./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-restricted-15/McCarthyIterative.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517b0cc-3186-4a11-8733-6cc8a904308e/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517b0cc-3186-4a11-8733-6cc8a904308e/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517b0cc-3186-4a11-8733-6cc8a904308e/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517b0cc-3186-4a11-8733-6cc8a904308e/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-restricted-15/McCarthyIterative.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517b0cc-3186-4a11-8733-6cc8a904308e/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517b0cc-3186-4a11-8733-6cc8a904308e/bin/utaipan-g80aRyZoba --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash faa806fd1be90697a522dfc0988145f6572d5d87fac98caf7aa5fe5b66e6095c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 02:48:06,599 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:48:06,602 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:48:06,635 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:48:06,635 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:48:06,636 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:48:06,638 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:48:06,644 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:48:06,647 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:48:06,653 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:48:06,654 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:48:06,657 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:48:06,657 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:48:06,662 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:48:06,665 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:48:06,668 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:48:06,669 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:48:06,670 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:48:06,672 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:48:06,679 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:48:06,680 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:48:06,683 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:48:06,685 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:48:06,686 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:48:06,696 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:48:06,697 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:48:06,697 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:48:06,699 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:48:06,701 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:48:06,702 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:48:06,702 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:48:06,703 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:48:06,705 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:48:06,707 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:48:06,708 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:48:06,709 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:48:06,709 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:48:06,710 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:48:06,710 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:48:06,711 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:48:06,711 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:48:06,712 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517b0cc-3186-4a11-8733-6cc8a904308e/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-22 02:48:06,753 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:48:06,753 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:48:06,754 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:48:06,754 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:48:06,755 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:48:06,756 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:48:06,756 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:48:06,756 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:48:06,756 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:48:06,756 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:48:06,758 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:48:06,758 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:48:06,758 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:48:06,758 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:48:06,758 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:48:06,759 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:48:06,759 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:48:06,759 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:48:06,760 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:48:06,760 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 02:48:06,760 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:48:06,761 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:48:06,761 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:48:06,761 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:48:06,761 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:48:06,762 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-22 02:48:06,762 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:48:06,763 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:48:06,763 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:48:06,763 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:48:06,763 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:48:06,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:48:06,764 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:48:06,764 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:48:06,765 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:48:06,765 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:48:06,765 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:48:06,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:48:06,765 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:48:06,766 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:48:06,766 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_4517b0cc-3186-4a11-8733-6cc8a904308e/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517b0cc-3186-4a11-8733-6cc8a904308e/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> faa806fd1be90697a522dfc0988145f6572d5d87fac98caf7aa5fe5b66e6095c [2022-11-22 02:48:07,026 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:48:07,048 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:48:07,051 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:48:07,052 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:48:07,053 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:48:07,054 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517b0cc-3186-4a11-8733-6cc8a904308e/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/termination-restricted-15/McCarthyIterative.c [2022-11-22 02:48:10,149 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:48:10,380 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:48:10,380 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517b0cc-3186-4a11-8733-6cc8a904308e/sv-benchmarks/c/termination-restricted-15/McCarthyIterative.c [2022-11-22 02:48:10,385 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517b0cc-3186-4a11-8733-6cc8a904308e/bin/utaipan-g80aRyZoba/data/af90bec45/382516727563498eab7c7725fb05536a/FLAG12ab5c847 [2022-11-22 02:48:10,406 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517b0cc-3186-4a11-8733-6cc8a904308e/bin/utaipan-g80aRyZoba/data/af90bec45/382516727563498eab7c7725fb05536a [2022-11-22 02:48:10,410 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:48:10,413 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:48:10,418 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:48:10,419 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:48:10,423 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:48:10,424 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:48:10" (1/1) ... [2022-11-22 02:48:10,425 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6235bfe2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:48:10, skipping insertion in model container [2022-11-22 02:48:10,426 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:48:10" (1/1) ... [2022-11-22 02:48:10,435 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:48:10,449 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:48:10,612 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:48:10,621 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:48:10,635 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:48:10,646 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:48:10,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:48:10 WrapperNode [2022-11-22 02:48:10,646 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:48:10,648 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:48:10,648 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:48:10,648 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:48:10,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:48:10" (1/1) ... [2022-11-22 02:48:10,660 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:48:10" (1/1) ... [2022-11-22 02:48:10,686 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 27 [2022-11-22 02:48:10,687 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:48:10,690 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:48:10,691 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:48:10,691 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:48:10,701 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:48:10" (1/1) ... [2022-11-22 02:48:10,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:48:10" (1/1) ... [2022-11-22 02:48:10,703 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:48:10" (1/1) ... [2022-11-22 02:48:10,704 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:48:10" (1/1) ... [2022-11-22 02:48:10,705 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:48:10" (1/1) ... [2022-11-22 02:48:10,710 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:48:10" (1/1) ... [2022-11-22 02:48:10,716 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:48:10" (1/1) ... [2022-11-22 02:48:10,718 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:48:10" (1/1) ... [2022-11-22 02:48:10,719 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:48:10,724 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:48:10,724 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:48:10,724 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:48:10,726 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:48:10" (1/1) ... [2022-11-22 02:48:10,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:48:10,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517b0cc-3186-4a11-8733-6cc8a904308e/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:48:10,758 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517b0cc-3186-4a11-8733-6cc8a904308e/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:48:10,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517b0cc-3186-4a11-8733-6cc8a904308e/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:48:10,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:48:10,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:48:10,901 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:48:10,904 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:48:11,005 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:48:11,026 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:48:11,027 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 02:48:11,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:48:11 BoogieIcfgContainer [2022-11-22 02:48:11,030 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:48:11,034 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:48:11,034 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:48:11,038 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:48:11,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:48:10" (1/3) ... [2022-11-22 02:48:11,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e0db07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:48:11, skipping insertion in model container [2022-11-22 02:48:11,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:48:10" (2/3) ... [2022-11-22 02:48:11,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e0db07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:48:11, skipping insertion in model container [2022-11-22 02:48:11,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:48:11" (3/3) ... [2022-11-22 02:48:11,042 INFO L112 eAbstractionObserver]: Analyzing ICFG McCarthyIterative.c [2022-11-22 02:48:11,066 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:48:11,066 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-22 02:48:11,126 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:48:11,135 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1609d2cd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:48:11,136 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-22 02:48:11,141 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:48:11,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-22 02:48:11,149 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:48:11,150 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-22 02:48:11,151 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 02:48:11,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:48:11,158 INFO L85 PathProgramCache]: Analyzing trace with hash 2186083, now seen corresponding path program 1 times [2022-11-22 02:48:11,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:48:11,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428831226] [2022-11-22 02:48:11,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:48:11,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:48:11,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:48:11,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:48:11,375 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:48:11,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428831226] [2022-11-22 02:48:11,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428831226] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:48:11,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:48:11,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:48:11,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495884591] [2022-11-22 02:48:11,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:48:11,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:48:11,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:48:11,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:48:11,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:48:11,428 INFO L87 Difference]: Start difference. First operand has 20 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:48:11,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:48:11,519 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2022-11-22 02:48:11,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:48:11,522 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-22 02:48:11,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:48:11,529 INFO L225 Difference]: With dead ends: 20 [2022-11-22 02:48:11,529 INFO L226 Difference]: Without dead ends: 18 [2022-11-22 02:48:11,537 INFO L412 NwaCegarLoop]: 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 [2022-11-22 02:48:11,540 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:48:11,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 24 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:48:11,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-22 02:48:11,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-22 02:48:11,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:48:11,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2022-11-22 02:48:11,609 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 4 [2022-11-22 02:48:11,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:48:11,609 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2022-11-22 02:48:11,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:48:11,610 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2022-11-22 02:48:11,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-22 02:48:11,610 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:48:11,610 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-22 02:48:11,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:48:11,611 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 02:48:11,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:48:11,638 INFO L85 PathProgramCache]: Analyzing trace with hash 2185763, now seen corresponding path program 1 times [2022-11-22 02:48:11,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:48:11,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837073478] [2022-11-22 02:48:11,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:48:11,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:48:11,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:48:11,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:48:11,668 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:48:11,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837073478] [2022-11-22 02:48:11,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837073478] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:48:11,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:48:11,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 02:48:11,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110668518] [2022-11-22 02:48:11,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:48:11,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:48:11,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:48:11,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:48:11,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:48:11,675 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:48:11,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:48:11,709 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2022-11-22 02:48:11,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:48:11,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-22 02:48:11,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:48:11,710 INFO L225 Difference]: With dead ends: 27 [2022-11-22 02:48:11,711 INFO L226 Difference]: Without dead ends: 26 [2022-11-22 02:48:11,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:48:11,713 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 9 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:48:11,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 19 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:48:11,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-22 02:48:11,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2022-11-22 02:48:11,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 23 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) [2022-11-22 02:48:11,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2022-11-22 02:48:11,739 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 4 [2022-11-22 02:48:11,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:48:11,739 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2022-11-22 02:48:11,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:48:11,740 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2022-11-22 02:48:11,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 02:48:11,740 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:48:11,740 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-22 02:48:11,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 02:48:11,741 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 02:48:11,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:48:11,742 INFO L85 PathProgramCache]: Analyzing trace with hash 67768631, now seen corresponding path program 1 times [2022-11-22 02:48:11,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:48:11,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551959236] [2022-11-22 02:48:11,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:48:11,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:48:11,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:48:11,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:48:11,799 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:48:11,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551959236] [2022-11-22 02:48:11,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551959236] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:48:11,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:48:11,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 02:48:11,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769267154] [2022-11-22 02:48:11,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:48:11,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:48:11,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:48:11,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:48:11,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:48:11,806 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:48:11,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:48:11,849 INFO L93 Difference]: Finished difference Result 24 states and 29 transitions. [2022-11-22 02:48:11,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:48:11,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-22 02:48:11,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:48:11,851 INFO L225 Difference]: With dead ends: 24 [2022-11-22 02:48:11,851 INFO L226 Difference]: Without dead ends: 23 [2022-11-22 02:48:11,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:48:11,853 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 12 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:48:11,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 9 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:48:11,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-22 02:48:11,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-22 02:48:11,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 22 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:48:11,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2022-11-22 02:48:11,861 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 5 [2022-11-22 02:48:11,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:48:11,861 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2022-11-22 02:48:11,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:48:11,862 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2022-11-22 02:48:11,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 02:48:11,863 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:48:11,863 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-22 02:48:11,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 02:48:11,864 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 02:48:11,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:48:11,865 INFO L85 PathProgramCache]: Analyzing trace with hash 67758701, now seen corresponding path program 1 times [2022-11-22 02:48:11,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:48:11,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660463584] [2022-11-22 02:48:11,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:48:11,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:48:11,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:48:11,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:48:11,908 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:48:11,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660463584] [2022-11-22 02:48:11,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660463584] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:48:11,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:48:11,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:48:11,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111008160] [2022-11-22 02:48:11,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:48:11,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:48:11,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:48:11,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:48:11,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:48:11,911 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:48:11,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:48:11,947 INFO L93 Difference]: Finished difference Result 23 states and 28 transitions. [2022-11-22 02:48:11,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:48:11,947 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-22 02:48:11,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:48:11,948 INFO L225 Difference]: With dead ends: 23 [2022-11-22 02:48:11,948 INFO L226 Difference]: Without dead ends: 22 [2022-11-22 02:48:11,949 INFO L412 NwaCegarLoop]: 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 [2022-11-22 02:48:11,950 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 1 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:48:11,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 22 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:48:11,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-22 02:48:11,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-11-22 02:48:11,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 21 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) [2022-11-22 02:48:11,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2022-11-22 02:48:11,957 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 5 [2022-11-22 02:48:11,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:48:11,957 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2022-11-22 02:48:11,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:48:11,958 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2022-11-22 02:48:11,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-22 02:48:11,958 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:48:11,958 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-22 02:48:11,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 02:48:11,959 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 02:48:11,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:48:11,960 INFO L85 PathProgramCache]: Analyzing trace with hash 2100827621, now seen corresponding path program 1 times [2022-11-22 02:48:11,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:48:11,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218400763] [2022-11-22 02:48:11,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:48:11,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:48:11,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:48:12,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:48:12,035 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:48:12,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218400763] [2022-11-22 02:48:12,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218400763] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:48:12,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:48:12,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 02:48:12,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216138225] [2022-11-22 02:48:12,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:48:12,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:48:12,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:48:12,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:48:12,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:48:12,042 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:48:12,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:48:12,105 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2022-11-22 02:48:12,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:48:12,106 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-22 02:48:12,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:48:12,109 INFO L225 Difference]: With dead ends: 28 [2022-11-22 02:48:12,109 INFO L226 Difference]: Without dead ends: 26 [2022-11-22 02:48:12,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:48:12,114 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 7 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:48:12,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 16 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:48:12,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-22 02:48:12,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2022-11-22 02:48:12,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.4) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:48:12,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-11-22 02:48:12,121 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 6 [2022-11-22 02:48:12,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:48:12,122 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-11-22 02:48:12,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:48:12,122 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-11-22 02:48:12,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-22 02:48:12,123 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:48:12,123 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:48:12,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 02:48:12,124 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 02:48:12,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:48:12,125 INFO L85 PathProgramCache]: Analyzing trace with hash 701146873, now seen corresponding path program 1 times [2022-11-22 02:48:12,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:48:12,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724892828] [2022-11-22 02:48:12,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:48:12,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:48:12,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:48:12,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:48:12,168 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:48:12,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724892828] [2022-11-22 02:48:12,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724892828] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:48:12,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:48:12,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 02:48:12,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872567858] [2022-11-22 02:48:12,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:48:12,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:48:12,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:48:12,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:48:12,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:48:12,173 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:48:12,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:48:12,214 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2022-11-22 02:48:12,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:48:12,215 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-22 02:48:12,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:48:12,217 INFO L225 Difference]: With dead ends: 27 [2022-11-22 02:48:12,217 INFO L226 Difference]: Without dead ends: 25 [2022-11-22 02:48:12,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:48:12,219 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 7 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:48:12,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 7 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:48:12,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-22 02:48:12,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2022-11-22 02:48:12,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 20 states have (on average 1.25) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:48:12,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2022-11-22 02:48:12,233 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 7 [2022-11-22 02:48:12,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:48:12,234 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2022-11-22 02:48:12,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:48:12,237 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2022-11-22 02:48:12,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-22 02:48:12,238 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:48:12,238 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:48:12,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 02:48:12,239 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 02:48:12,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:48:12,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1440573906, now seen corresponding path program 1 times [2022-11-22 02:48:12,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:48:12,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711182223] [2022-11-22 02:48:12,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:48:12,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:48:12,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:48:12,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:48:12,338 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:48:12,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711182223] [2022-11-22 02:48:12,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711182223] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:48:12,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:48:12,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:48:12,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329490344] [2022-11-22 02:48:12,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:48:12,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:48:12,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:48:12,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:48:12,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:48:12,347 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 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) [2022-11-22 02:48:12,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:48:12,392 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2022-11-22 02:48:12,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 02:48:12,394 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 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 [2022-11-22 02:48:12,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:48:12,394 INFO L225 Difference]: With dead ends: 23 [2022-11-22 02:48:12,395 INFO L226 Difference]: Without dead ends: 22 [2022-11-22 02:48:12,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:48:12,397 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 6 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:48:12,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 27 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:48:12,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-22 02:48:12,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-11-22 02:48:12,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 20 states have (on average 1.2) internal successors, (24), 21 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) [2022-11-22 02:48:12,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2022-11-22 02:48:12,404 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 10 [2022-11-22 02:48:12,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:48:12,405 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2022-11-22 02:48:12,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 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) [2022-11-22 02:48:12,405 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2022-11-22 02:48:12,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-22 02:48:12,406 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:48:12,406 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1] [2022-11-22 02:48:12,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 02:48:12,407 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 02:48:12,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:48:12,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1412363732, now seen corresponding path program 1 times [2022-11-22 02:48:12,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:48:12,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425308080] [2022-11-22 02:48:12,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:48:12,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:48:12,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:48:12,524 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:48:12,526 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:48:12,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425308080] [2022-11-22 02:48:12,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425308080] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:48:12,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101798355] [2022-11-22 02:48:12,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:48:12,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:48:12,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517b0cc-3186-4a11-8733-6cc8a904308e/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:48:12,532 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517b0cc-3186-4a11-8733-6cc8a904308e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:48:12,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517b0cc-3186-4a11-8733-6cc8a904308e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 02:48:12,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:48:12,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 02:48:12,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:48:12,699 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:48:12,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:48:12,755 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:48:12,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101798355] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:48:12,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [980687904] [2022-11-22 02:48:12,779 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-22 02:48:12,779 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:48:12,783 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:48:12,790 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:48:12,791 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:48:13,034 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:48:13,212 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '474#(and (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483637)) (<= |ULTIMATE.start_main_~x~0#1| 111) (< 2147483646 |ULTIMATE.start_main_~c~0#1|))' at error location [2022-11-22 02:48:13,212 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:48:13,212 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:48:13,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2022-11-22 02:48:13,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177052892] [2022-11-22 02:48:13,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:48:13,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:48:13,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:48:13,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:48:13,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-11-22 02:48:13,226 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 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) [2022-11-22 02:48:13,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:48:13,287 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2022-11-22 02:48:13,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:48:13,288 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-22 02:48:13,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:48:13,289 INFO L225 Difference]: With dead ends: 63 [2022-11-22 02:48:13,289 INFO L226 Difference]: Without dead ends: 61 [2022-11-22 02:48:13,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-11-22 02:48:13,290 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 42 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:48:13,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 32 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:48:13,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-11-22 02:48:13,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 44. [2022-11-22 02:48:13,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 42 states have (on average 1.1666666666666667) internal successors, (49), 43 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:48:13,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2022-11-22 02:48:13,298 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 12 [2022-11-22 02:48:13,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:48:13,298 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2022-11-22 02:48:13,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 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) [2022-11-22 02:48:13,299 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2022-11-22 02:48:13,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-22 02:48:13,300 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:48:13,300 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1] [2022-11-22 02:48:13,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517b0cc-3186-4a11-8733-6cc8a904308e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-22 02:48:13,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517b0cc-3186-4a11-8733-6cc8a904308e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:48:13,506 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 02:48:13,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:48:13,507 INFO L85 PathProgramCache]: Analyzing trace with hash 584432161, now seen corresponding path program 2 times [2022-11-22 02:48:13,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:48:13,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442840839] [2022-11-22 02:48:13,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:48:13,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:48:13,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:48:13,654 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:48:13,654 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:48:13,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442840839] [2022-11-22 02:48:13,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442840839] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:48:13,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676248557] [2022-11-22 02:48:13,655 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 02:48:13,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:48:13,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517b0cc-3186-4a11-8733-6cc8a904308e/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:48:13,656 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517b0cc-3186-4a11-8733-6cc8a904308e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:48:13,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517b0cc-3186-4a11-8733-6cc8a904308e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 02:48:13,704 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-22 02:48:13,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:48:13,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-22 02:48:13,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:48:13,816 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:48:13,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:48:13,932 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:48:13,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676248557] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:48:13,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1822333247] [2022-11-22 02:48:13,937 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-22 02:48:13,937 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:48:13,937 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:48:13,938 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:48:13,938 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:48:14,034 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:48:14,187 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '784#(and (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483637)) (<= |ULTIMATE.start_main_~x~0#1| 111) (< 2147483646 |ULTIMATE.start_main_~c~0#1|))' at error location [2022-11-22 02:48:14,187 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:48:14,187 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:48:14,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-22 02:48:14,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890088351] [2022-11-22 02:48:14,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:48:14,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-22 02:48:14,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:48:14,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-22 02:48:14,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-11-22 02:48:14,189 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:48:14,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:48:14,366 INFO L93 Difference]: Finished difference Result 183 states and 220 transitions. [2022-11-22 02:48:14,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-22 02:48:14,367 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 0 states have call successors, (0), 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 30 [2022-11-22 02:48:14,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:48:14,377 INFO L225 Difference]: With dead ends: 183 [2022-11-22 02:48:14,377 INFO L226 Difference]: Without dead ends: 181 [2022-11-22 02:48:14,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-11-22 02:48:14,381 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 103 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:48:14,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 68 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:48:14,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-11-22 02:48:14,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 104. [2022-11-22 02:48:14,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 102 states have (on average 1.1274509803921569) internal successors, (115), 103 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:48:14,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 115 transitions. [2022-11-22 02:48:14,401 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 115 transitions. Word has length 30 [2022-11-22 02:48:14,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:48:14,402 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 115 transitions. [2022-11-22 02:48:14,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:48:14,406 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 115 transitions. [2022-11-22 02:48:14,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-22 02:48:14,412 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:48:14,412 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 1, 1] [2022-11-22 02:48:14,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517b0cc-3186-4a11-8733-6cc8a904308e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 02:48:14,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517b0cc-3186-4a11-8733-6cc8a904308e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:48:14,618 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 02:48:14,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:48:14,619 INFO L85 PathProgramCache]: Analyzing trace with hash 2116175611, now seen corresponding path program 3 times [2022-11-22 02:48:14,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:48:14,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747081127] [2022-11-22 02:48:14,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:48:14,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:48:14,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:48:15,007 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:48:15,007 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:48:15,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747081127] [2022-11-22 02:48:15,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747081127] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:48:15,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880389920] [2022-11-22 02:48:15,008 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 02:48:15,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:48:15,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517b0cc-3186-4a11-8733-6cc8a904308e/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:48:15,010 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517b0cc-3186-4a11-8733-6cc8a904308e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:48:15,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517b0cc-3186-4a11-8733-6cc8a904308e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 02:48:15,078 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 02:48:15,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:48:15,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-22 02:48:15,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:48:15,229 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:48:15,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:48:15,538 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:48:15,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880389920] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:48:15,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1706708979] [2022-11-22 02:48:15,541 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-22 02:48:15,541 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:48:15,542 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:48:15,542 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:48:15,542 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:48:15,610 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:48:15,752 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1521#(and (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483637)) (<= |ULTIMATE.start_main_~x~0#1| 111) (< 2147483646 |ULTIMATE.start_main_~c~0#1|))' at error location [2022-11-22 02:48:15,752 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:48:15,752 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:48:15,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-11-22 02:48:15,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857624940] [2022-11-22 02:48:15,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:48:15,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-22 02:48:15,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:48:15,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-22 02:48:15,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=297, Invalid=573, Unknown=0, NotChecked=0, Total=870 [2022-11-22 02:48:15,755 INFO L87 Difference]: Start difference. First operand 104 states and 115 transitions. Second operand has 24 states, 23 states have (on average 5.739130434782608) internal successors, (132), 23 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:48:16,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:48:16,019 INFO L93 Difference]: Finished difference Result 558 states and 658 transitions. [2022-11-22 02:48:16,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-22 02:48:16,020 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.739130434782608) internal successors, (132), 23 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-22 02:48:16,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:48:16,022 INFO L225 Difference]: With dead ends: 558 [2022-11-22 02:48:16,023 INFO L226 Difference]: Without dead ends: 556 [2022-11-22 02:48:16,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=297, Invalid=573, Unknown=0, NotChecked=0, Total=870 [2022-11-22 02:48:16,024 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 258 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:48:16,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 140 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:48:16,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2022-11-22 02:48:16,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 224. [2022-11-22 02:48:16,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 222 states have (on average 1.1126126126126126) internal successors, (247), 223 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:48:16,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 247 transitions. [2022-11-22 02:48:16,043 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 247 transitions. Word has length 66 [2022-11-22 02:48:16,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:48:16,044 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 247 transitions. [2022-11-22 02:48:16,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.739130434782608) internal successors, (132), 23 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:48:16,044 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 247 transitions. [2022-11-22 02:48:16,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-22 02:48:16,046 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:48:16,046 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 22, 22, 1, 1] [2022-11-22 02:48:16,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517b0cc-3186-4a11-8733-6cc8a904308e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-22 02:48:16,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517b0cc-3186-4a11-8733-6cc8a904308e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-22 02:48:16,253 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 02:48:16,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:48:16,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1715064401, now seen corresponding path program 4 times [2022-11-22 02:48:16,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:48:16,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241412663] [2022-11-22 02:48:16,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:48:16,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:48:16,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:48:17,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1496 backedges. 0 proven. 1496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:48:17,014 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:48:17,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241412663] [2022-11-22 02:48:17,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241412663] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:48:17,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410982247] [2022-11-22 02:48:17,015 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-22 02:48:17,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:48:17,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517b0cc-3186-4a11-8733-6cc8a904308e/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:48:17,019 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517b0cc-3186-4a11-8733-6cc8a904308e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:48:17,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517b0cc-3186-4a11-8733-6cc8a904308e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 02:48:17,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:48:17,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-22 02:48:17,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:48:17,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1496 backedges. 0 proven. 1496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:48:17,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:48:18,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1496 backedges. 0 proven. 1496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:48:18,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410982247] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:48:18,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1855104972] [2022-11-22 02:48:18,467 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-22 02:48:18,468 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:48:18,468 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:48:18,468 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:48:18,469 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:48:18,513 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:48:18,702 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3260#(and (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483637)) (<= |ULTIMATE.start_main_~x~0#1| 111) (< 2147483646 |ULTIMATE.start_main_~c~0#1|))' at error location [2022-11-22 02:48:18,703 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:48:18,703 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:48:18,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2022-11-22 02:48:18,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995896059] [2022-11-22 02:48:18,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:48:18,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-22 02:48:18,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:48:18,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-22 02:48:18,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1149, Invalid=1713, Unknown=0, NotChecked=0, Total=2862 [2022-11-22 02:48:18,707 INFO L87 Difference]: Start difference. First operand 224 states and 247 transitions. Second operand has 48 states, 47 states have (on average 5.872340425531915) internal successors, (276), 47 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:48:19,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:48:19,440 INFO L93 Difference]: Finished difference Result 1848 states and 2128 transitions. [2022-11-22 02:48:19,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-22 02:48:19,441 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 5.872340425531915) internal successors, (276), 47 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2022-11-22 02:48:19,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:48:19,454 INFO L225 Difference]: With dead ends: 1848 [2022-11-22 02:48:19,454 INFO L226 Difference]: Without dead ends: 1846 [2022-11-22 02:48:19,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1149, Invalid=1713, Unknown=0, NotChecked=0, Total=2862 [2022-11-22 02:48:19,457 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 622 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:48:19,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [622 Valid, 284 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 02:48:19,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1846 states. [2022-11-22 02:48:19,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1846 to 464. [2022-11-22 02:48:19,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 462 states have (on average 1.106060606060606) internal successors, (511), 463 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:48:19,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 511 transitions. [2022-11-22 02:48:19,526 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 511 transitions. Word has length 138 [2022-11-22 02:48:19,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:48:19,529 INFO L495 AbstractCegarLoop]: Abstraction has 464 states and 511 transitions. [2022-11-22 02:48:19,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 5.872340425531915) internal successors, (276), 47 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:48:19,530 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 511 transitions. [2022-11-22 02:48:19,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2022-11-22 02:48:19,546 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:48:19,547 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 47, 46, 46, 1, 1] [2022-11-22 02:48:19,564 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517b0cc-3186-4a11-8733-6cc8a904308e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-22 02:48:19,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517b0cc-3186-4a11-8733-6cc8a904308e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-22 02:48:19,754 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 02:48:19,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:48:19,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1307620585, now seen corresponding path program 5 times [2022-11-22 02:48:19,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:48:19,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979171754] [2022-11-22 02:48:19,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:48:19,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:48:19,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:48:22,573 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 0 proven. 6440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:48:22,573 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:48:22,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979171754] [2022-11-22 02:48:22,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979171754] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:48:22,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709114697] [2022-11-22 02:48:22,574 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 02:48:22,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:48:22,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517b0cc-3186-4a11-8733-6cc8a904308e/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:48:22,579 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517b0cc-3186-4a11-8733-6cc8a904308e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:48:22,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517b0cc-3186-4a11-8733-6cc8a904308e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-22 02:48:22,746 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2022-11-22 02:48:22,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:48:22,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-22 02:48:22,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:48:23,220 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 0 proven. 6440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:48:23,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:48:27,115 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 0 proven. 6440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:48:27,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709114697] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:48:27,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [515841430] [2022-11-22 02:48:27,118 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-22 02:48:27,118 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:48:27,118 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:48:27,120 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:48:27,120 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:48:27,171 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:48:27,453 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7597#(and (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483637)) (<= |ULTIMATE.start_main_~x~0#1| 111) (< 2147483646 |ULTIMATE.start_main_~c~0#1|))' at error location [2022-11-22 02:48:27,453 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:48:27,453 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:48:27,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 94 [2022-11-22 02:48:27,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76798822] [2022-11-22 02:48:27,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:48:27,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-11-22 02:48:27,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:48:27,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-11-22 02:48:27,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4581, Invalid=5721, Unknown=0, NotChecked=0, Total=10302 [2022-11-22 02:48:27,464 INFO L87 Difference]: Start difference. First operand 464 states and 511 transitions. Second operand has 96 states, 95 states have (on average 5.936842105263158) internal successors, (564), 95 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:48:30,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:48:30,895 INFO L93 Difference]: Finished difference Result 6588 states and 7444 transitions. [2022-11-22 02:48:30,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-11-22 02:48:30,896 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 5.936842105263158) internal successors, (564), 95 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 282 [2022-11-22 02:48:30,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:48:30,916 INFO L225 Difference]: With dead ends: 6588 [2022-11-22 02:48:30,916 INFO L226 Difference]: Without dead ends: 6586 [2022-11-22 02:48:30,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 891 GetRequests, 791 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 838 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=4581, Invalid=5721, Unknown=0, NotChecked=0, Total=10302 [2022-11-22 02:48:30,923 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 1878 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 554 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1878 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 1035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 554 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:48:30,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1878 Valid, 572 Invalid, 1035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [554 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 02:48:30,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6586 states. [2022-11-22 02:48:31,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6586 to 944. [2022-11-22 02:48:31,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 944 states, 942 states have (on average 1.1029723991507432) internal successors, (1039), 943 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:48:31,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 944 states to 944 states and 1039 transitions. [2022-11-22 02:48:31,011 INFO L78 Accepts]: Start accepts. Automaton has 944 states and 1039 transitions. Word has length 282 [2022-11-22 02:48:31,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:48:31,012 INFO L495 AbstractCegarLoop]: Abstraction has 944 states and 1039 transitions. [2022-11-22 02:48:31,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 5.936842105263158) internal successors, (564), 95 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:48:31,013 INFO L276 IsEmpty]: Start isEmpty. Operand 944 states and 1039 transitions. [2022-11-22 02:48:31,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2022-11-22 02:48:31,026 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:48:31,026 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 95, 94, 94, 1, 1] [2022-11-22 02:48:31,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517b0cc-3186-4a11-8733-6cc8a904308e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-22 02:48:31,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517b0cc-3186-4a11-8733-6cc8a904308e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:48:31,233 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 02:48:31,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:48:31,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1823044121, now seen corresponding path program 6 times [2022-11-22 02:48:31,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:48:31,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618837837] [2022-11-22 02:48:31,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:48:31,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:48:31,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:48:39,981 INFO L134 CoverageAnalysis]: Checked inductivity of 26696 backedges. 0 proven. 26696 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:48:39,981 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:48:39,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618837837] [2022-11-22 02:48:39,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618837837] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:48:39,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146789263] [2022-11-22 02:48:39,982 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 02:48:39,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:48:39,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517b0cc-3186-4a11-8733-6cc8a904308e/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:48:39,987 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517b0cc-3186-4a11-8733-6cc8a904308e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:48:40,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517b0cc-3186-4a11-8733-6cc8a904308e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-22 02:48:40,180 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 02:48:40,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:48:40,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 953 conjuncts, 96 conjunts are in the unsatisfiable core [2022-11-22 02:48:40,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:48:41,164 INFO L134 CoverageAnalysis]: Checked inductivity of 26696 backedges. 0 proven. 26696 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:48:41,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:48:53,173 INFO L134 CoverageAnalysis]: Checked inductivity of 26696 backedges. 0 proven. 26696 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:48:53,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146789263] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:48:53,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [818893349] [2022-11-22 02:48:53,176 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-22 02:48:53,176 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:48:53,177 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:48:53,177 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:48:53,177 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:48:53,220 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:48:53,671 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '19506#(and (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483637)) (<= |ULTIMATE.start_main_~x~0#1| 111) (< 2147483646 |ULTIMATE.start_main_~c~0#1|))' at error location [2022-11-22 02:48:53,672 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:48:53,672 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:48:53,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 190 [2022-11-22 02:48:53,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156493244] [2022-11-22 02:48:53,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:48:53,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2022-11-22 02:48:53,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:48:53,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2022-11-22 02:48:53,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18357, Invalid=20649, Unknown=0, NotChecked=0, Total=39006 [2022-11-22 02:48:53,689 INFO L87 Difference]: Start difference. First operand 944 states and 1039 transitions. Second operand has 192 states, 191 states have (on average 5.968586387434555) internal successors, (1140), 191 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:17,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:49:17,875 INFO L93 Difference]: Finished difference Result 24708 states and 27580 transitions. [2022-11-22 02:49:17,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2022-11-22 02:49:17,879 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 5.968586387434555) internal successors, (1140), 191 states have internal predecessors, (1140), 0 states have call successors, (0), 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 570 [2022-11-22 02:49:17,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:49:17,964 INFO L225 Difference]: With dead ends: 24708 [2022-11-22 02:49:17,964 INFO L226 Difference]: Without dead ends: 24706 [2022-11-22 02:49:17,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1803 GetRequests, 1607 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1702 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=18357, Invalid=20649, Unknown=0, NotChecked=0, Total=39006 [2022-11-22 02:49:17,983 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 3569 mSDsluCounter, 1140 mSDsCounter, 0 mSdLazyCounter, 963 mSolverCounterSat, 1029 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3569 SdHoareTripleChecker+Valid, 1148 SdHoareTripleChecker+Invalid, 1992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1029 IncrementalHoareTripleChecker+Valid, 963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-22 02:49:17,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3569 Valid, 1148 Invalid, 1992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1029 Valid, 963 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-22 02:49:18,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24706 states. [2022-11-22 02:49:18,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24706 to 1904. [2022-11-22 02:49:18,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1904 states, 1902 states have (on average 1.101472134595163) internal successors, (2095), 1903 states have internal predecessors, (2095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:18,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1904 states to 1904 states and 2095 transitions. [2022-11-22 02:49:18,299 INFO L78 Accepts]: Start accepts. Automaton has 1904 states and 2095 transitions. Word has length 570 [2022-11-22 02:49:18,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:49:18,300 INFO L495 AbstractCegarLoop]: Abstraction has 1904 states and 2095 transitions. [2022-11-22 02:49:18,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 5.968586387434555) internal successors, (1140), 191 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:18,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1904 states and 2095 transitions. [2022-11-22 02:49:18,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1147 [2022-11-22 02:49:18,360 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:49:18,360 INFO L195 NwaCegarLoop]: trace histogram [191, 191, 191, 191, 190, 190, 1, 1] [2022-11-22 02:49:18,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517b0cc-3186-4a11-8733-6cc8a904308e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-22 02:49:18,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517b0cc-3186-4a11-8733-6cc8a904308e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:49:18,572 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 02:49:18,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:49:18,572 INFO L85 PathProgramCache]: Analyzing trace with hash -566668409, now seen corresponding path program 7 times [2022-11-22 02:49:18,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:49:18,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125715740] [2022-11-22 02:49:18,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:49:18,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:49:19,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:49:52,821 INFO L134 CoverageAnalysis]: Checked inductivity of 108680 backedges. 0 proven. 108680 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:49:52,822 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:49:52,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125715740] [2022-11-22 02:49:52,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125715740] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:49:52,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618328591] [2022-11-22 02:49:52,823 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-22 02:49:52,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:49:52,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517b0cc-3186-4a11-8733-6cc8a904308e/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:49:52,830 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517b0cc-3186-4a11-8733-6cc8a904308e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:49:52,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517b0cc-3186-4a11-8733-6cc8a904308e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-22 02:49:53,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:49:53,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 1913 conjuncts, 192 conjunts are in the unsatisfiable core [2022-11-22 02:49:53,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:49:55,003 INFO L134 CoverageAnalysis]: Checked inductivity of 108680 backedges. 0 proven. 108680 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:49:55,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:50:40,485 INFO L134 CoverageAnalysis]: Checked inductivity of 108680 backedges. 0 proven. 108680 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:50:40,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618328591] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:50:40,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1750099286] [2022-11-22 02:50:40,488 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-22 02:50:40,488 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:50:40,488 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:50:40,489 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:50:40,489 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:50:40,521 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:50:41,243 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '56063#(and (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483637)) (<= |ULTIMATE.start_main_~x~0#1| 111) (< 2147483646 |ULTIMATE.start_main_~c~0#1|))' at error location [2022-11-22 02:50:41,243 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:50:41,243 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:50:41,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191, 191] total 382 [2022-11-22 02:50:41,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448338787] [2022-11-22 02:50:41,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:50:41,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2022-11-22 02:50:41,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:50:41,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2022-11-22 02:50:41,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73557, Invalid=78153, Unknown=0, NotChecked=0, Total=151710 [2022-11-22 02:50:41,288 INFO L87 Difference]: Start difference. First operand 1904 states and 2095 transitions. Second operand has 384 states, 383 states have (on average 5.984334203655353) internal successors, (2292), 383 states have internal predecessors, (2292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:56:55,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:56:55,654 INFO L93 Difference]: Finished difference Result 95508 states and 105868 transitions. [2022-11-22 02:56:55,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2022-11-22 02:56:55,656 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 383 states have (on average 5.984334203655353) internal successors, (2292), 383 states have internal predecessors, (2292), 0 states have call successors, (0), 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 1146 [2022-11-22 02:56:55,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:56:55,811 INFO L225 Difference]: With dead ends: 95508 [2022-11-22 02:56:55,811 INFO L226 Difference]: Without dead ends: 95506 [2022-11-22 02:56:55,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3627 GetRequests, 3239 SyntacticMatches, 0 SemanticMatches, 388 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3430 ImplicationChecksByTransitivity, 59.2s TimeCoverageRelationStatistics Valid=73557, Invalid=78153, Unknown=0, NotChecked=0, Total=151710 [2022-11-22 02:56:55,849 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 8457 mSDsluCounter, 2292 mSDsCounter, 0 mSdLazyCounter, 1935 mSolverCounterSat, 2368 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8457 SdHoareTripleChecker+Valid, 2300 SdHoareTripleChecker+Invalid, 4303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2368 IncrementalHoareTripleChecker+Valid, 1935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:56:55,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8457 Valid, 2300 Invalid, 4303 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2368 Valid, 1935 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-22 02:56:55,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95506 states. [2022-11-22 02:56:56,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95506 to 3824. [2022-11-22 02:56:56,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3824 states, 3822 states have (on average 1.1007326007326008) internal successors, (4207), 3823 states have internal predecessors, (4207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:56:56,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3824 states to 3824 states and 4207 transitions. [2022-11-22 02:56:56,746 INFO L78 Accepts]: Start accepts. Automaton has 3824 states and 4207 transitions. Word has length 1146 [2022-11-22 02:56:56,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:56:56,747 INFO L495 AbstractCegarLoop]: Abstraction has 3824 states and 4207 transitions. [2022-11-22 02:56:56,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 383 states have (on average 5.984334203655353) internal successors, (2292), 383 states have internal predecessors, (2292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:56:56,749 INFO L276 IsEmpty]: Start isEmpty. Operand 3824 states and 4207 transitions. [2022-11-22 02:56:56,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2299 [2022-11-22 02:56:56,789 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:56:56,790 INFO L195 NwaCegarLoop]: trace histogram [383, 383, 383, 383, 382, 382, 1, 1] [2022-11-22 02:56:56,797 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517b0cc-3186-4a11-8733-6cc8a904308e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-22 02:56:56,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517b0cc-3186-4a11-8733-6cc8a904308e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-22 02:56:56,991 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 02:56:56,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:56:56,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1051730233, now seen corresponding path program 8 times [2022-11-22 02:56:56,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:56:56,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392711802] [2022-11-22 02:56:56,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:56:56,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:56:58,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:59:50,401 INFO L134 CoverageAnalysis]: Checked inductivity of 438536 backedges. 0 proven. 438536 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:59:50,401 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:59:50,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392711802] [2022-11-22 02:59:50,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392711802] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:59:50,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299260297] [2022-11-22 02:59:50,402 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 02:59:50,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:59:50,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517b0cc-3186-4a11-8733-6cc8a904308e/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:59:50,410 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517b0cc-3186-4a11-8733-6cc8a904308e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:59:50,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517b0cc-3186-4a11-8733-6cc8a904308e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-22 02:59:55,412 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 383 check-sat command(s) [2022-11-22 02:59:55,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:59:55,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 3833 conjuncts, 384 conjunts are in the unsatisfiable core [2022-11-22 02:59:55,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:59:59,724 INFO L134 CoverageAnalysis]: Checked inductivity of 438536 backedges. 0 proven. 438536 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:59:59,724 INFO L328 TraceCheckSpWp]: Computing backward predicates...