106745358, now seen corresponding path program 30 times [2021-10-13 00:14:28,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:14:28,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820538201] [2021-10-13 00:14:28,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:14:28,222 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:14:28,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:14:29,110 INFO L134 CoverageAnalysis]: Checked inductivity of 8732 backedges. 2863 proven. 5002 refuted. 0 times theorem prover too weak. 867 trivial. 0 not checked. [2021-10-13 00:14:29,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:14:29,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820538201] [2021-10-13 00:14:29,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820538201] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:14:29,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062879208] [2021-10-13 00:14:29,110 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 00:14:29,110 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:14:29,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:14:29,111 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:14:29,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2021-10-13 00:14:33,547 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2021-10-13 00:14:33,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:14:33,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 00:14:33,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:14:35,139 INFO L134 CoverageAnalysis]: Checked inductivity of 8732 backedges. 3197 proven. 1011 refuted. 0 times theorem prover too weak. 4524 trivial. 0 not checked. [2021-10-13 00:14:35,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062879208] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:14:35,139 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:14:35,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 21] total 64 [2021-10-13 00:14:35,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400003964] [2021-10-13 00:14:35,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-10-13 00:14:35,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:14:35,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-10-13 00:14:35,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2021-10-13 00:14:35,141 INFO L87 Difference]: Start difference. First operand 415 states and 425 transitions. Second operand has 64 states, 64 states have (on average 5.953125) internal successors, (381), 64 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:14:35,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:14:35,453 INFO L93 Difference]: Finished difference Result 534 states and 546 transitions. [2021-10-13 00:14:35,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-10-13 00:14:35,454 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 5.953125) internal successors, (381), 64 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 354 [2021-10-13 00:14:35,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:14:35,455 INFO L225 Difference]: With dead ends: 534 [2021-10-13 00:14:35,455 INFO L226 Difference]: Without dead ends: 428 [2021-10-13 00:14:35,455 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1426.4ms TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2021-10-13 00:14:35,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2021-10-13 00:14:35,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 427. [2021-10-13 00:14:35,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 426 states have (on average 1.0211267605633803) internal successors, (435), 426 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:14:35,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 435 transitions. [2021-10-13 00:14:35,464 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 435 transitions. Word has length 354 [2021-10-13 00:14:35,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:14:35,464 INFO L470 AbstractCegarLoop]: Abstraction has 427 states and 435 transitions. [2021-10-13 00:14:35,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 5.953125) internal successors, (381), 64 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:14:35,464 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 435 transitions. [2021-10-13 00:14:35,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2021-10-13 00:14:35,466 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:14:35,466 INFO L512 BasicCegarLoop]: trace histogram [63, 62, 62, 43, 43, 43, 20, 20, 20, 1, 1] [2021-10-13 00:14:35,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2021-10-13 00:14:35,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2021-10-13 00:14:35,667 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:14:35,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:14:35,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1988655306, now seen corresponding path program 31 times [2021-10-13 00:14:35,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:14:35,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826374696] [2021-10-13 00:14:35,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:14:35,668 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:14:35,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:14:36,679 INFO L134 CoverageAnalysis]: Checked inductivity of 9936 backedges. 3349 proven. 5504 refuted. 0 times theorem prover too weak. 1083 trivial. 0 not checked. [2021-10-13 00:14:36,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:14:36,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826374696] [2021-10-13 00:14:36,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826374696] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:14:36,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906376307] [2021-10-13 00:14:36,680 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 00:14:36,680 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:14:36,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:14:36,682 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:14:36,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2021-10-13 00:14:41,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:14:41,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 45 conjunts are in the unsatisfiable core [2021-10-13 00:14:41,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:14:42,007 INFO L134 CoverageAnalysis]: Checked inductivity of 9936 backedges. 3349 proven. 5504 refuted. 0 times theorem prover too weak. 1083 trivial. 0 not checked. [2021-10-13 00:14:42,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906376307] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:14:42,007 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:14:42,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2021-10-13 00:14:42,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528007612] [2021-10-13 00:14:42,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-10-13 00:14:42,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:14:42,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-10-13 00:14:42,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 00:14:42,009 INFO L87 Difference]: Start difference. First operand 427 states and 435 transitions. Second operand has 46 states, 46 states have (on average 5.826086956521739) internal successors, (268), 45 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:14:42,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:14:42,174 INFO L93 Difference]: Finished difference Result 545 states and 553 transitions. [2021-10-13 00:14:42,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-13 00:14:42,175 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 5.826086956521739) internal successors, (268), 45 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 378 [2021-10-13 00:14:42,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:14:42,176 INFO L225 Difference]: With dead ends: 545 [2021-10-13 00:14:42,176 INFO L226 Difference]: Without dead ends: 427 [2021-10-13 00:14:42,177 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 806.1ms TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 00:14:42,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2021-10-13 00:14:42,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2021-10-13 00:14:42,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 426 states have (on average 1.0187793427230047) internal successors, (434), 426 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:14:42,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 434 transitions. [2021-10-13 00:14:42,185 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 434 transitions. Word has length 378 [2021-10-13 00:14:42,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:14:42,185 INFO L470 AbstractCegarLoop]: Abstraction has 427 states and 434 transitions. [2021-10-13 00:14:42,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 5.826086956521739) internal successors, (268), 45 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:14:42,185 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 434 transitions. [2021-10-13 00:14:42,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2021-10-13 00:14:42,187 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:14:42,187 INFO L512 BasicCegarLoop]: trace histogram [64, 63, 63, 44, 44, 44, 20, 20, 20, 1, 1] [2021-10-13 00:14:42,226 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2021-10-13 00:14:42,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2021-10-13 00:14:42,388 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:14:42,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:14:42,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1435649469, now seen corresponding path program 32 times [2021-10-13 00:14:42,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:14:42,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054194480] [2021-10-13 00:14:42,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:14:42,389 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:14:42,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:14:43,407 INFO L134 CoverageAnalysis]: Checked inductivity of 10273 backedges. 3426 proven. 5764 refuted. 0 times theorem prover too weak. 1083 trivial. 0 not checked. [2021-10-13 00:14:43,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:14:43,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054194480] [2021-10-13 00:14:43,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054194480] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:14:43,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111885002] [2021-10-13 00:14:43,407 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:14:43,407 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:14:43,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:14:43,408 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:14:43,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2021-10-13 00:14:48,142 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:14:48,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:14:48,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 46 conjunts are in the unsatisfiable core [2021-10-13 00:14:48,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:14:49,104 INFO L134 CoverageAnalysis]: Checked inductivity of 10273 backedges. 3426 proven. 5764 refuted. 0 times theorem prover too weak. 1083 trivial. 0 not checked. [2021-10-13 00:14:49,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111885002] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:14:49,105 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:14:49,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2021-10-13 00:14:49,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643590425] [2021-10-13 00:14:49,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-10-13 00:14:49,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:14:49,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-10-13 00:14:49,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2021-10-13 00:14:49,106 INFO L87 Difference]: Start difference. First operand 427 states and 434 transitions. Second operand has 47 states, 47 states have (on average 5.829787234042553) internal successors, (274), 46 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:14:49,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:14:49,275 INFO L93 Difference]: Finished difference Result 545 states and 552 transitions. [2021-10-13 00:14:49,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-13 00:14:49,276 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 5.829787234042553) internal successors, (274), 46 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 384 [2021-10-13 00:14:49,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:14:49,277 INFO L225 Difference]: With dead ends: 545 [2021-10-13 00:14:49,277 INFO L226 Difference]: Without dead ends: 427 [2021-10-13 00:14:49,278 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 384 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 760.5ms TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2021-10-13 00:14:49,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2021-10-13 00:14:49,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2021-10-13 00:14:49,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 426 states have (on average 1.016431924882629) internal successors, (433), 426 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:14:49,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 433 transitions. [2021-10-13 00:14:49,291 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 433 transitions. Word has length 384 [2021-10-13 00:14:49,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:14:49,291 INFO L470 AbstractCegarLoop]: Abstraction has 427 states and 433 transitions. [2021-10-13 00:14:49,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 5.829787234042553) internal successors, (274), 46 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:14:49,292 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 433 transitions. [2021-10-13 00:14:49,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2021-10-13 00:14:49,294 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:14:49,295 INFO L512 BasicCegarLoop]: trace histogram [65, 64, 64, 45, 45, 45, 20, 20, 20, 1, 1] [2021-10-13 00:14:49,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2021-10-13 00:14:49,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,86 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:14:49,520 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:14:49,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:14:49,521 INFO L82 PathProgramCache]: Analyzing trace with hash 342899964, now seen corresponding path program 33 times [2021-10-13 00:14:49,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:14:49,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447243625] [2021-10-13 00:14:49,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:14:49,521 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:14:49,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:14:50,537 INFO L134 CoverageAnalysis]: Checked inductivity of 10616 backedges. 3503 proven. 6030 refuted. 0 times theorem prover too weak. 1083 trivial. 0 not checked. [2021-10-13 00:14:50,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:14:50,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447243625] [2021-10-13 00:14:50,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447243625] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:14:50,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080717111] [2021-10-13 00:14:50,538 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:14:50,538 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:14:50,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:14:50,539 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:14:50,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2021-10-13 00:14:55,153 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2021-10-13 00:14:55,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:14:55,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 00:14:55,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:14:56,863 INFO L134 CoverageAnalysis]: Checked inductivity of 10616 backedges. 3869 proven. 1243 refuted. 0 times theorem prover too weak. 5504 trivial. 0 not checked. [2021-10-13 00:14:56,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080717111] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:14:56,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:14:56,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 23] total 70 [2021-10-13 00:14:56,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755324283] [2021-10-13 00:14:56,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2021-10-13 00:14:56,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:14:56,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-10-13 00:14:56,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2021-10-13 00:14:56,865 INFO L87 Difference]: Start difference. First operand 427 states and 433 transitions. Second operand has 70 states, 70 states have (on average 5.957142857142857) internal successors, (417), 70 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:14:57,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:14:57,219 INFO L93 Difference]: Finished difference Result 558 states and 566 transitions. [2021-10-13 00:14:57,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-10-13 00:14:57,219 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 5.957142857142857) internal successors, (417), 70 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 390 [2021-10-13 00:14:57,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:14:57,220 INFO L225 Difference]: With dead ends: 558 [2021-10-13 00:14:57,220 INFO L226 Difference]: Without dead ends: 440 [2021-10-13 00:14:57,220 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1678.9ms TimeCoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2021-10-13 00:14:57,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-10-13 00:14:57,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 439. [2021-10-13 00:14:57,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 438 states have (on average 1.0114155251141552) internal successors, (443), 438 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:14:57,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 443 transitions. [2021-10-13 00:14:57,227 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 443 transitions. Word has length 390 [2021-10-13 00:14:57,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:14:57,227 INFO L470 AbstractCegarLoop]: Abstraction has 439 states and 443 transitions. [2021-10-13 00:14:57,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 5.957142857142857) internal successors, (417), 70 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:14:57,228 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 443 transitions. [2021-10-13 00:14:57,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2021-10-13 00:14:57,229 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:14:57,229 INFO L512 BasicCegarLoop]: trace histogram [69, 68, 68, 47, 47, 47, 22, 22, 22, 1, 1] [2021-10-13 00:14:57,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2021-10-13 00:14:57,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,87 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:14:57,430 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:14:57,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:14:57,430 INFO L82 PathProgramCache]: Analyzing trace with hash 388409300, now seen corresponding path program 34 times [2021-10-13 00:14:57,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:14:57,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361204424] [2021-10-13 00:14:57,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:14:57,430 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:14:57,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:14:58,481 INFO L134 CoverageAnalysis]: Checked inductivity of 11940 backedges. 4037 proven. 6580 refuted. 0 times theorem prover too weak. 1323 trivial. 0 not checked. [2021-10-13 00:14:58,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:14:58,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361204424] [2021-10-13 00:14:58,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361204424] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:14:58,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722100838] [2021-10-13 00:14:58,481 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 00:14:58,481 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:14:58,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:14:58,482 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:14:58,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2021-10-13 00:15:03,137 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 00:15:03,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:15:03,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 49 conjunts are in the unsatisfiable core [2021-10-13 00:15:03,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:15:04,091 INFO L134 CoverageAnalysis]: Checked inductivity of 11940 backedges. 4037 proven. 6580 refuted. 0 times theorem prover too weak. 1323 trivial. 0 not checked. [2021-10-13 00:15:04,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722100838] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:15:04,092 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:15:04,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2021-10-13 00:15:04,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689871917] [2021-10-13 00:15:04,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-10-13 00:15:04,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:15:04,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-10-13 00:15:04,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2021-10-13 00:15:04,094 INFO L87 Difference]: Start difference. First operand 439 states and 443 transitions. Second operand has 50 states, 50 states have (on average 5.84) internal successors, (292), 49 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:15:04,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:15:04,266 INFO L93 Difference]: Finished difference Result 569 states and 573 transitions. [2021-10-13 00:15:04,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-13 00:15:04,266 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 5.84) internal successors, (292), 49 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 414 [2021-10-13 00:15:04,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:15:04,267 INFO L225 Difference]: With dead ends: 569 [2021-10-13 00:15:04,267 INFO L226 Difference]: Without dead ends: 439 [2021-10-13 00:15:04,268 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 414 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 847.4ms TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2021-10-13 00:15:04,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2021-10-13 00:15:04,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 439. [2021-10-13 00:15:04,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 438 states have (on average 1.0091324200913243) internal successors, (442), 438 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:15:04,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 442 transitions. [2021-10-13 00:15:04,308 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 442 transitions. Word has length 414 [2021-10-13 00:15:04,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:15:04,308 INFO L470 AbstractCegarLoop]: Abstraction has 439 states and 442 transitions. [2021-10-13 00:15:04,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 5.84) internal successors, (292), 49 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:15:04,308 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 442 transitions. [2021-10-13 00:15:04,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2021-10-13 00:15:04,309 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:15:04,310 INFO L512 BasicCegarLoop]: trace histogram [70, 69, 69, 48, 48, 48, 22, 22, 22, 1, 1] [2021-10-13 00:15:04,342 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2021-10-13 00:15:04,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,88 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:15:04,510 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:15:04,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:15:04,510 INFO L82 PathProgramCache]: Analyzing trace with hash -476946227, now seen corresponding path program 35 times [2021-10-13 00:15:04,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:15:04,511 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527106620] [2021-10-13 00:15:04,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:15:04,511 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:15:04,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:15:05,451 INFO L134 CoverageAnalysis]: Checked inductivity of 12309 backedges. 4122 proven. 6864 refuted. 0 times theorem prover too weak. 1323 trivial. 0 not checked. [2021-10-13 00:15:05,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:15:05,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527106620] [2021-10-13 00:15:05,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527106620] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:15:05,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473401214] [2021-10-13 00:15:05,451 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 00:15:05,451 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:15:05,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:15:05,452 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:15:05,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2021-10-13 00:15:10,273 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 50 check-sat command(s) [2021-10-13 00:15:10,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:15:10,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 703 conjuncts, 50 conjunts are in the unsatisfiable core [2021-10-13 00:15:10,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:15:11,242 INFO L134 CoverageAnalysis]: Checked inductivity of 12309 backedges. 4122 proven. 6864 refuted. 0 times theorem prover too weak. 1323 trivial. 0 not checked. [2021-10-13 00:15:11,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473401214] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:15:11,242 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:15:11,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2021-10-13 00:15:11,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414753738] [2021-10-13 00:15:11,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-10-13 00:15:11,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:15:11,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-10-13 00:15:11,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2021-10-13 00:15:11,244 INFO L87 Difference]: Start difference. First operand 439 states and 442 transitions. Second operand has 51 states, 51 states have (on average 5.8431372549019605) internal successors, (298), 50 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:15:11,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:15:11,402 INFO L93 Difference]: Finished difference Result 569 states and 572 transitions. [2021-10-13 00:15:11,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-10-13 00:15:11,402 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 5.8431372549019605) internal successors, (298), 50 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 420 [2021-10-13 00:15:11,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:15:11,403 INFO L225 Difference]: With dead ends: 569 [2021-10-13 00:15:11,403 INFO L226 Difference]: Without dead ends: 439 [2021-10-13 00:15:11,403 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 791.6ms TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2021-10-13 00:15:11,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2021-10-13 00:15:11,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 439. [2021-10-13 00:15:11,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 438 states have (on average 1.0068493150684932) internal successors, (441), 438 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:15:11,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 441 transitions. [2021-10-13 00:15:11,411 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 441 transitions. Word has length 420 [2021-10-13 00:15:11,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:15:11,411 INFO L470 AbstractCegarLoop]: Abstraction has 439 states and 441 transitions. [2021-10-13 00:15:11,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 5.8431372549019605) internal successors, (298), 50 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:15:11,411 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 441 transitions. [2021-10-13 00:15:11,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2021-10-13 00:15:11,412 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:15:11,413 INFO L512 BasicCegarLoop]: trace histogram [71, 70, 70, 49, 49, 49, 22, 22, 22, 1, 1] [2021-10-13 00:15:11,450 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2021-10-13 00:15:11,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,89 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:15:11,613 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:15:11,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:15:11,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1648605958, now seen corresponding path program 36 times [2021-10-13 00:15:11,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:15:11,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497340343] [2021-10-13 00:15:11,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:15:11,614 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:15:11,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:15:12,703 INFO L134 CoverageAnalysis]: Checked inductivity of 12684 backedges. 4207 proven. 7154 refuted. 0 times theorem prover too weak. 1323 trivial. 0 not checked. [2021-10-13 00:15:12,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:15:12,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497340343] [2021-10-13 00:15:12,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497340343] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:15:12,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536295438] [2021-10-13 00:15:12,704 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 00:15:12,704 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:15:12,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:15:12,705 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:15:12,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2021-10-13 00:15:17,538 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 45 check-sat command(s) [2021-10-13 00:15:17,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:15:17,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 00:15:17,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:15:19,341 INFO L134 CoverageAnalysis]: Checked inductivity of 12684 backedges. 4605 proven. 1499 refuted. 0 times theorem prover too weak. 6580 trivial. 0 not checked. [2021-10-13 00:15:19,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536295438] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:15:19,342 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:15:19,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 25] total 76 [2021-10-13 00:15:19,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294865380] [2021-10-13 00:15:19,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2021-10-13 00:15:19,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:15:19,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-10-13 00:15:19,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2021-10-13 00:15:19,344 INFO L87 Difference]: Start difference. First operand 439 states and 441 transitions. Second operand has 76 states, 76 states have (on average 5.9605263157894735) internal successors, (453), 76 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:15:19,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:15:19,735 INFO L93 Difference]: Finished difference Result 582 states and 586 transitions. [2021-10-13 00:15:19,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-10-13 00:15:19,736 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 5.9605263157894735) internal successors, (453), 76 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 426 [2021-10-13 00:15:19,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:15:19,736 INFO L225 Difference]: With dead ends: 582 [2021-10-13 00:15:19,736 INFO L226 Difference]: Without dead ends: 452 [2021-10-13 00:15:19,737 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1815.4ms TimeCoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2021-10-13 00:15:19,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2021-10-13 00:15:19,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 451. [2021-10-13 00:15:19,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 450 states have (on average 1.0022222222222221) internal successors, (451), 450 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:15:19,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 451 transitions. [2021-10-13 00:15:19,745 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 451 transitions. Word has length 426 [2021-10-13 00:15:19,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:15:19,745 INFO L470 AbstractCegarLoop]: Abstraction has 451 states and 451 transitions. [2021-10-13 00:15:19,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 5.9605263157894735) internal successors, (453), 76 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:15:19,745 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 451 transitions. [2021-10-13 00:15:19,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2021-10-13 00:15:19,747 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:15:19,747 INFO L512 BasicCegarLoop]: trace histogram [75, 74, 74, 51, 51, 51, 24, 24, 24, 1, 1] [2021-10-13 00:15:19,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0 [2021-10-13 00:15:19,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,90 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:15:19,949 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:15:19,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:15:19,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1799113250, now seen corresponding path program 37 times [2021-10-13 00:15:19,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:15:19,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058143594] [2021-10-13 00:15:19,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:15:19,949 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:15:20,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:15:22,157 INFO L134 CoverageAnalysis]: Checked inductivity of 14128 backedges. 0 proven. 14128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:15:22,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:15:22,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058143594] [2021-10-13 00:15:22,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058143594] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:15:22,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515935751] [2021-10-13 00:15:22,158 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 00:15:22,158 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:15:22,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:15:22,159 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:15:22,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2021-10-13 00:15:27,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:15:27,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 753 conjuncts, 76 conjunts are in the unsatisfiable core [2021-10-13 00:15:27,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:15:28,330 INFO L134 CoverageAnalysis]: Checked inductivity of 14128 backedges. 0 proven. 14128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:15:28,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515935751] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:15:28,331 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:15:28,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2021-10-13 00:15:28,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545374806] [2021-10-13 00:15:28,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2021-10-13 00:15:28,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:15:28,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2021-10-13 00:15:28,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2021-10-13 00:15:28,333 INFO L87 Difference]: Start difference. First operand 451 states and 451 transitions. Second operand has 77 states, 76 states have (on average 5.921052631578948) internal successors, (450), 76 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:15:28,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:15:28,730 INFO L93 Difference]: Finished difference Result 459 states and 459 transitions. [2021-10-13 00:15:28,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-10-13 00:15:28,730 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 76 states have (on average 5.921052631578948) internal successors, (450), 76 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 450 [2021-10-13 00:15:28,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:15:28,731 INFO L225 Difference]: With dead ends: 459 [2021-10-13 00:15:28,731 INFO L226 Difference]: Without dead ends: 458 [2021-10-13 00:15:28,732 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 449 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1882.1ms TimeCoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2021-10-13 00:15:28,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2021-10-13 00:15:28,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 457. [2021-10-13 00:15:28,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 456 states have (on average 1.0021929824561404) internal successors, (457), 456 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:15:28,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 457 transitions. [2021-10-13 00:15:28,741 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 457 transitions. Word has length 450 [2021-10-13 00:15:28,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:15:28,741 INFO L470 AbstractCegarLoop]: Abstraction has 457 states and 457 transitions. [2021-10-13 00:15:28,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 76 states have (on average 5.921052631578948) internal successors, (450), 76 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:15:28,741 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 457 transitions. [2021-10-13 00:15:28,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2021-10-13 00:15:28,743 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:15:28,743 INFO L512 BasicCegarLoop]: trace histogram [76, 75, 75, 51, 51, 51, 25, 25, 25, 1, 1] [2021-10-13 00:15:28,783 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Ended with exit code 0 [2021-10-13 00:15:28,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,91 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:15:28,948 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:15:28,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:15:28,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1017961519, now seen corresponding path program 38 times [2021-10-13 00:15:28,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:15:28,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689847713] [2021-10-13 00:15:28,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:15:28,949 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:15:29,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:15:31,247 INFO L134 CoverageAnalysis]: Checked inductivity of 14475 backedges. 0 proven. 14475 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:15:31,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:15:31,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689847713] [2021-10-13 00:15:31,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689847713] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:15:31,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636289559] [2021-10-13 00:15:31,248 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:15:31,248 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:15:31,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:15:31,248 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:15:31,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2021-10-13 00:15:36,293 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:15:36,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:15:36,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 763 conjuncts, 77 conjunts are in the unsatisfiable core [2021-10-13 00:15:36,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:15:37,418 INFO L134 CoverageAnalysis]: Checked inductivity of 14475 backedges. 0 proven. 14475 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:15:37,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636289559] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:15:37,418 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:15:37,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 76 [2021-10-13 00:15:37,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801266687] [2021-10-13 00:15:37,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2021-10-13 00:15:37,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:15:37,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2021-10-13 00:15:37,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2021-10-13 00:15:37,421 INFO L87 Difference]: Start difference. First operand 457 states and 457 transitions. Second operand has 78 states, 77 states have (on average 5.922077922077922) internal successors, (456), 77 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:15:37,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:15:37,823 INFO L93 Difference]: Finished difference Result 465 states and 465 transitions. [2021-10-13 00:15:37,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-10-13 00:15:37,823 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 77 states have (on average 5.922077922077922) internal successors, (456), 77 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 456 [2021-10-13 00:15:37,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:15:37,824 INFO L225 Difference]: With dead ends: 465 [2021-10-13 00:15:37,824 INFO L226 Difference]: Without dead ends: 464 [2021-10-13 00:15:37,825 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1892.5ms TimeCoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2021-10-13 00:15:37,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2021-10-13 00:15:37,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 463. [2021-10-13 00:15:37,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 462 states have (on average 1.0021645021645023) internal successors, (463), 462 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:15:37,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 463 transitions. [2021-10-13 00:15:37,834 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 463 transitions. Word has length 456 [2021-10-13 00:15:37,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:15:37,834 INFO L470 AbstractCegarLoop]: Abstraction has 463 states and 463 transitions. [2021-10-13 00:15:37,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 77 states have (on average 5.922077922077922) internal successors, (456), 77 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:15:37,835 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 463 transitions. [2021-10-13 00:15:37,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2021-10-13 00:15:37,836 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:15:37,836 INFO L512 BasicCegarLoop]: trace histogram [77, 76, 76, 51, 51, 51, 26, 26, 26, 1, 1] [2021-10-13 00:15:37,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2021-10-13 00:15:38,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,92 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:15:38,037 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:15:38,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:15:38,037 INFO L82 PathProgramCache]: Analyzing trace with hash -932769916, now seen corresponding path program 39 times [2021-10-13 00:15:38,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:15:38,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585277880] [2021-10-13 00:15:38,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:15:38,037 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:15:38,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:15:40,460 INFO L134 CoverageAnalysis]: Checked inductivity of 14828 backedges. 0 proven. 14828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:15:40,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:15:40,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585277880] [2021-10-13 00:15:40,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585277880] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:15:40,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517630720] [2021-10-13 00:15:40,461 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:15:40,461 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:15:40,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:15:40,462 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:15:40,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2021-10-13 00:15:45,646 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2021-10-13 00:15:45,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:15:45,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-13 00:15:45,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:15:46,573 INFO L134 CoverageAnalysis]: Checked inductivity of 14828 backedges. 5402 proven. 1976 refuted. 0 times theorem prover too weak. 7450 trivial. 0 not checked. [2021-10-13 00:15:46,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517630720] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:15:46,574 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:15:46,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 28] total 78 [2021-10-13 00:15:46,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161974731] [2021-10-13 00:15:46,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2021-10-13 00:15:46,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:15:46,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-10-13 00:15:46,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2021-10-13 00:15:46,576 INFO L87 Difference]: Start difference. First operand 463 states and 463 transitions. Second operand has 79 states, 78 states have (on average 6.0256410256410255) internal successors, (470), 79 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:15:46,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:15:46,998 INFO L93 Difference]: Finished difference Result 471 states and 471 transitions. [2021-10-13 00:15:46,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-10-13 00:15:46,998 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 78 states have (on average 6.0256410256410255) internal successors, (470), 79 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 462 [2021-10-13 00:15:46,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:15:46,999 INFO L225 Difference]: With dead ends: 471 [2021-10-13 00:15:46,999 INFO L226 Difference]: Without dead ends: 470 [2021-10-13 00:15:47,000 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 461 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2113.1ms TimeCoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2021-10-13 00:15:47,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2021-10-13 00:15:47,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 469. [2021-10-13 00:15:47,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 468 states have (on average 1.0021367521367521) internal successors, (469), 468 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:15:47,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 469 transitions. [2021-10-13 00:15:47,010 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 469 transitions. Word has length 462 [2021-10-13 00:15:47,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:15:47,010 INFO L470 AbstractCegarLoop]: Abstraction has 469 states and 469 transitions. [2021-10-13 00:15:47,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 78 states have (on average 6.0256410256410255) internal successors, (470), 79 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:15:47,010 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 469 transitions. [2021-10-13 00:15:47,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2021-10-13 00:15:47,012 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:15:47,012 INFO L512 BasicCegarLoop]: trace histogram [78, 77, 77, 51, 51, 51, 27, 27, 27, 1, 1] [2021-10-13 00:15:47,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Forceful destruction successful, exit code 0 [2021-10-13 00:15:47,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,93 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:15:47,216 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:15:47,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:15:47,217 INFO L82 PathProgramCache]: Analyzing trace with hash -929421065, now seen corresponding path program 40 times [2021-10-13 00:15:47,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:15:47,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544622072] [2021-10-13 00:15:47,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:15:47,217 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:15:47,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:15:49,547 INFO L134 CoverageAnalysis]: Checked inductivity of 15187 backedges. 0 proven. 15187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:15:49,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:15:49,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544622072] [2021-10-13 00:15:49,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544622072] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:15:49,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127521225] [2021-10-13 00:15:49,548 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 00:15:49,549 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:15:49,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:15:49,573 INFO L229 MonitoredProcess]: Starting monitored process 94 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:15:49,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2021-10-13 00:15:55,004 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 00:15:55,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:15:55,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 783 conjuncts, 79 conjunts are in the unsatisfiable core [2021-10-13 00:15:55,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:15:56,175 INFO L134 CoverageAnalysis]: Checked inductivity of 15187 backedges. 0 proven. 15187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:15:56,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127521225] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:15:56,175 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:15:56,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 78 [2021-10-13 00:15:56,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006820739] [2021-10-13 00:15:56,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2021-10-13 00:15:56,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:15:56,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-10-13 00:15:56,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2021-10-13 00:15:56,178 INFO L87 Difference]: Start difference. First operand 469 states and 469 transitions. Second operand has 80 states, 79 states have (on average 5.924050632911392) internal successors, (468), 79 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:15:56,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:15:56,626 INFO L93 Difference]: Finished difference Result 477 states and 477 transitions. [2021-10-13 00:15:56,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-10-13 00:15:56,626 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 79 states have (on average 5.924050632911392) internal successors, (468), 79 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 468 [2021-10-13 00:15:56,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:15:56,627 INFO L225 Difference]: With dead ends: 477 [2021-10-13 00:15:56,627 INFO L226 Difference]: Without dead ends: 476 [2021-10-13 00:15:56,628 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 467 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1994.6ms TimeCoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2021-10-13 00:15:56,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2021-10-13 00:15:56,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 475. [2021-10-13 00:15:56,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 474 states have (on average 1.0021097046413503) internal successors, (475), 474 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:15:56,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 475 transitions. [2021-10-13 00:15:56,638 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 475 transitions. Word has length 468 [2021-10-13 00:15:56,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:15:56,638 INFO L470 AbstractCegarLoop]: Abstraction has 475 states and 475 transitions. [2021-10-13 00:15:56,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 79 states have (on average 5.924050632911392) internal successors, (468), 79 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:15:56,638 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 475 transitions. [2021-10-13 00:15:56,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2021-10-13 00:15:56,640 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:15:56,640 INFO L512 BasicCegarLoop]: trace histogram [79, 78, 78, 51, 51, 51, 28, 28, 28, 1, 1] [2021-10-13 00:15:56,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2021-10-13 00:15:56,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable97 [2021-10-13 00:15:56,841 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:15:56,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:15:56,841 INFO L82 PathProgramCache]: Analyzing trace with hash -708632534, now seen corresponding path program 41 times [2021-10-13 00:15:56,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:15:56,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991962313] [2021-10-13 00:15:56,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:15:56,842 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:15:56,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:15:59,378 INFO L134 CoverageAnalysis]: Checked inductivity of 15552 backedges. 0 proven. 15552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:15:59,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:15:59,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991962313] [2021-10-13 00:15:59,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991962313] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:15:59,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419141324] [2021-10-13 00:15:59,378 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 00:15:59,378 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:15:59,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:15:59,379 INFO L229 MonitoredProcess]: Starting monitored process 95 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:15:59,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2021-10-13 00:16:05,222 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 53 check-sat command(s) [2021-10-13 00:16:05,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:16:05,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 72 conjunts are in the unsatisfiable core [2021-10-13 00:16:05,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:16:09,302 INFO L134 CoverageAnalysis]: Checked inductivity of 15552 backedges. 3076 proven. 12292 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2021-10-13 00:16:09,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419141324] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:16:09,303 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:16:09,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 72] total 122 [2021-10-13 00:16:09,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993229221] [2021-10-13 00:16:09,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 123 states [2021-10-13 00:16:09,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:16:09,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2021-10-13 00:16:09,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2021-10-13 00:16:09,306 INFO L87 Difference]: Start difference. First operand 475 states and 475 transitions. Second operand has 123 states, 122 states have (on average 6.713114754098361) internal successors, (819), 123 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:16:10,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:16:10,144 INFO L93 Difference]: Finished difference Result 735 states and 777 transitions. [2021-10-13 00:16:10,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2021-10-13 00:16:10,145 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 122 states have (on average 6.713114754098361) internal successors, (819), 123 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 474 [2021-10-13 00:16:10,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:16:10,146 INFO L225 Difference]: With dead ends: 735 [2021-10-13 00:16:10,146 INFO L226 Difference]: Without dead ends: 734 [2021-10-13 00:16:10,147 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 552 GetRequests, 431 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5071.8ms TimeCoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2021-10-13 00:16:10,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2021-10-13 00:16:10,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 733. [2021-10-13 00:16:10,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 733 states, 732 states have (on average 1.0013661202185793) internal successors, (733), 732 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:16:10,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 733 transitions. [2021-10-13 00:16:10,176 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 733 transitions. Word has length 474 [2021-10-13 00:16:10,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:16:10,177 INFO L470 AbstractCegarLoop]: Abstraction has 733 states and 733 transitions. [2021-10-13 00:16:10,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 123 states, 122 states have (on average 6.713114754098361) internal successors, (819), 123 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:16:10,177 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 733 transitions. [2021-10-13 00:16:10,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 733 [2021-10-13 00:16:10,181 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:16:10,182 INFO L512 BasicCegarLoop]: trace histogram [122, 121, 121, 71, 71, 71, 51, 51, 51, 1, 1] [2021-10-13 00:16:10,220 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Ended with exit code 0 [2021-10-13 00:16:10,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,95 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:16:10,385 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 00:16:10,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:16:10,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1229081285, now seen corresponding path program 42 times [2021-10-13 00:16:10,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:16:10,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486982122] [2021-10-13 00:16:10,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:16:10,385 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:16:10,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:16:16,279 INFO L134 CoverageAnalysis]: Checked inductivity of 36923 backedges. 0 proven. 36923 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:16:16,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:16:16,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486982122] [2021-10-13 00:16:16,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486982122] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:16:16,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559709731] [2021-10-13 00:16:16,280 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 00:16:16,280 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:16:16,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:16:16,304 INFO L229 MonitoredProcess]: Starting monitored process 96 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:16:16,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2021-10-13 00:16:22,531 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 72 check-sat command(s) [2021-10-13 00:16:22,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:16:22,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 1223 conjuncts, 123 conjunts are in the unsatisfiable core [2021-10-13 00:16:22,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:16:28,806 INFO L134 CoverageAnalysis]: Checked inductivity of 36923 backedges. 23969 proven. 12752 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2021-10-13 00:16:28,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559709731] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:16:28,807 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:16:28,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [122, 72] total 194 [2021-10-13 00:16:28,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485444406] [2021-10-13 00:16:28,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 195 states [2021-10-13 00:16:28,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:16:28,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 195 interpolants. [2021-10-13 00:16:28,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10253, Invalid=27577, Unknown=0, NotChecked=0, Total=37830 [2021-10-13 00:16:28,815 INFO L87 Difference]: Start difference. First operand 733 states and 733 transitions. Second operand has 195 states, 195 states have (on average 6.733333333333333) internal successors, (1313), 194 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:16:42,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:16:42,313 INFO L93 Difference]: Finished difference Result 733 states and 733 transitions. [2021-10-13 00:16:42,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2021-10-13 00:16:42,314 INFO L78 Accepts]: Start accepts. Automaton has has 195 states, 195 states have (on average 6.733333333333333) internal successors, (1313), 194 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 732 [2021-10-13 00:16:42,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:16:42,314 INFO L225 Difference]: With dead ends: 733 [2021-10-13 00:16:42,314 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 00:16:42,327 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1060 GetRequests, 660 SyntacticMatches, 0 SemanticMatches, 400 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35724 ImplicationChecksByTransitivity, 20478.3ms TimeCoverageRelationStatistics Valid=41435, Invalid=119767, Unknown=0, NotChecked=0, Total=161202 [2021-10-13 00:16:42,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 00:16:42,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 00:16:42,327 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) [2021-10-13 00:16:42,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 00:16:42,328 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 732 [2021-10-13 00:16:42,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:16:42,328 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:16:42,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 195 states, 195 states have (on average 6.733333333333333) internal successors, (1313), 194 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:16:42,329 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 00:16:42,329 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 00:16:42,332 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 00:16:42,333 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 00:16:42,333 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 00:16:42,333 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 00:16:42,333 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 00:16:42,334 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 00:16:42,381 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Ended with exit code 0 [2021-10-13 00:16:42,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,96 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:16:42,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 00:16:42,550 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:16:43,436 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:16:46,743 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-13 00:16:46,743 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 00:16:46,743 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2021-10-13 00:16:46,743 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2021-10-13 00:16:46,743 INFO L857 garLoopResultBuilder]: For program point L19(lines 19 23) no Hoare annotation was computed. [2021-10-13 00:16:46,743 INFO L857 garLoopResultBuilder]: For program point L19-2(lines 19 23) no Hoare annotation was computed. [2021-10-13 00:16:46,744 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-13 00:16:46,744 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2021-10-13 00:16:46,744 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 00:16:46,744 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2021-10-13 00:16:46,744 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 00:16:46,744 INFO L860 garLoopResultBuilder]: At program point L26(lines 14 27) the Hoare annotation is: true [2021-10-13 00:16:46,744 INFO L857 garLoopResultBuilder]: For program point L24(line 24) no Hoare annotation was computed. [2021-10-13 00:16:46,744 INFO L857 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2021-10-13 00:16:46,744 INFO L857 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2021-10-13 00:16:46,744 INFO L857 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2021-10-13 00:16:46,744 INFO L857 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2021-10-13 00:16:46,745 INFO L853 garLoopResultBuilder]: At program point L18-2(lines 18 25) the Hoare annotation is: (let ((.cse7 (<= ULTIMATE.start_main_~y~0 21)) (.cse4 (<= ULTIMATE.start_main_~y~0 32)) (.cse28 (<= ULTIMATE.start_main_~y~0 15)) (.cse36 (<= ULTIMATE.start_main_~y~0 8)) (.cse34 (<= ULTIMATE.start_main_~y~0 42)) (.cse37 (<= ULTIMATE.start_main_~y~0 40)) (.cse21 (<= ULTIMATE.start_main_~y~0 46)) (.cse12 (<= ULTIMATE.start_main_~y~0 7)) (.cse31 (<= ULTIMATE.start_main_~y~0 43)) (.cse27 (<= ULTIMATE.start_main_~y~0 20)) (.cse10 (<= ULTIMATE.start_main_~y~0 31)) (.cse35 (<= ULTIMATE.start_main_~y~0 36)) (.cse18 (<= ULTIMATE.start_main_~y~0 28)) (.cse40 (<= ULTIMATE.start_main_~y~0 18)) (.cse8 (<= ULTIMATE.start_main_~y~0 45)) (.cse17 (<= ULTIMATE.start_main_~y~0 10)) (.cse30 (<= ULTIMATE.start_main_~y~0 22)) (.cse43 (<= ULTIMATE.start_main_~y~0 3)) (.cse44 (<= ULTIMATE.start_main_~y~0 23)) (.cse6 (<= ULTIMATE.start_main_~y~0 27)) (.cse19 (<= ULTIMATE.start_main_~y~0 0)) (.cse45 (<= ULTIMATE.start_main_~y~0 26)) (.cse0 (<= ULTIMATE.start_main_~y~0 9)) (.cse15 (<= ULTIMATE.start_main_~y~0 24)) (.cse16 (<= ULTIMATE.start_main_~y~0 17)) (.cse9 (<= ULTIMATE.start_main_~y~0 30)) (.cse20 (<= ULTIMATE.start_main_~y~0 13)) (.cse14 (<= ULTIMATE.start_main_~y~0 37)) (.cse29 (<= ULTIMATE.start_main_~y~0 33)) (.cse39 (<= ULTIMATE.start_main_~y~0 38)) (.cse42 (<= ULTIMATE.start_main_~y~0 44)) (.cse41 (<= ULTIMATE.start_main_~y~0 14)) (.cse33 (<= ULTIMATE.start_main_~y~0 4)) (.cse11 (<= ULTIMATE.start_main_~y~0 11)) (.cse46 (<= ULTIMATE.start_main_~y~0 48)) (.cse32 (<= ULTIMATE.start_main_~y~0 39)) (.cse38 (<= ULTIMATE.start_main_~y~0 19)) (.cse13 (<= ULTIMATE.start_main_~y~0 6)) (.cse26 (<= ULTIMATE.start_main_~y~0 2)) (.cse47 (<= ULTIMATE.start_main_~y~0 1)) (.cse22 (<= ULTIMATE.start_main_~y~0 25)) (.cse48 (<= ULTIMATE.start_main_~y~0 12)) (.cse23 (<= ULTIMATE.start_main_~y~0 41)) (.cse50 (<= ULTIMATE.start_main_~y~0 50)) (.cse51 (<= ULTIMATE.start_main_~y~0 29)) (.cse49 (<= ULTIMATE.start_main_~y~0 5)) (.cse2 (<= ULTIMATE.start_main_~y~0 49)) (.cse5 (<= ULTIMATE.start_main_~y~0 34)) (.cse25 (<= ULTIMATE.start_main_~y~0 35)) (.cse3 (<= 51 ULTIMATE.start_main_~x~0)) (.cse52 (<= ULTIMATE.start_main_~y~0 16)) (.cse24 (<= ULTIMATE.start_main_~y~0 47)) (.cse1 (<= ULTIMATE.start_main_~x~0 51))) (or (and .cse0 .cse1 (<= 9 ULTIMATE.start_main_~x~0)) (and .cse2 (<= ULTIMATE.start_main_~x~0 53) .cse3) (and (<= 32 ULTIMATE.start_main_~x~0) .cse1 .cse4) (and .cse5 .cse6 .cse3 (<= ULTIMATE.start_main_~x~0 75)) (and .cse5 .cse7 (<= ULTIMATE.start_main_~x~0 81) .cse3) (and .cse8 (<= ULTIMATE.start_main_~x~0 57) .cse3) (and (<= 30 ULTIMATE.start_main_~x~0) .cse9 .cse1) (and (<= 21 ULTIMATE.start_main_~x~0) .cse7 .cse1) (and (<= 31 ULTIMATE.start_main_~x~0) .cse10 .cse1) (and (<= ULTIMATE.start_main_~x~0 91) .cse5 .cse3 .cse11) (and .cse12 .cse1 (<= 7 ULTIMATE.start_main_~x~0)) (and .cse13 .cse5 (<= ULTIMATE.start_main_~x~0 96) .cse3) (and .cse14 (<= 37 ULTIMATE.start_main_~x~0) .cse1) (and .cse15 .cse5 (<= ULTIMATE.start_main_~x~0 78) .cse3) (and .cse5 (<= ULTIMATE.start_main_~x~0 70) .cse3 .cse4) (and .cse16 (<= ULTIMATE.start_main_~x~0 85) .cse5 .cse3) (and .cse5 (<= ULTIMATE.start_main_~x~0 92) .cse3 .cse17) (and .cse5 (<= ULTIMATE.start_main_~x~0 74) .cse3 .cse18) (and .cse5 (<= (+ ULTIMATE.start_main_~y~0 1) 0) (<= ULTIMATE.start_main_~x~0 103) .cse3) (and .cse5 .cse19 .cse3 (<= ULTIMATE.start_main_~x~0 102)) (and .cse20 .cse5 .cse3 (<= ULTIMATE.start_main_~x~0 89)) (and .cse21 (<= 46 ULTIMATE.start_main_~x~0) .cse1) (and (<= 25 ULTIMATE.start_main_~x~0) .cse22 (<= ULTIMATE.start_main_~x~0 25)) (and (<= 41 ULTIMATE.start_main_~x~0) .cse23 .cse1) (and (<= ULTIMATE.start_main_~x~0 55) .cse24 .cse3) (and .cse25 (<= 35 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 35)) (and .cse5 .cse26 .cse3 (<= ULTIMATE.start_main_~x~0 100)) (and (<= 20 ULTIMATE.start_main_~x~0) .cse27 .cse1) (and .cse28 .cse5 (<= ULTIMATE.start_main_~x~0 87) .cse3) (and .cse5 (<= 34 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 34)) (and .cse5 .cse29 (<= ULTIMATE.start_main_~x~0 69) .cse3) (and (<= ULTIMATE.start_main_~x~0 80) .cse5 .cse30 .cse3) (and .cse31 .cse1 (<= 43 ULTIMATE.start_main_~x~0)) (and .cse28 (<= 15 ULTIMATE.start_main_~x~0) .cse1) (and (<= ULTIMATE.start_main_~x~0 63) .cse32 .cse3) (and (<= 4 ULTIMATE.start_main_~x~0) .cse33 .cse1) (and .cse34 .cse1 (<= 42 ULTIMATE.start_main_~x~0)) (and .cse35 .cse1 (<= 36 ULTIMATE.start_main_~x~0)) (and .cse5 (<= ULTIMATE.start_main_~x~0 94) .cse3 .cse36) (and (<= 8 ULTIMATE.start_main_~x~0) .cse1 .cse36) (and .cse37 (<= ULTIMATE.start_main_~x~0 62) .cse3) (and .cse34 (<= ULTIMATE.start_main_~x~0 60) .cse3) (and .cse37 (<= ULTIMATE.start_main_~x~0 40) (<= 40 ULTIMATE.start_main_~x~0)) (and .cse21 (<= ULTIMATE.start_main_~x~0 56) .cse3) (and .cse5 (<= ULTIMATE.start_main_~x~0 83) .cse3 .cse38) (and .cse5 .cse3 (<= ULTIMATE.start_main_~x~0 68)) (and (<= ULTIMATE.start_main_~x~0 64) .cse39 .cse3) (and (<= 18 ULTIMATE.start_main_~x~0) .cse40 .cse1) (and .cse41 .cse1 (<= 14 ULTIMATE.start_main_~x~0)) (and .cse5 .cse12 .cse3 (<= ULTIMATE.start_main_~x~0 95)) (and .cse31 (<= ULTIMATE.start_main_~x~0 59) .cse3) (and (<= ULTIMATE.start_main_~x~0 82) .cse5 .cse27 .cse3) (and .cse5 .cse10 (<= ULTIMATE.start_main_~x~0 71) .cse3) (and (<= ULTIMATE.start_main_~x~0 66) .cse35 .cse3) (and .cse42 (<= 44 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 44)) (and (<= ULTIMATE.start_main_~x~0 99) .cse5 .cse43 .cse3) (and (<= 28 ULTIMATE.start_main_~x~0) .cse1 .cse18) (and .cse5 .cse44 .cse3 (<= ULTIMATE.start_main_~x~0 79)) (and .cse5 .cse40 .cse3 (<= ULTIMATE.start_main_~x~0 84)) (and .cse8 (<= 45 ULTIMATE.start_main_~x~0) .cse1) (and (<= 10 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 10) .cse17) (and .cse30 (<= 22 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 22)) (and .cse5 .cse3 (<= ULTIMATE.start_main_~x~0 76) .cse45) (and .cse3 (<= ULTIMATE.start_main_~x~0 54) .cse46) (and (<= ULTIMATE.start_main_~x~0 3) .cse43 (<= 3 ULTIMATE.start_main_~x~0)) (and (<= 23 ULTIMATE.start_main_~x~0) .cse44 .cse1) (and (<= ULTIMATE.start_main_~x~0 1) (<= 1 ULTIMATE.start_main_~x~0) .cse47) (and .cse48 .cse1 (<= 12 ULTIMATE.start_main_~x~0)) (and .cse6 (<= 27 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 27)) (and (<= ULTIMATE.start_main_~x~0 0) .cse19 (<= 0 ULTIMATE.start_main_~y~0) (<= 0 ULTIMATE.start_main_~x~0)) (and (<= 26 ULTIMATE.start_main_~x~0) .cse1 .cse45) (and .cse1 .cse3 (<= ULTIMATE.start_main_~y~0 51)) (and .cse5 (<= ULTIMATE.start_main_~x~0 93) .cse0 .cse3) (and .cse15 (<= 24 ULTIMATE.start_main_~x~0) .cse1) (and .cse16 (<= 17 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 17)) (and .cse5 .cse9 (<= ULTIMATE.start_main_~x~0 72) .cse3) (and .cse20 (<= 13 ULTIMATE.start_main_~x~0) .cse1) (and .cse14 (<= ULTIMATE.start_main_~x~0 65) .cse3) (and .cse29 (<= 33 ULTIMATE.start_main_~x~0) .cse1) (and (<= 38 ULTIMATE.start_main_~x~0) .cse1 .cse39) (and .cse42 .cse3 (<= ULTIMATE.start_main_~x~0 58)) (and .cse5 .cse41 (<= ULTIMATE.start_main_~x~0 88) .cse3) (and .cse5 .cse33 (<= ULTIMATE.start_main_~x~0 98) .cse3) (and (<= 11 ULTIMATE.start_main_~x~0) .cse1 .cse11) (and (<= 48 ULTIMATE.start_main_~x~0) .cse1 .cse46) (and (<= 39 ULTIMATE.start_main_~x~0) .cse32 .cse1) (and .cse5 .cse49 (<= ULTIMATE.start_main_~x~0 97) .cse3) (and (<= 19 ULTIMATE.start_main_~x~0) .cse1 .cse38) (and .cse13 (<= 6 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 6)) (and (<= 2 ULTIMATE.start_main_~x~0) .cse26 (<= ULTIMATE.start_main_~x~0 2)) (and .cse5 (<= ULTIMATE.start_main_~x~0 101) .cse3 .cse47) (and .cse5 .cse22 .cse3 (<= ULTIMATE.start_main_~x~0 77)) (and .cse5 .cse48 (<= ULTIMATE.start_main_~x~0 90) .cse3) (and .cse23 (<= ULTIMATE.start_main_~x~0 61) .cse3) (and (<= ULTIMATE.start_main_~x~0 52) .cse50 .cse3) (and .cse1 .cse50 (<= 50 ULTIMATE.start_main_~x~0)) (and .cse51 (<= 29 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 29)) (and .cse5 (<= ULTIMATE.start_main_~x~0 73) .cse51 .cse3) (and (<= 5 ULTIMATE.start_main_~x~0) .cse49 .cse1) (and .cse2 (<= 49 ULTIMATE.start_main_~x~0) .cse1) (and .cse5 .cse52 .cse3 (<= ULTIMATE.start_main_~x~0 86)) (and .cse25 .cse3 (<= ULTIMATE.start_main_~x~0 67)) (and .cse52 (<= 16 ULTIMATE.start_main_~x~0) .cse1) (and (<= 47 ULTIMATE.start_main_~x~0) .cse24 .cse1))) [2021-10-13 00:16:46,746 INFO L857 garLoopResultBuilder]: For program point L18-3(lines 18 25) no Hoare annotation was computed. [2021-10-13 00:16:46,750 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:16:46,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:16:46 BoogieIcfgContainer [2021-10-13 00:16:46,803 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:16:46,804 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:16:46,804 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:16:46,804 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:16:46,805 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:09:48" (3/4) ... [2021-10-13 00:16:46,808 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 00:16:46,820 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-13 00:16:46,821 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-13 00:16:46,869 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 00:16:46,870 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:16:46,872 INFO L168 Benchmark]: Toolchain (without parser) took 419538.82 ms. Allocated memory was 94.4 MB in the beginning and 2.9 GB in the end (delta: 2.8 GB). Free memory was 59.6 MB in the beginning and 2.2 GB in the end (delta: -2.1 GB). Peak memory consumption was 730.5 MB. Max. memory is 16.1 GB. [2021-10-13 00:16:46,872 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 94.4 MB. Free memory was 64.1 MB in the beginning and 64.1 MB in the end (delta: 28.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:16:46,873 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.13 ms. Allocated memory is still 94.4 MB. Free memory was 59.2 MB in the beginning and 71.5 MB in the end (delta: -12.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:16:46,873 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.27 ms. Allocated memory is still 94.4 MB. Free memory was 71.5 MB in the beginning and 70.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:16:46,874 INFO L168 Benchmark]: Boogie Preprocessor took 22.57 ms. Allocated memory is still 94.4 MB. Free memory was 70.2 MB in the beginning and 69.4 MB in the end (delta: 866.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:16:46,874 INFO L168 Benchmark]: RCFGBuilder took 348.22 ms. Allocated memory is still 94.4 MB. Free memory was 69.4 MB in the beginning and 61.4 MB in the end (delta: 8.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 00:16:46,875 INFO L168 Benchmark]: TraceAbstraction took 418792.79 ms. Allocated memory was 94.4 MB in the beginning and 2.9 GB in the end (delta: 2.8 GB). Free memory was 60.6 MB in the beginning and 2.2 GB in the end (delta: -2.1 GB). Peak memory consumption was 853.9 MB. Max. memory is 16.1 GB. [2021-10-13 00:16:46,875 INFO L168 Benchmark]: Witness Printer took 66.12 ms. Allocated memory is still 2.9 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 00:16:46,878 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 94.4 MB. Free memory was 64.1 MB in the beginning and 64.1 MB in the end (delta: 28.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 261.13 ms. Allocated memory is still 94.4 MB. Free memory was 59.2 MB in the beginning and 71.5 MB in the end (delta: -12.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.27 ms. Allocated memory is still 94.4 MB. Free memory was 71.5 MB in the beginning and 70.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.57 ms. Allocated memory is still 94.4 MB. Free memory was 70.2 MB in the beginning and 69.4 MB in the end (delta: 866.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 348.22 ms. Allocated memory is still 94.4 MB. Free memory was 69.4 MB in the beginning and 61.4 MB in the end (delta: 8.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 418792.79 ms. Allocated memory was 94.4 MB in the beginning and 2.9 GB in the end (delta: 2.8 GB). Free memory was 60.6 MB in the beginning and 2.2 GB in the end (delta: -2.1 GB). Peak memory consumption was 853.9 MB. Max. memory is 16.1 GB. * Witness Printer took 66.12 ms. Allocated memory is still 2.9 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 418630.4ms, OverallIterations: 100, TraceHistogramMax: 122, EmptinessCheckTime: 237.8ms, AutomataDifference: 38322.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 4201.9ms, InitialAbstractionConstructionTime: 12.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2623 SDtfs, 18154 SDslu, 15422 SDs, 0 SdLazy, 22487 SolverSat, 3085 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13902.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22995 GetRequests, 19491 SyntacticMatches, 0 SemanticMatches, 3504 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38491 ImplicationChecksByTransitivity, 79944.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5250occurred in iteration=84, InterpolantAutomatonStates: 3454, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 4642.1ms AutomataMinimizationTime, 100 MinimizatonAttempts, 86750 StatesRemovedByMinimization, 91 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 108 NumberOfFragments, 1152 HoareAnnotationTreeSize, 2 FomulaSimplifications, 3200 FormulaSimplificationTreeSizeReduction, 890.0ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 16785 FormulaSimplificationTreeSizeReductionInter, 3293.9ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 778.2ms SsaConstructionTime, 6554.5ms SatisfiabilityAnalysisTime, 135137.2ms InterpolantComputationTime, 39784 NumberOfCodeBlocks, 38866 NumberOfCodeBlocksAsserted, 1451 NumberOfCheckSat, 39589 ConstructedInterpolants, 0 QuantifiedInterpolants, 106837 SizeOfPredicates, 0 NumberOfNonLiveVariables, 31843 ConjunctsInSsa, 2818 ConjunctsInUnsatCore, 195 InterpolantComputations, 6 PerfectInterpolantSequences, 213114/851854 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((y <= 9 && x <= 51) && 9 <= x) || ((y <= 49 && x <= 53) && 51 <= x)) || ((32 <= x && x <= 51) && y <= 32)) || (((y <= 34 && y <= 27) && 51 <= x) && x <= 75)) || (((y <= 34 && y <= 21) && x <= 81) && 51 <= x)) || ((y <= 45 && x <= 57) && 51 <= x)) || ((30 <= x && y <= 30) && x <= 51)) || ((21 <= x && y <= 21) && x <= 51)) || ((31 <= x && y <= 31) && x <= 51)) || (((x <= 91 && y <= 34) && 51 <= x) && y <= 11)) || ((y <= 7 && x <= 51) && 7 <= x)) || (((y <= 6 && y <= 34) && x <= 96) && 51 <= x)) || ((y <= 37 && 37 <= x) && x <= 51)) || (((y <= 24 && y <= 34) && x <= 78) && 51 <= x)) || (((y <= 34 && x <= 70) && 51 <= x) && y <= 32)) || (((y <= 17 && x <= 85) && y <= 34) && 51 <= x)) || (((y <= 34 && x <= 92) && 51 <= x) && y <= 10)) || (((y <= 34 && x <= 74) && 51 <= x) && y <= 28)) || (((y <= 34 && y + 1 <= 0) && x <= 103) && 51 <= x)) || (((y <= 34 && y <= 0) && 51 <= x) && x <= 102)) || (((y <= 13 && y <= 34) && 51 <= x) && x <= 89)) || ((y <= 46 && 46 <= x) && x <= 51)) || ((25 <= x && y <= 25) && x <= 25)) || ((41 <= x && y <= 41) && x <= 51)) || ((x <= 55 && y <= 47) && 51 <= x)) || ((y <= 35 && 35 <= x) && x <= 35)) || (((y <= 34 && y <= 2) && 51 <= x) && x <= 100)) || ((20 <= x && y <= 20) && x <= 51)) || (((y <= 15 && y <= 34) && x <= 87) && 51 <= x)) || ((y <= 34 && 34 <= x) && x <= 34)) || (((y <= 34 && y <= 33) && x <= 69) && 51 <= x)) || (((x <= 80 && y <= 34) && y <= 22) && 51 <= x)) || ((y <= 43 && x <= 51) && 43 <= x)) || ((y <= 15 && 15 <= x) && x <= 51)) || ((x <= 63 && y <= 39) && 51 <= x)) || ((4 <= x && y <= 4) && x <= 51)) || ((y <= 42 && x <= 51) && 42 <= x)) || ((y <= 36 && x <= 51) && 36 <= x)) || (((y <= 34 && x <= 94) && 51 <= x) && y <= 8)) || ((8 <= x && x <= 51) && y <= 8)) || ((y <= 40 && x <= 62) && 51 <= x)) || ((y <= 42 && x <= 60) && 51 <= x)) || ((y <= 40 && x <= 40) && 40 <= x)) || ((y <= 46 && x <= 56) && 51 <= x)) || (((y <= 34 && x <= 83) && 51 <= x) && y <= 19)) || ((y <= 34 && 51 <= x) && x <= 68)) || ((x <= 64 && y <= 38) && 51 <= x)) || ((18 <= x && y <= 18) && x <= 51)) || ((y <= 14 && x <= 51) && 14 <= x)) || (((y <= 34 && y <= 7) && 51 <= x) && x <= 95)) || ((y <= 43 && x <= 59) && 51 <= x)) || (((x <= 82 && y <= 34) && y <= 20) && 51 <= x)) || (((y <= 34 && y <= 31) && x <= 71) && 51 <= x)) || ((x <= 66 && y <= 36) && 51 <= x)) || ((y <= 44 && 44 <= x) && x <= 44)) || (((x <= 99 && y <= 34) && y <= 3) && 51 <= x)) || ((28 <= x && x <= 51) && y <= 28)) || (((y <= 34 && y <= 23) && 51 <= x) && x <= 79)) || (((y <= 34 && y <= 18) && 51 <= x) && x <= 84)) || ((y <= 45 && 45 <= x) && x <= 51)) || ((10 <= x && x <= 10) && y <= 10)) || ((y <= 22 && 22 <= x) && x <= 22)) || (((y <= 34 && 51 <= x) && x <= 76) && y <= 26)) || ((51 <= x && x <= 54) && y <= 48)) || ((x <= 3 && y <= 3) && 3 <= x)) || ((23 <= x && y <= 23) && x <= 51)) || ((x <= 1 && 1 <= x) && y <= 1)) || ((y <= 12 && x <= 51) && 12 <= x)) || ((y <= 27 && 27 <= x) && x <= 27)) || (((x <= 0 && y <= 0) && 0 <= y) && 0 <= x)) || ((26 <= x && x <= 51) && y <= 26)) || ((x <= 51 && 51 <= x) && y <= 51)) || (((y <= 34 && x <= 93) && y <= 9) && 51 <= x)) || ((y <= 24 && 24 <= x) && x <= 51)) || ((y <= 17 && 17 <= x) && x <= 17)) || (((y <= 34 && y <= 30) && x <= 72) && 51 <= x)) || ((y <= 13 && 13 <= x) && x <= 51)) || ((y <= 37 && x <= 65) && 51 <= x)) || ((y <= 33 && 33 <= x) && x <= 51)) || ((38 <= x && x <= 51) && y <= 38)) || ((y <= 44 && 51 <= x) && x <= 58)) || (((y <= 34 && y <= 14) && x <= 88) && 51 <= x)) || (((y <= 34 && y <= 4) && x <= 98) && 51 <= x)) || ((11 <= x && x <= 51) && y <= 11)) || ((48 <= x && x <= 51) && y <= 48)) || ((39 <= x && y <= 39) && x <= 51)) || (((y <= 34 && y <= 5) && x <= 97) && 51 <= x)) || ((19 <= x && x <= 51) && y <= 19)) || ((y <= 6 && 6 <= x) && x <= 6)) || ((2 <= x && y <= 2) && x <= 2)) || (((y <= 34 && x <= 101) && 51 <= x) && y <= 1)) || (((y <= 34 && y <= 25) && 51 <= x) && x <= 77)) || (((y <= 34 && y <= 12) && x <= 90) && 51 <= x)) || ((y <= 41 && x <= 61) && 51 <= x)) || ((x <= 52 && y <= 50) && 51 <= x)) || ((x <= 51 && y <= 50) && 50 <= x)) || ((y <= 29 && 29 <= x) && x <= 29)) || (((y <= 34 && x <= 73) && y <= 29) && 51 <= x)) || ((5 <= x && y <= 5) && x <= 51)) || ((y <= 49 && 49 <= x) && x <= 51)) || (((y <= 34 && y <= 16) && 51 <= x) && x <= 86)) || ((y <= 35 && 51 <= x) && x <= 67)) || ((y <= 16 && 16 <= x) && x <= 51)) || ((47 <= x && y <= 47) && x <= 51) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-13 00:16:46,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8037e-4564-4fea-b94b-64421b4122ab/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...