./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/MultCommutative-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/MultCommutative-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa --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 32bit --witnessprinter.graph.data.programhash ce29b37e076ab683230ebf17073db3b7759ea39570dd2ef64322b6d43bb636cd --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 18:31:57,725 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 18:31:57,727 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 18:31:57,756 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 18:31:57,756 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 18:31:57,757 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 18:31:57,758 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 18:31:57,760 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 18:31:57,762 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 18:31:57,762 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 18:31:57,763 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 18:31:57,764 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 18:31:57,764 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 18:31:57,765 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 18:31:57,766 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 18:31:57,768 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 18:31:57,768 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 18:31:57,769 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 18:31:57,771 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 18:31:57,773 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 18:31:57,774 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 18:31:57,775 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 18:31:57,776 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 18:31:57,777 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 18:31:57,780 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 18:31:57,780 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 18:31:57,780 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 18:31:57,781 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 18:31:57,782 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 18:31:57,782 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 18:31:57,783 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 18:31:57,783 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 18:31:57,784 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 18:31:57,784 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 18:31:57,785 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 18:31:57,785 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 18:31:57,786 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 18:31:57,786 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 18:31:57,786 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 18:31:57,787 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 18:31:57,787 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 18:31:57,788 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-12-06 18:31:57,805 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 18:31:57,805 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 18:31:57,806 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 18:31:57,806 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 18:31:57,806 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 18:31:57,806 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 18:31:57,807 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 18:31:57,807 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 18:31:57,807 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 18:31:57,807 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 18:31:57,808 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 18:31:57,808 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 18:31:57,808 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 18:31:57,808 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 18:31:57,808 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 18:31:57,808 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 18:31:57,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 18:31:57,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 18:31:57,808 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-06 18:31:57,809 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 18:31:57,809 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 18:31:57,809 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 18:31:57,809 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 18:31:57,809 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 18:31:57,809 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 18:31:57,809 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 18:31:57,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:31:57,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 18:31:57,810 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 18:31:57,810 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 18:31:57,810 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 18:31:57,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 18:31:57,810 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 18:31:57,810 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 18:31:57,810 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_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce29b37e076ab683230ebf17073db3b7759ea39570dd2ef64322b6d43bb636cd [2021-12-06 18:31:57,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 18:31:57,987 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 18:31:57,989 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 18:31:57,990 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 18:31:57,990 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 18:31:57,991 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/recursive/MultCommutative-2.c [2021-12-06 18:31:58,040 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/data/3f42662cc/2ccd27633c0942449feff1d2ac4b1508/FLAG2c9bb5336 [2021-12-06 18:31:58,419 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 18:31:58,419 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/sv-benchmarks/c/recursive/MultCommutative-2.c [2021-12-06 18:31:58,424 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/data/3f42662cc/2ccd27633c0942449feff1d2ac4b1508/FLAG2c9bb5336 [2021-12-06 18:31:58,433 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/data/3f42662cc/2ccd27633c0942449feff1d2ac4b1508 [2021-12-06 18:31:58,435 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 18:31:58,436 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 18:31:58,437 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 18:31:58,437 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 18:31:58,440 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 18:31:58,440 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:31:58" (1/1) ... [2021-12-06 18:31:58,441 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f333e01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:31:58, skipping insertion in model container [2021-12-06 18:31:58,442 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:31:58" (1/1) ... [2021-12-06 18:31:58,447 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 18:31:58,456 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 18:31:58,581 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/sv-benchmarks/c/recursive/MultCommutative-2.c[970,983] [2021-12-06 18:31:58,582 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:31:58,588 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 18:31:58,599 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/sv-benchmarks/c/recursive/MultCommutative-2.c[970,983] [2021-12-06 18:31:58,599 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:31:58,608 INFO L208 MainTranslator]: Completed translation [2021-12-06 18:31:58,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:31:58 WrapperNode [2021-12-06 18:31:58,608 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 18:31:58,609 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 18:31:58,609 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 18:31:58,609 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 18:31:58,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:31:58" (1/1) ... [2021-12-06 18:31:58,620 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:31:58" (1/1) ... [2021-12-06 18:31:58,633 INFO L137 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 36 [2021-12-06 18:31:58,633 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 18:31:58,634 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 18:31:58,634 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 18:31:58,634 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 18:31:58,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:31:58" (1/1) ... [2021-12-06 18:31:58,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:31:58" (1/1) ... [2021-12-06 18:31:58,641 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:31:58" (1/1) ... [2021-12-06 18:31:58,642 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:31:58" (1/1) ... [2021-12-06 18:31:58,644 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:31:58" (1/1) ... [2021-12-06 18:31:58,645 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:31:58" (1/1) ... [2021-12-06 18:31:58,646 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:31:58" (1/1) ... [2021-12-06 18:31:58,647 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 18:31:58,648 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 18:31:58,648 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 18:31:58,648 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 18:31:58,649 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:31:58" (1/1) ... [2021-12-06 18:31:58,655 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:31:58,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:31:58,677 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 18:31:58,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 18:31:58,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 18:31:58,713 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2021-12-06 18:31:58,713 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2021-12-06 18:31:58,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 18:31:58,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 18:31:58,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 18:31:58,765 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 18:31:58,767 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 18:31:58,870 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 18:31:58,876 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 18:31:58,877 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-06 18:31:58,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:31:58 BoogieIcfgContainer [2021-12-06 18:31:58,879 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 18:31:58,881 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 18:31:58,881 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 18:31:58,884 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 18:31:58,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 06:31:58" (1/3) ... [2021-12-06 18:31:58,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f4ae6ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:31:58, skipping insertion in model container [2021-12-06 18:31:58,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:31:58" (2/3) ... [2021-12-06 18:31:58,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f4ae6ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:31:58, skipping insertion in model container [2021-12-06 18:31:58,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:31:58" (3/3) ... [2021-12-06 18:31:58,887 INFO L111 eAbstractionObserver]: Analyzing ICFG MultCommutative-2.c [2021-12-06 18:31:58,893 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 18:31:58,893 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-12-06 18:31:58,933 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 18:31:58,939 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, mAutomataTypeConcurrency=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 [2021-12-06 18:31:58,939 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-12-06 18:31:58,953 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 22 states have (on average 1.5) internal successors, (33), 28 states have internal predecessors, (33), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 18:31:58,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-06 18:31:58,956 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:31:58,957 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:31:58,957 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-06 18:31:58,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:31:58,961 INFO L85 PathProgramCache]: Analyzing trace with hash 617794544, now seen corresponding path program 1 times [2021-12-06 18:31:58,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:31:58,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604653338] [2021-12-06 18:31:58,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:31:58,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:31:59,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:31:59,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:31:59,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:31:59,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604653338] [2021-12-06 18:31:59,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604653338] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:31:59,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:31:59,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:31:59,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408173310] [2021-12-06 18:31:59,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:31:59,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:31:59,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:31:59,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:31:59,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:31:59,144 INFO L87 Difference]: Start difference. First operand has 34 states, 22 states have (on average 1.5) internal successors, (33), 28 states have internal predecessors, (33), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:31:59,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:31:59,238 INFO L93 Difference]: Finished difference Result 81 states and 99 transitions. [2021-12-06 18:31:59,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:31:59,241 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-06 18:31:59,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:31:59,250 INFO L225 Difference]: With dead ends: 81 [2021-12-06 18:31:59,250 INFO L226 Difference]: Without dead ends: 43 [2021-12-06 18:31:59,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:31:59,258 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 42 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:31:59,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 101 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:31:59,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-12-06 18:31:59,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2021-12-06 18:31:59,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 31 states have internal predecessors, (37), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 18:31:59,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2021-12-06 18:31:59,300 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 8 [2021-12-06 18:31:59,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:31:59,301 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2021-12-06 18:31:59,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:31:59,301 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2021-12-06 18:31:59,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 18:31:59,302 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:31:59,302 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:31:59,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 18:31:59,303 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-06 18:31:59,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:31:59,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1971768732, now seen corresponding path program 1 times [2021-12-06 18:31:59,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:31:59,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825039683] [2021-12-06 18:31:59,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:31:59,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:31:59,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:31:59,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:31:59,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:31:59,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825039683] [2021-12-06 18:31:59,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825039683] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:31:59,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:31:59,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:31:59,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425045695] [2021-12-06 18:31:59,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:31:59,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:31:59,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:31:59,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:31:59,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:31:59,354 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:31:59,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:31:59,410 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2021-12-06 18:31:59,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:31:59,411 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-06 18:31:59,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:31:59,412 INFO L225 Difference]: With dead ends: 59 [2021-12-06 18:31:59,412 INFO L226 Difference]: Without dead ends: 57 [2021-12-06 18:31:59,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:31:59,414 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 36 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:31:59,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 71 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:31:59,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-12-06 18:31:59,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 52. [2021-12-06 18:31:59,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 38 states have (on average 1.368421052631579) internal successors, (52), 42 states have internal predecessors, (52), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-06 18:31:59,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 65 transitions. [2021-12-06 18:31:59,424 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 65 transitions. Word has length 9 [2021-12-06 18:31:59,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:31:59,424 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 65 transitions. [2021-12-06 18:31:59,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:31:59,424 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 65 transitions. [2021-12-06 18:31:59,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-06 18:31:59,425 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:31:59,425 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:31:59,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 18:31:59,425 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-06 18:31:59,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:31:59,426 INFO L85 PathProgramCache]: Analyzing trace with hash -323955617, now seen corresponding path program 1 times [2021-12-06 18:31:59,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:31:59,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158478089] [2021-12-06 18:31:59,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:31:59,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:31:59,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:31:59,464 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:31:59,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:31:59,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158478089] [2021-12-06 18:31:59,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158478089] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:31:59,465 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:31:59,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:31:59,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472396887] [2021-12-06 18:31:59,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:31:59,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:31:59,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:31:59,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:31:59,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:31:59,466 INFO L87 Difference]: Start difference. First operand 52 states and 65 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:31:59,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:31:59,511 INFO L93 Difference]: Finished difference Result 77 states and 97 transitions. [2021-12-06 18:31:59,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:31:59,511 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-12-06 18:31:59,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:31:59,513 INFO L225 Difference]: With dead ends: 77 [2021-12-06 18:31:59,513 INFO L226 Difference]: Without dead ends: 76 [2021-12-06 18:31:59,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:31:59,514 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 41 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:31:59,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 62 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:31:59,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-12-06 18:31:59,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 67. [2021-12-06 18:31:59,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 50 states have (on average 1.36) internal successors, (68), 54 states have internal predecessors, (68), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-06 18:31:59,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 85 transitions. [2021-12-06 18:31:59,526 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 85 transitions. Word has length 14 [2021-12-06 18:31:59,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:31:59,527 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 85 transitions. [2021-12-06 18:31:59,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:31:59,527 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 85 transitions. [2021-12-06 18:31:59,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-06 18:31:59,528 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:31:59,528 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:31:59,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 18:31:59,528 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-06 18:31:59,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:31:59,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1630133947, now seen corresponding path program 1 times [2021-12-06 18:31:59,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:31:59,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900734980] [2021-12-06 18:31:59,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:31:59,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:31:59,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:31:59,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:31:59,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:31:59,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:31:59,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:31:59,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900734980] [2021-12-06 18:31:59,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900734980] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:31:59,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:31:59,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:31:59,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765818832] [2021-12-06 18:31:59,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:31:59,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:31:59,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:31:59,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:31:59,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:31:59,572 INFO L87 Difference]: Start difference. First operand 67 states and 85 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:31:59,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:31:59,609 INFO L93 Difference]: Finished difference Result 121 states and 155 transitions. [2021-12-06 18:31:59,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:31:59,609 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-12-06 18:31:59,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:31:59,611 INFO L225 Difference]: With dead ends: 121 [2021-12-06 18:31:59,611 INFO L226 Difference]: Without dead ends: 85 [2021-12-06 18:31:59,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:31:59,613 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 25 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:31:59,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 93 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:31:59,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-12-06 18:31:59,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 76. [2021-12-06 18:31:59,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 58 states have (on average 1.3448275862068966) internal successors, (78), 61 states have internal predecessors, (78), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-12-06 18:31:59,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 97 transitions. [2021-12-06 18:31:59,625 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 97 transitions. Word has length 15 [2021-12-06 18:31:59,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:31:59,625 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 97 transitions. [2021-12-06 18:31:59,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:31:59,626 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 97 transitions. [2021-12-06 18:31:59,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-06 18:31:59,626 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:31:59,626 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:31:59,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 18:31:59,627 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-06 18:31:59,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:31:59,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1005448143, now seen corresponding path program 1 times [2021-12-06 18:31:59,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:31:59,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029678864] [2021-12-06 18:31:59,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:31:59,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:31:59,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:31:59,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:31:59,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:31:59,663 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:31:59,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:31:59,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029678864] [2021-12-06 18:31:59,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029678864] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:31:59,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:31:59,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:31:59,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177506806] [2021-12-06 18:31:59,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:31:59,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:31:59,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:31:59,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:31:59,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:31:59,665 INFO L87 Difference]: Start difference. First operand 76 states and 97 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:31:59,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:31:59,708 INFO L93 Difference]: Finished difference Result 102 states and 131 transitions. [2021-12-06 18:31:59,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:31:59,709 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-12-06 18:31:59,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:31:59,711 INFO L225 Difference]: With dead ends: 102 [2021-12-06 18:31:59,711 INFO L226 Difference]: Without dead ends: 101 [2021-12-06 18:31:59,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:31:59,713 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 28 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:31:59,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 106 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:31:59,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-12-06 18:31:59,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 91. [2021-12-06 18:31:59,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 73 states have internal predecessors, (93), 12 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-06 18:31:59,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 116 transitions. [2021-12-06 18:31:59,730 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 116 transitions. Word has length 16 [2021-12-06 18:31:59,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:31:59,730 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 116 transitions. [2021-12-06 18:31:59,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:31:59,730 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 116 transitions. [2021-12-06 18:31:59,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-06 18:31:59,731 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:31:59,731 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:31:59,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 18:31:59,731 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-06 18:31:59,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:31:59,732 INFO L85 PathProgramCache]: Analyzing trace with hash -385899469, now seen corresponding path program 1 times [2021-12-06 18:31:59,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:31:59,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886788313] [2021-12-06 18:31:59,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:31:59,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:31:59,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:31:59,770 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:31:59,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:31:59,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886788313] [2021-12-06 18:31:59,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886788313] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:31:59,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:31:59,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:31:59,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367363330] [2021-12-06 18:31:59,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:31:59,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:31:59,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:31:59,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:31:59,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:31:59,772 INFO L87 Difference]: Start difference. First operand 91 states and 116 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:31:59,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:31:59,804 INFO L93 Difference]: Finished difference Result 133 states and 169 transitions. [2021-12-06 18:31:59,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 18:31:59,805 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-06 18:31:59,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:31:59,806 INFO L225 Difference]: With dead ends: 133 [2021-12-06 18:31:59,806 INFO L226 Difference]: Without dead ends: 59 [2021-12-06 18:31:59,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:31:59,808 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 23 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:31:59,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 64 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:31:59,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-12-06 18:31:59,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 51. [2021-12-06 18:31:59,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 40 states have (on average 1.25) internal successors, (50), 41 states have internal predecessors, (50), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-06 18:31:59,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2021-12-06 18:31:59,818 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 19 [2021-12-06 18:31:59,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:31:59,818 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2021-12-06 18:31:59,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:31:59,818 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2021-12-06 18:31:59,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-06 18:31:59,819 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:31:59,819 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:31:59,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 18:31:59,819 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-06 18:31:59,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:31:59,820 INFO L85 PathProgramCache]: Analyzing trace with hash -773947711, now seen corresponding path program 1 times [2021-12-06 18:31:59,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:31:59,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885265384] [2021-12-06 18:31:59,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:31:59,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:31:59,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:31:59,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 18:31:59,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:31:59,874 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:31:59,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:31:59,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885265384] [2021-12-06 18:31:59,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885265384] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:31:59,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023547418] [2021-12-06 18:31:59,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:31:59,875 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:31:59,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:31:59,876 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:31:59,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 18:31:59,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:31:59,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 18:31:59,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:31:59,991 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:31:59,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:32:00,055 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:32:00,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023547418] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:32:00,055 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:32:00,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2021-12-06 18:32:00,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539466686] [2021-12-06 18:32:00,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:32:00,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 18:32:00,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:32:00,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 18:32:00,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-12-06 18:32:00,056 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 18:32:00,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:32:00,128 INFO L93 Difference]: Finished difference Result 67 states and 79 transitions. [2021-12-06 18:32:00,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 18:32:00,129 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 18 [2021-12-06 18:32:00,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:32:00,130 INFO L225 Difference]: With dead ends: 67 [2021-12-06 18:32:00,130 INFO L226 Difference]: Without dead ends: 66 [2021-12-06 18:32:00,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-12-06 18:32:00,131 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 42 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:32:00,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 106 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:32:00,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-12-06 18:32:00,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 57. [2021-12-06 18:32:00,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 45 states have internal predecessors, (55), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2021-12-06 18:32:00,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2021-12-06 18:32:00,137 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 18 [2021-12-06 18:32:00,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:32:00,138 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2021-12-06 18:32:00,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 18:32:00,138 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2021-12-06 18:32:00,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-06 18:32:00,138 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:32:00,139 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:32:00,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 18:32:00,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:32:00,340 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-06 18:32:00,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:32:00,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1777424789, now seen corresponding path program 1 times [2021-12-06 18:32:00,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:32:00,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27981652] [2021-12-06 18:32:00,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:32:00,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:32:00,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:00,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 18:32:00,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:00,417 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:32:00,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:32:00,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27981652] [2021-12-06 18:32:00,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27981652] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:32:00,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715547937] [2021-12-06 18:32:00,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:32:00,418 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:32:00,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:32:00,419 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:32:00,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 18:32:00,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:00,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 18:32:00,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:32:00,508 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:32:00,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:32:00,541 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:32:00,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715547937] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:32:00,541 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:32:00,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2021-12-06 18:32:00,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596728082] [2021-12-06 18:32:00,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:32:00,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 18:32:00,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:32:00,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 18:32:00,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:32:00,543 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 18:32:00,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:32:00,598 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2021-12-06 18:32:00,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 18:32:00,598 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2021-12-06 18:32:00,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:32:00,599 INFO L225 Difference]: With dead ends: 65 [2021-12-06 18:32:00,599 INFO L226 Difference]: Without dead ends: 64 [2021-12-06 18:32:00,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-12-06 18:32:00,601 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 22 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:32:00,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 102 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:32:00,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-12-06 18:32:00,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 57. [2021-12-06 18:32:00,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 45 states have (on average 1.1777777777777778) internal successors, (53), 45 states have internal predecessors, (53), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2021-12-06 18:32:00,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2021-12-06 18:32:00,609 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 19 [2021-12-06 18:32:00,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:32:00,609 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2021-12-06 18:32:00,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 18:32:00,609 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2021-12-06 18:32:00,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-06 18:32:00,610 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:32:00,610 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:32:00,630 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 18:32:00,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-12-06 18:32:00,811 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-06 18:32:00,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:32:00,812 INFO L85 PathProgramCache]: Analyzing trace with hash -211759156, now seen corresponding path program 1 times [2021-12-06 18:32:00,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:32:00,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398573021] [2021-12-06 18:32:00,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:32:00,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:32:00,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:00,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:32:00,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:00,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 18:32:00,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:00,921 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:32:00,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:32:00,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398573021] [2021-12-06 18:32:00,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398573021] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:32:00,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555380156] [2021-12-06 18:32:00,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:32:00,922 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:32:00,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:32:00,922 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:32:00,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 18:32:00,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:00,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 18:32:00,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:32:00,986 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:32:00,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:32:01,037 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:32:01,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555380156] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:32:01,038 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:32:01,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 12 [2021-12-06 18:32:01,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098309955] [2021-12-06 18:32:01,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:32:01,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 18:32:01,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:32:01,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 18:32:01,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-12-06 18:32:01,039 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand has 13 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 18:32:01,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:32:01,129 INFO L93 Difference]: Finished difference Result 94 states and 110 transitions. [2021-12-06 18:32:01,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 18:32:01,130 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2021-12-06 18:32:01,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:32:01,130 INFO L225 Difference]: With dead ends: 94 [2021-12-06 18:32:01,130 INFO L226 Difference]: Without dead ends: 93 [2021-12-06 18:32:01,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2021-12-06 18:32:01,131 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 36 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:32:01,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 85 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:32:01,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-12-06 18:32:01,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 80. [2021-12-06 18:32:01,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 63 states have (on average 1.1587301587301588) internal successors, (73), 63 states have internal predecessors, (73), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (10), 10 states have call predecessors, (10), 7 states have call successors, (10) [2021-12-06 18:32:01,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 92 transitions. [2021-12-06 18:32:01,142 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 92 transitions. Word has length 25 [2021-12-06 18:32:01,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:32:01,143 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 92 transitions. [2021-12-06 18:32:01,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 18:32:01,143 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 92 transitions. [2021-12-06 18:32:01,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-06 18:32:01,144 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:32:01,144 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:32:01,164 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 18:32:01,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:32:01,346 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-06 18:32:01,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:32:01,347 INFO L85 PathProgramCache]: Analyzing trace with hash 2025400810, now seen corresponding path program 1 times [2021-12-06 18:32:01,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:32:01,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050757993] [2021-12-06 18:32:01,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:32:01,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:32:01,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:01,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:32:01,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:01,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 18:32:01,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:01,427 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 18:32:01,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:32:01,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050757993] [2021-12-06 18:32:01,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050757993] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:32:01,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107043981] [2021-12-06 18:32:01,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:32:01,428 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:32:01,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:32:01,428 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:32:01,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 18:32:01,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:01,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 18:32:01,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:32:01,505 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 18:32:01,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:32:01,543 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 18:32:01,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107043981] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:32:01,544 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:32:01,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2021-12-06 18:32:01,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690823636] [2021-12-06 18:32:01,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:32:01,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 18:32:01,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:32:01,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 18:32:01,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:32:01,545 INFO L87 Difference]: Start difference. First operand 80 states and 92 transitions. Second operand has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 18:32:01,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:32:01,587 INFO L93 Difference]: Finished difference Result 97 states and 113 transitions. [2021-12-06 18:32:01,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 18:32:01,587 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2021-12-06 18:32:01,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:32:01,588 INFO L225 Difference]: With dead ends: 97 [2021-12-06 18:32:01,588 INFO L226 Difference]: Without dead ends: 64 [2021-12-06 18:32:01,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-12-06 18:32:01,589 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 25 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:32:01,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 126 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:32:01,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-12-06 18:32:01,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 55. [2021-12-06 18:32:01,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 44 states have (on average 1.1136363636363635) internal successors, (49), 43 states have internal predecessors, (49), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2021-12-06 18:32:01,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2021-12-06 18:32:01,594 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 26 [2021-12-06 18:32:01,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:32:01,594 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2021-12-06 18:32:01,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 18:32:01,594 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2021-12-06 18:32:01,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-06 18:32:01,595 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:32:01,595 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:32:01,619 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 18:32:01,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-06 18:32:01,797 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-06 18:32:01,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:32:01,798 INFO L85 PathProgramCache]: Analyzing trace with hash 360381511, now seen corresponding path program 1 times [2021-12-06 18:32:01,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:32:01,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867492313] [2021-12-06 18:32:01,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:32:01,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:32:01,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:01,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 18:32:01,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:01,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:32:01,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:01,902 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:32:01,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:32:01,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867492313] [2021-12-06 18:32:01,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867492313] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:32:01,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785437129] [2021-12-06 18:32:01,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:32:01,902 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:32:01,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:32:01,903 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:32:01,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 18:32:01,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:01,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 18:32:01,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:32:01,993 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:32:01,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:32:02,133 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:32:02,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785437129] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:32:02,133 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:32:02,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2021-12-06 18:32:02,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842258206] [2021-12-06 18:32:02,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:32:02,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-06 18:32:02,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:32:02,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-06 18:32:02,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2021-12-06 18:32:02,135 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 18 states have internal predecessors, (52), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-12-06 18:32:02,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:32:02,304 INFO L93 Difference]: Finished difference Result 87 states and 100 transitions. [2021-12-06 18:32:02,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 18:32:02,305 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 18 states have internal predecessors, (52), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 29 [2021-12-06 18:32:02,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:32:02,306 INFO L225 Difference]: With dead ends: 87 [2021-12-06 18:32:02,306 INFO L226 Difference]: Without dead ends: 86 [2021-12-06 18:32:02,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=196, Invalid=796, Unknown=0, NotChecked=0, Total=992 [2021-12-06 18:32:02,307 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 100 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:32:02,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 145 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:32:02,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-12-06 18:32:02,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 65. [2021-12-06 18:32:02,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 51 states have internal predecessors, (57), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (11), 9 states have call predecessors, (11), 5 states have call successors, (11) [2021-12-06 18:32:02,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 74 transitions. [2021-12-06 18:32:02,312 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 74 transitions. Word has length 29 [2021-12-06 18:32:02,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:32:02,312 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 74 transitions. [2021-12-06 18:32:02,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 18 states have internal predecessors, (52), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-12-06 18:32:02,313 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 74 transitions. [2021-12-06 18:32:02,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-06 18:32:02,314 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:32:02,314 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:32:02,333 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 18:32:02,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-06 18:32:02,515 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-06 18:32:02,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:32:02,516 INFO L85 PathProgramCache]: Analyzing trace with hash 358409096, now seen corresponding path program 1 times [2021-12-06 18:32:02,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:32:02,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250078380] [2021-12-06 18:32:02,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:32:02,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:32:02,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:02,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:32:02,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:02,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:32:02,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:02,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 18:32:02,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:02,706 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 18:32:02,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:32:02,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250078380] [2021-12-06 18:32:02,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250078380] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:32:02,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707617528] [2021-12-06 18:32:02,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:32:02,707 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:32:02,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:32:02,708 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:32:02,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 18:32:02,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:02,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 18:32:02,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:32:02,816 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 18:32:02,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:32:02,982 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 24 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 18:32:02,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707617528] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:32:02,982 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:32:02,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 19 [2021-12-06 18:32:02,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940016205] [2021-12-06 18:32:02,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:32:02,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-06 18:32:02,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:32:02,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-06 18:32:02,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2021-12-06 18:32:02,983 INFO L87 Difference]: Start difference. First operand 65 states and 74 transitions. Second operand has 20 states, 19 states have (on average 3.0) internal successors, (57), 18 states have internal predecessors, (57), 8 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2021-12-06 18:32:03,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:32:03,234 INFO L93 Difference]: Finished difference Result 128 states and 145 transitions. [2021-12-06 18:32:03,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-06 18:32:03,234 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.0) internal successors, (57), 18 states have internal predecessors, (57), 8 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) Word has length 36 [2021-12-06 18:32:03,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:32:03,236 INFO L225 Difference]: With dead ends: 128 [2021-12-06 18:32:03,236 INFO L226 Difference]: Without dead ends: 123 [2021-12-06 18:32:03,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=342, Invalid=1140, Unknown=0, NotChecked=0, Total=1482 [2021-12-06 18:32:03,237 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 115 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:32:03,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 104 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:32:03,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-12-06 18:32:03,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 69. [2021-12-06 18:32:03,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 55 states have (on average 1.0909090909090908) internal successors, (60), 54 states have internal predecessors, (60), 6 states have call successors, (6), 4 states have call predecessors, (6), 7 states have return successors, (12), 10 states have call predecessors, (12), 5 states have call successors, (12) [2021-12-06 18:32:03,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 78 transitions. [2021-12-06 18:32:03,247 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 78 transitions. Word has length 36 [2021-12-06 18:32:03,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:32:03,247 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 78 transitions. [2021-12-06 18:32:03,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.0) internal successors, (57), 18 states have internal predecessors, (57), 8 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2021-12-06 18:32:03,247 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 78 transitions. [2021-12-06 18:32:03,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-06 18:32:03,249 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:32:03,249 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:32:03,270 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 18:32:03,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:32:03,451 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-06 18:32:03,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:32:03,452 INFO L85 PathProgramCache]: Analyzing trace with hash -421481335, now seen corresponding path program 2 times [2021-12-06 18:32:03,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:32:03,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38104018] [2021-12-06 18:32:03,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:32:03,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:32:03,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:03,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 18:32:03,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:03,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:32:03,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:03,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:32:03,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:03,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:32:03,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:03,683 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-06 18:32:03,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:32:03,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38104018] [2021-12-06 18:32:03,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38104018] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:32:03,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881842486] [2021-12-06 18:32:03,684 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 18:32:03,684 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:32:03,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:32:03,685 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:32:03,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 18:32:03,716 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 18:32:03,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:32:03,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-06 18:32:03,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:32:03,883 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-06 18:32:03,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:32:04,538 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 10 proven. 54 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-06 18:32:04,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881842486] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:32:04,538 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:32:04,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 14] total 30 [2021-12-06 18:32:04,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744797178] [2021-12-06 18:32:04,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:32:04,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-12-06 18:32:04,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:32:04,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-12-06 18:32:04,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=794, Unknown=0, NotChecked=0, Total=930 [2021-12-06 18:32:04,540 INFO L87 Difference]: Start difference. First operand 69 states and 78 transitions. Second operand has 31 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 29 states have internal predecessors, (79), 8 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (12), 12 states have call predecessors, (12), 6 states have call successors, (12) [2021-12-06 18:32:04,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:32:04,994 INFO L93 Difference]: Finished difference Result 140 states and 162 transitions. [2021-12-06 18:32:04,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-12-06 18:32:04,994 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 29 states have internal predecessors, (79), 8 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (12), 12 states have call predecessors, (12), 6 states have call successors, (12) Word has length 51 [2021-12-06 18:32:04,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:32:04,995 INFO L225 Difference]: With dead ends: 140 [2021-12-06 18:32:04,996 INFO L226 Difference]: Without dead ends: 139 [2021-12-06 18:32:05,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 88 SyntacticMatches, 4 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=510, Invalid=2570, Unknown=0, NotChecked=0, Total=3080 [2021-12-06 18:32:05,003 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 170 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:32:05,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 184 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:32:05,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-12-06 18:32:05,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 89. [2021-12-06 18:32:05,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 71 states have (on average 1.0704225352112675) internal successors, (76), 70 states have internal predecessors, (76), 6 states have call successors, (6), 4 states have call predecessors, (6), 11 states have return successors, (20), 14 states have call predecessors, (20), 5 states have call successors, (20) [2021-12-06 18:32:05,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 102 transitions. [2021-12-06 18:32:05,010 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 102 transitions. Word has length 51 [2021-12-06 18:32:05,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:32:05,010 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 102 transitions. [2021-12-06 18:32:05,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 29 states have internal predecessors, (79), 8 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (12), 12 states have call predecessors, (12), 6 states have call successors, (12) [2021-12-06 18:32:05,010 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 102 transitions. [2021-12-06 18:32:05,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-06 18:32:05,011 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:32:05,011 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:32:05,037 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 18:32:05,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:32:05,212 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-06 18:32:05,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:32:05,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1225939680, now seen corresponding path program 2 times [2021-12-06 18:32:05,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:32:05,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491493930] [2021-12-06 18:32:05,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:32:05,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:32:05,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:05,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:32:05,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:05,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:32:05,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:05,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 18:32:05,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:05,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:32:05,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:05,358 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 29 proven. 15 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-06 18:32:05,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:32:05,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491493930] [2021-12-06 18:32:05,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491493930] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:32:05,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406704880] [2021-12-06 18:32:05,358 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 18:32:05,358 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:32:05,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:32:05,359 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:32:05,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 18:32:05,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 18:32:05,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:32:05,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 18:32:05,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:32:05,466 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 29 proven. 15 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-06 18:32:05,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:32:05,603 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 29 proven. 15 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-06 18:32:05,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406704880] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:32:05,603 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:32:05,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2021-12-06 18:32:05,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922259591] [2021-12-06 18:32:05,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:32:05,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-06 18:32:05,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:32:05,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-06 18:32:05,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2021-12-06 18:32:05,605 INFO L87 Difference]: Start difference. First operand 89 states and 102 transitions. Second operand has 20 states, 19 states have (on average 3.210526315789474) internal successors, (61), 18 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2021-12-06 18:32:05,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:32:05,736 INFO L93 Difference]: Finished difference Result 110 states and 125 transitions. [2021-12-06 18:32:05,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 18:32:05,736 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.210526315789474) internal successors, (61), 18 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) Word has length 47 [2021-12-06 18:32:05,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:32:05,737 INFO L225 Difference]: With dead ends: 110 [2021-12-06 18:32:05,737 INFO L226 Difference]: Without dead ends: 105 [2021-12-06 18:32:05,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=187, Invalid=743, Unknown=0, NotChecked=0, Total=930 [2021-12-06 18:32:05,739 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 71 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:32:05,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 183 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:32:05,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-12-06 18:32:05,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 99. [2021-12-06 18:32:05,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 79 states have (on average 1.0632911392405062) internal successors, (84), 78 states have internal predecessors, (84), 6 states have call successors, (6), 4 states have call predecessors, (6), 13 states have return successors, (22), 16 states have call predecessors, (22), 5 states have call successors, (22) [2021-12-06 18:32:05,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 112 transitions. [2021-12-06 18:32:05,745 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 112 transitions. Word has length 47 [2021-12-06 18:32:05,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:32:05,745 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 112 transitions. [2021-12-06 18:32:05,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.210526315789474) internal successors, (61), 18 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2021-12-06 18:32:05,745 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 112 transitions. [2021-12-06 18:32:05,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-12-06 18:32:05,747 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:32:05,747 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 7, 7, 7, 7, 6, 5, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:32:05,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-06 18:32:05,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-06 18:32:05,949 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-06 18:32:05,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:32:05,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1983155908, now seen corresponding path program 3 times [2021-12-06 18:32:05,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:32:05,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785303572] [2021-12-06 18:32:05,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:32:05,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:32:05,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:06,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:32:06,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:06,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:32:06,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:06,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 18:32:06,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:06,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:32:06,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:06,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:32:06,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:06,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:32:06,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:06,144 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 6 proven. 171 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-12-06 18:32:06,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:32:06,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785303572] [2021-12-06 18:32:06,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785303572] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:32:06,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700086795] [2021-12-06 18:32:06,145 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 18:32:06,145 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:32:06,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:32:06,146 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:32:06,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 18:32:06,186 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-12-06 18:32:06,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:32:06,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-06 18:32:06,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:32:06,375 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 75 proven. 96 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-12-06 18:32:06,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:32:06,813 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 85 proven. 96 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-12-06 18:32:06,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700086795] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:32:06,814 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:32:06,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 14] total 36 [2021-12-06 18:32:06,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046161909] [2021-12-06 18:32:06,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:32:06,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-12-06 18:32:06,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:32:06,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-12-06 18:32:06,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1176, Unknown=0, NotChecked=0, Total=1332 [2021-12-06 18:32:06,815 INFO L87 Difference]: Start difference. First operand 99 states and 112 transitions. Second operand has 37 states, 36 states have (on average 2.9444444444444446) internal successors, (106), 34 states have internal predecessors, (106), 12 states have call successors, (18), 4 states have call predecessors, (18), 10 states have return successors, (17), 17 states have call predecessors, (17), 11 states have call successors, (17) [2021-12-06 18:32:07,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:32:07,655 INFO L93 Difference]: Finished difference Result 208 states and 237 transitions. [2021-12-06 18:32:07,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-12-06 18:32:07,656 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.9444444444444446) internal successors, (106), 34 states have internal predecessors, (106), 12 states have call successors, (18), 4 states have call predecessors, (18), 10 states have return successors, (17), 17 states have call predecessors, (17), 11 states have call successors, (17) Word has length 81 [2021-12-06 18:32:07,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:32:07,657 INFO L225 Difference]: With dead ends: 208 [2021-12-06 18:32:07,658 INFO L226 Difference]: Without dead ends: 191 [2021-12-06 18:32:07,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 153 SyntacticMatches, 5 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1348 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=988, Invalid=5174, Unknown=0, NotChecked=0, Total=6162 [2021-12-06 18:32:07,661 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 180 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:32:07,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 248 Invalid, 1113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 18:32:07,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-12-06 18:32:07,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 119. [2021-12-06 18:32:07,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 95 states have (on average 1.0526315789473684) internal successors, (100), 94 states have internal predecessors, (100), 6 states have call successors, (6), 4 states have call predecessors, (6), 17 states have return successors, (26), 20 states have call predecessors, (26), 5 states have call successors, (26) [2021-12-06 18:32:07,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 132 transitions. [2021-12-06 18:32:07,669 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 132 transitions. Word has length 81 [2021-12-06 18:32:07,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:32:07,669 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 132 transitions. [2021-12-06 18:32:07,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.9444444444444446) internal successors, (106), 34 states have internal predecessors, (106), 12 states have call successors, (18), 4 states have call predecessors, (18), 10 states have return successors, (17), 17 states have call predecessors, (17), 11 states have call successors, (17) [2021-12-06 18:32:07,670 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 132 transitions. [2021-12-06 18:32:07,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-06 18:32:07,671 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:32:07,671 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:32:07,690 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-06 18:32:07,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-06 18:32:07,873 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-06 18:32:07,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:32:07,874 INFO L85 PathProgramCache]: Analyzing trace with hash 274461965, now seen corresponding path program 3 times [2021-12-06 18:32:07,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:32:07,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154472976] [2021-12-06 18:32:07,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:32:07,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:32:07,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:07,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 18:32:07,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:07,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:32:07,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:08,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:32:08,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:08,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:32:08,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:08,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:32:08,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:08,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:32:08,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:08,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:32:08,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:08,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:32:08,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:08,198 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2021-12-06 18:32:08,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:32:08,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154472976] [2021-12-06 18:32:08,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154472976] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:32:08,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812550655] [2021-12-06 18:32:08,198 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 18:32:08,199 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:32:08,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:32:08,199 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:32:08,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 18:32:08,250 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-12-06 18:32:08,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:32:08,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 34 conjunts are in the unsatisfiable core [2021-12-06 18:32:08,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:32:08,558 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2021-12-06 18:32:08,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:32:17,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812550655] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:32:17,872 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:32:17,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 30 [2021-12-06 18:32:17,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609983813] [2021-12-06 18:32:17,872 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:32:17,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-12-06 18:32:17,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:32:17,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-12-06 18:32:17,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1284, Unknown=3, NotChecked=0, Total=1482 [2021-12-06 18:32:17,873 INFO L87 Difference]: Start difference. First operand 119 states and 132 transitions. Second operand has 31 states, 30 states have (on average 2.533333333333333) internal successors, (76), 30 states have internal predecessors, (76), 4 states have call successors, (4), 2 states have call predecessors, (4), 8 states have return successors, (16), 16 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-06 18:32:18,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:32:18,555 INFO L93 Difference]: Finished difference Result 166 states and 181 transitions. [2021-12-06 18:32:18,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-12-06 18:32:18,556 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.533333333333333) internal successors, (76), 30 states have internal predecessors, (76), 4 states have call successors, (4), 2 states have call predecessors, (4), 8 states have return successors, (16), 16 states have call predecessors, (16), 3 states have call successors, (16) Word has length 95 [2021-12-06 18:32:18,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:32:18,557 INFO L225 Difference]: With dead ends: 166 [2021-12-06 18:32:18,557 INFO L226 Difference]: Without dead ends: 165 [2021-12-06 18:32:18,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 103 SyntacticMatches, 6 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=514, Invalid=3515, Unknown=3, NotChecked=0, Total=4032 [2021-12-06 18:32:18,558 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 191 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 1215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:32:18,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 386 Invalid, 1215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1116 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 18:32:18,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-12-06 18:32:18,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 124. [2021-12-06 18:32:18,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 99 states have (on average 1.0505050505050506) internal successors, (104), 98 states have internal predecessors, (104), 6 states have call successors, (6), 4 states have call predecessors, (6), 18 states have return successors, (28), 21 states have call predecessors, (28), 5 states have call successors, (28) [2021-12-06 18:32:18,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 138 transitions. [2021-12-06 18:32:18,564 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 138 transitions. Word has length 95 [2021-12-06 18:32:18,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:32:18,565 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 138 transitions. [2021-12-06 18:32:18,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.533333333333333) internal successors, (76), 30 states have internal predecessors, (76), 4 states have call successors, (4), 2 states have call predecessors, (4), 8 states have return successors, (16), 16 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-06 18:32:18,565 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 138 transitions. [2021-12-06 18:32:18,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-06 18:32:18,566 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:32:18,566 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:32:18,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-06 18:32:18,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-06 18:32:18,768 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-06 18:32:18,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:32:18,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1943630407, now seen corresponding path program 4 times [2021-12-06 18:32:18,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:32:18,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270376948] [2021-12-06 18:32:18,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:32:18,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:32:18,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:18,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 18:32:18,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:18,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:32:18,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:18,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:32:18,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:18,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:32:18,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:19,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:32:19,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:19,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:32:19,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:19,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:32:19,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:19,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:32:19,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:19,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:32:19,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:19,181 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 0 proven. 239 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2021-12-06 18:32:19,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:32:19,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270376948] [2021-12-06 18:32:19,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270376948] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:32:19,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645602610] [2021-12-06 18:32:19,182 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 18:32:19,182 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:32:19,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:32:19,183 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:32:19,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-06 18:32:19,251 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 18:32:19,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:32:19,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 38 conjunts are in the unsatisfiable core [2021-12-06 18:32:19,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:32:19,708 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 0 proven. 239 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2021-12-06 18:32:19,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:32:46,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645602610] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:32:46,257 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:32:46,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 33 [2021-12-06 18:32:46,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350577415] [2021-12-06 18:32:46,257 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:32:46,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-12-06 18:32:46,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:32:46,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-12-06 18:32:46,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1308, Unknown=12, NotChecked=0, Total=1482 [2021-12-06 18:32:46,259 INFO L87 Difference]: Start difference. First operand 124 states and 138 transitions. Second operand has 34 states, 33 states have (on average 2.515151515151515) internal successors, (83), 33 states have internal predecessors, (83), 4 states have call successors, (4), 2 states have call predecessors, (4), 9 states have return successors, (18), 18 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-06 18:32:47,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:32:47,597 INFO L93 Difference]: Finished difference Result 184 states and 201 transitions. [2021-12-06 18:32:47,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-12-06 18:32:47,597 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.515151515151515) internal successors, (83), 33 states have internal predecessors, (83), 4 states have call successors, (4), 2 states have call predecessors, (4), 9 states have return successors, (18), 18 states have call predecessors, (18), 3 states have call successors, (18) Word has length 106 [2021-12-06 18:32:47,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:32:47,598 INFO L225 Difference]: With dead ends: 184 [2021-12-06 18:32:47,598 INFO L226 Difference]: Without dead ends: 183 [2021-12-06 18:32:47,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 111 SyntacticMatches, 7 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 759 ImplicationChecksByTransitivity, 25.9s TimeCoverageRelationStatistics Valid=466, Invalid=3944, Unknown=12, NotChecked=0, Total=4422 [2021-12-06 18:32:47,600 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 146 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 1521 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 1595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 18:32:47,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 516 Invalid, 1595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1521 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 18:32:47,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-12-06 18:32:47,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 129. [2021-12-06 18:32:47,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 103 states have (on average 1.0485436893203883) internal successors, (108), 102 states have internal predecessors, (108), 6 states have call successors, (6), 4 states have call predecessors, (6), 19 states have return successors, (30), 22 states have call predecessors, (30), 5 states have call successors, (30) [2021-12-06 18:32:47,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 144 transitions. [2021-12-06 18:32:47,607 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 144 transitions. Word has length 106 [2021-12-06 18:32:47,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:32:47,607 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 144 transitions. [2021-12-06 18:32:47,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.515151515151515) internal successors, (83), 33 states have internal predecessors, (83), 4 states have call successors, (4), 2 states have call predecessors, (4), 9 states have return successors, (18), 18 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-06 18:32:47,607 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 144 transitions. [2021-12-06 18:32:47,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-06 18:32:47,608 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:32:47,608 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:32:47,628 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-06 18:32:47,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-06 18:32:47,809 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-06 18:32:47,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:32:47,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1337179471, now seen corresponding path program 5 times [2021-12-06 18:32:47,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:32:47,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300798217] [2021-12-06 18:32:47,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:32:47,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:32:47,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:47,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 18:32:47,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:47,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:32:47,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:47,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:32:47,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:48,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:32:48,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:48,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:32:48,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:48,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:32:48,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:48,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:32:48,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:48,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:32:48,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:48,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:32:48,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:48,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:32:48,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:48,381 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 0 proven. 291 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-12-06 18:32:48,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:32:48,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300798217] [2021-12-06 18:32:48,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300798217] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:32:48,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255784130] [2021-12-06 18:32:48,381 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 18:32:48,381 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:32:48,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:32:48,382 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:32:48,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-06 18:32:48,474 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-12-06 18:32:48,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:32:48,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 42 conjunts are in the unsatisfiable core [2021-12-06 18:32:48,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:32:49,137 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 0 proven. 291 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-12-06 18:32:49,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:32:50,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255784130] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:32:50,908 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:32:50,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 36 [2021-12-06 18:32:50,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111415943] [2021-12-06 18:32:50,908 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:32:50,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-12-06 18:32:50,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:32:50,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-12-06 18:32:50,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1364, Unknown=0, NotChecked=0, Total=1482 [2021-12-06 18:32:50,909 INFO L87 Difference]: Start difference. First operand 129 states and 144 transitions. Second operand has 37 states, 36 states have (on average 2.5) internal successors, (90), 36 states have internal predecessors, (90), 4 states have call successors, (4), 2 states have call predecessors, (4), 10 states have return successors, (20), 20 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-06 18:32:52,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:32:52,514 INFO L93 Difference]: Finished difference Result 202 states and 221 transitions. [2021-12-06 18:32:52,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-12-06 18:32:52,515 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.5) internal successors, (90), 36 states have internal predecessors, (90), 4 states have call successors, (4), 2 states have call predecessors, (4), 10 states have return successors, (20), 20 states have call predecessors, (20), 3 states have call successors, (20) Word has length 117 [2021-12-06 18:32:52,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:32:52,516 INFO L225 Difference]: With dead ends: 202 [2021-12-06 18:32:52,516 INFO L226 Difference]: Without dead ends: 201 [2021-12-06 18:32:52,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 119 SyntacticMatches, 8 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 873 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=402, Invalid=4568, Unknown=0, NotChecked=0, Total=4970 [2021-12-06 18:32:52,518 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 161 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 1658 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 1741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 18:32:52,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 524 Invalid, 1741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1658 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 18:32:52,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-12-06 18:32:52,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 134. [2021-12-06 18:32:52,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 107 states have (on average 1.0467289719626167) internal successors, (112), 106 states have internal predecessors, (112), 6 states have call successors, (6), 4 states have call predecessors, (6), 20 states have return successors, (32), 23 states have call predecessors, (32), 5 states have call successors, (32) [2021-12-06 18:32:52,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 150 transitions. [2021-12-06 18:32:52,527 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 150 transitions. Word has length 117 [2021-12-06 18:32:52,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:32:52,528 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 150 transitions. [2021-12-06 18:32:52,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.5) internal successors, (90), 36 states have internal predecessors, (90), 4 states have call successors, (4), 2 states have call predecessors, (4), 10 states have return successors, (20), 20 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-06 18:32:52,528 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 150 transitions. [2021-12-06 18:32:52,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-06 18:32:52,530 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:32:52,530 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:32:52,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-06 18:32:52,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-06 18:32:52,731 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-06 18:32:52,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:32:52,732 INFO L85 PathProgramCache]: Analyzing trace with hash 777113877, now seen corresponding path program 6 times [2021-12-06 18:32:52,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:32:52,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126038220] [2021-12-06 18:32:52,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:32:52,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:32:52,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:52,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 18:32:52,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:52,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:32:52,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:52,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:32:52,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:52,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:32:53,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:53,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:32:53,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:53,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:32:53,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:53,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:32:53,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:53,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:32:53,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:53,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:32:53,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:53,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:32:53,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:53,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:32:53,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:53,396 INFO L134 CoverageAnalysis]: Checked inductivity of 772 backedges. 0 proven. 474 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2021-12-06 18:32:53,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:32:53,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126038220] [2021-12-06 18:32:53,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126038220] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:32:53,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721850059] [2021-12-06 18:32:53,397 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 18:32:53,397 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:32:53,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:32:53,398 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:32:53,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-06 18:32:53,503 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2021-12-06 18:32:53,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:32:53,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 50 conjunts are in the unsatisfiable core [2021-12-06 18:32:53,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:32:54,297 INFO L134 CoverageAnalysis]: Checked inductivity of 772 backedges. 0 proven. 474 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2021-12-06 18:32:54,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:33:05,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721850059] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:33:05,634 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:33:05,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 39 [2021-12-06 18:33:05,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53932649] [2021-12-06 18:33:05,634 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:33:05,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-12-06 18:33:05,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:33:05,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-12-06 18:33:05,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1785, Unknown=3, NotChecked=0, Total=1980 [2021-12-06 18:33:05,636 INFO L87 Difference]: Start difference. First operand 134 states and 150 transitions. Second operand has 40 states, 39 states have (on average 2.4871794871794872) internal successors, (97), 39 states have internal predecessors, (97), 4 states have call successors, (5), 2 states have call predecessors, (5), 11 states have return successors, (22), 22 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-06 18:33:07,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:33:07,529 INFO L93 Difference]: Finished difference Result 220 states and 241 transitions. [2021-12-06 18:33:07,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-12-06 18:33:07,530 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 2.4871794871794872) internal successors, (97), 39 states have internal predecessors, (97), 4 states have call successors, (5), 2 states have call predecessors, (5), 11 states have return successors, (22), 22 states have call predecessors, (22), 3 states have call successors, (22) Word has length 140 [2021-12-06 18:33:07,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:33:07,531 INFO L225 Difference]: With dead ends: 220 [2021-12-06 18:33:07,531 INFO L226 Difference]: Without dead ends: 219 [2021-12-06 18:33:07,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 149 SyntacticMatches, 9 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1173 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=585, Invalid=5892, Unknown=3, NotChecked=0, Total=6480 [2021-12-06 18:33:07,533 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 179 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 1953 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 2048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 18:33:07,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [202 Valid, 560 Invalid, 2048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1953 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-06 18:33:07,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-12-06 18:33:07,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 139. [2021-12-06 18:33:07,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 111 states have (on average 1.045045045045045) internal successors, (116), 110 states have internal predecessors, (116), 6 states have call successors, (6), 4 states have call predecessors, (6), 21 states have return successors, (34), 24 states have call predecessors, (34), 5 states have call successors, (34) [2021-12-06 18:33:07,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 156 transitions. [2021-12-06 18:33:07,540 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 156 transitions. Word has length 140 [2021-12-06 18:33:07,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:33:07,540 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 156 transitions. [2021-12-06 18:33:07,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 2.4871794871794872) internal successors, (97), 39 states have internal predecessors, (97), 4 states have call successors, (5), 2 states have call predecessors, (5), 11 states have return successors, (22), 22 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-06 18:33:07,540 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 156 transitions. [2021-12-06 18:33:07,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-12-06 18:33:07,541 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:33:07,541 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 11, 11, 11, 11, 10, 9, 9, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:33:07,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-12-06 18:33:07,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:33:07,743 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-06 18:33:07,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:33:07,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1210211640, now seen corresponding path program 4 times [2021-12-06 18:33:07,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:33:07,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559026939] [2021-12-06 18:33:07,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:33:07,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:33:07,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:07,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:33:07,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:07,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:07,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:07,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 18:33:07,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:07,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:07,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:07,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:07,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:08,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:08,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:08,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:08,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:08,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:08,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:08,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:08,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:08,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:08,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:08,240 INFO L134 CoverageAnalysis]: Checked inductivity of 589 backedges. 6 proven. 413 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2021-12-06 18:33:08,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:33:08,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559026939] [2021-12-06 18:33:08,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559026939] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:33:08,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743127417] [2021-12-06 18:33:08,241 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 18:33:08,241 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:33:08,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:33:08,242 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:33:08,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-06 18:33:08,358 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 18:33:08,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:33:08,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 42 conjunts are in the unsatisfiable core [2021-12-06 18:33:08,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:33:08,948 INFO L134 CoverageAnalysis]: Checked inductivity of 589 backedges. 6 proven. 413 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2021-12-06 18:33:08,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:33:09,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743127417] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:33:09,931 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:33:09,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 34 [2021-12-06 18:33:09,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803649776] [2021-12-06 18:33:09,931 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:33:09,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-12-06 18:33:09,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:33:09,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-12-06 18:33:09,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1224, Unknown=0, NotChecked=0, Total=1332 [2021-12-06 18:33:09,932 INFO L87 Difference]: Start difference. First operand 139 states and 156 transitions. Second operand has 35 states, 34 states have (on average 2.764705882352941) internal successors, (94), 34 states have internal predecessors, (94), 7 states have call successors, (8), 2 states have call predecessors, (8), 10 states have return successors, (19), 18 states have call predecessors, (19), 6 states have call successors, (19) [2021-12-06 18:33:11,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:33:11,427 INFO L93 Difference]: Finished difference Result 242 states and 263 transitions. [2021-12-06 18:33:11,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-12-06 18:33:11,427 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.764705882352941) internal successors, (94), 34 states have internal predecessors, (94), 7 states have call successors, (8), 2 states have call predecessors, (8), 10 states have return successors, (19), 18 states have call predecessors, (19), 6 states have call successors, (19) Word has length 125 [2021-12-06 18:33:11,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:33:11,429 INFO L225 Difference]: With dead ends: 242 [2021-12-06 18:33:11,429 INFO L226 Difference]: Without dead ends: 239 [2021-12-06 18:33:11,430 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 134 SyntacticMatches, 6 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 826 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=489, Invalid=4341, Unknown=0, NotChecked=0, Total=4830 [2021-12-06 18:33:11,431 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 130 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 1927 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 2019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 18:33:11,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 497 Invalid, 2019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1927 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 18:33:11,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-12-06 18:33:11,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 202. [2021-12-06 18:33:11,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 161 states have (on average 1.0434782608695652) internal successors, (168), 160 states have internal predecessors, (168), 9 states have call successors, (9), 6 states have call predecessors, (9), 31 states have return successors, (45), 35 states have call predecessors, (45), 7 states have call successors, (45) [2021-12-06 18:33:11,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 222 transitions. [2021-12-06 18:33:11,439 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 222 transitions. Word has length 125 [2021-12-06 18:33:11,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:33:11,439 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 222 transitions. [2021-12-06 18:33:11,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.764705882352941) internal successors, (94), 34 states have internal predecessors, (94), 7 states have call successors, (8), 2 states have call predecessors, (8), 10 states have return successors, (19), 18 states have call predecessors, (19), 6 states have call successors, (19) [2021-12-06 18:33:11,439 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 222 transitions. [2021-12-06 18:33:11,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-06 18:33:11,441 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:33:11,441 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 12, 12, 12, 11, 11, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:33:11,460 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-12-06 18:33:11,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:33:11,642 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-06 18:33:11,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:33:11,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1537423565, now seen corresponding path program 7 times [2021-12-06 18:33:11,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:33:11,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645001188] [2021-12-06 18:33:11,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:33:11,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:33:11,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:11,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 18:33:11,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:11,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:11,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:11,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:11,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:11,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:11,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:11,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:11,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:11,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:11,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:12,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:12,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:12,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:12,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:12,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:12,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:12,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:12,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:12,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:12,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:12,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:12,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:12,371 INFO L134 CoverageAnalysis]: Checked inductivity of 907 backedges. 0 proven. 548 refuted. 0 times theorem prover too weak. 359 trivial. 0 not checked. [2021-12-06 18:33:12,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:33:12,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645001188] [2021-12-06 18:33:12,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645001188] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:33:12,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522659729] [2021-12-06 18:33:12,371 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 18:33:12,372 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:33:12,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:33:12,372 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:33:12,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-06 18:33:12,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:12,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 54 conjunts are in the unsatisfiable core [2021-12-06 18:33:12,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:33:13,375 INFO L134 CoverageAnalysis]: Checked inductivity of 907 backedges. 0 proven. 548 refuted. 0 times theorem prover too weak. 359 trivial. 0 not checked. [2021-12-06 18:33:13,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:33:16,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522659729] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:33:16,059 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:33:16,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 42 [2021-12-06 18:33:16,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624184603] [2021-12-06 18:33:16,060 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:33:16,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-12-06 18:33:16,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:33:16,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-12-06 18:33:16,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1842, Unknown=0, NotChecked=0, Total=1980 [2021-12-06 18:33:16,061 INFO L87 Difference]: Start difference. First operand 202 states and 222 transitions. Second operand has 43 states, 42 states have (on average 2.4761904761904763) internal successors, (104), 42 states have internal predecessors, (104), 4 states have call successors, (5), 2 states have call predecessors, (5), 12 states have return successors, (24), 24 states have call predecessors, (24), 3 states have call successors, (24) [2021-12-06 18:33:18,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:33:18,295 INFO L93 Difference]: Finished difference Result 314 states and 347 transitions. [2021-12-06 18:33:18,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-12-06 18:33:18,295 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 2.4761904761904763) internal successors, (104), 42 states have internal predecessors, (104), 4 states have call successors, (5), 2 states have call predecessors, (5), 12 states have return successors, (24), 24 states have call predecessors, (24), 3 states have call successors, (24) Word has length 151 [2021-12-06 18:33:18,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:33:18,297 INFO L225 Difference]: With dead ends: 314 [2021-12-06 18:33:18,297 INFO L226 Difference]: Without dead ends: 313 [2021-12-06 18:33:18,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 157 SyntacticMatches, 10 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1306 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=501, Invalid=6639, Unknown=0, NotChecked=0, Total=7140 [2021-12-06 18:33:18,300 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 274 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 2527 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 2682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 2527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:33:18,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 698 Invalid, 2682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 2527 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-06 18:33:18,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-12-06 18:33:18,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 207. [2021-12-06 18:33:18,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 165 states have (on average 1.0424242424242425) internal successors, (172), 164 states have internal predecessors, (172), 9 states have call successors, (9), 6 states have call predecessors, (9), 32 states have return successors, (47), 36 states have call predecessors, (47), 7 states have call successors, (47) [2021-12-06 18:33:18,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 228 transitions. [2021-12-06 18:33:18,308 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 228 transitions. Word has length 151 [2021-12-06 18:33:18,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:33:18,309 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 228 transitions. [2021-12-06 18:33:18,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 2.4761904761904763) internal successors, (104), 42 states have internal predecessors, (104), 4 states have call successors, (5), 2 states have call predecessors, (5), 12 states have return successors, (24), 24 states have call predecessors, (24), 3 states have call successors, (24) [2021-12-06 18:33:18,309 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 228 transitions. [2021-12-06 18:33:18,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-12-06 18:33:18,310 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:33:18,310 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 12, 12, 12, 12, 11, 10, 10, 9, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:33:18,330 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-12-06 18:33:18,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:33:18,512 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-06 18:33:18,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:33:18,513 INFO L85 PathProgramCache]: Analyzing trace with hash -2054517474, now seen corresponding path program 5 times [2021-12-06 18:33:18,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:33:18,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651416620] [2021-12-06 18:33:18,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:33:18,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:33:18,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:18,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:33:18,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:18,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:18,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:18,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 18:33:18,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:18,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:18,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:18,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:18,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:18,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:18,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:18,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:18,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:18,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:18,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:18,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:18,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:18,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:18,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:18,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:18,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:18,954 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 6 proven. 486 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2021-12-06 18:33:18,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:33:18,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651416620] [2021-12-06 18:33:18,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651416620] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:33:18,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989455635] [2021-12-06 18:33:18,955 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 18:33:18,955 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:33:18,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:33:18,955 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:33:18,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-06 18:33:19,079 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2021-12-06 18:33:19,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:33:19,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 42 conjunts are in the unsatisfiable core [2021-12-06 18:33:19,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:33:19,790 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 145 proven. 341 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2021-12-06 18:33:19,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:33:22,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989455635] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:33:22,984 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:33:22,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 23] total 39 [2021-12-06 18:33:22,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715908119] [2021-12-06 18:33:22,985 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:33:22,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-12-06 18:33:22,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:33:22,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-12-06 18:33:22,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1801, Unknown=0, NotChecked=0, Total=1980 [2021-12-06 18:33:22,986 INFO L87 Difference]: Start difference. First operand 207 states and 228 transitions. Second operand has 40 states, 39 states have (on average 2.8205128205128207) internal successors, (110), 38 states have internal predecessors, (110), 8 states have call successors, (12), 3 states have call predecessors, (12), 12 states have return successors, (22), 22 states have call predecessors, (22), 7 states have call successors, (22) [2021-12-06 18:33:26,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:33:26,016 INFO L93 Difference]: Finished difference Result 270 states and 294 transitions. [2021-12-06 18:33:26,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-12-06 18:33:26,017 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 2.8205128205128207) internal successors, (110), 38 states have internal predecessors, (110), 8 states have call successors, (12), 3 states have call predecessors, (12), 12 states have return successors, (22), 22 states have call predecessors, (22), 7 states have call successors, (22) Word has length 136 [2021-12-06 18:33:26,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:33:26,018 INFO L225 Difference]: With dead ends: 270 [2021-12-06 18:33:26,018 INFO L226 Difference]: Without dead ends: 263 [2021-12-06 18:33:26,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 145 SyntacticMatches, 9 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2057 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=998, Invalid=9102, Unknown=0, NotChecked=0, Total=10100 [2021-12-06 18:33:26,019 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 252 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 2813 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 2994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 2813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-06 18:33:26,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 653 Invalid, 2994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 2813 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-06 18:33:26,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-12-06 18:33:26,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 154. [2021-12-06 18:33:26,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 123 states have (on average 1.0406504065040652) internal successors, (128), 122 states have internal predecessors, (128), 6 states have call successors, (6), 4 states have call predecessors, (6), 24 states have return successors, (38), 27 states have call predecessors, (38), 5 states have call successors, (38) [2021-12-06 18:33:26,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 172 transitions. [2021-12-06 18:33:26,025 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 172 transitions. Word has length 136 [2021-12-06 18:33:26,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:33:26,026 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 172 transitions. [2021-12-06 18:33:26,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 2.8205128205128207) internal successors, (110), 38 states have internal predecessors, (110), 8 states have call successors, (12), 3 states have call predecessors, (12), 12 states have return successors, (22), 22 states have call predecessors, (22), 7 states have call successors, (22) [2021-12-06 18:33:26,026 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 172 transitions. [2021-12-06 18:33:26,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-06 18:33:26,027 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:33:26,027 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:33:26,047 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-12-06 18:33:26,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-12-06 18:33:26,229 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-06 18:33:26,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:33:26,230 INFO L85 PathProgramCache]: Analyzing trace with hash -333411757, now seen corresponding path program 8 times [2021-12-06 18:33:26,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:33:26,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447144525] [2021-12-06 18:33:26,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:33:26,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:33:26,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:26,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 18:33:26,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:26,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:26,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:26,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:26,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:26,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:26,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:26,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:26,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:26,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:26,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:26,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:26,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:26,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:26,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:26,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:26,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:26,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:26,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:26,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:26,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:26,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:26,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:26,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:26,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:26,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1053 backedges. 0 proven. 627 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked. [2021-12-06 18:33:26,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:33:26,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447144525] [2021-12-06 18:33:26,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447144525] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:33:26,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496172597] [2021-12-06 18:33:26,911 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 18:33:26,911 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:33:26,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:33:26,912 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:33:26,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-06 18:33:27,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 18:33:27,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:33:27,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 58 conjunts are in the unsatisfiable core [2021-12-06 18:33:27,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:33:28,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1053 backedges. 0 proven. 627 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked. [2021-12-06 18:33:28,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:33:31,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496172597] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:33:31,356 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:33:31,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 45 [2021-12-06 18:33:31,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637967776] [2021-12-06 18:33:31,356 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:33:31,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-12-06 18:33:31,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:33:31,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-12-06 18:33:31,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=2108, Unknown=0, NotChecked=0, Total=2256 [2021-12-06 18:33:31,357 INFO L87 Difference]: Start difference. First operand 154 states and 172 transitions. Second operand has 46 states, 45 states have (on average 2.466666666666667) internal successors, (111), 45 states have internal predecessors, (111), 4 states have call successors, (5), 2 states have call predecessors, (5), 13 states have return successors, (26), 26 states have call predecessors, (26), 3 states have call successors, (26) [2021-12-06 18:33:33,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:33:33,731 INFO L93 Difference]: Finished difference Result 250 states and 273 transitions. [2021-12-06 18:33:33,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-12-06 18:33:33,731 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.466666666666667) internal successors, (111), 45 states have internal predecessors, (111), 4 states have call successors, (5), 2 states have call predecessors, (5), 13 states have return successors, (26), 26 states have call predecessors, (26), 3 states have call successors, (26) Word has length 162 [2021-12-06 18:33:33,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:33:33,732 INFO L225 Difference]: With dead ends: 250 [2021-12-06 18:33:33,732 INFO L226 Difference]: Without dead ends: 249 [2021-12-06 18:33:33,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 168 SyntacticMatches, 11 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1470 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=524, Invalid=7486, Unknown=0, NotChecked=0, Total=8010 [2021-12-06 18:33:33,734 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 204 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 2779 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 2887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:33:33,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 754 Invalid, 2887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2779 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-06 18:33:33,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2021-12-06 18:33:33,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 159. [2021-12-06 18:33:33,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 127 states have (on average 1.0393700787401574) internal successors, (132), 126 states have internal predecessors, (132), 6 states have call successors, (6), 4 states have call predecessors, (6), 25 states have return successors, (40), 28 states have call predecessors, (40), 5 states have call successors, (40) [2021-12-06 18:33:33,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 178 transitions. [2021-12-06 18:33:33,740 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 178 transitions. Word has length 162 [2021-12-06 18:33:33,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:33:33,740 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 178 transitions. [2021-12-06 18:33:33,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.466666666666667) internal successors, (111), 45 states have internal predecessors, (111), 4 states have call successors, (5), 2 states have call predecessors, (5), 13 states have return successors, (26), 26 states have call predecessors, (26), 3 states have call successors, (26) [2021-12-06 18:33:33,741 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 178 transitions. [2021-12-06 18:33:33,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-06 18:33:33,742 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:33:33,742 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 13, 13, 13, 13, 12, 11, 11, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:33:33,762 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-12-06 18:33:33,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-12-06 18:33:33,942 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-06 18:33:33,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:33:33,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1488937782, now seen corresponding path program 6 times [2021-12-06 18:33:33,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:33:33,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101556966] [2021-12-06 18:33:33,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:33:33,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:33:33,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:33,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:33:33,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:33,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:34,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:34,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 18:33:34,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:34,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:34,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:34,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:34,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:34,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:34,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:34,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:34,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:34,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:34,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:34,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:34,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:34,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:34,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:34,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:34,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:34,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:34,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:34,417 INFO L134 CoverageAnalysis]: Checked inductivity of 836 backedges. 6 proven. 564 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2021-12-06 18:33:34,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:33:34,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101556966] [2021-12-06 18:33:34,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101556966] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:33:34,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528731917] [2021-12-06 18:33:34,418 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 18:33:34,418 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:33:34,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:33:34,418 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:33:34,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-06 18:33:34,575 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2021-12-06 18:33:34,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:33:34,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 46 conjunts are in the unsatisfiable core [2021-12-06 18:33:34,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:33:35,371 INFO L134 CoverageAnalysis]: Checked inductivity of 836 backedges. 159 proven. 405 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2021-12-06 18:33:35,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:33:37,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528731917] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:33:37,071 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:33:37,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 25] total 42 [2021-12-06 18:33:37,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658139189] [2021-12-06 18:33:37,072 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:33:37,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-12-06 18:33:37,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:33:37,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-12-06 18:33:37,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1846, Unknown=0, NotChecked=0, Total=1980 [2021-12-06 18:33:37,073 INFO L87 Difference]: Start difference. First operand 159 states and 178 transitions. Second operand has 43 states, 42 states have (on average 2.7857142857142856) internal successors, (117), 41 states have internal predecessors, (117), 8 states have call successors, (12), 3 states have call predecessors, (12), 13 states have return successors, (24), 24 states have call predecessors, (24), 7 states have call successors, (24) [2021-12-06 18:33:40,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:33:40,331 INFO L93 Difference]: Finished difference Result 288 states and 311 transitions. [2021-12-06 18:33:40,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-12-06 18:33:40,332 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 2.7857142857142856) internal successors, (117), 41 states have internal predecessors, (117), 8 states have call successors, (12), 3 states have call predecessors, (12), 13 states have return successors, (24), 24 states have call predecessors, (24), 7 states have call successors, (24) Word has length 147 [2021-12-06 18:33:40,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:33:40,333 INFO L225 Difference]: With dead ends: 288 [2021-12-06 18:33:40,333 INFO L226 Difference]: Without dead ends: 283 [2021-12-06 18:33:40,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 155 SyntacticMatches, 8 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2336 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=920, Invalid=10422, Unknown=0, NotChecked=0, Total=11342 [2021-12-06 18:33:40,335 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 270 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 3552 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 3751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 3552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-06 18:33:40,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 785 Invalid, 3751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 3552 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-06 18:33:40,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-12-06 18:33:40,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 164. [2021-12-06 18:33:40,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 131 states have (on average 1.0381679389312977) internal successors, (136), 130 states have internal predecessors, (136), 6 states have call successors, (6), 4 states have call predecessors, (6), 26 states have return successors, (41), 29 states have call predecessors, (41), 5 states have call successors, (41) [2021-12-06 18:33:40,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 183 transitions. [2021-12-06 18:33:40,341 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 183 transitions. Word has length 147 [2021-12-06 18:33:40,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:33:40,341 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 183 transitions. [2021-12-06 18:33:40,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 2.7857142857142856) internal successors, (117), 41 states have internal predecessors, (117), 8 states have call successors, (12), 3 states have call predecessors, (12), 13 states have return successors, (24), 24 states have call predecessors, (24), 7 states have call successors, (24) [2021-12-06 18:33:40,341 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 183 transitions. [2021-12-06 18:33:40,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-12-06 18:33:40,342 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:33:40,342 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 14, 13, 13, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:33:40,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-12-06 18:33:40,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-12-06 18:33:40,544 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-06 18:33:40,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:33:40,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1249721811, now seen corresponding path program 9 times [2021-12-06 18:33:40,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:33:40,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008853660] [2021-12-06 18:33:40,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:33:40,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:33:40,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:40,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 18:33:40,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:40,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:40,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:40,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:40,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:40,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:40,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:40,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:40,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:40,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:40,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:40,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:40,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:40,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:40,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:40,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:40,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:41,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:41,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:41,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:41,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:41,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:41,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:41,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:41,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:41,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:41,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:41,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 0 proven. 549 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2021-12-06 18:33:41,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:33:41,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008853660] [2021-12-06 18:33:41,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008853660] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:33:41,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822166734] [2021-12-06 18:33:41,255 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 18:33:41,255 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:33:41,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:33:41,255 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:33:41,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-06 18:33:41,444 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-12-06 18:33:41,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:33:41,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 58 conjunts are in the unsatisfiable core [2021-12-06 18:33:41,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:33:42,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 0 proven. 549 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2021-12-06 18:33:42,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:33:47,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822166734] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:33:47,236 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:33:47,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 48 [2021-12-06 18:33:47,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282344748] [2021-12-06 18:33:47,236 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:33:47,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-12-06 18:33:47,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:33:47,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-12-06 18:33:47,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=2392, Unknown=0, NotChecked=0, Total=2550 [2021-12-06 18:33:47,237 INFO L87 Difference]: Start difference. First operand 164 states and 183 transitions. Second operand has 49 states, 48 states have (on average 2.4583333333333335) internal successors, (118), 48 states have internal predecessors, (118), 4 states have call successors, (4), 2 states have call predecessors, (4), 14 states have return successors, (28), 28 states have call predecessors, (28), 3 states have call successors, (28) [2021-12-06 18:33:49,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:33:49,984 INFO L93 Difference]: Finished difference Result 265 states and 289 transitions. [2021-12-06 18:33:49,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-12-06 18:33:49,984 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 2.4583333333333335) internal successors, (118), 48 states have internal predecessors, (118), 4 states have call successors, (4), 2 states have call predecessors, (4), 14 states have return successors, (28), 28 states have call predecessors, (28), 3 states have call successors, (28) Word has length 161 [2021-12-06 18:33:49,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:33:49,986 INFO L225 Difference]: With dead ends: 265 [2021-12-06 18:33:49,986 INFO L226 Difference]: Without dead ends: 264 [2021-12-06 18:33:49,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 163 SyntacticMatches, 12 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1688 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=561, Invalid=8559, Unknown=0, NotChecked=0, Total=9120 [2021-12-06 18:33:49,987 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 217 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 3203 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 3322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 3203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-06 18:33:49,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [246 Valid, 845 Invalid, 3322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 3203 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-06 18:33:49,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-12-06 18:33:49,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 169. [2021-12-06 18:33:49,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 135 states have (on average 1.037037037037037) internal successors, (140), 134 states have internal predecessors, (140), 6 states have call successors, (6), 4 states have call predecessors, (6), 27 states have return successors, (43), 30 states have call predecessors, (43), 5 states have call successors, (43) [2021-12-06 18:33:49,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 189 transitions. [2021-12-06 18:33:49,994 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 189 transitions. Word has length 161 [2021-12-06 18:33:49,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:33:49,994 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 189 transitions. [2021-12-06 18:33:49,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 2.4583333333333335) internal successors, (118), 48 states have internal predecessors, (118), 4 states have call successors, (4), 2 states have call predecessors, (4), 14 states have return successors, (28), 28 states have call predecessors, (28), 3 states have call successors, (28) [2021-12-06 18:33:49,994 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 189 transitions. [2021-12-06 18:33:49,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-12-06 18:33:49,995 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:33:49,995 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 14, 14, 14, 14, 13, 12, 12, 11, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:33:50,017 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2021-12-06 18:33:50,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-12-06 18:33:50,197 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-06 18:33:50,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:33:50,198 INFO L85 PathProgramCache]: Analyzing trace with hash -160848100, now seen corresponding path program 7 times [2021-12-06 18:33:50,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:33:50,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369841131] [2021-12-06 18:33:50,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:33:50,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:33:50,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:50,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:33:50,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:50,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:50,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:50,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 18:33:50,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:50,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:50,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:50,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:50,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:50,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:50,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:50,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:50,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:50,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:50,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:50,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:50,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:50,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:50,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:50,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:50,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:50,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:50,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:50,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:50,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:50,762 INFO L134 CoverageAnalysis]: Checked inductivity of 976 backedges. 6 proven. 647 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2021-12-06 18:33:50,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:33:50,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369841131] [2021-12-06 18:33:50,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369841131] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:33:50,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923878270] [2021-12-06 18:33:50,763 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 18:33:50,763 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:33:50,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:33:50,764 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:33:50,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-12-06 18:33:50,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:50,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 54 conjunts are in the unsatisfiable core [2021-12-06 18:33:50,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:33:51,833 INFO L134 CoverageAnalysis]: Checked inductivity of 976 backedges. 6 proven. 647 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2021-12-06 18:33:51,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:33:54,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923878270] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:33:54,091 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:33:54,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 43 [2021-12-06 18:33:54,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169331312] [2021-12-06 18:33:54,091 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:33:54,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-12-06 18:33:54,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:33:54,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-12-06 18:33:54,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1932, Unknown=0, NotChecked=0, Total=2070 [2021-12-06 18:33:54,093 INFO L87 Difference]: Start difference. First operand 169 states and 189 transitions. Second operand has 44 states, 43 states have (on average 2.6744186046511627) internal successors, (115), 43 states have internal predecessors, (115), 7 states have call successors, (8), 2 states have call predecessors, (8), 13 states have return successors, (25), 24 states have call predecessors, (25), 6 states have call successors, (25) [2021-12-06 18:33:56,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:33:56,825 INFO L93 Difference]: Finished difference Result 302 states and 326 transitions. [2021-12-06 18:33:56,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-12-06 18:33:56,825 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 2.6744186046511627) internal successors, (115), 43 states have internal predecessors, (115), 7 states have call successors, (8), 2 states have call predecessors, (8), 13 states have return successors, (25), 24 states have call predecessors, (25), 6 states have call successors, (25) Word has length 158 [2021-12-06 18:33:56,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:33:56,826 INFO L225 Difference]: With dead ends: 302 [2021-12-06 18:33:56,826 INFO L226 Difference]: Without dead ends: 299 [2021-12-06 18:33:56,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 167 SyntacticMatches, 9 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1501 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=657, Invalid=7533, Unknown=0, NotChecked=0, Total=8190 [2021-12-06 18:33:56,828 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 243 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 3521 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 3714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 3521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-06 18:33:56,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 842 Invalid, 3714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 3521 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-06 18:33:56,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-12-06 18:33:56,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 247. [2021-12-06 18:33:56,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 197 states have (on average 1.0355329949238579) internal successors, (204), 196 states have internal predecessors, (204), 9 states have call successors, (9), 6 states have call predecessors, (9), 40 states have return successors, (57), 44 states have call predecessors, (57), 7 states have call successors, (57) [2021-12-06 18:33:56,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 270 transitions. [2021-12-06 18:33:56,837 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 270 transitions. Word has length 158 [2021-12-06 18:33:56,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:33:56,837 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 270 transitions. [2021-12-06 18:33:56,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 2.6744186046511627) internal successors, (115), 43 states have internal predecessors, (115), 7 states have call successors, (8), 2 states have call predecessors, (8), 13 states have return successors, (25), 24 states have call predecessors, (25), 6 states have call successors, (25) [2021-12-06 18:33:56,837 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 270 transitions. [2021-12-06 18:33:56,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-12-06 18:33:56,839 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:33:56,839 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 15, 14, 14, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:33:56,859 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2021-12-06 18:33:57,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-12-06 18:33:57,039 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-06 18:33:57,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:33:57,040 INFO L85 PathProgramCache]: Analyzing trace with hash -885024525, now seen corresponding path program 10 times [2021-12-06 18:33:57,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:33:57,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960670642] [2021-12-06 18:33:57,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:33:57,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:33:57,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:57,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 18:33:57,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:57,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:57,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:57,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:57,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:57,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:57,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:57,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:57,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:57,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:57,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:57,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:57,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:57,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:57,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:57,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:57,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:57,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:57,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:57,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:57,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:57,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:57,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:57,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:57,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:57,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:57,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:33:57,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:57,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1186 backedges. 0 proven. 626 refuted. 0 times theorem prover too weak. 560 trivial. 0 not checked. [2021-12-06 18:33:57,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:33:57,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960670642] [2021-12-06 18:33:57,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960670642] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:33:57,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412913993] [2021-12-06 18:33:57,816 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 18:33:57,816 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:33:57,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:33:57,817 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:33:57,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-12-06 18:33:58,026 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 18:33:58,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:33:58,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 62 conjunts are in the unsatisfiable core [2021-12-06 18:33:58,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:33:59,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1186 backedges. 0 proven. 626 refuted. 0 times theorem prover too weak. 560 trivial. 0 not checked. [2021-12-06 18:33:59,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:34:03,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412913993] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:34:03,903 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:34:03,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 51 [2021-12-06 18:34:03,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936804520] [2021-12-06 18:34:03,903 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:34:03,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-12-06 18:34:03,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:34:03,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-12-06 18:34:03,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=2694, Unknown=0, NotChecked=0, Total=2862 [2021-12-06 18:34:03,905 INFO L87 Difference]: Start difference. First operand 247 states and 270 transitions. Second operand has 52 states, 51 states have (on average 2.450980392156863) internal successors, (125), 51 states have internal predecessors, (125), 4 states have call successors, (4), 2 states have call predecessors, (4), 15 states have return successors, (30), 30 states have call predecessors, (30), 3 states have call successors, (30) [2021-12-06 18:34:07,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:34:07,274 INFO L93 Difference]: Finished difference Result 374 states and 410 transitions. [2021-12-06 18:34:07,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-12-06 18:34:07,274 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 2.450980392156863) internal successors, (125), 51 states have internal predecessors, (125), 4 states have call successors, (4), 2 states have call predecessors, (4), 15 states have return successors, (30), 30 states have call predecessors, (30), 3 states have call successors, (30) Word has length 172 [2021-12-06 18:34:07,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:34:07,276 INFO L225 Difference]: With dead ends: 374 [2021-12-06 18:34:07,276 INFO L226 Difference]: Without dead ends: 373 [2021-12-06 18:34:07,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 174 SyntacticMatches, 13 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1969 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=612, Invalid=9894, Unknown=0, NotChecked=0, Total=10506 [2021-12-06 18:34:07,277 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 330 mSDsluCounter, 954 mSDsCounter, 0 mSdLazyCounter, 3816 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 4008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 3816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-06 18:34:07,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [361 Valid, 982 Invalid, 4008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 3816 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-06 18:34:07,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2021-12-06 18:34:07,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 252. [2021-12-06 18:34:07,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 201 states have (on average 1.0348258706467661) internal successors, (208), 200 states have internal predecessors, (208), 9 states have call successors, (9), 6 states have call predecessors, (9), 41 states have return successors, (59), 45 states have call predecessors, (59), 7 states have call successors, (59) [2021-12-06 18:34:07,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 276 transitions. [2021-12-06 18:34:07,286 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 276 transitions. Word has length 172 [2021-12-06 18:34:07,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:34:07,287 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 276 transitions. [2021-12-06 18:34:07,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 2.450980392156863) internal successors, (125), 51 states have internal predecessors, (125), 4 states have call successors, (4), 2 states have call predecessors, (4), 15 states have return successors, (30), 30 states have call predecessors, (30), 3 states have call successors, (30) [2021-12-06 18:34:07,287 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 276 transitions. [2021-12-06 18:34:07,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-06 18:34:07,288 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:34:07,288 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 14, 13, 13, 13, 13, 13, 13, 12, 12, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:34:07,308 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-12-06 18:34:07,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-12-06 18:34:07,489 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-06 18:34:07,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:34:07,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1765819050, now seen corresponding path program 8 times [2021-12-06 18:34:07,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:34:07,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956496242] [2021-12-06 18:34:07,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:34:07,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:34:07,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:34:07,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:34:07,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:34:07,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:34:07,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:34:07,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 18:34:07,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:34:07,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:34:07,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:34:07,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:34:07,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:34:07,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:34:07,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:34:07,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:34:07,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:34:07,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:34:07,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:34:07,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:34:07,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:34:07,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:34:07,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:34:07,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:34:07,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:34:07,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:34:07,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:34:08,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:34:08,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:34:08,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:34:08,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:34:08,104 INFO L134 CoverageAnalysis]: Checked inductivity of 953 backedges. 2 proven. 583 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2021-12-06 18:34:08,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:34:08,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956496242] [2021-12-06 18:34:08,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956496242] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:34:08,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048989209] [2021-12-06 18:34:08,104 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 18:34:08,104 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:34:08,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:34:08,105 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:34:08,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-12-06 18:34:08,325 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 18:34:08,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:34:08,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 50 conjunts are in the unsatisfiable core [2021-12-06 18:34:08,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:34:09,323 INFO L134 CoverageAnalysis]: Checked inductivity of 953 backedges. 169 proven. 410 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2021-12-06 18:34:09,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:34:30,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048989209] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:34:30,298 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:34:30,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 29] total 48 [2021-12-06 18:34:30,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646062570] [2021-12-06 18:34:30,299 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:34:30,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-12-06 18:34:30,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:34:30,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-12-06 18:34:30,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=332, Invalid=3086, Unknown=4, NotChecked=0, Total=3422 [2021-12-06 18:34:30,300 INFO L87 Difference]: Start difference. First operand 252 states and 276 transitions. Second operand has 49 states, 48 states have (on average 2.7291666666666665) internal successors, (131), 47 states have internal predecessors, (131), 8 states have call successors, (10), 3 states have call predecessors, (10), 15 states have return successors, (28), 28 states have call predecessors, (28), 7 states have call successors, (28) [2021-12-06 18:34:34,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:34:34,702 INFO L93 Difference]: Finished difference Result 330 states and 357 transitions. [2021-12-06 18:34:34,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-12-06 18:34:34,702 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 2.7291666666666665) internal successors, (131), 47 states have internal predecessors, (131), 8 states have call successors, (10), 3 states have call predecessors, (10), 15 states have return successors, (28), 28 states have call predecessors, (28), 7 states have call successors, (28) Word has length 157 [2021-12-06 18:34:34,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:34:34,704 INFO L225 Difference]: With dead ends: 330 [2021-12-06 18:34:34,704 INFO L226 Difference]: Without dead ends: 323 [2021-12-06 18:34:34,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 170 SyntacticMatches, 11 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3870 ImplicationChecksByTransitivity, 16.3s TimeCoverageRelationStatistics Valid=1625, Invalid=15927, Unknown=4, NotChecked=0, Total=17556 [2021-12-06 18:34:34,707 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 314 mSDsluCounter, 1020 mSDsCounter, 0 mSdLazyCounter, 4787 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 1054 SdHoareTripleChecker+Invalid, 5027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 4787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:34:34,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 1054 Invalid, 5027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 4787 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-06 18:34:34,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-12-06 18:34:34,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 184. [2021-12-06 18:34:34,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 147 states have (on average 1.034013605442177) internal successors, (152), 146 states have internal predecessors, (152), 6 states have call successors, (6), 4 states have call predecessors, (6), 30 states have return successors, (47), 33 states have call predecessors, (47), 5 states have call successors, (47) [2021-12-06 18:34:34,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 205 transitions. [2021-12-06 18:34:34,713 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 205 transitions. Word has length 157 [2021-12-06 18:34:34,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:34:34,713 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 205 transitions. [2021-12-06 18:34:34,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 2.7291666666666665) internal successors, (131), 47 states have internal predecessors, (131), 8 states have call successors, (10), 3 states have call predecessors, (10), 15 states have return successors, (28), 28 states have call predecessors, (28), 7 states have call successors, (28) [2021-12-06 18:34:34,713 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 205 transitions. [2021-12-06 18:34:34,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-12-06 18:34:34,714 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:34:34,714 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 16, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:34:34,744 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2021-12-06 18:34:34,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:34:34,916 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-06 18:34:34,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:34:34,917 INFO L85 PathProgramCache]: Analyzing trace with hash -273343305, now seen corresponding path program 11 times [2021-12-06 18:34:34,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:34:34,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293620605] [2021-12-06 18:34:34,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:34:34,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:34:34,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:34:34,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 18:34:34,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:34:35,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:34:35,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:34:35,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:34:35,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:34:35,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:34:35,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:34:35,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:34:35,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:34:35,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:34:35,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:34:35,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:34:35,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:34:35,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:34:35,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:34:35,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:34:35,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:34:35,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:34:35,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:34:35,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:34:35,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:34:35,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:34:35,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:34:35,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:34:35,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:34:35,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:34:35,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:34:35,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:34:35,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:34:35,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:34:35,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:34:35,804 INFO L134 CoverageAnalysis]: Checked inductivity of 1557 backedges. 0 proven. 894 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2021-12-06 18:34:35,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:34:35,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293620605] [2021-12-06 18:34:35,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293620605] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:34:35,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172732444] [2021-12-06 18:34:35,804 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 18:34:35,804 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:34:35,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:34:35,805 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:34:35,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-12-06 18:34:36,102 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2021-12-06 18:34:36,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:34:36,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 70 conjunts are in the unsatisfiable core [2021-12-06 18:34:36,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:34:37,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1557 backedges. 0 proven. 894 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2021-12-06 18:34:37,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:34:43,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172732444] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:34:43,302 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:34:43,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 54 [2021-12-06 18:34:43,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081601108] [2021-12-06 18:34:43,302 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:34:43,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2021-12-06 18:34:43,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:34:43,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-12-06 18:34:43,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=3014, Unknown=0, NotChecked=0, Total=3192 [2021-12-06 18:34:43,303 INFO L87 Difference]: Start difference. First operand 184 states and 205 transitions. Second operand has 55 states, 54 states have (on average 2.4444444444444446) internal successors, (132), 54 states have internal predecessors, (132), 4 states have call successors, (5), 2 states have call predecessors, (5), 16 states have return successors, (32), 32 states have call predecessors, (32), 3 states have call successors, (32) [2021-12-06 18:34:46,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:34:46,923 INFO L93 Difference]: Finished difference Result 295 states and 321 transitions. [2021-12-06 18:34:46,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-12-06 18:34:46,924 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 2.4444444444444446) internal successors, (132), 54 states have internal predecessors, (132), 4 states have call successors, (5), 2 states have call predecessors, (5), 16 states have return successors, (32), 32 states have call predecessors, (32), 3 states have call successors, (32) Word has length 195 [2021-12-06 18:34:46,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:34:46,925 INFO L225 Difference]: With dead ends: 295 [2021-12-06 18:34:46,925 INFO L226 Difference]: Without dead ends: 294 [2021-12-06 18:34:46,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 201 SyntacticMatches, 14 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2169 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=635, Invalid=10921, Unknown=0, NotChecked=0, Total=11556 [2021-12-06 18:34:46,927 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 245 mSDsluCounter, 1077 mSDsCounter, 0 mSdLazyCounter, 4361 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 1106 SdHoareTripleChecker+Invalid, 4496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 4361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:34:46,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 1106 Invalid, 4496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 4361 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-06 18:34:46,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-12-06 18:34:46,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 189. [2021-12-06 18:34:46,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 151 states have (on average 1.033112582781457) internal successors, (156), 150 states have internal predecessors, (156), 6 states have call successors, (6), 4 states have call predecessors, (6), 31 states have return successors, (49), 34 states have call predecessors, (49), 5 states have call successors, (49) [2021-12-06 18:34:46,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 211 transitions. [2021-12-06 18:34:46,933 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 211 transitions. Word has length 195 [2021-12-06 18:34:46,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:34:46,933 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 211 transitions. [2021-12-06 18:34:46,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 2.4444444444444446) internal successors, (132), 54 states have internal predecessors, (132), 4 states have call successors, (5), 2 states have call predecessors, (5), 16 states have return successors, (32), 32 states have call predecessors, (32), 3 states have call successors, (32) [2021-12-06 18:34:46,934 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 211 transitions. [2021-12-06 18:34:46,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-12-06 18:34:46,935 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:34:46,935 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 16, 16, 16, 16, 15, 14, 14, 13, 13, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:34:46,956 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-12-06 18:34:47,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-12-06 18:34:47,135 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-06 18:34:47,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:34:47,135 INFO L85 PathProgramCache]: Analyzing trace with hash -160493286, now seen corresponding path program 9 times [2021-12-06 18:34:47,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:34:47,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095819721] [2021-12-06 18:34:47,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:34:47,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:34:47,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:34:47,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:34:47,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:34:47,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:34:47,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:34:47,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 18:34:47,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:34:47,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:34:47,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:34:47,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:34:47,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:34:47,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:34:47,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:34:47,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:34:47,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:34:47,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:34:47,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:34:47,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:34:47,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:34:47,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:34:47,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:34:47,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:34:47,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:34:47,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:34:47,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:34:47,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:34:47,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:34:47,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:34:47,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:34:47,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:34:47,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:34:47,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1289 backedges. 6 proven. 828 refuted. 0 times theorem prover too weak. 455 trivial. 0 not checked. [2021-12-06 18:34:47,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:34:47,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095819721] [2021-12-06 18:34:47,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095819721] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:34:47,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774545394] [2021-12-06 18:34:47,799 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 18:34:47,799 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:34:47,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:34:47,800 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:34:47,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-12-06 18:34:48,106 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2021-12-06 18:34:48,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:34:48,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 58 conjunts are in the unsatisfiable core [2021-12-06 18:34:48,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:34:49,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1289 backedges. 201 proven. 627 refuted. 0 times theorem prover too weak. 461 trivial. 0 not checked. [2021-12-06 18:34:49,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:34:59,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774545394] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:34:59,865 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:34:59,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 31] total 51 [2021-12-06 18:34:59,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750269311] [2021-12-06 18:34:59,866 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:34:59,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-12-06 18:34:59,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:34:59,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-12-06 18:34:59,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=2951, Unknown=2, NotChecked=0, Total=3192 [2021-12-06 18:34:59,867 INFO L87 Difference]: Start difference. First operand 189 states and 211 transitions. Second operand has 52 states, 51 states have (on average 2.7058823529411766) internal successors, (138), 50 states have internal predecessors, (138), 8 states have call successors, (12), 3 states have call predecessors, (12), 16 states have return successors, (30), 30 states have call predecessors, (30), 7 states have call successors, (30) [2021-12-06 18:35:04,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:35:04,879 INFO L93 Difference]: Finished difference Result 348 states and 374 transitions. [2021-12-06 18:35:04,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-12-06 18:35:04,880 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 2.7058823529411766) internal successors, (138), 50 states have internal predecessors, (138), 8 states have call successors, (12), 3 states have call predecessors, (12), 16 states have return successors, (30), 30 states have call predecessors, (30), 7 states have call successors, (30) Word has length 180 [2021-12-06 18:35:04,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:35:04,881 INFO L225 Difference]: With dead ends: 348 [2021-12-06 18:35:04,882 INFO L226 Difference]: Without dead ends: 343 [2021-12-06 18:35:04,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 191 SyntacticMatches, 11 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3989 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=1410, Invalid=17220, Unknown=2, NotChecked=0, Total=18632 [2021-12-06 18:35:04,885 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 384 mSDsluCounter, 1079 mSDsCounter, 0 mSdLazyCounter, 5115 mSolverCounterSat, 310 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 1115 SdHoareTripleChecker+Invalid, 5425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 310 IncrementalHoareTripleChecker+Valid, 5115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:35:04,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [384 Valid, 1115 Invalid, 5425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [310 Valid, 5115 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-06 18:35:04,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2021-12-06 18:35:04,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 194. [2021-12-06 18:35:04,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 155 states have (on average 1.032258064516129) internal successors, (160), 154 states have internal predecessors, (160), 6 states have call successors, (6), 4 states have call predecessors, (6), 32 states have return successors, (50), 35 states have call predecessors, (50), 5 states have call successors, (50) [2021-12-06 18:35:04,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 216 transitions. [2021-12-06 18:35:04,894 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 216 transitions. Word has length 180 [2021-12-06 18:35:04,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:35:04,894 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 216 transitions. [2021-12-06 18:35:04,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 2.7058823529411766) internal successors, (138), 50 states have internal predecessors, (138), 8 states have call successors, (12), 3 states have call predecessors, (12), 16 states have return successors, (30), 30 states have call predecessors, (30), 7 states have call successors, (30) [2021-12-06 18:35:04,895 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 216 transitions. [2021-12-06 18:35:04,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-12-06 18:35:04,896 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:35:04,896 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 17, 17, 17, 16, 16, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:35:04,917 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2021-12-06 18:35:05,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:35:05,098 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-06 18:35:05,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:35:05,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1528587057, now seen corresponding path program 12 times [2021-12-06 18:35:05,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:35:05,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824269266] [2021-12-06 18:35:05,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:35:05,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:35:05,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:05,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 18:35:05,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:05,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:05,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:05,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:05,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:05,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:05,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:05,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:05,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:05,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:05,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:05,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:05,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:05,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:05,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:05,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:05,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:05,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:05,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:05,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:05,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:05,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:05,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:05,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:05,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:05,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:05,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:05,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:05,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:06,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:06,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:06,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:06,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:06,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1747 backedges. 0 proven. 993 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2021-12-06 18:35:06,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:35:06,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824269266] [2021-12-06 18:35:06,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824269266] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:35:06,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331635954] [2021-12-06 18:35:06,135 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 18:35:06,135 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:35:06,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:35:06,136 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:35:06,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-12-06 18:35:06,491 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2021-12-06 18:35:06,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:35:06,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 74 conjunts are in the unsatisfiable core [2021-12-06 18:35:06,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:35:07,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1747 backedges. 0 proven. 993 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2021-12-06 18:35:07,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:35:14,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331635954] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:35:14,715 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:35:14,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 57 [2021-12-06 18:35:14,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612327360] [2021-12-06 18:35:14,715 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:35:14,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-12-06 18:35:14,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:35:14,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-12-06 18:35:14,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=3352, Unknown=0, NotChecked=0, Total=3540 [2021-12-06 18:35:14,717 INFO L87 Difference]: Start difference. First operand 194 states and 216 transitions. Second operand has 58 states, 57 states have (on average 2.43859649122807) internal successors, (139), 57 states have internal predecessors, (139), 4 states have call successors, (5), 2 states have call predecessors, (5), 17 states have return successors, (34), 34 states have call predecessors, (34), 3 states have call successors, (34) [2021-12-06 18:35:18,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:35:18,807 INFO L93 Difference]: Finished difference Result 310 states and 337 transitions. [2021-12-06 18:35:18,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-12-06 18:35:18,808 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 2.43859649122807) internal successors, (139), 57 states have internal predecessors, (139), 4 states have call successors, (5), 2 states have call predecessors, (5), 17 states have return successors, (34), 34 states have call predecessors, (34), 3 states have call successors, (34) Word has length 206 [2021-12-06 18:35:18,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:35:18,809 INFO L225 Difference]: With dead ends: 310 [2021-12-06 18:35:18,809 INFO L226 Difference]: Without dead ends: 309 [2021-12-06 18:35:18,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 212 SyntacticMatches, 15 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2432 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=672, Invalid=12210, Unknown=0, NotChecked=0, Total=12882 [2021-12-06 18:35:18,810 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 254 mSDsluCounter, 1141 mSDsCounter, 0 mSdLazyCounter, 4699 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 1171 SdHoareTripleChecker+Invalid, 4840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 4699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:35:18,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 1171 Invalid, 4840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 4699 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-06 18:35:18,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-12-06 18:35:18,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 199. [2021-12-06 18:35:18,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 159 states have (on average 1.0314465408805031) internal successors, (164), 158 states have internal predecessors, (164), 6 states have call successors, (6), 4 states have call predecessors, (6), 33 states have return successors, (52), 36 states have call predecessors, (52), 5 states have call successors, (52) [2021-12-06 18:35:18,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 222 transitions. [2021-12-06 18:35:18,817 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 222 transitions. Word has length 206 [2021-12-06 18:35:18,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:35:18,817 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 222 transitions. [2021-12-06 18:35:18,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 2.43859649122807) internal successors, (139), 57 states have internal predecessors, (139), 4 states have call successors, (5), 2 states have call predecessors, (5), 17 states have return successors, (34), 34 states have call predecessors, (34), 3 states have call successors, (34) [2021-12-06 18:35:18,817 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 222 transitions. [2021-12-06 18:35:18,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-06 18:35:18,818 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:35:18,819 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 16, 15, 15, 15, 15, 15, 15, 14, 14, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:35:18,840 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2021-12-06 18:35:19,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:35:19,020 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-06 18:35:19,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:35:19,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1100004820, now seen corresponding path program 10 times [2021-12-06 18:35:19,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:35:19,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999739739] [2021-12-06 18:35:19,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:35:19,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:35:19,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:19,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:35:19,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:19,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:19,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:19,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 18:35:19,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:19,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:19,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:19,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:19,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:19,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:19,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:19,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:19,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:19,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:19,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:19,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:19,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:19,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:19,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:19,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:19,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:19,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:19,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:19,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:19,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:19,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:19,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:19,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:19,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:19,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:19,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:19,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 2 proven. 750 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2021-12-06 18:35:19,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:35:19,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999739739] [2021-12-06 18:35:19,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999739739] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:35:19,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957150172] [2021-12-06 18:35:19,754 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 18:35:19,754 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:35:19,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:35:19,754 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:35:19,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-12-06 18:35:20,153 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 18:35:20,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:35:20,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 62 conjunts are in the unsatisfiable core [2021-12-06 18:35:20,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:35:21,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 2 proven. 750 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2021-12-06 18:35:21,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:35:25,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957150172] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:35:25,442 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:35:25,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 52 [2021-12-06 18:35:25,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056810607] [2021-12-06 18:35:25,443 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:35:25,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-12-06 18:35:25,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:35:25,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-12-06 18:35:25,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=2802, Unknown=0, NotChecked=0, Total=2970 [2021-12-06 18:35:25,444 INFO L87 Difference]: Start difference. First operand 199 states and 222 transitions. Second operand has 53 states, 52 states have (on average 2.6153846153846154) internal successors, (136), 52 states have internal predecessors, (136), 7 states have call successors, (7), 2 states have call predecessors, (7), 16 states have return successors, (31), 30 states have call predecessors, (31), 6 states have call successors, (31) [2021-12-06 18:35:29,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:35:29,524 INFO L93 Difference]: Finished difference Result 362 states and 389 transitions. [2021-12-06 18:35:29,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-12-06 18:35:29,525 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 2.6153846153846154) internal successors, (136), 52 states have internal predecessors, (136), 7 states have call successors, (7), 2 states have call predecessors, (7), 16 states have return successors, (31), 30 states have call predecessors, (31), 6 states have call successors, (31) Word has length 179 [2021-12-06 18:35:29,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:35:29,526 INFO L225 Difference]: With dead ends: 362 [2021-12-06 18:35:29,526 INFO L226 Difference]: Without dead ends: 359 [2021-12-06 18:35:29,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 184 SyntacticMatches, 12 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2374 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=825, Invalid=11607, Unknown=0, NotChecked=0, Total=12432 [2021-12-06 18:35:29,528 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 207 mSDsluCounter, 1177 mSDsCounter, 0 mSdLazyCounter, 5119 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 5278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 5119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:35:29,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 1215 Invalid, 5278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 5119 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-06 18:35:29,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2021-12-06 18:35:29,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 292. [2021-12-06 18:35:29,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 233 states have (on average 1.0300429184549356) internal successors, (240), 232 states have internal predecessors, (240), 9 states have call successors, (9), 6 states have call predecessors, (9), 49 states have return successors, (69), 53 states have call predecessors, (69), 7 states have call successors, (69) [2021-12-06 18:35:29,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 318 transitions. [2021-12-06 18:35:29,536 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 318 transitions. Word has length 179 [2021-12-06 18:35:29,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:35:29,536 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 318 transitions. [2021-12-06 18:35:29,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 2.6153846153846154) internal successors, (136), 52 states have internal predecessors, (136), 7 states have call successors, (7), 2 states have call predecessors, (7), 16 states have return successors, (31), 30 states have call predecessors, (31), 6 states have call successors, (31) [2021-12-06 18:35:29,536 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 318 transitions. [2021-12-06 18:35:29,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-12-06 18:35:29,538 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:35:29,538 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 18, 18, 17, 17, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:35:29,560 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-12-06 18:35:29,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-12-06 18:35:29,738 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-06 18:35:29,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:35:29,739 INFO L85 PathProgramCache]: Analyzing trace with hash -48529833, now seen corresponding path program 13 times [2021-12-06 18:35:29,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:35:29,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292750954] [2021-12-06 18:35:29,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:35:29,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:35:29,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:29,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 18:35:29,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:29,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:29,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:29,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:29,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:29,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:29,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:30,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:30,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:30,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:30,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:30,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:30,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:30,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:30,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:30,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:30,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:30,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:30,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:30,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:30,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:30,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:30,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:30,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:30,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:30,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:30,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:30,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:30,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:30,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:30,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:30,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:30,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:30,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:30,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:30,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1720 backedges. 0 proven. 887 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2021-12-06 18:35:30,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:35:30,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292750954] [2021-12-06 18:35:30,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292750954] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:35:30,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393795329] [2021-12-06 18:35:30,796 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 18:35:30,796 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:35:30,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:35:30,797 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:35:30,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-12-06 18:35:31,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:31,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 74 conjunts are in the unsatisfiable core [2021-12-06 18:35:31,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:35:32,804 INFO L134 CoverageAnalysis]: Checked inductivity of 1720 backedges. 0 proven. 887 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2021-12-06 18:35:32,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:35:40,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393795329] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:35:40,591 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:35:40,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 60 [2021-12-06 18:35:40,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458214171] [2021-12-06 18:35:40,591 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:35:40,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2021-12-06 18:35:40,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:35:40,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-12-06 18:35:40,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=3708, Unknown=0, NotChecked=0, Total=3906 [2021-12-06 18:35:40,592 INFO L87 Difference]: Start difference. First operand 292 states and 318 transitions. Second operand has 61 states, 60 states have (on average 2.433333333333333) internal successors, (146), 60 states have internal predecessors, (146), 4 states have call successors, (4), 2 states have call predecessors, (4), 18 states have return successors, (36), 36 states have call predecessors, (36), 3 states have call successors, (36) [2021-12-06 18:35:45,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:35:45,090 INFO L93 Difference]: Finished difference Result 434 states and 473 transitions. [2021-12-06 18:35:45,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-12-06 18:35:45,090 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 60 states have (on average 2.433333333333333) internal successors, (146), 60 states have internal predecessors, (146), 4 states have call successors, (4), 2 states have call predecessors, (4), 18 states have return successors, (36), 36 states have call predecessors, (36), 3 states have call successors, (36) Word has length 205 [2021-12-06 18:35:45,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:35:45,092 INFO L225 Difference]: With dead ends: 434 [2021-12-06 18:35:45,092 INFO L226 Difference]: Without dead ends: 433 [2021-12-06 18:35:45,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 207 SyntacticMatches, 16 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2767 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=723, Invalid=13797, Unknown=0, NotChecked=0, Total=14520 [2021-12-06 18:35:45,094 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 387 mSDsluCounter, 1252 mSDsCounter, 0 mSdLazyCounter, 5287 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 1283 SdHoareTripleChecker+Invalid, 5515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 5287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-06 18:35:45,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [424 Valid, 1283 Invalid, 5515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 5287 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-06 18:35:45,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2021-12-06 18:35:45,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 297. [2021-12-06 18:35:45,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 237 states have (on average 1.029535864978903) internal successors, (244), 236 states have internal predecessors, (244), 9 states have call successors, (9), 6 states have call predecessors, (9), 50 states have return successors, (71), 54 states have call predecessors, (71), 7 states have call successors, (71) [2021-12-06 18:35:45,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 324 transitions. [2021-12-06 18:35:45,103 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 324 transitions. Word has length 205 [2021-12-06 18:35:45,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:35:45,104 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 324 transitions. [2021-12-06 18:35:45,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 60 states have (on average 2.433333333333333) internal successors, (146), 60 states have internal predecessors, (146), 4 states have call successors, (4), 2 states have call predecessors, (4), 18 states have return successors, (36), 36 states have call predecessors, (36), 3 states have call successors, (36) [2021-12-06 18:35:45,104 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 324 transitions. [2021-12-06 18:35:45,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-06 18:35:45,105 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:35:45,105 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 17, 16, 16, 16, 16, 16, 16, 15, 15, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:35:45,127 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2021-12-06 18:35:45,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-12-06 18:35:45,306 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-06 18:35:45,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:35:45,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1063621370, now seen corresponding path program 11 times [2021-12-06 18:35:45,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:35:45,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169552137] [2021-12-06 18:35:45,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:35:45,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:35:45,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:45,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:35:45,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:45,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:45,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:45,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 18:35:45,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:45,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:45,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:45,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:45,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:45,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:45,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:45,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:45,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:45,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:45,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:45,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:45,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:45,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:45,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:45,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:45,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:45,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:45,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:45,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:45,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:45,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:45,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:46,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:46,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:46,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:46,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:46,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:46,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:46,185 INFO L134 CoverageAnalysis]: Checked inductivity of 1436 backedges. 2 proven. 841 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2021-12-06 18:35:46,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:35:46,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169552137] [2021-12-06 18:35:46,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169552137] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:35:46,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032785165] [2021-12-06 18:35:46,186 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 18:35:46,186 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:35:46,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:35:46,186 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:35:46,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-12-06 18:35:46,608 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-12-06 18:35:46,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:35:46,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 62 conjunts are in the unsatisfiable core [2021-12-06 18:35:46,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:35:48,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1436 backedges. 211 proven. 626 refuted. 0 times theorem prover too weak. 599 trivial. 0 not checked. [2021-12-06 18:35:48,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:35:52,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032785165] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:35:52,792 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:35:52,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 35] total 57 [2021-12-06 18:35:52,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921199223] [2021-12-06 18:35:52,793 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:35:52,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-12-06 18:35:52,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:35:52,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-12-06 18:35:52,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=3356, Unknown=0, NotChecked=0, Total=3540 [2021-12-06 18:35:52,794 INFO L87 Difference]: Start difference. First operand 297 states and 324 transitions. Second operand has 58 states, 57 states have (on average 2.6666666666666665) internal successors, (152), 56 states have internal predecessors, (152), 8 states have call successors, (10), 3 states have call predecessors, (10), 18 states have return successors, (34), 34 states have call predecessors, (34), 7 states have call successors, (34) [2021-12-06 18:35:58,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:35:58,922 INFO L93 Difference]: Finished difference Result 390 states and 420 transitions. [2021-12-06 18:35:58,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-12-06 18:35:58,922 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 2.6666666666666665) internal successors, (152), 56 states have internal predecessors, (152), 8 states have call successors, (10), 3 states have call predecessors, (10), 18 states have return successors, (34), 34 states have call predecessors, (34), 7 states have call successors, (34) Word has length 190 [2021-12-06 18:35:58,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:35:58,924 INFO L225 Difference]: With dead ends: 390 [2021-12-06 18:35:58,924 INFO L226 Difference]: Without dead ends: 383 [2021-12-06 18:35:58,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 194 SyntacticMatches, 13 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5081 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=1350, Invalid=21602, Unknown=0, NotChecked=0, Total=22952 [2021-12-06 18:35:58,925 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 436 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 6181 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 1339 SdHoareTripleChecker+Invalid, 6510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 6181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-06 18:35:58,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [436 Valid, 1339 Invalid, 6510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 6181 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-06 18:35:58,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2021-12-06 18:35:58,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 214. [2021-12-06 18:35:58,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 171 states have (on average 1.0292397660818713) internal successors, (176), 170 states have internal predecessors, (176), 6 states have call successors, (6), 4 states have call predecessors, (6), 36 states have return successors, (56), 39 states have call predecessors, (56), 5 states have call successors, (56) [2021-12-06 18:35:58,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 238 transitions. [2021-12-06 18:35:58,932 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 238 transitions. Word has length 190 [2021-12-06 18:35:58,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:35:58,932 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 238 transitions. [2021-12-06 18:35:58,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 2.6666666666666665) internal successors, (152), 56 states have internal predecessors, (152), 8 states have call successors, (10), 3 states have call predecessors, (10), 18 states have return successors, (34), 34 states have call predecessors, (34), 7 states have call successors, (34) [2021-12-06 18:35:58,932 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 238 transitions. [2021-12-06 18:35:58,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-12-06 18:35:58,933 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:35:58,933 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 19, 19, 19, 18, 18, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:35:58,955 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2021-12-06 18:35:59,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:35:59,134 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-06 18:35:59,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:35:59,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1254471181, now seen corresponding path program 14 times [2021-12-06 18:35:59,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:35:59,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661906693] [2021-12-06 18:35:59,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:35:59,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:35:59,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:59,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 18:35:59,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:59,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:59,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:59,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:59,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:59,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:59,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:59,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:59,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:59,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:59,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:59,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:59,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:59,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:59,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:59,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:59,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:59,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:59,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:59,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:59,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:59,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:59,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:59,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:59,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:59,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:35:59,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:59,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:36:00,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:00,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:36:00,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:00,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:36:00,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:00,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:36:00,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:00,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:36:00,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:00,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2160 backedges. 0 proven. 1206 refuted. 0 times theorem prover too weak. 954 trivial. 0 not checked. [2021-12-06 18:36:00,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:36:00,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661906693] [2021-12-06 18:36:00,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661906693] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:36:00,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293069485] [2021-12-06 18:36:00,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 18:36:00,287 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:36:00,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:36:00,288 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:36:00,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-12-06 18:36:00,723 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 18:36:00,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:36:00,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 82 conjunts are in the unsatisfiable core [2021-12-06 18:36:00,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:36:02,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2160 backedges. 0 proven. 1206 refuted. 0 times theorem prover too weak. 954 trivial. 0 not checked. [2021-12-06 18:36:02,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:36:11,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293069485] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:36:11,427 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:36:11,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 63 [2021-12-06 18:36:11,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719548317] [2021-12-06 18:36:11,427 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:36:11,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-12-06 18:36:11,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:36:11,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-12-06 18:36:11,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=4082, Unknown=0, NotChecked=0, Total=4290 [2021-12-06 18:36:11,428 INFO L87 Difference]: Start difference. First operand 214 states and 238 transitions. Second operand has 64 states, 63 states have (on average 2.4285714285714284) internal successors, (153), 63 states have internal predecessors, (153), 4 states have call successors, (5), 2 states have call predecessors, (5), 19 states have return successors, (38), 38 states have call predecessors, (38), 3 states have call successors, (38) [2021-12-06 18:36:16,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:36:16,231 INFO L93 Difference]: Finished difference Result 340 states and 369 transitions. [2021-12-06 18:36:16,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-12-06 18:36:16,231 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 2.4285714285714284) internal successors, (153), 63 states have internal predecessors, (153), 4 states have call successors, (5), 2 states have call predecessors, (5), 19 states have return successors, (38), 38 states have call predecessors, (38), 3 states have call successors, (38) Word has length 228 [2021-12-06 18:36:16,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:36:16,233 INFO L225 Difference]: With dead ends: 340 [2021-12-06 18:36:16,233 INFO L226 Difference]: Without dead ends: 339 [2021-12-06 18:36:16,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 234 SyntacticMatches, 17 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3003 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=746, Invalid=15004, Unknown=0, NotChecked=0, Total=15750 [2021-12-06 18:36:16,234 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 282 mSDsluCounter, 1322 mSDsCounter, 0 mSdLazyCounter, 5627 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 1354 SdHoareTripleChecker+Invalid, 5786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 5627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-06 18:36:16,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 1354 Invalid, 5786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 5627 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-06 18:36:16,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2021-12-06 18:36:16,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 219. [2021-12-06 18:36:16,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 175 states have (on average 1.0285714285714285) internal successors, (180), 174 states have internal predecessors, (180), 6 states have call successors, (6), 4 states have call predecessors, (6), 37 states have return successors, (58), 40 states have call predecessors, (58), 5 states have call successors, (58) [2021-12-06 18:36:16,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 244 transitions. [2021-12-06 18:36:16,241 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 244 transitions. Word has length 228 [2021-12-06 18:36:16,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:36:16,241 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 244 transitions. [2021-12-06 18:36:16,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 2.4285714285714284) internal successors, (153), 63 states have internal predecessors, (153), 4 states have call successors, (5), 2 states have call predecessors, (5), 19 states have return successors, (38), 38 states have call predecessors, (38), 3 states have call successors, (38) [2021-12-06 18:36:16,241 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 244 transitions. [2021-12-06 18:36:16,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-12-06 18:36:16,242 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:36:16,242 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 19, 19, 19, 19, 18, 17, 17, 16, 16, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:36:16,276 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2021-12-06 18:36:16,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-12-06 18:36:16,444 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-06 18:36:16,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:36:16,444 INFO L85 PathProgramCache]: Analyzing trace with hash 192989904, now seen corresponding path program 12 times [2021-12-06 18:36:16,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:36:16,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671208567] [2021-12-06 18:36:16,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:36:16,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:36:16,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:16,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:36:16,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:16,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:36:16,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:16,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 18:36:16,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:16,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:36:16,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:16,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:36:16,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:16,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:36:16,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:16,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:36:16,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:16,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:36:16,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:16,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:36:16,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:16,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:36:16,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:16,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:36:16,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:16,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:36:16,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:17,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:36:17,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:17,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:36:17,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:17,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:36:17,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:17,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:36:17,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:17,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:36:17,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:17,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:36:17,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:17,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1841 backedges. 6 proven. 1137 refuted. 0 times theorem prover too weak. 698 trivial. 0 not checked. [2021-12-06 18:36:17,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:36:17,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671208567] [2021-12-06 18:36:17,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671208567] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:36:17,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528350201] [2021-12-06 18:36:17,382 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 18:36:17,382 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:36:17,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:36:17,383 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:36:17,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-12-06 18:36:17,878 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2021-12-06 18:36:17,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:36:17,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 70 conjunts are in the unsatisfiable core [2021-12-06 18:36:17,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:36:19,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1841 backedges. 243 proven. 894 refuted. 0 times theorem prover too weak. 704 trivial. 0 not checked. [2021-12-06 18:36:19,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:36:25,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528350201] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:36:25,175 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:36:25,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 37] total 60 [2021-12-06 18:36:25,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011555986] [2021-12-06 18:36:25,176 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:36:25,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2021-12-06 18:36:25,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:36:25,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-12-06 18:36:25,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=3712, Unknown=0, NotChecked=0, Total=3906 [2021-12-06 18:36:25,177 INFO L87 Difference]: Start difference. First operand 219 states and 244 transitions. Second operand has 61 states, 60 states have (on average 2.65) internal successors, (159), 59 states have internal predecessors, (159), 8 states have call successors, (12), 3 states have call predecessors, (12), 19 states have return successors, (36), 36 states have call predecessors, (36), 7 states have call successors, (36) [2021-12-06 18:36:32,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:36:32,359 INFO L93 Difference]: Finished difference Result 408 states and 437 transitions. [2021-12-06 18:36:32,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-12-06 18:36:32,360 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 60 states have (on average 2.65) internal successors, (159), 59 states have internal predecessors, (159), 8 states have call successors, (12), 3 states have call predecessors, (12), 19 states have return successors, (36), 36 states have call predecessors, (36), 7 states have call successors, (36) Word has length 213 [2021-12-06 18:36:32,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:36:32,361 INFO L225 Difference]: With dead ends: 408 [2021-12-06 18:36:32,361 INFO L226 Difference]: Without dead ends: 403 [2021-12-06 18:36:32,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 221 SyntacticMatches, 14 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5756 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=1436, Invalid=24324, Unknown=0, NotChecked=0, Total=25760 [2021-12-06 18:36:32,366 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 402 mSDsluCounter, 1738 mSDsCounter, 0 mSdLazyCounter, 8199 mSolverCounterSat, 313 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 1780 SdHoareTripleChecker+Invalid, 8512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 313 IncrementalHoareTripleChecker+Valid, 8199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-12-06 18:36:32,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [402 Valid, 1780 Invalid, 8512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [313 Valid, 8199 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-12-06 18:36:32,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2021-12-06 18:36:32,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 224. [2021-12-06 18:36:32,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 179 states have (on average 1.0279329608938548) internal successors, (184), 178 states have internal predecessors, (184), 6 states have call successors, (6), 4 states have call predecessors, (6), 38 states have return successors, (59), 41 states have call predecessors, (59), 5 states have call successors, (59) [2021-12-06 18:36:32,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 249 transitions. [2021-12-06 18:36:32,373 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 249 transitions. Word has length 213 [2021-12-06 18:36:32,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:36:32,373 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 249 transitions. [2021-12-06 18:36:32,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 60 states have (on average 2.65) internal successors, (159), 59 states have internal predecessors, (159), 8 states have call successors, (12), 3 states have call predecessors, (12), 19 states have return successors, (36), 36 states have call predecessors, (36), 7 states have call successors, (36) [2021-12-06 18:36:32,373 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 249 transitions. [2021-12-06 18:36:32,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-12-06 18:36:32,374 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:36:32,374 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 20, 20, 20, 19, 19, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:36:32,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-12-06 18:36:32,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:36:32,575 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-06 18:36:32,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:36:32,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1398983015, now seen corresponding path program 15 times [2021-12-06 18:36:32,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:36:32,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240943648] [2021-12-06 18:36:32,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:36:32,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:36:32,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:32,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 18:36:32,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:32,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:36:32,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:32,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:36:32,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:32,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:36:32,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:32,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:36:32,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:32,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:36:32,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:33,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:36:33,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:33,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:36:33,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:33,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:36:33,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:33,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:36:33,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:33,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:36:33,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:33,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:36:33,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:33,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:36:33,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:33,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:36:33,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:33,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:36:33,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:33,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:36:33,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:33,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:36:33,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:33,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:36:33,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:33,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:36:33,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:33,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:36:33,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:33,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2131 backedges. 0 proven. 1086 refuted. 0 times theorem prover too weak. 1045 trivial. 0 not checked. [2021-12-06 18:36:33,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:36:33,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240943648] [2021-12-06 18:36:33,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240943648] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:36:33,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621884245] [2021-12-06 18:36:33,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 18:36:33,864 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:36:33,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:36:33,865 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:36:33,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-12-06 18:36:34,442 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2021-12-06 18:36:34,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:36:34,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 82 conjunts are in the unsatisfiable core [2021-12-06 18:36:34,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:36:36,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2131 backedges. 0 proven. 1086 refuted. 0 times theorem prover too weak. 1045 trivial. 0 not checked. [2021-12-06 18:36:36,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:36:46,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621884245] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:36:46,563 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:36:46,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 66 [2021-12-06 18:36:46,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860823612] [2021-12-06 18:36:46,564 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:36:46,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2021-12-06 18:36:46,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:36:46,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-12-06 18:36:46,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=4474, Unknown=0, NotChecked=0, Total=4692 [2021-12-06 18:36:46,565 INFO L87 Difference]: Start difference. First operand 224 states and 249 transitions. Second operand has 67 states, 66 states have (on average 2.4242424242424243) internal successors, (160), 66 states have internal predecessors, (160), 4 states have call successors, (4), 2 states have call predecessors, (4), 20 states have return successors, (40), 40 states have call predecessors, (40), 3 states have call successors, (40) [2021-12-06 18:36:51,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:36:51,808 INFO L93 Difference]: Finished difference Result 355 states and 385 transitions. [2021-12-06 18:36:51,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-12-06 18:36:51,809 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 66 states have (on average 2.4242424242424243) internal successors, (160), 66 states have internal predecessors, (160), 4 states have call successors, (4), 2 states have call predecessors, (4), 20 states have return successors, (40), 40 states have call predecessors, (40), 3 states have call successors, (40) Word has length 227 [2021-12-06 18:36:51,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:36:51,810 INFO L225 Difference]: With dead ends: 355 [2021-12-06 18:36:51,810 INFO L226 Difference]: Without dead ends: 354 [2021-12-06 18:36:51,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 229 SyntacticMatches, 18 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3311 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=783, Invalid=16509, Unknown=0, NotChecked=0, Total=17292 [2021-12-06 18:36:51,811 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 425 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 6363 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 1529 SdHoareTripleChecker+Invalid, 6611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 6363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-06 18:36:51,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [466 Valid, 1529 Invalid, 6611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 6363 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-06 18:36:51,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2021-12-06 18:36:51,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 229. [2021-12-06 18:36:51,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 183 states have (on average 1.0273224043715847) internal successors, (188), 182 states have internal predecessors, (188), 6 states have call successors, (6), 4 states have call predecessors, (6), 39 states have return successors, (61), 42 states have call predecessors, (61), 5 states have call successors, (61) [2021-12-06 18:36:51,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 255 transitions. [2021-12-06 18:36:51,819 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 255 transitions. Word has length 227 [2021-12-06 18:36:51,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:36:51,819 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 255 transitions. [2021-12-06 18:36:51,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 66 states have (on average 2.4242424242424243) internal successors, (160), 66 states have internal predecessors, (160), 4 states have call successors, (4), 2 states have call predecessors, (4), 20 states have return successors, (40), 40 states have call predecessors, (40), 3 states have call successors, (40) [2021-12-06 18:36:51,819 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 255 transitions. [2021-12-06 18:36:51,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-12-06 18:36:51,820 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:36:51,821 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 20, 20, 20, 20, 19, 18, 18, 17, 17, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:36:51,844 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2021-12-06 18:36:52,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-12-06 18:36:52,021 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-06 18:36:52,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:36:52,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1257788694, now seen corresponding path program 13 times [2021-12-06 18:36:52,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:36:52,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842675344] [2021-12-06 18:36:52,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:36:52,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:36:52,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:52,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:36:52,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:52,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:36:52,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:52,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 18:36:52,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:52,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:36:52,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:52,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:36:52,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:52,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:36:52,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:52,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:36:52,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:52,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:36:52,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:52,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:36:52,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:52,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:36:52,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:52,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:36:52,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:52,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:36:52,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:52,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:36:52,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:52,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:36:52,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:52,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:36:52,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:52,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:36:52,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:52,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:36:52,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:52,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:36:52,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:53,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:36:53,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:53,083 INFO L134 CoverageAnalysis]: Checked inductivity of 2047 backedges. 6 proven. 1250 refuted. 0 times theorem prover too weak. 791 trivial. 0 not checked. [2021-12-06 18:36:53,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:36:53,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842675344] [2021-12-06 18:36:53,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842675344] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:36:53,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229697258] [2021-12-06 18:36:53,083 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 18:36:53,083 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:36:53,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:36:53,084 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:36:53,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-12-06 18:36:53,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:53,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 78 conjunts are in the unsatisfiable core [2021-12-06 18:36:53,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:36:55,238 INFO L134 CoverageAnalysis]: Checked inductivity of 2047 backedges. 6 proven. 1250 refuted. 0 times theorem prover too weak. 791 trivial. 0 not checked. [2021-12-06 18:36:55,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:37:01,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229697258] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:37:01,996 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:37:01,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 61 [2021-12-06 18:37:01,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765411825] [2021-12-06 18:37:01,996 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:37:01,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2021-12-06 18:37:01,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:37:01,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-12-06 18:37:01,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=3834, Unknown=0, NotChecked=0, Total=4032 [2021-12-06 18:37:01,997 INFO L87 Difference]: Start difference. First operand 229 states and 255 transitions. Second operand has 62 states, 61 states have (on average 2.5737704918032787) internal successors, (157), 61 states have internal predecessors, (157), 7 states have call successors, (8), 2 states have call predecessors, (8), 19 states have return successors, (37), 36 states have call predecessors, (37), 6 states have call successors, (37) [2021-12-06 18:37:07,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:37:07,584 INFO L93 Difference]: Finished difference Result 422 states and 452 transitions. [2021-12-06 18:37:07,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-12-06 18:37:07,584 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 2.5737704918032787) internal successors, (157), 61 states have internal predecessors, (157), 7 states have call successors, (8), 2 states have call predecessors, (8), 19 states have return successors, (37), 36 states have call predecessors, (37), 6 states have call successors, (37) Word has length 224 [2021-12-06 18:37:07,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:37:07,585 INFO L225 Difference]: With dead ends: 422 [2021-12-06 18:37:07,586 INFO L226 Difference]: Without dead ends: 419 [2021-12-06 18:37:07,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 233 SyntacticMatches, 15 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3445 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=993, Invalid=16563, Unknown=0, NotChecked=0, Total=17556 [2021-12-06 18:37:07,587 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 356 mSDsluCounter, 1672 mSDsCounter, 0 mSdLazyCounter, 7281 mSolverCounterSat, 295 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 1716 SdHoareTripleChecker+Invalid, 7576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 7281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:37:07,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [356 Valid, 1716 Invalid, 7576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [295 Valid, 7281 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-12-06 18:37:07,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2021-12-06 18:37:07,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 337. [2021-12-06 18:37:07,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 269 states have (on average 1.0260223048327137) internal successors, (276), 268 states have internal predecessors, (276), 9 states have call successors, (9), 6 states have call predecessors, (9), 58 states have return successors, (81), 62 states have call predecessors, (81), 7 states have call successors, (81) [2021-12-06 18:37:07,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 366 transitions. [2021-12-06 18:37:07,598 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 366 transitions. Word has length 224 [2021-12-06 18:37:07,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:37:07,598 INFO L470 AbstractCegarLoop]: Abstraction has 337 states and 366 transitions. [2021-12-06 18:37:07,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 2.5737704918032787) internal successors, (157), 61 states have internal predecessors, (157), 7 states have call successors, (8), 2 states have call predecessors, (8), 19 states have return successors, (37), 36 states have call predecessors, (37), 6 states have call successors, (37) [2021-12-06 18:37:07,598 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 366 transitions. [2021-12-06 18:37:07,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-12-06 18:37:07,600 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:37:07,600 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 21, 21, 21, 20, 20, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:37:07,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-12-06 18:37:07,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-12-06 18:37:07,800 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-06 18:37:07,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:37:07,801 INFO L85 PathProgramCache]: Analyzing trace with hash 164015947, now seen corresponding path program 16 times [2021-12-06 18:37:07,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:37:07,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938032912] [2021-12-06 18:37:07,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:37:07,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:37:07,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:07,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 18:37:07,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:07,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:07,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:08,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:08,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:08,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:08,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:08,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:08,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:08,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:08,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:08,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:08,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:08,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:08,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:08,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:08,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:08,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:08,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:08,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:08,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:08,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:08,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:08,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:08,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:08,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:08,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:08,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:08,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:08,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:08,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:08,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:08,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:09,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:09,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:09,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:09,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:09,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:09,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:09,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:09,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:09,296 INFO L134 CoverageAnalysis]: Checked inductivity of 2617 backedges. 0 proven. 1439 refuted. 0 times theorem prover too weak. 1178 trivial. 0 not checked. [2021-12-06 18:37:09,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:37:09,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938032912] [2021-12-06 18:37:09,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938032912] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:37:09,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799551081] [2021-12-06 18:37:09,296 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 18:37:09,296 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:37:09,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:37:09,297 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:37:09,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-12-06 18:37:09,869 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 18:37:09,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:37:09,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 90 conjunts are in the unsatisfiable core [2021-12-06 18:37:09,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:37:11,898 INFO L134 CoverageAnalysis]: Checked inductivity of 2617 backedges. 0 proven. 1439 refuted. 0 times theorem prover too weak. 1178 trivial. 0 not checked. [2021-12-06 18:37:11,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:37:24,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799551081] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:37:24,092 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:37:24,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 69 [2021-12-06 18:37:24,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169277029] [2021-12-06 18:37:24,093 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:37:24,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2021-12-06 18:37:24,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:37:24,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-12-06 18:37:24,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=4884, Unknown=0, NotChecked=0, Total=5112 [2021-12-06 18:37:24,094 INFO L87 Difference]: Start difference. First operand 337 states and 366 transitions. Second operand has 70 states, 69 states have (on average 2.420289855072464) internal successors, (167), 69 states have internal predecessors, (167), 4 states have call successors, (5), 2 states have call predecessors, (5), 21 states have return successors, (42), 42 states have call predecessors, (42), 3 states have call successors, (42) [2021-12-06 18:37:30,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:37:30,067 INFO L93 Difference]: Finished difference Result 494 states and 536 transitions. [2021-12-06 18:37:30,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-12-06 18:37:30,067 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 69 states have (on average 2.420289855072464) internal successors, (167), 69 states have internal predecessors, (167), 4 states have call successors, (5), 2 states have call predecessors, (5), 21 states have return successors, (42), 42 states have call predecessors, (42), 3 states have call successors, (42) Word has length 250 [2021-12-06 18:37:30,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:37:30,069 INFO L225 Difference]: With dead ends: 494 [2021-12-06 18:37:30,069 INFO L226 Difference]: Without dead ends: 493 [2021-12-06 18:37:30,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 256 SyntacticMatches, 19 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3700 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=834, Invalid=18348, Unknown=0, NotChecked=0, Total=19182 [2021-12-06 18:37:30,071 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 450 mSDsluCounter, 1537 mSDsCounter, 0 mSdLazyCounter, 6729 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 1571 SdHoareTripleChecker+Invalid, 6991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 6729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:37:30,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [493 Valid, 1571 Invalid, 6991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 6729 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-12-06 18:37:30,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2021-12-06 18:37:30,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 342. [2021-12-06 18:37:30,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 273 states have (on average 1.0256410256410255) internal successors, (280), 272 states have internal predecessors, (280), 9 states have call successors, (9), 6 states have call predecessors, (9), 59 states have return successors, (83), 63 states have call predecessors, (83), 7 states have call successors, (83) [2021-12-06 18:37:30,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 372 transitions. [2021-12-06 18:37:30,081 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 372 transitions. Word has length 250 [2021-12-06 18:37:30,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:37:30,081 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 372 transitions. [2021-12-06 18:37:30,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 69 states have (on average 2.420289855072464) internal successors, (167), 69 states have internal predecessors, (167), 4 states have call successors, (5), 2 states have call predecessors, (5), 21 states have return successors, (42), 42 states have call predecessors, (42), 3 states have call successors, (42) [2021-12-06 18:37:30,081 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 372 transitions. [2021-12-06 18:37:30,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-12-06 18:37:30,082 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:37:30,082 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 20, 19, 19, 19, 19, 19, 19, 18, 18, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:37:30,107 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2021-12-06 18:37:30,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-12-06 18:37:30,283 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-06 18:37:30,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:37:30,285 INFO L85 PathProgramCache]: Analyzing trace with hash 318447920, now seen corresponding path program 14 times [2021-12-06 18:37:30,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:37:30,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617480441] [2021-12-06 18:37:30,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:37:30,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:37:30,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:30,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:37:30,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:30,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:30,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:30,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 18:37:30,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:30,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:30,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:30,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:30,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:30,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:30,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:30,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:30,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:30,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:30,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:30,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:30,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:30,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:30,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:30,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:30,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:30,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:30,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:30,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:30,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:31,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:31,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:31,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:31,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:31,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:31,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:31,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:31,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:31,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:31,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:31,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:31,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:31,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:31,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:31,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2018 backedges. 2 proven. 1144 refuted. 0 times theorem prover too weak. 872 trivial. 0 not checked. [2021-12-06 18:37:31,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:37:31,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617480441] [2021-12-06 18:37:31,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617480441] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:37:31,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671427488] [2021-12-06 18:37:31,434 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 18:37:31,434 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:37:31,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:37:31,434 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:37:31,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-12-06 18:37:32,043 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 18:37:32,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:37:32,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 74 conjunts are in the unsatisfiable core [2021-12-06 18:37:32,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:37:33,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2018 backedges. 253 proven. 887 refuted. 0 times theorem prover too weak. 878 trivial. 0 not checked. [2021-12-06 18:37:33,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:37:41,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671427488] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:37:41,505 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:37:41,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 41] total 66 [2021-12-06 18:37:41,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968392325] [2021-12-06 18:37:41,506 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:37:41,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2021-12-06 18:37:41,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:37:41,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-12-06 18:37:41,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=4478, Unknown=0, NotChecked=0, Total=4692 [2021-12-06 18:37:41,507 INFO L87 Difference]: Start difference. First operand 342 states and 372 transitions. Second operand has 67 states, 66 states have (on average 2.621212121212121) internal successors, (173), 65 states have internal predecessors, (173), 8 states have call successors, (10), 3 states have call predecessors, (10), 21 states have return successors, (40), 40 states have call predecessors, (40), 7 states have call successors, (40) [2021-12-06 18:37:50,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:37:50,214 INFO L93 Difference]: Finished difference Result 450 states and 483 transitions. [2021-12-06 18:37:50,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2021-12-06 18:37:50,215 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 66 states have (on average 2.621212121212121) internal successors, (173), 65 states have internal predecessors, (173), 8 states have call successors, (10), 3 states have call predecessors, (10), 21 states have return successors, (40), 40 states have call predecessors, (40), 7 states have call successors, (40) Word has length 223 [2021-12-06 18:37:50,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:37:50,216 INFO L225 Difference]: With dead ends: 450 [2021-12-06 18:37:50,216 INFO L226 Difference]: Without dead ends: 443 [2021-12-06 18:37:50,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 227 SyntacticMatches, 16 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7232 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=1608, Invalid=30254, Unknown=0, NotChecked=0, Total=31862 [2021-12-06 18:37:50,218 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 385 mSDsluCounter, 2156 mSDsCounter, 0 mSdLazyCounter, 10197 mSolverCounterSat, 317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 2202 SdHoareTripleChecker+Invalid, 10514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 317 IncrementalHoareTripleChecker+Valid, 10197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-12-06 18:37:50,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [385 Valid, 2202 Invalid, 10514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [317 Valid, 10197 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2021-12-06 18:37:50,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2021-12-06 18:37:50,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 244. [2021-12-06 18:37:50,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 195 states have (on average 1.0256410256410255) internal successors, (200), 194 states have internal predecessors, (200), 6 states have call successors, (6), 4 states have call predecessors, (6), 42 states have return successors, (65), 45 states have call predecessors, (65), 5 states have call successors, (65) [2021-12-06 18:37:50,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 271 transitions. [2021-12-06 18:37:50,224 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 271 transitions. Word has length 223 [2021-12-06 18:37:50,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:37:50,225 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 271 transitions. [2021-12-06 18:37:50,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 66 states have (on average 2.621212121212121) internal successors, (173), 65 states have internal predecessors, (173), 8 states have call successors, (10), 3 states have call predecessors, (10), 21 states have return successors, (40), 40 states have call predecessors, (40), 7 states have call successors, (40) [2021-12-06 18:37:50,225 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 271 transitions. [2021-12-06 18:37:50,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2021-12-06 18:37:50,226 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:37:50,226 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 22, 22, 22, 21, 21, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:37:50,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-12-06 18:37:50,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-12-06 18:37:50,427 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-06 18:37:50,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:37:50,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1802010917, now seen corresponding path program 17 times [2021-12-06 18:37:50,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:37:50,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451124557] [2021-12-06 18:37:50,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:37:50,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:37:50,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:50,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 18:37:50,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:50,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:50,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:50,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:50,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:50,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:50,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:50,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:50,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:50,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:50,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:50,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:50,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:50,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:50,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:51,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:51,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:51,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:51,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:51,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:51,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:51,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:51,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:51,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:51,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:51,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:51,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:51,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:51,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:51,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:51,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:51,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:51,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:51,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:51,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:51,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:51,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:51,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:51,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:51,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:51,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:37:51,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:51,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2586 backedges. 0 proven. 1305 refuted. 0 times theorem prover too weak. 1281 trivial. 0 not checked. [2021-12-06 18:37:51,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:37:51,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451124557] [2021-12-06 18:37:51,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451124557] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:37:51,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085756249] [2021-12-06 18:37:51,959 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 18:37:51,959 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:37:51,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:37:51,959 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:37:51,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-12-06 18:37:52,621 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-12-06 18:37:52,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:37:52,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 90 conjunts are in the unsatisfiable core [2021-12-06 18:37:52,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:37:54,883 INFO L134 CoverageAnalysis]: Checked inductivity of 2586 backedges. 0 proven. 1305 refuted. 0 times theorem prover too weak. 1281 trivial. 0 not checked. [2021-12-06 18:37:54,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:38:08,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085756249] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:38:08,362 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:38:08,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 72 [2021-12-06 18:38:08,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618368520] [2021-12-06 18:38:08,362 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:38:08,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2021-12-06 18:38:08,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:38:08,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-12-06 18:38:08,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=5312, Unknown=0, NotChecked=0, Total=5550 [2021-12-06 18:38:08,363 INFO L87 Difference]: Start difference. First operand 244 states and 271 transitions. Second operand has 73 states, 72 states have (on average 2.4166666666666665) internal successors, (174), 72 states have internal predecessors, (174), 4 states have call successors, (4), 2 states have call predecessors, (4), 22 states have return successors, (44), 44 states have call predecessors, (44), 3 states have call successors, (44) [2021-12-06 18:38:14,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:38:14,497 INFO L93 Difference]: Finished difference Result 385 states and 417 transitions. [2021-12-06 18:38:14,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-12-06 18:38:14,497 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 72 states have (on average 2.4166666666666665) internal successors, (174), 72 states have internal predecessors, (174), 4 states have call successors, (4), 2 states have call predecessors, (4), 22 states have return successors, (44), 44 states have call predecessors, (44), 3 states have call successors, (44) Word has length 249 [2021-12-06 18:38:14,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:38:14,499 INFO L225 Difference]: With dead ends: 385 [2021-12-06 18:38:14,499 INFO L226 Difference]: Without dead ends: 384 [2021-12-06 18:38:14,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 251 SyntacticMatches, 20 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3972 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=857, Invalid=19735, Unknown=0, NotChecked=0, Total=20592 [2021-12-06 18:38:14,500 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 323 mSDsluCounter, 1596 mSDsCounter, 0 mSdLazyCounter, 7062 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 7246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 7062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:38:14,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [368 Valid, 1631 Invalid, 7246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 7062 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-12-06 18:38:14,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2021-12-06 18:38:14,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 249. [2021-12-06 18:38:14,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 199 states have (on average 1.0251256281407035) internal successors, (204), 198 states have internal predecessors, (204), 6 states have call successors, (6), 4 states have call predecessors, (6), 43 states have return successors, (67), 46 states have call predecessors, (67), 5 states have call successors, (67) [2021-12-06 18:38:14,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 277 transitions. [2021-12-06 18:38:14,507 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 277 transitions. Word has length 249 [2021-12-06 18:38:14,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:38:14,508 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 277 transitions. [2021-12-06 18:38:14,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 72 states have (on average 2.4166666666666665) internal successors, (174), 72 states have internal predecessors, (174), 4 states have call successors, (4), 2 states have call predecessors, (4), 22 states have return successors, (44), 44 states have call predecessors, (44), 3 states have call successors, (44) [2021-12-06 18:38:14,508 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 277 transitions. [2021-12-06 18:38:14,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2021-12-06 18:38:14,509 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:38:14,509 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 22, 22, 22, 22, 21, 20, 20, 19, 19, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:38:14,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2021-12-06 18:38:14,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:38:14,710 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-06 18:38:14,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:38:14,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1547571436, now seen corresponding path program 15 times [2021-12-06 18:38:14,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:38:14,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513705183] [2021-12-06 18:38:14,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:38:14,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:38:14,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:38:14,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:38:14,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:38:14,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:38:14,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:38:14,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 18:38:14,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:38:14,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:38:14,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:38:14,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:38:14,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:38:15,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:38:15,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:38:15,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:38:15,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:38:15,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:38:15,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:38:15,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:38:15,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:38:15,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:38:15,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:38:15,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:38:15,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:38:15,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:38:15,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:38:15,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:38:15,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:38:15,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:38:15,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:38:15,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:38:15,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:38:15,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:38:15,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:38:15,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:38:15,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:38:15,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:38:15,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:38:15,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:38:15,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:38:15,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:38:15,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:38:15,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:38:15,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:38:16,005 INFO L134 CoverageAnalysis]: Checked inductivity of 2492 backedges. 6 proven. 1491 refuted. 0 times theorem prover too weak. 995 trivial. 0 not checked. [2021-12-06 18:38:16,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:38:16,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513705183] [2021-12-06 18:38:16,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513705183] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:38:16,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725515966] [2021-12-06 18:38:16,005 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 18:38:16,005 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:38:16,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:38:16,006 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:38:16,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-12-06 18:38:16,748 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2021-12-06 18:38:16,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:38:16,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 168 conjunts are in the unsatisfiable core [2021-12-06 18:38:16,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:38:19,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2492 backedges. 92 proven. 1489 refuted. 0 times theorem prover too weak. 911 trivial. 0 not checked. [2021-12-06 18:38:19,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:38:24,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2492 backedges. 171 proven. 1491 refuted. 0 times theorem prover too weak. 830 trivial. 0 not checked. [2021-12-06 18:38:24,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725515966] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:38:24,690 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:38:24,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 48, 50] total 117 [2021-12-06 18:38:24,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112309195] [2021-12-06 18:38:24,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:38:24,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 118 states [2021-12-06 18:38:24,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:38:24,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2021-12-06 18:38:24,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=490, Invalid=13316, Unknown=0, NotChecked=0, Total=13806 [2021-12-06 18:38:24,693 INFO L87 Difference]: Start difference. First operand 249 states and 277 transitions. Second operand has 118 states, 117 states have (on average 2.282051282051282) internal successors, (267), 114 states have internal predecessors, (267), 9 states have call successors, (12), 3 states have call predecessors, (12), 44 states have return successors, (62), 61 states have call predecessors, (62), 7 states have call successors, (62) [2021-12-06 18:38:36,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:38:36,323 INFO L93 Difference]: Finished difference Result 500 states and 539 transitions. [2021-12-06 18:38:36,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2021-12-06 18:38:36,323 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 117 states have (on average 2.282051282051282) internal successors, (267), 114 states have internal predecessors, (267), 9 states have call successors, (12), 3 states have call predecessors, (12), 44 states have return successors, (62), 61 states have call predecessors, (62), 7 states have call successors, (62) Word has length 246 [2021-12-06 18:38:36,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:38:36,325 INFO L225 Difference]: With dead ends: 500 [2021-12-06 18:38:36,325 INFO L226 Difference]: Without dead ends: 493 [2021-12-06 18:38:36,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 693 GetRequests, 449 SyntacticMatches, 17 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15482 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=3384, Invalid=48828, Unknown=0, NotChecked=0, Total=52212 [2021-12-06 18:38:36,328 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 395 mSDsluCounter, 2512 mSDsCounter, 0 mSdLazyCounter, 11054 mSolverCounterSat, 382 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 2558 SdHoareTripleChecker+Invalid, 11436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 382 IncrementalHoareTripleChecker+Valid, 11054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-12-06 18:38:36,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [395 Valid, 2558 Invalid, 11436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [382 Valid, 11054 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2021-12-06 18:38:36,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2021-12-06 18:38:36,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 377. [2021-12-06 18:38:36,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 301 states have (on average 1.0232558139534884) internal successors, (308), 300 states have internal predecessors, (308), 9 states have call successors, (9), 6 states have call predecessors, (9), 66 states have return successors, (91), 70 states have call predecessors, (91), 7 states have call successors, (91) [2021-12-06 18:38:36,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 408 transitions. [2021-12-06 18:38:36,338 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 408 transitions. Word has length 246 [2021-12-06 18:38:36,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:38:36,338 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 408 transitions. [2021-12-06 18:38:36,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 118 states, 117 states have (on average 2.282051282051282) internal successors, (267), 114 states have internal predecessors, (267), 9 states have call successors, (12), 3 states have call predecessors, (12), 44 states have return successors, (62), 61 states have call predecessors, (62), 7 states have call successors, (62) [2021-12-06 18:38:36,338 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 408 transitions. [2021-12-06 18:38:36,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2021-12-06 18:38:36,340 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:38:36,340 INFO L514 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 23, 23, 23, 22, 22, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:38:36,365 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2021-12-06 18:38:36,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-12-06 18:38:36,540 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-06 18:38:36,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:38:36,541 INFO L85 PathProgramCache]: Analyzing trace with hash 362637449, now seen corresponding path program 18 times [2021-12-06 18:38:36,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:38:36,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28647061] [2021-12-06 18:38:36,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:38:36,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:38:36,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:38:36,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 18:38:36,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:38:36,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:38:36,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:38:36,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:38:36,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:38:36,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:38:36,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:38:36,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:38:36,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:38:36,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:38:36,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:38:37,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:38:37,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:38:37,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:38:37,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:38:37,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:38:37,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:38:37,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:38:37,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:38:37,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:38:37,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:38:37,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:38:37,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:38:37,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:38:37,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:38:37,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:38:37,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:38:37,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:38:37,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:38:37,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:38:37,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:38:37,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:38:37,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:38:37,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:38:37,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:38:37,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:38:37,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:38:37,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:38:37,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:38:38,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:38:38,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:38:38,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:38:38,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:38:38,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:38:38,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:38:38,291 INFO L134 CoverageAnalysis]: Checked inductivity of 3118 backedges. 0 proven. 1692 refuted. 0 times theorem prover too weak. 1426 trivial. 0 not checked. [2021-12-06 18:38:38,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:38:38,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28647061] [2021-12-06 18:38:38,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28647061] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:38:38,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603379601] [2021-12-06 18:38:38,292 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 18:38:38,292 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:38:38,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:38:38,292 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:38:38,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-12-06 18:38:39,055 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s) [2021-12-06 18:38:39,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:38:39,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 98 conjunts are in the unsatisfiable core [2021-12-06 18:38:39,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:38:41,613 INFO L134 CoverageAnalysis]: Checked inductivity of 3118 backedges. 0 proven. 1692 refuted. 0 times theorem prover too weak. 1426 trivial. 0 not checked. [2021-12-06 18:38:41,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:38:56,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603379601] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:38:56,641 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:38:56,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 75 [2021-12-06 18:38:56,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652904947] [2021-12-06 18:38:56,641 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:38:56,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2021-12-06 18:38:56,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:38:56,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-12-06 18:38:56,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=5758, Unknown=0, NotChecked=0, Total=6006 [2021-12-06 18:38:56,642 INFO L87 Difference]: Start difference. First operand 377 states and 408 transitions. Second operand has 76 states, 75 states have (on average 2.4133333333333336) internal successors, (181), 75 states have internal predecessors, (181), 4 states have call successors, (5), 2 states have call predecessors, (5), 23 states have return successors, (46), 46 states have call predecessors, (46), 3 states have call successors, (46) [2021-12-06 18:39:03,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:39:03,584 INFO L93 Difference]: Finished difference Result 534 states and 574 transitions. [2021-12-06 18:39:03,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-12-06 18:39:03,584 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 75 states have (on average 2.4133333333333336) internal successors, (181), 75 states have internal predecessors, (181), 4 states have call successors, (5), 2 states have call predecessors, (5), 23 states have return successors, (46), 46 states have call predecessors, (46), 3 states have call successors, (46) Word has length 272 [2021-12-06 18:39:03,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:39:03,586 INFO L225 Difference]: With dead ends: 534 [2021-12-06 18:39:03,586 INFO L226 Difference]: Without dead ends: 533 [2021-12-06 18:39:03,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 278 SyntacticMatches, 21 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4398 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=908, Invalid=21742, Unknown=0, NotChecked=0, Total=22650 [2021-12-06 18:39:03,588 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 483 mSDsluCounter, 1771 mSDsCounter, 0 mSdLazyCounter, 7973 mSolverCounterSat, 287 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 1807 SdHoareTripleChecker+Invalid, 8260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 287 IncrementalHoareTripleChecker+Valid, 7973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-12-06 18:39:03,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [530 Valid, 1807 Invalid, 8260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [287 Valid, 7973 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-12-06 18:39:03,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2021-12-06 18:39:03,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 382. [2021-12-06 18:39:03,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 305 states have (on average 1.022950819672131) internal successors, (312), 304 states have internal predecessors, (312), 9 states have call successors, (9), 6 states have call predecessors, (9), 67 states have return successors, (93), 71 states have call predecessors, (93), 7 states have call successors, (93) [2021-12-06 18:39:03,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 414 transitions. [2021-12-06 18:39:03,597 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 414 transitions. Word has length 272 [2021-12-06 18:39:03,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:39:03,598 INFO L470 AbstractCegarLoop]: Abstraction has 382 states and 414 transitions. [2021-12-06 18:39:03,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 75 states have (on average 2.4133333333333336) internal successors, (181), 75 states have internal predecessors, (181), 4 states have call successors, (5), 2 states have call predecessors, (5), 23 states have return successors, (46), 46 states have call predecessors, (46), 3 states have call successors, (46) [2021-12-06 18:39:03,598 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 414 transitions. [2021-12-06 18:39:03,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2021-12-06 18:39:03,599 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:39:03,600 INFO L514 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 24, 24, 24, 23, 23, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:39:03,624 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2021-12-06 18:39:03,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:39:03,800 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-06 18:39:03,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:39:03,801 INFO L85 PathProgramCache]: Analyzing trace with hash 2037085981, now seen corresponding path program 19 times [2021-12-06 18:39:03,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:39:03,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606857850] [2021-12-06 18:39:03,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:39:03,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:39:03,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:39:03,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 18:39:03,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:39:04,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:39:04,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:39:04,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:39:04,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:39:04,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:39:04,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:39:04,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:39:04,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:39:04,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:39:04,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:39:04,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:39:04,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:39:04,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:39:04,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:39:04,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:39:04,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:39:04,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:39:04,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:39:04,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:39:04,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:39:04,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:39:04,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:39:04,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:39:04,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:39:04,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:39:04,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:39:04,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:39:04,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:39:04,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:39:04,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:39:05,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:39:05,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:39:05,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:39:05,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:39:05,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:39:05,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:39:05,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:39:05,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:39:05,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:39:05,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:39:05,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:39:05,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:39:05,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:39:05,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:39:05,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:39:05,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:39:05,620 INFO L134 CoverageAnalysis]: Checked inductivity of 3085 backedges. 0 proven. 1544 refuted. 0 times theorem prover too weak. 1541 trivial. 0 not checked. [2021-12-06 18:39:05,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:39:05,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606857850] [2021-12-06 18:39:05,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606857850] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:39:05,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296812268] [2021-12-06 18:39:05,620 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 18:39:05,620 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:39:05,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:39:05,621 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:39:05,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-12-06 18:39:06,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:39:06,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 98 conjunts are in the unsatisfiable core [2021-12-06 18:39:06,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:39:09,160 INFO L134 CoverageAnalysis]: Checked inductivity of 3085 backedges. 0 proven. 1544 refuted. 0 times theorem prover too weak. 1541 trivial. 0 not checked. [2021-12-06 18:39:09,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:39:26,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296812268] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:39:26,074 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:39:26,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 78 [2021-12-06 18:39:26,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445617846] [2021-12-06 18:39:26,074 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:39:26,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2021-12-06 18:39:26,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:39:26,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-12-06 18:39:26,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=6222, Unknown=0, NotChecked=0, Total=6480 [2021-12-06 18:39:26,075 INFO L87 Difference]: Start difference. First operand 382 states and 414 transitions. Second operand has 79 states, 78 states have (on average 2.41025641025641) internal successors, (188), 78 states have internal predecessors, (188), 4 states have call successors, (4), 2 states have call predecessors, (4), 24 states have return successors, (48), 48 states have call predecessors, (48), 3 states have call successors, (48) [2021-12-06 18:39:34,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:39:34,093 INFO L93 Difference]: Finished difference Result 557 states and 601 transitions. [2021-12-06 18:39:34,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2021-12-06 18:39:34,093 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 78 states have (on average 2.41025641025641) internal successors, (188), 78 states have internal predecessors, (188), 4 states have call successors, (4), 2 states have call predecessors, (4), 24 states have return successors, (48), 48 states have call predecessors, (48), 3 states have call successors, (48) Word has length 271 [2021-12-06 18:39:34,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:39:34,095 INFO L225 Difference]: With dead ends: 557 [2021-12-06 18:39:34,095 INFO L226 Difference]: Without dead ends: 556 [2021-12-06 18:39:34,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 273 SyntacticMatches, 22 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4843 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=962, Invalid=23844, Unknown=0, NotChecked=0, Total=24806 [2021-12-06 18:39:34,098 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 349 mSDsluCounter, 2085 mSDsCounter, 0 mSdLazyCounter, 9445 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 2122 SdHoareTripleChecker+Invalid, 9659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 9445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-12-06 18:39:34,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [398 Valid, 2122 Invalid, 9659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 9445 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2021-12-06 18:39:34,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-12-06 18:39:34,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 387. [2021-12-06 18:39:34,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 309 states have (on average 1.022653721682848) internal successors, (316), 308 states have internal predecessors, (316), 9 states have call successors, (9), 6 states have call predecessors, (9), 68 states have return successors, (95), 72 states have call predecessors, (95), 7 states have call successors, (95) [2021-12-06 18:39:34,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 420 transitions. [2021-12-06 18:39:34,113 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 420 transitions. Word has length 271 [2021-12-06 18:39:34,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:39:34,113 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 420 transitions. [2021-12-06 18:39:34,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 78 states have (on average 2.41025641025641) internal successors, (188), 78 states have internal predecessors, (188), 4 states have call successors, (4), 2 states have call predecessors, (4), 24 states have return successors, (48), 48 states have call predecessors, (48), 3 states have call successors, (48) [2021-12-06 18:39:34,113 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 420 transitions. [2021-12-06 18:39:34,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-12-06 18:39:34,115 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:39:34,115 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 22, 21, 21, 21, 21, 21, 21, 20, 20, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:39:34,141 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2021-12-06 18:39:34,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:39:34,316 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-06 18:39:34,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:39:34,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1363720324, now seen corresponding path program 16 times [2021-12-06 18:39:34,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:39:34,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733641017] [2021-12-06 18:39:34,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:39:34,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:39:34,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:39:34,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:39:34,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:39:34,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:39:34,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:39:34,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:39:34,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:39:34,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 18:39:34,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:39:34,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:39:34,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:39:34,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:39:34,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:39:34,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:39:34,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:39:34,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:39:34,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:39:34,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:39:34,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:39:34,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:39:34,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:39:34,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:39:34,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:39:34,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:39:34,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:39:34,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:39:34,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:39:35,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:39:35,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:39:35,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:39:35,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:39:35,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:39:35,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:39:35,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:39:35,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:39:35,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:39:35,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:39:35,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:39:35,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:39:35,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:39:35,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:39:35,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:39:35,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:39:35,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:39:35,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:39:35,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2461 backedges. 457 proven. 984 refuted. 0 times theorem prover too weak. 1020 trivial. 0 not checked. [2021-12-06 18:39:35,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:39:35,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733641017] [2021-12-06 18:39:35,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733641017] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:39:35,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397526779] [2021-12-06 18:39:35,598 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 18:39:35,598 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:39:35,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:39:35,598 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:39:35,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-12-06 18:39:36,505 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 18:39:36,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:39:36,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 84 conjunts are in the unsatisfiable core [2021-12-06 18:39:36,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:39:38,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2461 backedges. 3 proven. 1453 refuted. 0 times theorem prover too weak. 1005 trivial. 0 not checked. [2021-12-06 18:39:38,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:40:26,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397526779] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:40:26,538 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:40:26,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 47] total 70 [2021-12-06 18:40:26,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118544885] [2021-12-06 18:40:26,539 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:40:26,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2021-12-06 18:40:26,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:40:26,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-12-06 18:40:26,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=5350, Unknown=15, NotChecked=0, Total=5700 [2021-12-06 18:40:26,540 INFO L87 Difference]: Start difference. First operand 387 states and 420 transitions. Second operand has 71 states, 70 states have (on average 2.6285714285714286) internal successors, (184), 69 states have internal predecessors, (184), 8 states have call successors, (10), 3 states have call predecessors, (10), 23 states have return successors, (43), 43 states have call predecessors, (43), 7 states have call successors, (43) [2021-12-06 18:40:36,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:40:36,826 INFO L93 Difference]: Finished difference Result 601 states and 638 transitions. [2021-12-06 18:40:36,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2021-12-06 18:40:36,826 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 70 states have (on average 2.6285714285714286) internal successors, (184), 69 states have internal predecessors, (184), 8 states have call successors, (10), 3 states have call predecessors, (10), 23 states have return successors, (43), 43 states have call predecessors, (43), 7 states have call successors, (43) Word has length 245 [2021-12-06 18:40:36,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:40:36,828 INFO L225 Difference]: With dead ends: 601 [2021-12-06 18:40:36,828 INFO L226 Difference]: Without dead ends: 596 [2021-12-06 18:40:36,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 251 SyntacticMatches, 17 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8397 ImplicationChecksByTransitivity, 38.9s TimeCoverageRelationStatistics Valid=2103, Invalid=34554, Unknown=15, NotChecked=0, Total=36672 [2021-12-06 18:40:36,830 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 423 mSDsluCounter, 2270 mSDsCounter, 0 mSdLazyCounter, 10775 mSolverCounterSat, 352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 2318 SdHoareTripleChecker+Invalid, 11127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 352 IncrementalHoareTripleChecker+Valid, 10775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-12-06 18:40:36,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [423 Valid, 2318 Invalid, 11127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [352 Valid, 10775 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2021-12-06 18:40:36,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-12-06 18:40:36,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 392. [2021-12-06 18:40:36,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 313 states have (on average 1.0223642172523961) internal successors, (320), 312 states have internal predecessors, (320), 9 states have call successors, (9), 6 states have call predecessors, (9), 69 states have return successors, (96), 73 states have call predecessors, (96), 7 states have call successors, (96) [2021-12-06 18:40:36,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 425 transitions. [2021-12-06 18:40:36,840 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 425 transitions. Word has length 245 [2021-12-06 18:40:36,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:40:36,840 INFO L470 AbstractCegarLoop]: Abstraction has 392 states and 425 transitions. [2021-12-06 18:40:36,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 70 states have (on average 2.6285714285714286) internal successors, (184), 69 states have internal predecessors, (184), 8 states have call successors, (10), 3 states have call predecessors, (10), 23 states have return successors, (43), 43 states have call predecessors, (43), 7 states have call successors, (43) [2021-12-06 18:40:36,841 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 425 transitions. [2021-12-06 18:40:36,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2021-12-06 18:40:36,842 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:40:36,842 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 27, 27, 27, 27, 25, 25, 25, 24, 24, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:40:36,867 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2021-12-06 18:40:37,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:40:37,043 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-06 18:40:37,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:40:37,044 INFO L85 PathProgramCache]: Analyzing trace with hash -897531449, now seen corresponding path program 20 times [2021-12-06 18:40:37,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:40:37,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270658038] [2021-12-06 18:40:37,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:40:37,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:40:37,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:40:37,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 18:40:37,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:40:37,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:40:37,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:40:37,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:40:37,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:40:37,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:40:37,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:40:37,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:40:37,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:40:37,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:40:37,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:40:37,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:40:37,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:40:37,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:40:37,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:40:37,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:40:37,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:40:37,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:40:37,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:40:37,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:40:37,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:40:37,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:40:37,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:40:38,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:40:38,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:40:38,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:40:38,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:40:38,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:40:38,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:40:38,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:40:38,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:40:38,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:40:38,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:40:38,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:40:38,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:40:38,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:40:38,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:40:38,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:40:38,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:40:38,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:40:38,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:40:38,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:40:38,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:40:38,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:40:38,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:40:38,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:40:38,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:40:38,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:40:38,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:40:39,030 INFO L134 CoverageAnalysis]: Checked inductivity of 3663 backedges. 0 proven. 1965 refuted. 0 times theorem prover too weak. 1698 trivial. 0 not checked. [2021-12-06 18:40:39,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:40:39,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270658038] [2021-12-06 18:40:39,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270658038] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:40:39,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098719316] [2021-12-06 18:40:39,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 18:40:39,030 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:40:39,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:40:39,031 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:40:39,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-12-06 18:40:40,047 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 18:40:40,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:40:40,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 106 conjunts are in the unsatisfiable core [2021-12-06 18:40:40,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:40:42,973 INFO L134 CoverageAnalysis]: Checked inductivity of 3663 backedges. 0 proven. 1965 refuted. 0 times theorem prover too weak. 1698 trivial. 0 not checked. [2021-12-06 18:40:42,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:41:02,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098719316] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:41:02,057 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:41:02,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 81 [2021-12-06 18:41:02,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67870113] [2021-12-06 18:41:02,057 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:41:02,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2021-12-06 18:41:02,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:41:02,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-12-06 18:41:02,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=6704, Unknown=0, NotChecked=0, Total=6972 [2021-12-06 18:41:02,059 INFO L87 Difference]: Start difference. First operand 392 states and 425 transitions. Second operand has 82 states, 81 states have (on average 2.4074074074074074) internal successors, (195), 81 states have internal predecessors, (195), 4 states have call successors, (5), 2 states have call predecessors, (5), 25 states have return successors, (50), 50 states have call predecessors, (50), 3 states have call successors, (50) [2021-12-06 18:41:09,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:41:09,808 INFO L93 Difference]: Finished difference Result 577 states and 624 transitions. [2021-12-06 18:41:09,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2021-12-06 18:41:09,808 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 81 states have (on average 2.4074074074074074) internal successors, (195), 81 states have internal predecessors, (195), 4 states have call successors, (5), 2 states have call predecessors, (5), 25 states have return successors, (50), 50 states have call predecessors, (50), 3 states have call successors, (50) Word has length 294 [2021-12-06 18:41:09,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:41:09,810 INFO L225 Difference]: With dead ends: 577 [2021-12-06 18:41:09,810 INFO L226 Difference]: Without dead ends: 576 [2021-12-06 18:41:09,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 300 SyntacticMatches, 23 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5233 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=999, Invalid=25733, Unknown=0, NotChecked=0, Total=26732 [2021-12-06 18:41:09,812 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 522 mSDsluCounter, 2121 mSDsCounter, 0 mSdLazyCounter, 9579 mSolverCounterSat, 315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 2159 SdHoareTripleChecker+Invalid, 9894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Valid, 9579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:41:09,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [573 Valid, 2159 Invalid, 9894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [315 Valid, 9579 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2021-12-06 18:41:09,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2021-12-06 18:41:09,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 397. [2021-12-06 18:41:09,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 317 states have (on average 1.0220820189274449) internal successors, (324), 316 states have internal predecessors, (324), 9 states have call successors, (9), 6 states have call predecessors, (9), 70 states have return successors, (98), 74 states have call predecessors, (98), 7 states have call successors, (98) [2021-12-06 18:41:09,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 431 transitions. [2021-12-06 18:41:09,823 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 431 transitions. Word has length 294 [2021-12-06 18:41:09,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:41:09,823 INFO L470 AbstractCegarLoop]: Abstraction has 397 states and 431 transitions. [2021-12-06 18:41:09,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 81 states have (on average 2.4074074074074074) internal successors, (195), 81 states have internal predecessors, (195), 4 states have call successors, (5), 2 states have call predecessors, (5), 25 states have return successors, (50), 50 states have call predecessors, (50), 3 states have call successors, (50) [2021-12-06 18:41:09,823 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 431 transitions. [2021-12-06 18:41:09,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2021-12-06 18:41:09,825 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:41:09,825 INFO L514 BasicCegarLoop]: trace histogram [25, 25, 24, 23, 23, 23, 23, 23, 23, 22, 22, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:41:09,850 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2021-12-06 18:41:10,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:41:10,027 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-06 18:41:10,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:41:10,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1699807284, now seen corresponding path program 17 times [2021-12-06 18:41:10,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:41:10,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963599372] [2021-12-06 18:41:10,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:41:10,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:41:10,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:41:10,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:41:10,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:41:10,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:41:10,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:41:10,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 18:41:10,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:41:10,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:41:10,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:41:10,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:41:10,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:41:10,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:41:10,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:41:10,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:41:10,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:41:10,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:41:10,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:41:10,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:41:10,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:41:10,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:41:10,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:41:10,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:41:10,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:41:10,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:41:10,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:41:10,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:41:10,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:41:10,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:41:10,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:41:10,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:41:11,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:41:11,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:41:11,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:41:11,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:41:11,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:41:11,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:41:11,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:41:11,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:41:11,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:41:11,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:41:11,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:41:11,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:41:11,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:41:11,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:41:11,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:41:11,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:41:11,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:41:11,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:41:11,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:41:11,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2948 backedges. 2 proven. 1618 refuted. 0 times theorem prover too weak. 1328 trivial. 0 not checked. [2021-12-06 18:41:11,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:41:11,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963599372] [2021-12-06 18:41:11,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963599372] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:41:11,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483250942] [2021-12-06 18:41:11,717 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 18:41:11,717 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:41:11,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:41:11,718 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:41:11,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-12-06 18:41:12,801 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2021-12-06 18:41:12,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:41:12,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 90 conjunts are in the unsatisfiable core [2021-12-06 18:41:12,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:41:15,369 INFO L134 CoverageAnalysis]: Checked inductivity of 2948 backedges. 309 proven. 1305 refuted. 0 times theorem prover too weak. 1334 trivial. 0 not checked. [2021-12-06 18:41:15,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:41:29,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483250942] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:41:29,220 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:41:29,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 49] total 78 [2021-12-06 18:41:29,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172293847] [2021-12-06 18:41:29,221 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:41:29,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2021-12-06 18:41:29,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:41:29,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-12-06 18:41:29,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=6226, Unknown=0, NotChecked=0, Total=6480 [2021-12-06 18:41:29,222 INFO L87 Difference]: Start difference. First operand 397 states and 431 transitions. Second operand has 79 states, 78 states have (on average 2.576923076923077) internal successors, (201), 77 states have internal predecessors, (201), 8 states have call successors, (10), 3 states have call predecessors, (10), 25 states have return successors, (48), 48 states have call predecessors, (48), 7 states have call successors, (48) [2021-12-06 18:41:41,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:41:41,848 INFO L93 Difference]: Finished difference Result 532 states and 571 transitions. [2021-12-06 18:41:41,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2021-12-06 18:41:41,848 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 78 states have (on average 2.576923076923077) internal successors, (201), 77 states have internal predecessors, (201), 8 states have call successors, (10), 3 states have call predecessors, (10), 25 states have return successors, (48), 48 states have call predecessors, (48), 7 states have call successors, (48) Word has length 267 [2021-12-06 18:41:41,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:41:41,850 INFO L225 Difference]: With dead ends: 532 [2021-12-06 18:41:41,850 INFO L226 Difference]: Without dead ends: 523 [2021-12-06 18:41:41,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 271 SyntacticMatches, 20 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10688 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=1952, Invalid=44058, Unknown=0, NotChecked=0, Total=46010 [2021-12-06 18:41:41,853 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 461 mSDsluCounter, 3115 mSDsCounter, 0 mSdLazyCounter, 14868 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 3169 SdHoareTripleChecker+Invalid, 15254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 14868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-12-06 18:41:41,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [461 Valid, 3169 Invalid, 15254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 14868 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2021-12-06 18:41:41,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2021-12-06 18:41:41,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 284. [2021-12-06 18:41:41,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 227 states have (on average 1.0220264317180616) internal successors, (232), 226 states have internal predecessors, (232), 6 states have call successors, (6), 4 states have call predecessors, (6), 50 states have return successors, (77), 53 states have call predecessors, (77), 5 states have call successors, (77) [2021-12-06 18:41:41,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 315 transitions. [2021-12-06 18:41:41,859 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 315 transitions. Word has length 267 [2021-12-06 18:41:41,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:41:41,860 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 315 transitions. [2021-12-06 18:41:41,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 78 states have (on average 2.576923076923077) internal successors, (201), 77 states have internal predecessors, (201), 8 states have call successors, (10), 3 states have call predecessors, (10), 25 states have return successors, (48), 48 states have call predecessors, (48), 7 states have call successors, (48) [2021-12-06 18:41:41,860 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 315 transitions. [2021-12-06 18:41:41,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2021-12-06 18:41:41,861 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:41:41,862 INFO L514 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 28, 28, 26, 26, 26, 25, 25, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:41:41,897 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2021-12-06 18:41:42,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-12-06 18:41:42,063 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-06 18:41:42,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:41:42,064 INFO L85 PathProgramCache]: Analyzing trace with hash -251803007, now seen corresponding path program 21 times [2021-12-06 18:41:42,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:41:42,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817288270] [2021-12-06 18:41:42,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:41:42,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:41:42,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:41:42,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 18:41:42,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:41:42,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:41:42,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:41:42,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:41:42,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:41:42,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:41:42,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:41:42,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:41:42,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:41:42,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:41:42,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:41:42,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:41:42,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:41:42,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:41:42,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:41:42,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:41:42,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:41:42,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:41:42,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:41:42,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:41:43,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:41:43,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:41:43,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:41:43,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:41:43,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:41:43,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:41:43,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:41:43,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:41:43,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:41:43,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:41:43,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:41:43,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:41:43,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:41:43,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:41:43,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:41:43,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:41:43,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:41:43,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:41:43,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:41:43,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:41:43,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:41:43,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:41:43,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:41:43,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:41:43,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:41:44,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:41:44,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:41:44,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:41:44,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:41:44,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:41:44,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:41:44,227 INFO L134 CoverageAnalysis]: Checked inductivity of 3952 backedges. 0 proven. 2109 refuted. 0 times theorem prover too weak. 1843 trivial. 0 not checked. [2021-12-06 18:41:44,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:41:44,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817288270] [2021-12-06 18:41:44,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817288270] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:41:44,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592342099] [2021-12-06 18:41:44,227 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 18:41:44,228 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:41:44,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:41:44,228 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:41:44,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-12-06 18:41:45,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 29 check-sat command(s) [2021-12-06 18:41:45,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:41:45,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 673 conjuncts, 110 conjunts are in the unsatisfiable core [2021-12-06 18:41:45,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:41:48,372 INFO L134 CoverageAnalysis]: Checked inductivity of 3952 backedges. 0 proven. 2109 refuted. 0 times theorem prover too weak. 1843 trivial. 0 not checked. [2021-12-06 18:41:48,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:42:29,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592342099] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:42:29,789 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:42:29,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 84 [2021-12-06 18:42:29,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780199491] [2021-12-06 18:42:29,789 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:42:29,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2021-12-06 18:42:29,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:42:29,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2021-12-06 18:42:29,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=417, Invalid=7593, Unknown=0, NotChecked=0, Total=8010 [2021-12-06 18:42:29,790 INFO L87 Difference]: Start difference. First operand 284 states and 315 transitions. Second operand has 85 states, 84 states have (on average 2.4047619047619047) internal successors, (202), 84 states have internal predecessors, (202), 4 states have call successors, (5), 2 states have call predecessors, (5), 26 states have return successors, (52), 52 states have call predecessors, (52), 3 states have call successors, (52) [2021-12-06 18:42:38,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:42:38,491 INFO L93 Difference]: Finished difference Result 445 states and 481 transitions. [2021-12-06 18:42:38,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2021-12-06 18:42:38,491 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 84 states have (on average 2.4047619047619047) internal successors, (202), 84 states have internal predecessors, (202), 4 states have call successors, (5), 2 states have call predecessors, (5), 26 states have return successors, (52), 52 states have call predecessors, (52), 3 states have call successors, (52) Word has length 305 [2021-12-06 18:42:38,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:42:38,493 INFO L225 Difference]: With dead ends: 445 [2021-12-06 18:42:38,493 INFO L226 Difference]: Without dead ends: 444 [2021-12-06 18:42:38,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 314 SyntacticMatches, 24 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5713 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=1305, Invalid=27765, Unknown=0, NotChecked=0, Total=29070 [2021-12-06 18:42:38,496 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 539 mSDsluCounter, 2328 mSDsCounter, 0 mSdLazyCounter, 10403 mSolverCounterSat, 317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 2367 SdHoareTripleChecker+Invalid, 10720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 317 IncrementalHoareTripleChecker+Valid, 10403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-12-06 18:42:38,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [592 Valid, 2367 Invalid, 10720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [317 Valid, 10403 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2021-12-06 18:42:38,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-12-06 18:42:38,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 289. [2021-12-06 18:42:38,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 231 states have (on average 1.0216450216450217) internal successors, (236), 230 states have internal predecessors, (236), 6 states have call successors, (6), 4 states have call predecessors, (6), 51 states have return successors, (79), 54 states have call predecessors, (79), 5 states have call successors, (79) [2021-12-06 18:42:38,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 321 transitions. [2021-12-06 18:42:38,504 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 321 transitions. Word has length 305 [2021-12-06 18:42:38,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:42:38,504 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 321 transitions. [2021-12-06 18:42:38,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 84 states have (on average 2.4047619047619047) internal successors, (202), 84 states have internal predecessors, (202), 4 states have call successors, (5), 2 states have call predecessors, (5), 26 states have return successors, (52), 52 states have call predecessors, (52), 3 states have call successors, (52) [2021-12-06 18:42:38,504 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 321 transitions. [2021-12-06 18:42:38,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2021-12-06 18:42:38,506 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:42:38,506 INFO L514 BasicCegarLoop]: trace histogram [26, 26, 25, 24, 24, 24, 24, 24, 24, 23, 23, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:42:38,533 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2021-12-06 18:42:38,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-12-06 18:42:38,706 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-06 18:42:38,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:42:38,707 INFO L85 PathProgramCache]: Analyzing trace with hash -623622926, now seen corresponding path program 18 times [2021-12-06 18:42:38,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:42:38,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669503556] [2021-12-06 18:42:38,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:42:38,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:42:38,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:42:38,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:42:38,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:42:38,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:42:38,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:42:38,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 18:42:38,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:42:38,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:42:38,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:42:38,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:42:39,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:42:39,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:42:39,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:42:39,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:42:39,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:42:39,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:42:39,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:42:39,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:42:39,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:42:39,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:42:39,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:42:39,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:42:39,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:42:39,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:42:39,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:42:39,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:42:39,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:42:39,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:42:39,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:42:39,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:42:39,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:42:39,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:42:39,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:42:39,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:42:39,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:42:39,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:42:39,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:42:39,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:42:40,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:42:40,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:42:40,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:42:40,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:42:40,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:42:40,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:42:40,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:42:40,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:42:40,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:42:40,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:42:40,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:42:40,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:42:40,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:42:40,501 INFO L134 CoverageAnalysis]: Checked inductivity of 3208 backedges. 2 proven. 1749 refuted. 0 times theorem prover too weak. 1457 trivial. 0 not checked. [2021-12-06 18:42:40,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:42:40,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669503556] [2021-12-06 18:42:40,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669503556] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:42:40,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437811922] [2021-12-06 18:42:40,502 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 18:42:40,502 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:42:40,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:42:40,502 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:42:40,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-12-06 18:42:41,750 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s) [2021-12-06 18:42:41,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:42:41,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 621 conjuncts, 94 conjunts are in the unsatisfiable core [2021-12-06 18:42:41,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:42:44,470 INFO L134 CoverageAnalysis]: Checked inductivity of 3208 backedges. 323 proven. 1422 refuted. 0 times theorem prover too weak. 1463 trivial. 0 not checked. [2021-12-06 18:42:44,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:42:59,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437811922] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:42:59,884 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:42:59,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 51] total 81 [2021-12-06 18:42:59,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382384408] [2021-12-06 18:42:59,884 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:42:59,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2021-12-06 18:42:59,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:42:59,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-12-06 18:42:59,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=6708, Unknown=0, NotChecked=0, Total=6972 [2021-12-06 18:42:59,885 INFO L87 Difference]: Start difference. First operand 289 states and 321 transitions. Second operand has 82 states, 81 states have (on average 2.567901234567901) internal successors, (208), 80 states have internal predecessors, (208), 8 states have call successors, (10), 3 states have call predecessors, (10), 26 states have return successors, (50), 50 states have call predecessors, (50), 7 states have call successors, (50) [2021-12-06 18:43:13,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:43:13,110 INFO L93 Difference]: Finished difference Result 548 states and 584 transitions. [2021-12-06 18:43:13,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2021-12-06 18:43:13,110 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 81 states have (on average 2.567901234567901) internal successors, (208), 80 states have internal predecessors, (208), 8 states have call successors, (10), 3 states have call predecessors, (10), 26 states have return successors, (50), 50 states have call predecessors, (50), 7 states have call successors, (50) Word has length 278 [2021-12-06 18:43:13,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:43:13,112 INFO L225 Difference]: With dead ends: 548 [2021-12-06 18:43:13,112 INFO L226 Difference]: Without dead ends: 543 [2021-12-06 18:43:13,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 282 SyntacticMatches, 21 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11657 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=2038, Invalid=47914, Unknown=0, NotChecked=0, Total=49952 [2021-12-06 18:43:13,115 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 554 mSDsluCounter, 3140 mSDsCounter, 0 mSdLazyCounter, 15060 mSolverCounterSat, 495 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 3196 SdHoareTripleChecker+Invalid, 15555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 495 IncrementalHoareTripleChecker+Valid, 15060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2021-12-06 18:43:13,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [554 Valid, 3196 Invalid, 15555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [495 Valid, 15060 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2021-12-06 18:43:13,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2021-12-06 18:43:13,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 294. [2021-12-06 18:43:13,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 235 states have (on average 1.0212765957446808) internal successors, (240), 234 states have internal predecessors, (240), 6 states have call successors, (6), 4 states have call predecessors, (6), 52 states have return successors, (80), 55 states have call predecessors, (80), 5 states have call successors, (80) [2021-12-06 18:43:13,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 326 transitions. [2021-12-06 18:43:13,122 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 326 transitions. Word has length 278 [2021-12-06 18:43:13,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:43:13,122 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 326 transitions. [2021-12-06 18:43:13,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 81 states have (on average 2.567901234567901) internal successors, (208), 80 states have internal predecessors, (208), 8 states have call successors, (10), 3 states have call predecessors, (10), 26 states have return successors, (50), 50 states have call predecessors, (50), 7 states have call successors, (50) [2021-12-06 18:43:13,122 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 326 transitions. [2021-12-06 18:43:13,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2021-12-06 18:43:13,123 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:43:13,124 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 27, 27, 27, 27, 27, 27, 27, 26, 26, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:43:13,152 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2021-12-06 18:43:13,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-12-06 18:43:13,325 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-06 18:43:13,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:43:13,326 INFO L85 PathProgramCache]: Analyzing trace with hash -878178457, now seen corresponding path program 22 times [2021-12-06 18:43:13,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:43:13,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348096919] [2021-12-06 18:43:13,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:43:13,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:43:13,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:13,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 18:43:13,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:13,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:43:13,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:13,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:43:13,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:13,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:43:13,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:13,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:43:13,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:13,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:43:13,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:13,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:43:13,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:14,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:43:14,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:14,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:43:14,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:14,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:43:14,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:14,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:43:14,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:14,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:43:14,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:14,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:43:14,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:14,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:43:14,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:14,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:43:14,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:14,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:43:14,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:14,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:43:14,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:14,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:43:14,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:14,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:43:14,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:14,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:43:14,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:15,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:43:15,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:15,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:43:15,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:15,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:43:15,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:15,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:43:15,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:15,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:43:15,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:15,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:43:15,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:15,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:43:15,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:15,607 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 1940 refuted. 0 times theorem prover too weak. 1976 trivial. 0 not checked. [2021-12-06 18:43:15,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:43:15,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348096919] [2021-12-06 18:43:15,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348096919] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:43:15,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94686315] [2021-12-06 18:43:15,607 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 18:43:15,607 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:43:15,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:43:15,608 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:43:15,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-12-06 18:43:16,836 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 18:43:16,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:43:16,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 668 conjuncts, 110 conjunts are in the unsatisfiable core [2021-12-06 18:43:16,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:43:19,910 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 1940 refuted. 0 times theorem prover too weak. 1976 trivial. 0 not checked. [2021-12-06 18:43:19,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:43:44,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94686315] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:43:44,718 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:43:44,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 87 [2021-12-06 18:43:44,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581996025] [2021-12-06 18:43:44,719 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:43:44,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2021-12-06 18:43:44,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:43:44,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-12-06 18:43:44,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=7722, Unknown=0, NotChecked=0, Total=8010 [2021-12-06 18:43:44,720 INFO L87 Difference]: Start difference. First operand 294 states and 326 transitions. Second operand has 88 states, 87 states have (on average 2.4022988505747125) internal successors, (209), 87 states have internal predecessors, (209), 4 states have call successors, (4), 2 states have call predecessors, (4), 27 states have return successors, (54), 54 states have call predecessors, (54), 3 states have call successors, (54) [2021-12-06 18:43:53,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:43:53,614 INFO L93 Difference]: Finished difference Result 460 states and 497 transitions. [2021-12-06 18:43:53,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2021-12-06 18:43:53,614 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 87 states have (on average 2.4022988505747125) internal successors, (209), 87 states have internal predecessors, (209), 4 states have call successors, (4), 2 states have call predecessors, (4), 27 states have return successors, (54), 54 states have call predecessors, (54), 3 states have call successors, (54) Word has length 304 [2021-12-06 18:43:53,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:43:53,616 INFO L225 Difference]: With dead ends: 460 [2021-12-06 18:43:53,616 INFO L226 Difference]: Without dead ends: 459 [2021-12-06 18:43:53,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 503 GetRequests, 306 SyntacticMatches, 25 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5887 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=1042, Invalid=29060, Unknown=0, NotChecked=0, Total=30102 [2021-12-06 18:43:53,617 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 385 mSDsluCounter, 2372 mSDsCounter, 0 mSdLazyCounter, 10722 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 2412 SdHoareTripleChecker+Invalid, 10945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 10722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-12-06 18:43:53,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [440 Valid, 2412 Invalid, 10945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 10722 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2021-12-06 18:43:53,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2021-12-06 18:43:53,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 299. [2021-12-06 18:43:53,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 239 states have (on average 1.0209205020920502) internal successors, (244), 238 states have internal predecessors, (244), 6 states have call successors, (6), 4 states have call predecessors, (6), 53 states have return successors, (82), 56 states have call predecessors, (82), 5 states have call successors, (82) [2021-12-06 18:43:53,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 332 transitions. [2021-12-06 18:43:53,625 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 332 transitions. Word has length 304 [2021-12-06 18:43:53,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:43:53,625 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 332 transitions. [2021-12-06 18:43:53,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 87 states have (on average 2.4022988505747125) internal successors, (209), 87 states have internal predecessors, (209), 4 states have call successors, (4), 2 states have call predecessors, (4), 27 states have return successors, (54), 54 states have call predecessors, (54), 3 states have call successors, (54) [2021-12-06 18:43:53,625 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 332 transitions. [2021-12-06 18:43:53,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2021-12-06 18:43:53,626 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:43:53,626 INFO L514 BasicCegarLoop]: trace histogram [27, 27, 26, 25, 25, 25, 25, 25, 25, 24, 24, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:43:53,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2021-12-06 18:43:53,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-12-06 18:43:53,828 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-06 18:43:53,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:43:53,829 INFO L85 PathProgramCache]: Analyzing trace with hash -757301322, now seen corresponding path program 19 times [2021-12-06 18:43:53,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:43:53,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313994961] [2021-12-06 18:43:53,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:43:53,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:43:53,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:53,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:43:53,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:53,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:43:53,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:53,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 18:43:54,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:54,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:43:54,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:54,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:43:54,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:54,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:43:54,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:54,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:43:54,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:54,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:43:54,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:54,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:43:54,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:54,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:43:54,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:54,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:43:54,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:54,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:43:54,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:54,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:43:54,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:54,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:43:54,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:54,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:43:54,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:54,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:43:54,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:55,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:43:55,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:55,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:43:55,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:55,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:43:55,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:55,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:43:55,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:55,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:43:55,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:55,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:43:55,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:55,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:43:55,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:55,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:43:55,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:55,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:43:55,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:55,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:43:55,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:55,770 INFO L134 CoverageAnalysis]: Checked inductivity of 3479 backedges. 2 proven. 1885 refuted. 0 times theorem prover too weak. 1592 trivial. 0 not checked. [2021-12-06 18:43:55,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:43:55,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313994961] [2021-12-06 18:43:55,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313994961] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:43:55,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985929404] [2021-12-06 18:43:55,771 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 18:43:55,771 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:43:55,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:43:55,772 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:43:55,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-12-06 18:43:57,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:57,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 644 conjuncts, 102 conjunts are in the unsatisfiable core [2021-12-06 18:43:57,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:43:59,984 INFO L134 CoverageAnalysis]: Checked inductivity of 3479 backedges. 2 proven. 1885 refuted. 0 times theorem prover too weak. 1592 trivial. 0 not checked. [2021-12-06 18:43:59,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:44:32,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985929404] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:44:32,987 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:44:32,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 82 [2021-12-06 18:44:32,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182761332] [2021-12-06 18:44:32,987 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:44:32,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2021-12-06 18:44:32,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:44:32,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2021-12-06 18:44:32,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=397, Invalid=7259, Unknown=0, NotChecked=0, Total=7656 [2021-12-06 18:44:32,988 INFO L87 Difference]: Start difference. First operand 299 states and 332 transitions. Second operand has 83 states, 82 states have (on average 2.5121951219512195) internal successors, (206), 82 states have internal predecessors, (206), 7 states have call successors, (7), 2 states have call predecessors, (7), 26 states have return successors, (51), 50 states have call predecessors, (51), 6 states have call successors, (51) [2021-12-06 18:44:43,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:44:43,787 INFO L93 Difference]: Finished difference Result 562 states and 599 transitions. [2021-12-06 18:44:43,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-12-06 18:44:43,788 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 82 states have (on average 2.5121951219512195) internal successors, (206), 82 states have internal predecessors, (206), 7 states have call successors, (7), 2 states have call predecessors, (7), 26 states have return successors, (51), 50 states have call predecessors, (51), 6 states have call successors, (51) Word has length 289 [2021-12-06 18:44:43,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:44:43,790 INFO L225 Difference]: With dead ends: 562 [2021-12-06 18:44:43,790 INFO L226 Difference]: Without dead ends: 559 [2021-12-06 18:44:43,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 297 SyntacticMatches, 22 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6941 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=1706, Invalid=32334, Unknown=0, NotChecked=0, Total=34040 [2021-12-06 18:44:43,792 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 337 mSDsluCounter, 3252 mSDsCounter, 0 mSdLazyCounter, 14223 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 3310 SdHoareTripleChecker+Invalid, 14492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 14223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:44:43,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [337 Valid, 3310 Invalid, 14492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 14223 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2021-12-06 18:44:43,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2021-12-06 18:44:43,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 442. [2021-12-06 18:44:43,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 353 states have (on average 1.019830028328612) internal successors, (360), 352 states have internal predecessors, (360), 9 states have call successors, (9), 6 states have call predecessors, (9), 79 states have return successors, (109), 83 states have call predecessors, (109), 7 states have call successors, (109) [2021-12-06 18:44:43,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 478 transitions. [2021-12-06 18:44:43,801 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 478 transitions. Word has length 289 [2021-12-06 18:44:43,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:44:43,802 INFO L470 AbstractCegarLoop]: Abstraction has 442 states and 478 transitions. [2021-12-06 18:44:43,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 82 states have (on average 2.5121951219512195) internal successors, (206), 82 states have internal predecessors, (206), 7 states have call successors, (7), 2 states have call predecessors, (7), 26 states have return successors, (51), 50 states have call predecessors, (51), 6 states have call successors, (51) [2021-12-06 18:44:43,802 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 478 transitions. [2021-12-06 18:44:43,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2021-12-06 18:44:43,803 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:44:43,804 INFO L514 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 30, 30, 28, 28, 28, 27, 27, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:44:43,834 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2021-12-06 18:44:44,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:44:44,004 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-06 18:44:44,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:44:44,004 INFO L85 PathProgramCache]: Analyzing trace with hash -315318973, now seen corresponding path program 23 times [2021-12-06 18:44:44,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:44:44,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388056838] [2021-12-06 18:44:44,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:44:44,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:44:44,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:44:44,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 18:44:44,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:44:44,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:44:44,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:44:44,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:44:44,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:44:44,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:44:44,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:44:44,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:44:44,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:44:44,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:44:44,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:44:44,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:44:44,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:44:44,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:44:44,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:44:44,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:44:44,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:44:44,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:44:44,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:44:44,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:44:45,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:44:45,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:44:45,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:44:45,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:44:45,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:44:45,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:44:45,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:44:45,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:44:45,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:44:45,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:44:45,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:44:45,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:44:45,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:44:45,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:44:45,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:44:45,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:44:45,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:44:45,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:44:45,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:44:45,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:44:45,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:44:45,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:44:45,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:44:45,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:44:45,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:44:46,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:44:46,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:44:46,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:44:46,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:44:46,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:44:46,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:44:46,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:44:46,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:44:46,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 18:44:46,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:44:46,403 INFO L134 CoverageAnalysis]: Checked inductivity of 4563 backedges. 0 proven. 2412 refuted. 0 times theorem prover too weak. 2151 trivial. 0 not checked. [2021-12-06 18:44:46,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:44:46,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388056838] [2021-12-06 18:44:46,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388056838] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:44:46,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484463012] [2021-12-06 18:44:46,404 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 18:44:46,404 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:44:46,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:44:46,405 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:44:46,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76abc53-cb7e-4301-ab7a-c7e9fcfcd467/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-12-06 18:44:47,891 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2021-12-06 18:44:47,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:44:47,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 719 conjuncts, 118 conjunts are in the unsatisfiable core [2021-12-06 18:44:47,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:44:51,446 INFO L134 CoverageAnalysis]: Checked inductivity of 4563 backedges. 0 proven. 2412 refuted. 0 times theorem prover too weak. 2151 trivial. 0 not checked. [2021-12-06 18:44:51,446 INFO L328 TraceCheckSpWp]: Computing backward predicates...