./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/xcsp/AllInterval-007.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/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_dcf24577-cacc-458d-8da2-7f4c0b102a67/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/xcsp/AllInterval-007.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/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 32bit --witnessprinter.graph.data.programhash 79ad480fc17f59cc4e46ec2dbc023b5da3460c72b3c8ca1cc6dbc35a93f8cf64 --- 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 02:17:30,583 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:17:30,586 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:17:30,619 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:17:30,620 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:17:30,621 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:17:30,622 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:17:30,624 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:17:30,626 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:17:30,627 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:17:30,628 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:17:30,629 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:17:30,630 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:17:30,631 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:17:30,632 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:17:30,633 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:17:30,634 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:17:30,635 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:17:30,637 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:17:30,639 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:17:30,641 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:17:30,648 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:17:30,649 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:17:30,650 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:17:30,654 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:17:30,655 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:17:30,655 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:17:30,656 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:17:30,657 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:17:30,658 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:17:30,658 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:17:30,667 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:17:30,670 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:17:30,671 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:17:30,673 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:17:30,673 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:17:30,674 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:17:30,674 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:17:30,674 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:17:30,678 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:17:30,679 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:17:30,680 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-22 02:17:30,729 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:17:30,730 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:17:30,730 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:17:30,730 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:17:30,731 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:17:30,731 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:17:30,731 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:17:30,731 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:17:30,732 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:17:30,732 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:17:30,732 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:17:30,732 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:17:30,732 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:17:30,733 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:17:30,733 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:17:30,733 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:17:30,733 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:17:30,733 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:17:30,734 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:17:30,736 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 02:17:30,736 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 02:17:30,737 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:17:30,737 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 02:17:30,737 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:17:30,738 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:17:30,738 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:17:30,738 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:17:30,739 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-22 02:17:30,739 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 02:17:30,740 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:17:30,740 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:17:30,740 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:17:30,740 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:17:30,741 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:17:30,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:17:30,741 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:17:30,742 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:17:30,742 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:17:30,743 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:17:30,743 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:17:30,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:17:30,743 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:17:30,743 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:17:30,744 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_dcf24577-cacc-458d-8da2-7f4c0b102a67/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79ad480fc17f59cc4e46ec2dbc023b5da3460c72b3c8ca1cc6dbc35a93f8cf64 [2022-11-22 02:17:31,010 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:17:31,038 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:17:31,040 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:17:31,042 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:17:31,042 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:17:31,043 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/xcsp/AllInterval-007.c [2022-11-22 02:17:34,169 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:17:34,379 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:17:34,379 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/sv-benchmarks/c/xcsp/AllInterval-007.c [2022-11-22 02:17:34,387 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/bin/utaipan-g80aRyZoba/data/cb87fb41f/395eb474d93b4647b4e93d3f256703cf/FLAG1e24719df [2022-11-22 02:17:34,411 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/bin/utaipan-g80aRyZoba/data/cb87fb41f/395eb474d93b4647b4e93d3f256703cf [2022-11-22 02:17:34,414 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:17:34,416 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:17:34,421 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:17:34,421 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:17:34,426 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:17:34,427 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:17:34" (1/1) ... [2022-11-22 02:17:34,428 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57edd793 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:17:34, skipping insertion in model container [2022-11-22 02:17:34,429 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:17:34" (1/1) ... [2022-11-22 02:17:34,437 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:17:34,477 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:17:34,716 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/sv-benchmarks/c/xcsp/AllInterval-007.c[3690,3703] [2022-11-22 02:17:34,728 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:17:34,742 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:17:34,787 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/sv-benchmarks/c/xcsp/AllInterval-007.c[3690,3703] [2022-11-22 02:17:34,802 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:17:34,817 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:17:34,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:17:34 WrapperNode [2022-11-22 02:17:34,818 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:17:34,819 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:17:34,820 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:17:34,820 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:17:34,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:17:34" (1/1) ... [2022-11-22 02:17:34,853 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:17:34" (1/1) ... [2022-11-22 02:17:34,893 INFO L138 Inliner]: procedures = 13, calls = 75, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 198 [2022-11-22 02:17:34,893 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:17:34,894 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:17:34,894 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:17:34,894 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:17:34,905 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:17:34" (1/1) ... [2022-11-22 02:17:34,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:17:34" (1/1) ... [2022-11-22 02:17:34,919 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:17:34" (1/1) ... [2022-11-22 02:17:34,919 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:17:34" (1/1) ... [2022-11-22 02:17:34,926 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:17:34" (1/1) ... [2022-11-22 02:17:34,940 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:17:34" (1/1) ... [2022-11-22 02:17:34,941 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:17:34" (1/1) ... [2022-11-22 02:17:34,943 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:17:34" (1/1) ... [2022-11-22 02:17:34,945 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:17:34,951 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:17:34,951 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:17:34,951 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:17:34,952 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:17:34" (1/1) ... [2022-11-22 02:17:34,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:17:34,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:17:34,985 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:17:34,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:17:35,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:17:35,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:17:35,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:17:35,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:17:35,026 INFO L130 BoogieDeclarations]: Found specification of procedure assume [2022-11-22 02:17:35,026 INFO L138 BoogieDeclarations]: Found implementation of procedure assume [2022-11-22 02:17:35,103 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:17:35,106 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:17:35,677 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:17:35,699 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:17:35,699 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-22 02:17:35,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:17:35 BoogieIcfgContainer [2022-11-22 02:17:35,702 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:17:35,705 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:17:35,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:17:35,708 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:17:35,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:17:34" (1/3) ... [2022-11-22 02:17:35,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5250b554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:17:35, skipping insertion in model container [2022-11-22 02:17:35,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:17:34" (2/3) ... [2022-11-22 02:17:35,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5250b554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:17:35, skipping insertion in model container [2022-11-22 02:17:35,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:17:35" (3/3) ... [2022-11-22 02:17:35,711 INFO L112 eAbstractionObserver]: Analyzing ICFG AllInterval-007.c [2022-11-22 02:17:35,732 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:17:35,732 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2022-11-22 02:17:35,815 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:17:35,824 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;@db4bef5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:17:35,825 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2022-11-22 02:17:35,830 INFO L276 IsEmpty]: Start isEmpty. Operand has 147 states, 53 states have (on average 1.5660377358490567) internal successors, (83), 77 states have internal predecessors, (83), 68 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2022-11-22 02:17:35,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-11-22 02:17:35,854 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:17:35,855 INFO L195 NwaCegarLoop]: trace histogram [62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:17:35,856 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-22 02:17:35,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:17:35,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1471271386, now seen corresponding path program 1 times [2022-11-22 02:17:35,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:17:35,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898957023] [2022-11-22 02:17:35,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:17:35,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:17:36,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:17:37,113 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 2 proven. 59 refuted. 0 times theorem prover too weak. 3721 trivial. 0 not checked. [2022-11-22 02:17:37,114 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:17:37,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898957023] [2022-11-22 02:17:37,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898957023] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:17:37,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829205521] [2022-11-22 02:17:37,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:17:37,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:17:37,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:17:37,120 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:17:37,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 02:17:37,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:17:37,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-22 02:17:37,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:17:38,081 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 2 proven. 59 refuted. 0 times theorem prover too weak. 3721 trivial. 0 not checked. [2022-11-22 02:17:38,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:17:38,544 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 2 proven. 59 refuted. 0 times theorem prover too weak. 3721 trivial. 0 not checked. [2022-11-22 02:17:38,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829205521] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:17:38,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [252325364] [2022-11-22 02:17:38,599 INFO L159 IcfgInterpreter]: Started Sifa with 81 locations of interest [2022-11-22 02:17:38,603 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:17:38,608 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:17:38,616 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:17:38,616 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:17:56,131 INFO L197 IcfgInterpreter]: Interpreting procedure assume with input of size 56 for LOIs [2022-11-22 02:17:56,157 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:18:50,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [252325364] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:18:50,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:18:50,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [78] imperfect sequences [5, 4, 4] total 85 [2022-11-22 02:18:50,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97679489] [2022-11-22 02:18:50,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:18:50,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-11-22 02:18:50,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:18:50,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-11-22 02:18:50,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3471, Invalid=3839, Unknown=0, NotChecked=0, Total=7310 [2022-11-22 02:18:50,405 INFO L87 Difference]: Start difference. First operand has 147 states, 53 states have (on average 1.5660377358490567) internal successors, (83), 77 states have internal predecessors, (83), 68 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) Second operand has 80 states, 16 states have (on average 1.0625) internal successors, (17), 17 states have internal predecessors, (17), 62 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-11-22 02:18:53,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:18:53,143 INFO L93 Difference]: Finished difference Result 147 states and 219 transitions. [2022-11-22 02:18:53,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-11-22 02:18:53,150 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 16 states have (on average 1.0625) internal successors, (17), 17 states have internal predecessors, (17), 62 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) Word has length 202 [2022-11-22 02:18:53,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:18:53,163 INFO L225 Difference]: With dead ends: 147 [2022-11-22 02:18:53,164 INFO L226 Difference]: Without dead ends: 131 [2022-11-22 02:18:53,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 609 GetRequests, 523 SyntacticMatches, 2 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 54.2s TimeCoverageRelationStatistics Valid=3471, Invalid=3839, Unknown=0, NotChecked=0, Total=7310 [2022-11-22 02:18:53,172 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 431 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:18:53,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 180 Invalid, 1153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 863 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-22 02:18:53,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-11-22 02:18:53,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2022-11-22 02:18:53,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 51 states have (on average 1.3137254901960784) internal successors, (67), 62 states have internal predecessors, (67), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2022-11-22 02:18:53,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 201 transitions. [2022-11-22 02:18:53,315 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 201 transitions. Word has length 202 [2022-11-22 02:18:53,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:18:53,318 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 201 transitions. [2022-11-22 02:18:53,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 16 states have (on average 1.0625) internal successors, (17), 17 states have internal predecessors, (17), 62 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-11-22 02:18:53,319 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 201 transitions. [2022-11-22 02:18:53,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-11-22 02:18:53,323 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:18:53,324 INFO L195 NwaCegarLoop]: trace histogram [62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:18:53,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 02:18:53,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-22 02:18:53,532 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-22 02:18:53,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:18:53,533 INFO L85 PathProgramCache]: Analyzing trace with hash 504716024, now seen corresponding path program 1 times [2022-11-22 02:18:53,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:18:53,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066304102] [2022-11-22 02:18:53,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:53,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:18:53,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:18:54,020 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 3721 trivial. 0 not checked. [2022-11-22 02:18:54,021 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:18:54,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066304102] [2022-11-22 02:18:54,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066304102] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:18:54,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394690830] [2022-11-22 02:18:54,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:54,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:18:54,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:18:54,026 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:18:54,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 02:18:54,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:18:54,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-22 02:18:54,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:18:54,605 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 3721 trivial. 0 not checked. [2022-11-22 02:18:54,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:18:54,969 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 3721 trivial. 0 not checked. [2022-11-22 02:18:54,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394690830] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:18:54,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1258680483] [2022-11-22 02:18:54,981 INFO L159 IcfgInterpreter]: Started Sifa with 84 locations of interest [2022-11-22 02:18:54,981 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:18:54,982 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:18:54,983 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:18:54,983 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:19:10,251 INFO L197 IcfgInterpreter]: Interpreting procedure assume with input of size 56 for LOIs [2022-11-22 02:19:10,266 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:20:08,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1258680483] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:20:08,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:20:08,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [80] imperfect sequences [5, 5, 5] total 86 [2022-11-22 02:20:08,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349312293] [2022-11-22 02:20:08,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:20:08,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2022-11-22 02:20:08,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:20:08,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2022-11-22 02:20:08,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3485, Invalid=3997, Unknown=0, NotChecked=0, Total=7482 [2022-11-22 02:20:08,455 INFO L87 Difference]: Start difference. First operand 131 states and 201 transitions. Second operand has 82 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 62 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-11-22 02:20:11,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:20:11,385 INFO L93 Difference]: Finished difference Result 132 states and 202 transitions. [2022-11-22 02:20:11,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-11-22 02:20:11,386 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 62 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) Word has length 205 [2022-11-22 02:20:11,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:20:11,389 INFO L225 Difference]: With dead ends: 132 [2022-11-22 02:20:11,389 INFO L226 Difference]: Without dead ends: 130 [2022-11-22 02:20:11,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 618 GetRequests, 529 SyntacticMatches, 4 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 58.2s TimeCoverageRelationStatistics Valid=3485, Invalid=3997, Unknown=0, NotChecked=0, Total=7482 [2022-11-22 02:20:11,393 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 281 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 1239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:20:11,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 163 Invalid, 1239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 1027 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-22 02:20:11,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-11-22 02:20:11,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 129. [2022-11-22 02:20:11,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 60 states have internal predecessors, (65), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2022-11-22 02:20:11,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 199 transitions. [2022-11-22 02:20:11,464 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 199 transitions. Word has length 205 [2022-11-22 02:20:11,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:20:11,465 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 199 transitions. [2022-11-22 02:20:11,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 62 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-11-22 02:20:11,466 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 199 transitions. [2022-11-22 02:20:11,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-11-22 02:20:11,470 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:20:11,470 INFO L195 NwaCegarLoop]: trace histogram [63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:20:11,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 02:20:11,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:20:11,677 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-22 02:20:11,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:20:11,678 INFO L85 PathProgramCache]: Analyzing trace with hash -2937429, now seen corresponding path program 1 times [2022-11-22 02:20:11,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:20:11,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844550232] [2022-11-22 02:20:11,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:20:11,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:20:11,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:20:12,109 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 6 proven. 116 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2022-11-22 02:20:12,110 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:20:12,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844550232] [2022-11-22 02:20:12,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844550232] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:20:12,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628630313] [2022-11-22 02:20:12,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:20:12,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:20:12,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:20:12,112 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:20:12,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 02:20:12,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:20:12,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-22 02:20:12,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:20:12,582 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 2 proven. 60 refuted. 0 times theorem prover too weak. 3844 trivial. 0 not checked. [2022-11-22 02:20:12,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:20:12,976 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 2 proven. 60 refuted. 0 times theorem prover too weak. 3844 trivial. 0 not checked. [2022-11-22 02:20:12,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628630313] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:20:12,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1779951579] [2022-11-22 02:20:12,985 INFO L159 IcfgInterpreter]: Started Sifa with 89 locations of interest [2022-11-22 02:20:12,985 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:20:12,986 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:20:12,986 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:20:12,987 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:20:27,947 INFO L197 IcfgInterpreter]: Interpreting procedure assume with input of size 8 for LOIs [2022-11-22 02:20:27,948 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:21:34,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1779951579] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:21:34,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:21:34,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [84] imperfect sequences [5, 5, 5] total 92 [2022-11-22 02:21:34,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205005002] [2022-11-22 02:21:34,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:21:34,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-11-22 02:21:34,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:21:34,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-11-22 02:21:34,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3899, Invalid=4657, Unknown=0, NotChecked=0, Total=8556 [2022-11-22 02:21:34,044 INFO L87 Difference]: Start difference. First operand 129 states and 199 transitions. Second operand has 86 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 23 states have internal predecessors, (24), 63 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2022-11-22 02:21:37,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:21:37,778 INFO L93 Difference]: Finished difference Result 140 states and 212 transitions. [2022-11-22 02:21:37,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-11-22 02:21:37,779 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 23 states have internal predecessors, (24), 63 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) Word has length 212 [2022-11-22 02:21:37,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:21:37,781 INFO L225 Difference]: With dead ends: 140 [2022-11-22 02:21:37,781 INFO L226 Difference]: Without dead ends: 138 [2022-11-22 02:21:37,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 640 GetRequests, 545 SyntacticMatches, 4 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 66.1s TimeCoverageRelationStatistics Valid=3899, Invalid=4657, Unknown=0, NotChecked=0, Total=8556 [2022-11-22 02:21:37,785 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 403 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 1305 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 1583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 1305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:21:37,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 163 Invalid, 1583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 1305 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-22 02:21:37,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-11-22 02:21:37,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 136. [2022-11-22 02:21:37,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 57 states have (on average 1.263157894736842) internal successors, (72), 66 states have internal predecessors, (72), 68 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2022-11-22 02:21:37,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 208 transitions. [2022-11-22 02:21:37,868 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 208 transitions. Word has length 212 [2022-11-22 02:21:37,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:21:37,869 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 208 transitions. [2022-11-22 02:21:37,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 23 states have internal predecessors, (24), 63 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2022-11-22 02:21:37,870 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 208 transitions. [2022-11-22 02:21:37,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-11-22 02:21:37,873 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:21:37,874 INFO L195 NwaCegarLoop]: trace histogram [63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:21:37,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-22 02:21:38,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:21:38,080 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-22 02:21:38,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:21:38,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1285618895, now seen corresponding path program 1 times [2022-11-22 02:21:38,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:21:38,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030429575] [2022-11-22 02:21:38,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:21:38,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:21:38,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:21:38,432 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 2 proven. 60 refuted. 0 times theorem prover too weak. 3844 trivial. 0 not checked. [2022-11-22 02:21:38,433 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:21:38,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030429575] [2022-11-22 02:21:38,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030429575] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:21:38,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056403247] [2022-11-22 02:21:38,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:21:38,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:21:38,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:21:38,442 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:21:38,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 02:21:38,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:21:38,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-22 02:21:38,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:21:38,918 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 2 proven. 60 refuted. 0 times theorem prover too weak. 3844 trivial. 0 not checked. [2022-11-22 02:21:38,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:21:39,291 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 2 proven. 60 refuted. 0 times theorem prover too weak. 3844 trivial. 0 not checked. [2022-11-22 02:21:39,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056403247] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:21:39,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1026162991] [2022-11-22 02:21:39,295 INFO L159 IcfgInterpreter]: Started Sifa with 91 locations of interest [2022-11-22 02:21:39,295 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:21:39,296 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:21:39,296 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:21:39,296 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:21:53,696 INFO L197 IcfgInterpreter]: Interpreting procedure assume with input of size 8 for LOIs [2022-11-22 02:21:53,698 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:23:05,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1026162991] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:23:05,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:23:05,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [85] imperfect sequences [5, 5, 5] total 91 [2022-11-22 02:23:05,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206185607] [2022-11-22 02:23:05,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:23:05,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-11-22 02:23:05,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:23:05,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-11-22 02:23:05,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3895, Invalid=4477, Unknown=0, NotChecked=0, Total=8372 [2022-11-22 02:23:05,889 INFO L87 Difference]: Start difference. First operand 136 states and 208 transitions. Second operand has 87 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 24 states have internal predecessors, (26), 63 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2022-11-22 02:23:10,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:23:10,217 INFO L93 Difference]: Finished difference Result 138 states and 210 transitions. [2022-11-22 02:23:10,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-11-22 02:23:10,219 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 24 states have internal predecessors, (26), 63 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) Word has length 214 [2022-11-22 02:23:10,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:23:10,222 INFO L225 Difference]: With dead ends: 138 [2022-11-22 02:23:10,222 INFO L226 Difference]: Without dead ends: 136 [2022-11-22 02:23:10,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 645 GetRequests, 549 SyntacticMatches, 6 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 72.2s TimeCoverageRelationStatistics Valid=3895, Invalid=4477, Unknown=0, NotChecked=0, Total=8372 [2022-11-22 02:23:10,225 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 155 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1491 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 1661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:23:10,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 162 Invalid, 1661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1491 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-22 02:23:10,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-11-22 02:23:10,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 127. [2022-11-22 02:23:10,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 51 states have (on average 1.2352941176470589) internal successors, (63), 58 states have internal predecessors, (63), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2022-11-22 02:23:10,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 197 transitions. [2022-11-22 02:23:10,314 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 197 transitions. Word has length 214 [2022-11-22 02:23:10,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:23:10,315 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 197 transitions. [2022-11-22 02:23:10,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 24 states have internal predecessors, (26), 63 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2022-11-22 02:23:10,316 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 197 transitions. [2022-11-22 02:23:10,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-11-22 02:23:10,320 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:23:10,320 INFO L195 NwaCegarLoop]: trace histogram [64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:23:10,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 02:23:10,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:23:10,526 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-22 02:23:10,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:23:10,527 INFO L85 PathProgramCache]: Analyzing trace with hash -492329700, now seen corresponding path program 1 times [2022-11-22 02:23:10,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:23:10,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699545073] [2022-11-22 02:23:10,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:23:10,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:23:10,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:23:10,921 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 10 proven. 114 refuted. 0 times theorem prover too weak. 3908 trivial. 0 not checked. [2022-11-22 02:23:10,921 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:23:10,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699545073] [2022-11-22 02:23:10,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699545073] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:23:10,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081218465] [2022-11-22 02:23:10,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:23:10,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:23:10,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:23:10,923 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:23:10,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-22 02:23:11,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:23:11,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-22 02:23:11,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:23:11,408 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 4 proven. 59 refuted. 0 times theorem prover too weak. 3969 trivial. 0 not checked. [2022-11-22 02:23:11,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:23:11,790 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 4 proven. 59 refuted. 0 times theorem prover too weak. 3969 trivial. 0 not checked. [2022-11-22 02:23:11,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081218465] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:23:11,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [350857366] [2022-11-22 02:23:11,793 INFO L159 IcfgInterpreter]: Started Sifa with 94 locations of interest [2022-11-22 02:23:11,793 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:23:11,794 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:23:11,794 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:23:11,794 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:23:26,635 INFO L197 IcfgInterpreter]: Interpreting procedure assume with input of size 56 for LOIs [2022-11-22 02:23:26,651 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:24:43,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [350857366] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:24:43,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:24:43,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [88] imperfect sequences [5, 5, 5] total 96 [2022-11-22 02:24:43,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482175731] [2022-11-22 02:24:43,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:24:43,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2022-11-22 02:24:43,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:24:43,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2022-11-22 02:24:43,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4232, Invalid=5080, Unknown=0, NotChecked=0, Total=9312 [2022-11-22 02:24:43,957 INFO L87 Difference]: Start difference. First operand 127 states and 197 transitions. Second operand has 90 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 27 states have internal predecessors, (28), 64 states have call successors, (64), 1 states have call predecessors, (64), 1 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2022-11-22 02:24:47,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:24:47,744 INFO L93 Difference]: Finished difference Result 146 states and 220 transitions. [2022-11-22 02:24:47,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-11-22 02:24:47,745 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 27 states have internal predecessors, (28), 64 states have call successors, (64), 1 states have call predecessors, (64), 1 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) Word has length 219 [2022-11-22 02:24:47,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:24:47,751 INFO L225 Difference]: With dead ends: 146 [2022-11-22 02:24:47,751 INFO L226 Difference]: Without dead ends: 144 [2022-11-22 02:24:47,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 661 GetRequests, 561 SyntacticMatches, 5 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 592 ImplicationChecksByTransitivity, 77.3s TimeCoverageRelationStatistics Valid=4232, Invalid=5080, Unknown=0, NotChecked=0, Total=9312 [2022-11-22 02:24:47,754 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 375 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 1184 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 1406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 1184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:24:47,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 150 Invalid, 1406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 1184 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-22 02:24:47,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-11-22 02:24:47,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 139. [2022-11-22 02:24:47,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 61 states have (on average 1.2295081967213115) internal successors, (75), 68 states have internal predecessors, (75), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2022-11-22 02:24:47,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 213 transitions. [2022-11-22 02:24:47,836 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 213 transitions. Word has length 219 [2022-11-22 02:24:47,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:24:47,838 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 213 transitions. [2022-11-22 02:24:47,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 27 states have internal predecessors, (28), 64 states have call successors, (64), 1 states have call predecessors, (64), 1 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2022-11-22 02:24:47,839 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 213 transitions. [2022-11-22 02:24:47,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-11-22 02:24:47,842 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:24:47,842 INFO L195 NwaCegarLoop]: trace histogram [64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:24:47,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-22 02:24:48,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:24:48,050 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-22 02:24:48,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:24:48,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1240689408, now seen corresponding path program 1 times [2022-11-22 02:24:48,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:24:48,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177111498] [2022-11-22 02:24:48,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:24:48,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:24:48,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:24:48,429 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 2 proven. 61 refuted. 0 times theorem prover too weak. 3969 trivial. 0 not checked. [2022-11-22 02:24:48,429 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:24:48,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177111498] [2022-11-22 02:24:48,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177111498] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:24:48,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183949372] [2022-11-22 02:24:48,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:24:48,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:24:48,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:24:48,431 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:24:48,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-22 02:24:48,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:24:48,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-22 02:24:48,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:24:48,930 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 4 proven. 59 refuted. 0 times theorem prover too weak. 3969 trivial. 0 not checked. [2022-11-22 02:24:48,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:24:49,320 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 4 proven. 59 refuted. 0 times theorem prover too weak. 3969 trivial. 0 not checked. [2022-11-22 02:24:49,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183949372] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:24:49,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1967035434] [2022-11-22 02:24:49,322 INFO L159 IcfgInterpreter]: Started Sifa with 96 locations of interest [2022-11-22 02:24:49,322 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:24:49,323 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:24:49,323 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:24:49,323 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:25:04,765 INFO L197 IcfgInterpreter]: Interpreting procedure assume with input of size 56 for LOIs [2022-11-22 02:25:04,780 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:26:24,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1967035434] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:26:24,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:26:24,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [89] imperfect sequences [7, 5, 5] total 100 [2022-11-22 02:26:24,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111588247] [2022-11-22 02:26:24,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:26:24,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2022-11-22 02:26:24,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:26:24,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2022-11-22 02:26:24,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4494, Invalid=5606, Unknown=0, NotChecked=0, Total=10100 [2022-11-22 02:26:24,767 INFO L87 Difference]: Start difference. First operand 139 states and 213 transitions. Second operand has 91 states, 25 states have (on average 1.2) internal successors, (30), 28 states have internal predecessors, (30), 64 states have call successors, (64), 1 states have call predecessors, (64), 1 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2022-11-22 02:26:29,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:26:29,892 INFO L93 Difference]: Finished difference Result 152 states and 228 transitions. [2022-11-22 02:26:29,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-11-22 02:26:29,894 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 25 states have (on average 1.2) internal successors, (30), 28 states have internal predecessors, (30), 64 states have call successors, (64), 1 states have call predecessors, (64), 1 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) Word has length 221 [2022-11-22 02:26:29,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:26:29,896 INFO L225 Difference]: With dead ends: 152 [2022-11-22 02:26:29,896 INFO L226 Difference]: Without dead ends: 150 [2022-11-22 02:26:29,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 668 GetRequests, 563 SyntacticMatches, 6 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 80.0s TimeCoverageRelationStatistics Valid=4494, Invalid=5606, Unknown=0, NotChecked=0, Total=10100 [2022-11-22 02:26:29,899 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 442 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1725 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 1971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 1725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-22 02:26:29,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [511 Valid, 152 Invalid, 1971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 1725 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-22 02:26:29,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-11-22 02:26:29,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 141. [2022-11-22 02:26:29,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 63 states have (on average 1.2222222222222223) internal successors, (77), 70 states have internal predecessors, (77), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2022-11-22 02:26:29,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 215 transitions. [2022-11-22 02:26:29,966 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 215 transitions. Word has length 221 [2022-11-22 02:26:29,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:26:29,969 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 215 transitions. [2022-11-22 02:26:29,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 25 states have (on average 1.2) internal successors, (30), 28 states have internal predecessors, (30), 64 states have call successors, (64), 1 states have call predecessors, (64), 1 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2022-11-22 02:26:29,970 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 215 transitions. [2022-11-22 02:26:29,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-11-22 02:26:29,971 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:26:29,972 INFO L195 NwaCegarLoop]: trace histogram [64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:26:29,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-22 02:26:30,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-22 02:26:30,172 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-22 02:26:30,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:26:30,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1272101512, now seen corresponding path program 1 times [2022-11-22 02:26:30,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:26:30,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121654164] [2022-11-22 02:26:30,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:26:30,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:26:30,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:26:30,584 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 10 proven. 114 refuted. 0 times theorem prover too weak. 3908 trivial. 0 not checked. [2022-11-22 02:26:30,584 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:26:30,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121654164] [2022-11-22 02:26:30,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121654164] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:26:30,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153823994] [2022-11-22 02:26:30,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:26:30,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:26:30,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:26:30,587 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:26:30,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-22 02:26:30,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:26:30,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-22 02:26:30,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:26:31,037 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 4 proven. 59 refuted. 0 times theorem prover too weak. 3969 trivial. 0 not checked. [2022-11-22 02:26:31,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:26:31,330 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 4 proven. 59 refuted. 0 times theorem prover too weak. 3969 trivial. 0 not checked. [2022-11-22 02:26:31,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153823994] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:26:31,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1032212637] [2022-11-22 02:26:31,332 INFO L159 IcfgInterpreter]: Started Sifa with 96 locations of interest [2022-11-22 02:26:31,332 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:26:31,333 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:26:31,333 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:26:31,333 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:26:45,838 INFO L197 IcfgInterpreter]: Interpreting procedure assume with input of size 56 for LOIs [2022-11-22 02:26:45,850 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:28:03,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1032212637] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:28:03,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:28:03,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [89] imperfect sequences [5, 5, 5] total 97 [2022-11-22 02:28:03,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452615090] [2022-11-22 02:28:03,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:28:03,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2022-11-22 02:28:03,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:28:03,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2022-11-22 02:28:03,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4316, Invalid=5190, Unknown=0, NotChecked=0, Total=9506 [2022-11-22 02:28:03,273 INFO L87 Difference]: Start difference. First operand 141 states and 215 transitions. Second operand has 91 states, 25 states have (on average 1.2) internal successors, (30), 28 states have internal predecessors, (30), 64 states have call successors, (64), 1 states have call predecessors, (64), 1 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2022-11-22 02:28:08,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:28:08,188 INFO L93 Difference]: Finished difference Result 152 states and 228 transitions. [2022-11-22 02:28:08,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-11-22 02:28:08,189 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 25 states have (on average 1.2) internal successors, (30), 28 states have internal predecessors, (30), 64 states have call successors, (64), 1 states have call predecessors, (64), 1 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) Word has length 221 [2022-11-22 02:28:08,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:28:08,190 INFO L225 Difference]: With dead ends: 152 [2022-11-22 02:28:08,191 INFO L226 Difference]: Without dead ends: 150 [2022-11-22 02:28:08,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 667 GetRequests, 565 SyntacticMatches, 6 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603 ImplicationChecksByTransitivity, 77.4s TimeCoverageRelationStatistics Valid=4316, Invalid=5190, Unknown=0, NotChecked=0, Total=9506 [2022-11-22 02:28:08,193 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 345 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1494 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 1721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 1494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:28:08,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [414 Valid, 163 Invalid, 1721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 1494 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-22 02:28:08,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-11-22 02:28:08,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 141. [2022-11-22 02:28:08,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 63 states have (on average 1.2222222222222223) internal successors, (77), 70 states have internal predecessors, (77), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2022-11-22 02:28:08,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 215 transitions. [2022-11-22 02:28:08,256 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 215 transitions. Word has length 221 [2022-11-22 02:28:08,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:28:08,257 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 215 transitions. [2022-11-22 02:28:08,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 25 states have (on average 1.2) internal successors, (30), 28 states have internal predecessors, (30), 64 states have call successors, (64), 1 states have call predecessors, (64), 1 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2022-11-22 02:28:08,257 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 215 transitions. [2022-11-22 02:28:08,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2022-11-22 02:28:08,259 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:28:08,259 INFO L195 NwaCegarLoop]: trace histogram [64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:28:08,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-22 02:28:08,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-22 02:28:08,460 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-22 02:28:08,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:28:08,460 INFO L85 PathProgramCache]: Analyzing trace with hash -795712420, now seen corresponding path program 1 times [2022-11-22 02:28:08,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:28:08,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053677178] [2022-11-22 02:28:08,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:28:08,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:28:08,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:28:08,757 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 4 proven. 59 refuted. 0 times theorem prover too weak. 3969 trivial. 0 not checked. [2022-11-22 02:28:08,758 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:28:08,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053677178] [2022-11-22 02:28:08,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053677178] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:28:08,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675043625] [2022-11-22 02:28:08,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:28:08,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:28:08,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:28:08,760 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:28:08,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-22 02:28:08,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:28:08,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-22 02:28:08,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:28:09,243 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 3969 trivial. 0 not checked. [2022-11-22 02:28:09,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:28:09,607 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 3969 trivial. 0 not checked. [2022-11-22 02:28:09,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675043625] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:28:09,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [606932367] [2022-11-22 02:28:09,609 INFO L159 IcfgInterpreter]: Started Sifa with 98 locations of interest [2022-11-22 02:28:09,609 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:28:09,610 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:28:09,610 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:28:09,610 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:28:24,400 INFO L197 IcfgInterpreter]: Interpreting procedure assume with input of size 56 for LOIs [2022-11-22 02:28:24,412 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:29:53,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [606932367] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:29:53,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:29:53,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [90] imperfect sequences [5, 9, 9] total 107 [2022-11-22 02:29:53,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887967224] [2022-11-22 02:29:53,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:29:53,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2022-11-22 02:29:53,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:29:53,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2022-11-22 02:29:53,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4872, Invalid=6684, Unknown=0, NotChecked=0, Total=11556 [2022-11-22 02:29:53,612 INFO L87 Difference]: Start difference. First operand 141 states and 215 transitions. Second operand has 92 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 29 states have internal predecessors, (32), 64 states have call successors, (64), 1 states have call predecessors, (64), 1 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2022-11-22 02:29:57,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:29:57,927 INFO L93 Difference]: Finished difference Result 144 states and 218 transitions. [2022-11-22 02:29:57,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-11-22 02:29:57,928 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 29 states have internal predecessors, (32), 64 states have call successors, (64), 1 states have call predecessors, (64), 1 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) Word has length 223 [2022-11-22 02:29:57,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:29:57,930 INFO L225 Difference]: With dead ends: 144 [2022-11-22 02:29:57,931 INFO L226 Difference]: Without dead ends: 142 [2022-11-22 02:29:57,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 672 GetRequests, 559 SyntacticMatches, 7 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1298 ImplicationChecksByTransitivity, 89.3s TimeCoverageRelationStatistics Valid=4872, Invalid=6684, Unknown=0, NotChecked=0, Total=11556 [2022-11-22 02:29:57,932 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 446 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 1126 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 1484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 1126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:29:57,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [515 Valid, 151 Invalid, 1484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 1126 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-22 02:29:57,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-11-22 02:29:57,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 125. [2022-11-22 02:29:57,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 51 states have (on average 1.196078431372549) internal successors, (61), 56 states have internal predecessors, (61), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2022-11-22 02:29:57,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 195 transitions. [2022-11-22 02:29:57,994 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 195 transitions. Word has length 223 [2022-11-22 02:29:57,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:29:57,995 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 195 transitions. [2022-11-22 02:29:57,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 29 states have internal predecessors, (32), 64 states have call successors, (64), 1 states have call predecessors, (64), 1 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2022-11-22 02:29:57,996 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 195 transitions. [2022-11-22 02:29:57,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-11-22 02:29:57,997 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:29:57,997 INFO L195 NwaCegarLoop]: trace histogram [65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:29:58,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-22 02:29:58,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:29:58,200 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-22 02:29:58,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:29:58,200 INFO L85 PathProgramCache]: Analyzing trace with hash -645642737, now seen corresponding path program 1 times [2022-11-22 02:29:58,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:29:58,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109317284] [2022-11-22 02:29:58,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:29:58,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:29:58,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:29:58,540 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 6 proven. 58 refuted. 0 times theorem prover too weak. 4096 trivial. 0 not checked. [2022-11-22 02:29:58,540 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:29:58,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109317284] [2022-11-22 02:29:58,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109317284] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:29:58,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476532840] [2022-11-22 02:29:58,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:29:58,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:29:58,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:29:58,550 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:29:58,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf24577-cacc-458d-8da2-7f4c0b102a67/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-22 02:29:58,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:29:58,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-22 02:29:58,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:29:59,057 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 6 proven. 58 refuted. 0 times theorem prover too weak. 4096 trivial. 0 not checked. [2022-11-22 02:29:59,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:29:59,393 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 6 proven. 58 refuted. 0 times theorem prover too weak. 4096 trivial. 0 not checked. [2022-11-22 02:29:59,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476532840] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:29:59,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1122204219] [2022-11-22 02:29:59,396 INFO L159 IcfgInterpreter]: Started Sifa with 99 locations of interest [2022-11-22 02:29:59,396 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:29:59,397 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:29:59,397 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:29:59,397 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:30:15,296 INFO L197 IcfgInterpreter]: Interpreting procedure assume with input of size 8 for LOIs [2022-11-22 02:30:15,298 INFO L180 IcfgInterpreter]: Interpretation finished