./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/psyco/psyco_abp_1-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/psyco/psyco_abp_1-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0 --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 167b835a28653099821c6834c1cc6b8e30303efac27d569b21e43e89592d7586 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 14:25:24,462 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 14:25:24,464 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 14:25:24,522 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 14:25:24,523 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 14:25:24,528 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 14:25:24,530 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 14:25:24,534 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 14:25:24,537 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 14:25:24,548 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 14:25:24,550 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 14:25:24,551 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 14:25:24,552 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 14:25:24,555 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 14:25:24,557 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 14:25:24,562 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 14:25:24,564 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 14:25:24,565 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 14:25:24,568 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 14:25:24,577 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 14:25:24,579 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 14:25:24,581 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 14:25:24,584 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 14:25:24,585 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 14:25:24,589 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 14:25:24,590 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 14:25:24,590 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 14:25:24,592 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 14:25:24,593 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 14:25:24,594 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 14:25:24,595 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 14:25:24,596 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 14:25:24,597 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 14:25:24,599 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 14:25:24,600 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 14:25:24,601 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 14:25:24,601 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 14:25:24,602 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 14:25:24,602 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 14:25:24,603 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 14:25:24,603 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 14:25:24,604 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-11-22 14:25:24,649 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 14:25:24,650 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 14:25:24,650 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 14:25:24,651 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 14:25:24,658 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 14:25:24,658 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 14:25:24,659 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 14:25:24,659 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 14:25:24,659 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 14:25:24,659 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-22 14:25:24,661 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 14:25:24,661 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 14:25:24,661 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 14:25:24,661 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 14:25:24,661 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 14:25:24,662 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 14:25:24,662 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-22 14:25:24,662 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 14:25:24,662 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 14:25:24,663 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 14:25:24,663 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 14:25:24,663 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 14:25:24,663 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 14:25:24,663 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 14:25:24,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:25:24,664 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 14:25:24,664 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 14:25:24,664 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 14:25:24,665 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 14:25:24,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 14:25:24,666 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 14:25:24,667 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 14:25:24,667 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_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 167b835a28653099821c6834c1cc6b8e30303efac27d569b21e43e89592d7586 [2021-11-22 14:25:24,922 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 14:25:24,951 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 14:25:24,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 14:25:24,955 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 14:25:24,956 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 14:25:24,958 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/psyco/psyco_abp_1-2.c [2021-11-22 14:25:25,023 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/data/2b4cb0778/c7b6be73540946f4a5ddc7b9eb830c46/FLAG6277d9085 [2021-11-22 14:25:25,542 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 14:25:25,543 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/sv-benchmarks/c/psyco/psyco_abp_1-2.c [2021-11-22 14:25:25,556 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/data/2b4cb0778/c7b6be73540946f4a5ddc7b9eb830c46/FLAG6277d9085 [2021-11-22 14:25:25,875 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/data/2b4cb0778/c7b6be73540946f4a5ddc7b9eb830c46 [2021-11-22 14:25:25,879 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 14:25:25,880 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 14:25:25,886 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 14:25:25,886 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 14:25:25,891 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 14:25:25,892 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:25:25" (1/1) ... [2021-11-22 14:25:25,894 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7acf4a85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:25:25, skipping insertion in model container [2021-11-22 14:25:25,895 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:25:25" (1/1) ... [2021-11-22 14:25:25,901 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 14:25:25,957 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 14:25:26,260 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_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/sv-benchmarks/c/psyco/psyco_abp_1-2.c[24706,24719] [2021-11-22 14:25:26,266 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:25:26,274 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 14:25:26,396 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_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/sv-benchmarks/c/psyco/psyco_abp_1-2.c[24706,24719] [2021-11-22 14:25:26,399 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:25:26,436 INFO L208 MainTranslator]: Completed translation [2021-11-22 14:25:26,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:25:26 WrapperNode [2021-11-22 14:25:26,438 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 14:25:26,439 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 14:25:26,439 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 14:25:26,440 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 14:25:26,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:25:26" (1/1) ... [2021-11-22 14:25:26,471 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:25:26" (1/1) ... [2021-11-22 14:25:26,536 INFO L137 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 467 [2021-11-22 14:25:26,536 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 14:25:26,537 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 14:25:26,537 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 14:25:26,537 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 14:25:26,546 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:25:26" (1/1) ... [2021-11-22 14:25:26,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:25:26" (1/1) ... [2021-11-22 14:25:26,551 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:25:26" (1/1) ... [2021-11-22 14:25:26,552 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:25:26" (1/1) ... [2021-11-22 14:25:26,569 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:25:26" (1/1) ... [2021-11-22 14:25:26,577 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:25:26" (1/1) ... [2021-11-22 14:25:26,582 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:25:26" (1/1) ... [2021-11-22 14:25:26,588 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 14:25:26,589 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 14:25:26,589 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 14:25:26,589 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 14:25:26,590 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:25:26" (1/1) ... [2021-11-22 14:25:26,614 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:25:26,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:25:26,653 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 14:25:26,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 14:25:26,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 14:25:26,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 14:25:26,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 14:25:26,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 14:25:26,811 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 14:25:26,813 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 14:25:27,664 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 14:25:27,673 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 14:25:27,674 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-22 14:25:27,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:25:27 BoogieIcfgContainer [2021-11-22 14:25:27,676 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 14:25:27,678 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 14:25:27,678 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 14:25:27,682 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 14:25:27,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:25:25" (1/3) ... [2021-11-22 14:25:27,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12091e33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:25:27, skipping insertion in model container [2021-11-22 14:25:27,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:25:26" (2/3) ... [2021-11-22 14:25:27,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12091e33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:25:27, skipping insertion in model container [2021-11-22 14:25:27,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:25:27" (3/3) ... [2021-11-22 14:25:27,685 INFO L111 eAbstractionObserver]: Analyzing ICFG psyco_abp_1-2.c [2021-11-22 14:25:27,696 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 14:25:27,696 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2021-11-22 14:25:27,758 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 14:25:27,765 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 [2021-11-22 14:25:27,765 INFO L340 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2021-11-22 14:25:27,786 INFO L276 IsEmpty]: Start isEmpty. Operand has 194 states, 151 states have (on average 1.9602649006622517) internal successors, (296), 193 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:25:27,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-22 14:25:27,792 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:25:27,792 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:25:27,793 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2021-11-22 14:25:27,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:25:27,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1422697969, now seen corresponding path program 1 times [2021-11-22 14:25:27,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:25:27,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459178381] [2021-11-22 14:25:27,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:25:27,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:25:27,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:25:28,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:25:28,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:25:28,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459178381] [2021-11-22 14:25:28,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459178381] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:25:28,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:25:28,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:25:28,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265216530] [2021-11-22 14:25:28,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:25:28,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:25:28,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:25:28,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:25:28,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:25:28,083 INFO L87 Difference]: Start difference. First operand has 194 states, 151 states have (on average 1.9602649006622517) internal successors, (296), 193 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:25:28,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:25:28,284 INFO L93 Difference]: Finished difference Result 389 states and 596 transitions. [2021-11-22 14:25:28,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:25:28,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-22 14:25:28,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:25:28,302 INFO L225 Difference]: With dead ends: 389 [2021-11-22 14:25:28,303 INFO L226 Difference]: Without dead ends: 166 [2021-11-22 14:25:28,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:25:28,310 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 4 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:25:28,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 534 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:25:28,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-11-22 14:25:28,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2021-11-22 14:25:28,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 124 states have (on average 1.685483870967742) internal successors, (209), 165 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:25:28,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 209 transitions. [2021-11-22 14:25:28,360 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 209 transitions. Word has length 10 [2021-11-22 14:25:28,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:25:28,361 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 209 transitions. [2021-11-22 14:25:28,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:25:28,361 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 209 transitions. [2021-11-22 14:25:28,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-22 14:25:28,362 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:25:28,363 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:25:28,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 14:25:28,363 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2021-11-22 14:25:28,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:25:28,364 INFO L85 PathProgramCache]: Analyzing trace with hash 658032322, now seen corresponding path program 1 times [2021-11-22 14:25:28,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:25:28,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039840974] [2021-11-22 14:25:28,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:25:28,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:25:28,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:25:28,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:25:28,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:25:28,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039840974] [2021-11-22 14:25:28,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039840974] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:25:28,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:25:28,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 14:25:28,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815269365] [2021-11-22 14:25:28,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:25:28,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:25:28,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:25:28,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:25:28,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:25:28,478 INFO L87 Difference]: Start difference. First operand 166 states and 209 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:25:28,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:25:28,627 INFO L93 Difference]: Finished difference Result 321 states and 407 transitions. [2021-11-22 14:25:28,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:25:28,627 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-22 14:25:28,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:25:28,630 INFO L225 Difference]: With dead ends: 321 [2021-11-22 14:25:28,631 INFO L226 Difference]: Without dead ends: 261 [2021-11-22 14:25:28,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:25:28,633 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 151 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:25:28,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 326 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:25:28,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-11-22 14:25:28,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 252. [2021-11-22 14:25:28,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 210 states have (on average 1.6238095238095238) internal successors, (341), 251 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:25:28,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 341 transitions. [2021-11-22 14:25:28,666 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 341 transitions. Word has length 15 [2021-11-22 14:25:28,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:25:28,668 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 341 transitions. [2021-11-22 14:25:28,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:25:28,668 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 341 transitions. [2021-11-22 14:25:28,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-22 14:25:28,670 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:25:28,670 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:25:28,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 14:25:28,672 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2021-11-22 14:25:28,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:25:28,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1008871492, now seen corresponding path program 1 times [2021-11-22 14:25:28,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:25:28,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047300851] [2021-11-22 14:25:28,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:25:28,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:25:28,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:25:28,750 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:25:28,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:25:28,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047300851] [2021-11-22 14:25:28,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047300851] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:25:28,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:25:28,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 14:25:28,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936029699] [2021-11-22 14:25:28,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:25:28,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:25:28,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:25:28,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:25:28,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:25:28,753 INFO L87 Difference]: Start difference. First operand 252 states and 341 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:25:28,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:25:28,823 INFO L93 Difference]: Finished difference Result 355 states and 487 transitions. [2021-11-22 14:25:28,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:25:28,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-22 14:25:28,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:25:28,827 INFO L225 Difference]: With dead ends: 355 [2021-11-22 14:25:28,827 INFO L226 Difference]: Without dead ends: 347 [2021-11-22 14:25:28,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:25:28,838 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 123 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:25:28,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 381 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:25:28,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-11-22 14:25:28,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 342. [2021-11-22 14:25:28,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 300 states have (on average 1.5766666666666667) internal successors, (473), 341 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:25:28,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 473 transitions. [2021-11-22 14:25:28,878 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 473 transitions. Word has length 17 [2021-11-22 14:25:28,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:25:28,879 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 473 transitions. [2021-11-22 14:25:28,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:25:28,879 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 473 transitions. [2021-11-22 14:25:28,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-22 14:25:28,881 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:25:28,881 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:25:28,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 14:25:28,881 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2021-11-22 14:25:28,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:25:28,882 INFO L85 PathProgramCache]: Analyzing trace with hash 166348385, now seen corresponding path program 1 times [2021-11-22 14:25:28,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:25:28,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955406798] [2021-11-22 14:25:28,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:25:28,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:25:28,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:25:28,953 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 14:25:28,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:25:28,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955406798] [2021-11-22 14:25:28,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955406798] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:25:28,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:25:28,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:25:28,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506434415] [2021-11-22 14:25:28,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:25:28,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:25:28,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:25:28,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:25:28,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:25:28,956 INFO L87 Difference]: Start difference. First operand 342 states and 473 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:25:28,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:25:28,997 INFO L93 Difference]: Finished difference Result 696 states and 970 transitions. [2021-11-22 14:25:28,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:25:28,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-22 14:25:28,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:25:29,002 INFO L225 Difference]: With dead ends: 696 [2021-11-22 14:25:29,002 INFO L226 Difference]: Without dead ends: 357 [2021-11-22 14:25:29,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:25:29,012 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 39 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:25:29,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 354 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:25:29,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2021-11-22 14:25:29,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2021-11-22 14:25:29,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 315 states have (on average 1.5492063492063493) internal successors, (488), 356 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:25:29,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 488 transitions. [2021-11-22 14:25:29,043 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 488 transitions. Word has length 25 [2021-11-22 14:25:29,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:25:29,044 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 488 transitions. [2021-11-22 14:25:29,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:25:29,044 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 488 transitions. [2021-11-22 14:25:29,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-22 14:25:29,053 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:25:29,054 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:25:29,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 14:25:29,054 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2021-11-22 14:25:29,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:25:29,056 INFO L85 PathProgramCache]: Analyzing trace with hash 110617732, now seen corresponding path program 1 times [2021-11-22 14:25:29,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:25:29,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185068604] [2021-11-22 14:25:29,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:25:29,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:25:29,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:25:29,172 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:25:29,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:25:29,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185068604] [2021-11-22 14:25:29,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185068604] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:25:29,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525196396] [2021-11-22 14:25:29,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:25:29,174 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:25:29,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:25:29,176 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:25:29,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 14:25:29,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:25:29,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 14:25:29,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:25:29,390 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:25:29,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:25:29,502 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:25:29,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525196396] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:25:29,502 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 14:25:29,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2021-11-22 14:25:29,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81034844] [2021-11-22 14:25:29,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 14:25:29,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 14:25:29,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:25:29,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 14:25:29,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-22 14:25:29,505 INFO L87 Difference]: Start difference. First operand 357 states and 488 transitions. Second operand has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:25:29,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:25:29,779 INFO L93 Difference]: Finished difference Result 636 states and 912 transitions. [2021-11-22 14:25:29,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 14:25:29,779 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-22 14:25:29,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:25:29,783 INFO L225 Difference]: With dead ends: 636 [2021-11-22 14:25:29,783 INFO L226 Difference]: Without dead ends: 619 [2021-11-22 14:25:29,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-22 14:25:29,785 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 743 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 14:25:29,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [743 Valid, 728 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 14:25:29,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2021-11-22 14:25:29,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 435. [2021-11-22 14:25:29,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 408 states have (on average 1.5465686274509804) internal successors, (631), 434 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:25:29,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 631 transitions. [2021-11-22 14:25:29,804 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 631 transitions. Word has length 28 [2021-11-22 14:25:29,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:25:29,804 INFO L470 AbstractCegarLoop]: Abstraction has 435 states and 631 transitions. [2021-11-22 14:25:29,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:25:29,805 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 631 transitions. [2021-11-22 14:25:29,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-22 14:25:29,806 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:25:29,806 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:25:29,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-22 14:25:30,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:25:30,007 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2021-11-22 14:25:30,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:25:30,008 INFO L85 PathProgramCache]: Analyzing trace with hash -865818952, now seen corresponding path program 1 times [2021-11-22 14:25:30,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:25:30,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860280511] [2021-11-22 14:25:30,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:25:30,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:25:30,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:25:30,054 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-22 14:25:30,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:25:30,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860280511] [2021-11-22 14:25:30,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860280511] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:25:30,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:25:30,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:25:30,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143803827] [2021-11-22 14:25:30,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:25:30,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:25:30,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:25:30,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:25:30,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:25:30,056 INFO L87 Difference]: Start difference. First operand 435 states and 631 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:25:30,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:25:30,081 INFO L93 Difference]: Finished difference Result 871 states and 1263 transitions. [2021-11-22 14:25:30,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:25:30,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-11-22 14:25:30,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:25:30,084 INFO L225 Difference]: With dead ends: 871 [2021-11-22 14:25:30,085 INFO L226 Difference]: Without dead ends: 435 [2021-11-22 14:25:30,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:25:30,088 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 0 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:25:30,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 376 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:25:30,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2021-11-22 14:25:30,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 435. [2021-11-22 14:25:30,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 408 states have (on average 1.536764705882353) internal successors, (627), 434 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:25:30,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 627 transitions. [2021-11-22 14:25:30,103 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 627 transitions. Word has length 29 [2021-11-22 14:25:30,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:25:30,104 INFO L470 AbstractCegarLoop]: Abstraction has 435 states and 627 transitions. [2021-11-22 14:25:30,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:25:30,104 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 627 transitions. [2021-11-22 14:25:30,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-22 14:25:30,105 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:25:30,106 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:25:30,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 14:25:30,106 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2021-11-22 14:25:30,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:25:30,108 INFO L85 PathProgramCache]: Analyzing trace with hash -865817286, now seen corresponding path program 1 times [2021-11-22 14:25:30,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:25:30,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570129216] [2021-11-22 14:25:30,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:25:30,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:25:30,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:25:30,217 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:25:30,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:25:30,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570129216] [2021-11-22 14:25:30,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570129216] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:25:30,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815891646] [2021-11-22 14:25:30,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:25:30,218 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:25:30,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:25:30,223 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:25:30,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-22 14:25:30,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:25:30,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 14:25:30,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:25:30,367 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:25:30,368 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 14:25:30,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815891646] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:25:30,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 14:25:30,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2021-11-22 14:25:30,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745795524] [2021-11-22 14:25:30,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:25:30,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 14:25:30,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:25:30,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 14:25:30,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:25:30,370 INFO L87 Difference]: Start difference. First operand 435 states and 627 transitions. Second operand has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:25:30,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:25:30,445 INFO L93 Difference]: Finished difference Result 444 states and 633 transitions. [2021-11-22 14:25:30,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 14:25:30,445 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-11-22 14:25:30,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:25:30,450 INFO L225 Difference]: With dead ends: 444 [2021-11-22 14:25:30,450 INFO L226 Difference]: Without dead ends: 401 [2021-11-22 14:25:30,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:25:30,452 INFO L933 BasicCegarLoop]: 267 mSDtfsCounter, 315 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:25:30,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 390 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:25:30,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2021-11-22 14:25:30,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 392. [2021-11-22 14:25:30,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 382 states have (on average 1.4895287958115184) internal successors, (569), 391 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:25:30,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 569 transitions. [2021-11-22 14:25:30,467 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 569 transitions. Word has length 29 [2021-11-22 14:25:30,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:25:30,468 INFO L470 AbstractCegarLoop]: Abstraction has 392 states and 569 transitions. [2021-11-22 14:25:30,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:25:30,468 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 569 transitions. [2021-11-22 14:25:30,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-22 14:25:30,471 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:25:30,472 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:25:30,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-22 14:25:30,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-22 14:25:30,695 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2021-11-22 14:25:30,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:25:30,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1173253948, now seen corresponding path program 1 times [2021-11-22 14:25:30,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:25:30,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785309800] [2021-11-22 14:25:30,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:25:30,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:25:30,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:25:30,741 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:25:30,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:25:30,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785309800] [2021-11-22 14:25:30,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785309800] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:25:30,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697713274] [2021-11-22 14:25:30,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:25:30,742 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:25:30,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:25:30,742 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:25:30,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-22 14:25:30,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:25:30,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 14:25:30,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:25:30,886 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:25:30,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:25:30,968 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:25:30,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697713274] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:25:30,969 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 14:25:30,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2021-11-22 14:25:30,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138628674] [2021-11-22 14:25:30,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 14:25:30,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 14:25:30,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:25:30,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 14:25:30,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 14:25:30,972 INFO L87 Difference]: Start difference. First operand 392 states and 569 transitions. Second operand has 7 states, 6 states have (on average 11.0) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:25:31,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:25:31,042 INFO L93 Difference]: Finished difference Result 397 states and 575 transitions. [2021-11-22 14:25:31,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 14:25:31,043 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.0) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-22 14:25:31,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:25:31,045 INFO L225 Difference]: With dead ends: 397 [2021-11-22 14:25:31,045 INFO L226 Difference]: Without dead ends: 389 [2021-11-22 14:25:31,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-11-22 14:25:31,047 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 826 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:25:31,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [826 Valid, 257 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:25:31,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2021-11-22 14:25:31,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 289. [2021-11-22 14:25:31,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 287 states have (on average 1.4390243902439024) internal successors, (413), 288 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:25:31,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 413 transitions. [2021-11-22 14:25:31,059 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 413 transitions. Word has length 31 [2021-11-22 14:25:31,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:25:31,059 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 413 transitions. [2021-11-22 14:25:31,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.0) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:25:31,060 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 413 transitions. [2021-11-22 14:25:31,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-22 14:25:31,060 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:25:31,061 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:25:31,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-22 14:25:31,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:25:31,275 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2021-11-22 14:25:31,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:25:31,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1024418114, now seen corresponding path program 1 times [2021-11-22 14:25:31,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:25:31,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508721286] [2021-11-22 14:25:31,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:25:31,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:25:31,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:25:31,305 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-22 14:25:31,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:25:31,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508721286] [2021-11-22 14:25:31,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508721286] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:25:31,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:25:31,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:25:31,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324823892] [2021-11-22 14:25:31,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:25:31,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:25:31,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:25:31,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:25:31,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:25:31,308 INFO L87 Difference]: Start difference. First operand 289 states and 413 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:25:31,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:25:31,334 INFO L93 Difference]: Finished difference Result 506 states and 726 transitions. [2021-11-22 14:25:31,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:25:31,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-11-22 14:25:31,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:25:31,336 INFO L225 Difference]: With dead ends: 506 [2021-11-22 14:25:31,336 INFO L226 Difference]: Without dead ends: 220 [2021-11-22 14:25:31,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:25:31,337 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 22 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:25:31,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 238 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:25:31,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-11-22 14:25:31,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2021-11-22 14:25:31,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 218 states have (on average 1.4220183486238531) internal successors, (310), 219 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:25:31,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 310 transitions. [2021-11-22 14:25:31,345 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 310 transitions. Word has length 47 [2021-11-22 14:25:31,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:25:31,345 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 310 transitions. [2021-11-22 14:25:31,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:25:31,345 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 310 transitions. [2021-11-22 14:25:31,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-22 14:25:31,346 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:25:31,346 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:25:31,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-22 14:25:31,347 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2021-11-22 14:25:31,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:25:31,347 INFO L85 PathProgramCache]: Analyzing trace with hash 983432675, now seen corresponding path program 1 times [2021-11-22 14:25:31,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:25:31,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465760829] [2021-11-22 14:25:31,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:25:31,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:25:31,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:25:31,413 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-22 14:25:31,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:25:31,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465760829] [2021-11-22 14:25:31,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465760829] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:25:31,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:25:31,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:25:31,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949032869] [2021-11-22 14:25:31,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:25:31,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:25:31,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:25:31,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:25:31,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:25:31,415 INFO L87 Difference]: Start difference. First operand 220 states and 310 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:25:31,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:25:31,447 INFO L93 Difference]: Finished difference Result 453 states and 645 transitions. [2021-11-22 14:25:31,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:25:31,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-22 14:25:31,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:25:31,449 INFO L225 Difference]: With dead ends: 453 [2021-11-22 14:25:31,449 INFO L226 Difference]: Without dead ends: 236 [2021-11-22 14:25:31,450 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:25:31,450 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 30 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:25:31,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 234 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:25:31,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-11-22 14:25:31,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2021-11-22 14:25:31,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 234 states have (on average 1.4017094017094016) internal successors, (328), 235 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:25:31,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 328 transitions. [2021-11-22 14:25:31,459 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 328 transitions. Word has length 55 [2021-11-22 14:25:31,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:25:31,460 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 328 transitions. [2021-11-22 14:25:31,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:25:31,460 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 328 transitions. [2021-11-22 14:25:31,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-22 14:25:31,461 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:25:31,461 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:25:31,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-22 14:25:31,461 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2021-11-22 14:25:31,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:25:31,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1592888312, now seen corresponding path program 1 times [2021-11-22 14:25:31,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:25:31,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985366553] [2021-11-22 14:25:31,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:25:31,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:25:31,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:25:31,515 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-22 14:25:31,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:25:31,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985366553] [2021-11-22 14:25:31,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985366553] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:25:31,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:25:31,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:25:31,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908645514] [2021-11-22 14:25:31,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:25:31,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:25:31,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:25:31,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:25:31,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:25:31,517 INFO L87 Difference]: Start difference. First operand 236 states and 328 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:25:31,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:25:31,544 INFO L93 Difference]: Finished difference Result 445 states and 617 transitions. [2021-11-22 14:25:31,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:25:31,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-22 14:25:31,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:25:31,547 INFO L225 Difference]: With dead ends: 445 [2021-11-22 14:25:31,547 INFO L226 Difference]: Without dead ends: 212 [2021-11-22 14:25:31,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:25:31,548 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 55 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:25:31,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 171 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:25:31,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-11-22 14:25:31,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2021-11-22 14:25:31,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 210 states have (on average 1.3523809523809525) internal successors, (284), 211 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:25:31,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 284 transitions. [2021-11-22 14:25:31,556 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 284 transitions. Word has length 63 [2021-11-22 14:25:31,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:25:31,556 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 284 transitions. [2021-11-22 14:25:31,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:25:31,556 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 284 transitions. [2021-11-22 14:25:31,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-22 14:25:31,557 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:25:31,558 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:25:31,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-22 14:25:31,558 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2021-11-22 14:25:31,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:25:31,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1013294547, now seen corresponding path program 1 times [2021-11-22 14:25:31,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:25:31,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940839285] [2021-11-22 14:25:31,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:25:31,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:25:31,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:25:31,616 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-22 14:25:31,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:25:31,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940839285] [2021-11-22 14:25:31,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940839285] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:25:31,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:25:31,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:25:31,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311499141] [2021-11-22 14:25:31,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:25:31,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:25:31,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:25:31,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:25:31,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:25:31,618 INFO L87 Difference]: Start difference. First operand 212 states and 284 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:25:31,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:25:31,629 INFO L93 Difference]: Finished difference Result 329 states and 440 transitions. [2021-11-22 14:25:31,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:25:31,629 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-22 14:25:31,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:25:31,631 INFO L225 Difference]: With dead ends: 329 [2021-11-22 14:25:31,631 INFO L226 Difference]: Without dead ends: 212 [2021-11-22 14:25:31,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:25:31,632 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 0 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:25:31,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 234 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:25:31,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-11-22 14:25:31,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2021-11-22 14:25:31,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 210 states have (on average 1.3428571428571427) internal successors, (282), 211 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:25:31,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 282 transitions. [2021-11-22 14:25:31,641 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 282 transitions. Word has length 73 [2021-11-22 14:25:31,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:25:31,641 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 282 transitions. [2021-11-22 14:25:31,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:25:31,641 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 282 transitions. [2021-11-22 14:25:31,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-22 14:25:31,642 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:25:31,642 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:25:31,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-22 14:25:31,643 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2021-11-22 14:25:31,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:25:31,643 INFO L85 PathProgramCache]: Analyzing trace with hash -504021519, now seen corresponding path program 1 times [2021-11-22 14:25:31,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:25:31,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541698718] [2021-11-22 14:25:31,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:25:31,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:25:31,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:25:31,726 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 10 proven. 33 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-22 14:25:31,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:25:31,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541698718] [2021-11-22 14:25:31,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541698718] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:25:31,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071639832] [2021-11-22 14:25:31,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:25:31,727 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:25:31,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:25:31,728 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:25:31,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-22 14:25:31,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:25:31,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-22 14:25:31,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:25:32,026 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 10 proven. 33 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-22 14:25:32,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:25:32,187 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 10 proven. 33 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-22 14:25:32,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071639832] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:25:32,188 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 14:25:32,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2021-11-22 14:25:32,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140116008] [2021-11-22 14:25:32,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 14:25:32,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 14:25:32,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:25:32,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 14:25:32,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-11-22 14:25:32,193 INFO L87 Difference]: Start difference. First operand 212 states and 282 transitions. Second operand has 9 states, 8 states have (on average 17.5) internal successors, (140), 9 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:25:32,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:25:32,322 INFO L93 Difference]: Finished difference Result 590 states and 790 transitions. [2021-11-22 14:25:32,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-22 14:25:32,323 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 17.5) internal successors, (140), 9 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-22 14:25:32,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:25:32,327 INFO L225 Difference]: With dead ends: 590 [2021-11-22 14:25:32,327 INFO L226 Difference]: Without dead ends: 588 [2021-11-22 14:25:32,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-11-22 14:25:32,328 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 962 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 962 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:25:32,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [962 Valid, 790 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:25:32,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2021-11-22 14:25:32,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 588. [2021-11-22 14:25:32,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 586 states have (on average 1.3344709897610922) internal successors, (782), 587 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:25:32,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 782 transitions. [2021-11-22 14:25:32,350 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 782 transitions. Word has length 75 [2021-11-22 14:25:32,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:25:32,351 INFO L470 AbstractCegarLoop]: Abstraction has 588 states and 782 transitions. [2021-11-22 14:25:32,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 17.5) internal successors, (140), 9 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:25:32,351 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 782 transitions. [2021-11-22 14:25:32,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-22 14:25:32,359 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:25:32,360 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 9, 9, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:25:32,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-22 14:25:32,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-22 14:25:32,575 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2021-11-22 14:25:32,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:25:32,575 INFO L85 PathProgramCache]: Analyzing trace with hash -550120753, now seen corresponding path program 2 times [2021-11-22 14:25:32,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:25:32,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517510823] [2021-11-22 14:25:32,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:25:32,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:25:32,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:25:32,814 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 26 proven. 429 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-22 14:25:32,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:25:32,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517510823] [2021-11-22 14:25:32,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517510823] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:25:32,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912933825] [2021-11-22 14:25:32,815 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 14:25:32,815 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:25:32,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:25:32,816 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:25:32,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-22 14:25:33,011 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-22 14:25:33,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 14:25:33,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 989 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-22 14:25:33,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:25:33,420 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 26 proven. 429 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-22 14:25:33,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:25:33,953 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 26 proven. 429 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-22 14:25:33,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912933825] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:25:33,954 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 14:25:33,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2021-11-22 14:25:33,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713656477] [2021-11-22 14:25:33,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 14:25:33,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-22 14:25:33,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:25:33,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-22 14:25:33,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-11-22 14:25:33,957 INFO L87 Difference]: Start difference. First operand 588 states and 782 transitions. Second operand has 17 states, 16 states have (on average 22.25) internal successors, (356), 17 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:25:34,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:25:34,311 INFO L93 Difference]: Finished difference Result 1342 states and 1798 transitions. [2021-11-22 14:25:34,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-22 14:25:34,312 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 22.25) internal successors, (356), 17 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2021-11-22 14:25:34,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:25:34,320 INFO L225 Difference]: With dead ends: 1342 [2021-11-22 14:25:34,320 INFO L226 Difference]: Without dead ends: 1340 [2021-11-22 14:25:34,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 387 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-11-22 14:25:34,321 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 2517 mSDsluCounter, 1374 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2517 SdHoareTripleChecker+Valid, 1481 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 14:25:34,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2517 Valid, 1481 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 14:25:34,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1340 states. [2021-11-22 14:25:34,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1340 to 1340. [2021-11-22 14:25:34,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1340 states, 1338 states have (on average 1.3318385650224216) internal successors, (1782), 1339 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:25:34,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 1782 transitions. [2021-11-22 14:25:34,362 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 1782 transitions. Word has length 195 [2021-11-22 14:25:34,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:25:34,362 INFO L470 AbstractCegarLoop]: Abstraction has 1340 states and 1782 transitions. [2021-11-22 14:25:34,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 22.25) internal successors, (356), 17 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:25:34,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 1782 transitions. [2021-11-22 14:25:34,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2021-11-22 14:25:34,373 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:25:34,373 INFO L514 BasicCegarLoop]: trace histogram [30, 29, 21, 21, 14, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:25:34,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-22 14:25:34,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-22 14:25:34,587 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2021-11-22 14:25:34,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:25:34,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1799263883, now seen corresponding path program 3 times [2021-11-22 14:25:34,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:25:34,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521566201] [2021-11-22 14:25:34,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:25:34,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:25:34,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:25:35,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2655 backedges. 58 proven. 2541 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-22 14:25:35,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:25:35,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521566201] [2021-11-22 14:25:35,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521566201] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:25:35,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652459427] [2021-11-22 14:25:35,211 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-22 14:25:35,211 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:25:35,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:25:35,224 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:25:35,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-22 14:25:35,361 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-22 14:25:35,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 14:25:35,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-22 14:25:35,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:25:35,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2655 backedges. 349 proven. 0 refuted. 0 times theorem prover too weak. 2306 trivial. 0 not checked. [2021-11-22 14:25:35,977 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 14:25:35,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652459427] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:25:35,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 14:25:35,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 20 [2021-11-22 14:25:35,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609297362] [2021-11-22 14:25:35,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:25:35,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 14:25:35,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:25:35,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 14:25:35,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=241, Unknown=0, NotChecked=0, Total=420 [2021-11-22 14:25:35,980 INFO L87 Difference]: Start difference. First operand 1340 states and 1782 transitions. Second operand has 6 states, 5 states have (on average 17.0) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:25:36,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:25:36,095 INFO L93 Difference]: Finished difference Result 1368 states and 1810 transitions. [2021-11-22 14:25:36,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 14:25:36,096 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.0) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 435 [2021-11-22 14:25:36,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:25:36,105 INFO L225 Difference]: With dead ends: 1368 [2021-11-22 14:25:36,105 INFO L226 Difference]: Without dead ends: 1367 [2021-11-22 14:25:36,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 445 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=185, Invalid=277, Unknown=0, NotChecked=0, Total=462 [2021-11-22 14:25:36,109 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 147 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:25:36,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 371 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:25:36,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1367 states. [2021-11-22 14:25:36,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1367 to 1291. [2021-11-22 14:25:36,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1291 states, 1290 states have (on average 1.331782945736434) internal successors, (1718), 1290 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:25:36,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1291 states to 1291 states and 1718 transitions. [2021-11-22 14:25:36,181 INFO L78 Accepts]: Start accepts. Automaton has 1291 states and 1718 transitions. Word has length 435 [2021-11-22 14:25:36,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:25:36,182 INFO L470 AbstractCegarLoop]: Abstraction has 1291 states and 1718 transitions. [2021-11-22 14:25:36,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.0) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:25:36,183 INFO L276 IsEmpty]: Start isEmpty. Operand 1291 states and 1718 transitions. [2021-11-22 14:25:36,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2021-11-22 14:25:36,193 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:25:36,193 INFO L514 BasicCegarLoop]: trace histogram [31, 30, 22, 22, 14, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:25:36,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-22 14:25:36,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-22 14:25:36,410 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2021-11-22 14:25:36,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:25:36,410 INFO L85 PathProgramCache]: Analyzing trace with hash -223366827, now seen corresponding path program 1 times [2021-11-22 14:25:36,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:25:36,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154374044] [2021-11-22 14:25:36,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:25:36,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:25:36,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:25:36,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2852 backedges. 722 proven. 0 refuted. 0 times theorem prover too weak. 2130 trivial. 0 not checked. [2021-11-22 14:25:36,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:25:36,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154374044] [2021-11-22 14:25:36,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154374044] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:25:36,690 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:25:36,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:25:36,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354583735] [2021-11-22 14:25:36,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:25:36,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:25:36,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:25:36,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:25:36,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:25:36,693 INFO L87 Difference]: Start difference. First operand 1291 states and 1718 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:25:36,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:25:36,729 INFO L93 Difference]: Finished difference Result 1956 states and 2601 transitions. [2021-11-22 14:25:36,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:25:36,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 449 [2021-11-22 14:25:36,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:25:36,734 INFO L225 Difference]: With dead ends: 1956 [2021-11-22 14:25:36,735 INFO L226 Difference]: Without dead ends: 716 [2021-11-22 14:25:36,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:25:36,737 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 20 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:25:36,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 197 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:25:36,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2021-11-22 14:25:36,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 716. [2021-11-22 14:25:36,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 715 states have (on average 1.3160839160839162) internal successors, (941), 715 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:25:36,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 941 transitions. [2021-11-22 14:25:36,761 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 941 transitions. Word has length 449 [2021-11-22 14:25:36,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:25:36,762 INFO L470 AbstractCegarLoop]: Abstraction has 716 states and 941 transitions. [2021-11-22 14:25:36,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:25:36,763 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 941 transitions. [2021-11-22 14:25:36,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2021-11-22 14:25:36,773 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:25:36,773 INFO L514 BasicCegarLoop]: trace histogram [32, 31, 23, 23, 15, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:25:36,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-22 14:25:36,773 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2021-11-22 14:25:36,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:25:36,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1896228307, now seen corresponding path program 2 times [2021-11-22 14:25:36,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:25:36,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007602978] [2021-11-22 14:25:36,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:25:36,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:25:36,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:25:37,390 INFO L134 CoverageAnalysis]: Checked inductivity of 3069 backedges. 62 proven. 2946 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-11-22 14:25:37,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:25:37,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007602978] [2021-11-22 14:25:37,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007602978] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:25:37,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396580345] [2021-11-22 14:25:37,391 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 14:25:37,391 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:25:37,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:25:37,392 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:25:37,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-22 14:25:37,811 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-22 14:25:37,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 14:25:37,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 2252 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-22 14:25:37,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:25:38,893 INFO L134 CoverageAnalysis]: Checked inductivity of 3069 backedges. 62 proven. 2946 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-11-22 14:25:38,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:25:40,227 INFO L134 CoverageAnalysis]: Checked inductivity of 3069 backedges. 62 proven. 2946 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-11-22 14:25:40,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396580345] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:25:40,228 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 14:25:40,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2021-11-22 14:25:40,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094582090] [2021-11-22 14:25:40,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 14:25:40,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-22 14:25:40,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:25:40,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-22 14:25:40,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2021-11-22 14:25:40,234 INFO L87 Difference]: Start difference. First operand 716 states and 941 transitions. Second operand has 35 states, 34 states have (on average 24.705882352941178) internal successors, (840), 35 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:25:40,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:25:40,910 INFO L93 Difference]: Finished difference Result 1545 states and 2039 transitions. [2021-11-22 14:25:40,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-22 14:25:40,911 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 24.705882352941178) internal successors, (840), 35 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 465 [2021-11-22 14:25:40,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:25:40,921 INFO L225 Difference]: With dead ends: 1545 [2021-11-22 14:25:40,921 INFO L226 Difference]: Without dead ends: 1544 [2021-11-22 14:25:40,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 960 GetRequests, 927 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2021-11-22 14:25:40,923 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 4375 mSDsluCounter, 2306 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4375 SdHoareTripleChecker+Valid, 2412 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 14:25:40,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4375 Valid, 2412 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 14:25:40,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2021-11-22 14:25:40,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 1544. [2021-11-22 14:25:40,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1544 states, 1543 states have (on average 1.3156189241736875) internal successors, (2030), 1543 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:25:40,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 2030 transitions. [2021-11-22 14:25:40,971 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 2030 transitions. Word has length 465 [2021-11-22 14:25:40,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:25:40,972 INFO L470 AbstractCegarLoop]: Abstraction has 1544 states and 2030 transitions. [2021-11-22 14:25:40,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 24.705882352941178) internal successors, (840), 35 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:25:40,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 2030 transitions. [2021-11-22 14:25:41,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1006 [2021-11-22 14:25:41,038 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:25:41,039 INFO L514 BasicCegarLoop]: trace histogram [68, 67, 50, 50, 33, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:25:41,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-22 14:25:41,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-22 14:25:41,267 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2021-11-22 14:25:41,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:25:41,268 INFO L85 PathProgramCache]: Analyzing trace with hash -2085613894, now seen corresponding path program 3 times [2021-11-22 14:25:41,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:25:41,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869841305] [2021-11-22 14:25:41,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:25:41,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:25:41,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:25:43,200 INFO L134 CoverageAnalysis]: Checked inductivity of 14913 backedges. 134 proven. 14646 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2021-11-22 14:25:43,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:25:43,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869841305] [2021-11-22 14:25:43,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869841305] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:25:43,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440945581] [2021-11-22 14:25:43,201 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-22 14:25:43,201 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:25:43,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:25:43,202 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:25:43,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-22 14:25:44,615 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2021-11-22 14:25:44,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 14:25:44,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 4781 conjuncts, 68 conjunts are in the unsatisfiable core [2021-11-22 14:25:44,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:25:46,703 INFO L134 CoverageAnalysis]: Checked inductivity of 14913 backedges. 134 proven. 14646 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2021-11-22 14:25:46,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:25:49,872 INFO L134 CoverageAnalysis]: Checked inductivity of 14913 backedges. 134 proven. 14646 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2021-11-22 14:25:49,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440945581] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:25:49,873 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 14:25:49,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 70 [2021-11-22 14:25:49,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558015118] [2021-11-22 14:25:49,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 14:25:49,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2021-11-22 14:25:49,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:25:49,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-11-22 14:25:49,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2021-11-22 14:25:49,883 INFO L87 Difference]: Start difference. First operand 1544 states and 2030 transitions. Second operand has 71 states, 70 states have (on average 25.885714285714286) internal successors, (1812), 71 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:25:53,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:25:53,462 INFO L93 Difference]: Finished difference Result 3201 states and 4226 transitions. [2021-11-22 14:25:53,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-11-22 14:25:53,463 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 70 states have (on average 25.885714285714286) internal successors, (1812), 71 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1005 [2021-11-22 14:25:53,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:25:53,482 INFO L225 Difference]: With dead ends: 3201 [2021-11-22 14:25:53,482 INFO L226 Difference]: Without dead ends: 3200 [2021-11-22 14:25:53,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2076 GetRequests, 2007 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2021-11-22 14:25:53,486 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 12363 mSDsluCounter, 5196 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12363 SdHoareTripleChecker+Valid, 5302 SdHoareTripleChecker+Invalid, 1049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 409 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-22 14:25:53,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12363 Valid, 5302 Invalid, 1049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [409 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-22 14:25:53,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3200 states. [2021-11-22 14:25:53,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3200 to 3200. [2021-11-22 14:25:53,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3200 states, 3199 states have (on average 1.315411065958112) internal successors, (4208), 3199 states have internal predecessors, (4208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:25:53,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3200 states to 3200 states and 4208 transitions. [2021-11-22 14:25:53,567 INFO L78 Accepts]: Start accepts. Automaton has 3200 states and 4208 transitions. Word has length 1005 [2021-11-22 14:25:53,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:25:53,569 INFO L470 AbstractCegarLoop]: Abstraction has 3200 states and 4208 transitions. [2021-11-22 14:25:53,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 70 states have (on average 25.885714285714286) internal successors, (1812), 71 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:25:53,570 INFO L276 IsEmpty]: Start isEmpty. Operand 3200 states and 4208 transitions. [2021-11-22 14:25:53,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2086 [2021-11-22 14:25:53,605 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:25:53,606 INFO L514 BasicCegarLoop]: trace histogram [140, 139, 104, 104, 69, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:25:53,635 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-22 14:25:53,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-22 14:25:53,807 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2021-11-22 14:25:53,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:25:53,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1334439688, now seen corresponding path program 4 times [2021-11-22 14:25:53,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:25:53,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197269529] [2021-11-22 14:25:53,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:25:53,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:25:55,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:26:00,968 INFO L134 CoverageAnalysis]: Checked inductivity of 65331 backedges. 278 proven. 64776 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2021-11-22 14:26:00,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:26:00,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197269529] [2021-11-22 14:26:00,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197269529] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:26:00,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254912253] [2021-11-22 14:26:00,969 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-22 14:26:00,969 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:26:00,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:26:00,975 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:26:00,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-22 14:26:02,619 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-22 14:26:02,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 14:26:02,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 9839 conjuncts, 140 conjunts are in the unsatisfiable core [2021-11-22 14:26:02,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:26:06,447 INFO L134 CoverageAnalysis]: Checked inductivity of 65331 backedges. 278 proven. 64776 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2021-11-22 14:26:06,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:26:14,754 INFO L134 CoverageAnalysis]: Checked inductivity of 65331 backedges. 278 proven. 64776 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2021-11-22 14:26:14,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254912253] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:26:14,755 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 14:26:14,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71, 71] total 142 [2021-11-22 14:26:14,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316309130] [2021-11-22 14:26:14,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 14:26:14,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 143 states [2021-11-22 14:26:14,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:26:14,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2021-11-22 14:26:14,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10153, Invalid=10153, Unknown=0, NotChecked=0, Total=20306 [2021-11-22 14:26:14,778 INFO L87 Difference]: Start difference. First operand 3200 states and 4208 transitions. Second operand has 143 states, 142 states have (on average 26.450704225352112) internal successors, (3756), 143 states have internal predecessors, (3756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:26:42,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:26:42,160 INFO L93 Difference]: Finished difference Result 6513 states and 8600 transitions. [2021-11-22 14:26:42,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2021-11-22 14:26:42,162 INFO L78 Accepts]: Start accepts. Automaton has has 143 states, 142 states have (on average 26.450704225352112) internal successors, (3756), 143 states have internal predecessors, (3756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2085 [2021-11-22 14:26:42,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:26:42,197 INFO L225 Difference]: With dead ends: 6513 [2021-11-22 14:26:42,197 INFO L226 Difference]: Without dead ends: 6512 [2021-11-22 14:26:42,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4308 GetRequests, 4167 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=10153, Invalid=10153, Unknown=0, NotChecked=0, Total=20306 [2021-11-22 14:26:42,206 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 30740 mSDsluCounter, 10473 mSDsCounter, 0 mSdLazyCounter, 1277 mSolverCounterSat, 1154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30740 SdHoareTripleChecker+Valid, 10579 SdHoareTripleChecker+Invalid, 2431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1154 IncrementalHoareTripleChecker+Valid, 1277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-22 14:26:42,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30740 Valid, 10579 Invalid, 2431 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1154 Valid, 1277 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-22 14:26:42,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6512 states. [2021-11-22 14:26:42,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6512 to 6512. [2021-11-22 14:26:42,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6512 states, 6511 states have (on average 1.3153125479956995) internal successors, (8564), 6511 states have internal predecessors, (8564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:26:42,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6512 states to 6512 states and 8564 transitions. [2021-11-22 14:26:42,381 INFO L78 Accepts]: Start accepts. Automaton has 6512 states and 8564 transitions. Word has length 2085 [2021-11-22 14:26:42,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:26:42,385 INFO L470 AbstractCegarLoop]: Abstraction has 6512 states and 8564 transitions. [2021-11-22 14:26:42,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 143 states, 142 states have (on average 26.450704225352112) internal successors, (3756), 143 states have internal predecessors, (3756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:26:42,387 INFO L276 IsEmpty]: Start isEmpty. Operand 6512 states and 8564 transitions. [2021-11-22 14:26:42,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4246 [2021-11-22 14:26:42,502 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:26:42,503 INFO L514 BasicCegarLoop]: trace histogram [284, 283, 212, 212, 141, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 71, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:26:42,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-22 14:26:42,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:26:42,704 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2021-11-22 14:26:42,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:26:42,706 INFO L85 PathProgramCache]: Analyzing trace with hash -2062095964, now seen corresponding path program 5 times [2021-11-22 14:26:42,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:26:42,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241431585] [2021-11-22 14:26:42,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:26:42,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:26:48,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:27:01,940 INFO L134 CoverageAnalysis]: Checked inductivity of 273087 backedges. 566 proven. 271956 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2021-11-22 14:27:01,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:27:01,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241431585] [2021-11-22 14:27:01,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241431585] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:27:01,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772882059] [2021-11-22 14:27:01,941 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-22 14:27:01,941 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:27:01,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:27:01,953 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:27:01,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-22 14:27:50,631 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 103 check-sat command(s) [2021-11-22 14:27:50,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 14:27:50,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 19955 conjuncts, 284 conjunts are in the unsatisfiable core [2021-11-22 14:27:50,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:27:58,338 INFO L134 CoverageAnalysis]: Checked inductivity of 273087 backedges. 566 proven. 271956 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2021-11-22 14:27:58,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:28:23,884 INFO L134 CoverageAnalysis]: Checked inductivity of 273087 backedges. 566 proven. 271956 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2021-11-22 14:28:23,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772882059] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:28:23,884 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 14:28:23,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [143, 143, 143] total 286 [2021-11-22 14:28:23,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118558291] [2021-11-22 14:28:23,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 14:28:23,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 287 states [2021-11-22 14:28:23,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:28:23,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 287 interpolants. [2021-11-22 14:28:23,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41041, Invalid=41041, Unknown=0, NotChecked=0, Total=82082 [2021-11-22 14:28:23,924 INFO L87 Difference]: Start difference. First operand 6512 states and 8564 transitions. Second operand has 287 states, 286 states have (on average 26.727272727272727) internal successors, (7644), 287 states have internal predecessors, (7644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:34:40,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:34:40,190 INFO L93 Difference]: Finished difference Result 13137 states and 17348 transitions. [2021-11-22 14:34:40,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 286 states. [2021-11-22 14:34:40,191 INFO L78 Accepts]: Start accepts. Automaton has has 287 states, 286 states have (on average 26.727272727272727) internal successors, (7644), 287 states have internal predecessors, (7644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4245 [2021-11-22 14:34:40,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:34:40,252 INFO L225 Difference]: With dead ends: 13137 [2021-11-22 14:34:40,252 INFO L226 Difference]: Without dead ends: 13136 [2021-11-22 14:34:40,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8772 GetRequests, 8487 SyntacticMatches, 0 SemanticMatches, 285 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 564 ImplicationChecksByTransitivity, 25.1s TimeCoverageRelationStatistics Valid=41041, Invalid=41041, Unknown=0, NotChecked=0, Total=82082 [2021-11-22 14:34:40,261 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 75527 mSDsluCounter, 20959 mSDsCounter, 0 mSdLazyCounter, 2535 mSolverCounterSat, 2607 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75527 SdHoareTripleChecker+Valid, 21065 SdHoareTripleChecker+Invalid, 5142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 2607 IncrementalHoareTripleChecker+Valid, 2535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:34:40,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75527 Valid, 21065 Invalid, 5142 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [2607 Valid, 2535 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-11-22 14:34:40,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13136 states. [2021-11-22 14:34:40,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13136 to 13136. [2021-11-22 14:34:40,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13136 states, 13135 states have (on average 1.3152645603349828) internal successors, (17276), 13135 states have internal predecessors, (17276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:34:40,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13136 states to 13136 states and 17276 transitions. [2021-11-22 14:34:40,552 INFO L78 Accepts]: Start accepts. Automaton has 13136 states and 17276 transitions. Word has length 4245 [2021-11-22 14:34:40,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:34:40,556 INFO L470 AbstractCegarLoop]: Abstraction has 13136 states and 17276 transitions. [2021-11-22 14:34:40,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 287 states, 286 states have (on average 26.727272727272727) internal successors, (7644), 287 states have internal predecessors, (7644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:34:40,559 INFO L276 IsEmpty]: Start isEmpty. Operand 13136 states and 17276 transitions. [2021-11-22 14:34:41,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8566 [2021-11-22 14:34:41,010 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:34:41,013 INFO L514 BasicCegarLoop]: trace histogram [572, 571, 428, 428, 285, 143, 143, 143, 143, 143, 143, 143, 143, 143, 143, 143, 143, 143, 143, 143, 143, 143, 143, 143, 143, 143, 143, 143, 143, 143, 142, 142, 142, 142, 142, 142, 142, 142, 142, 142, 142, 142, 142, 142, 142, 142, 142, 142, 142, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:34:41,077 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-11-22 14:34:41,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c21e87-e2cb-4c5c-9e84-fdc660ee32b9/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:34:41,214 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2021-11-22 14:34:41,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:34:41,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1398946084, now seen corresponding path program 6 times [2021-11-22 14:34:41,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:34:41,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835553312] [2021-11-22 14:34:41,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:34:41,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:34:52,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat