./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-industry-pattern/nested-3.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_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/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_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-industry-pattern/nested-3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/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_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/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 13e5ee77a02e52d8ba8ae9f3698472ae34be00d2574eddc823f2c8e804568236 --- 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 02:36:34,624 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:36:34,626 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:36:34,650 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:36:34,651 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:36:34,652 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:36:34,653 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:36:34,655 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:36:34,656 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:36:34,657 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:36:34,658 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:36:34,659 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:36:34,660 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:36:34,661 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:36:34,662 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:36:34,663 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:36:34,664 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:36:34,665 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:36:34,667 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:36:34,669 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:36:34,670 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:36:34,672 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:36:34,673 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:36:34,674 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:36:34,677 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:36:34,678 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:36:34,678 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:36:34,679 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:36:34,680 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:36:34,681 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:36:34,681 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:36:34,682 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:36:34,683 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:36:34,684 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:36:34,685 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:36:34,685 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:36:34,686 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:36:34,686 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:36:34,686 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:36:34,687 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:36:34,688 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:36:34,689 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-22 02:36:34,731 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:36:34,733 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:36:34,733 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:36:34,734 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:36:34,744 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:36:34,744 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:36:34,744 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:36:34,744 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:36:34,745 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:36:34,745 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:36:34,746 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:36:34,746 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:36:34,746 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:36:34,747 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:36:34,747 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:36:34,747 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:36:34,747 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:36:34,747 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:36:34,749 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:36:34,749 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 02:36:34,749 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 02:36:34,749 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:36:34,750 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 02:36:34,750 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:36:34,750 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:36:34,750 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:36:34,751 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:36:34,751 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-22 02:36:34,751 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 02:36:34,751 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:36:34,752 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:36:34,752 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:36:34,753 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:36:34,754 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:36:34,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:36:34,754 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:36:34,754 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:36:34,755 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:36:34,755 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:36:34,755 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:36:34,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:36:34,755 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:36:34,756 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:36:34,756 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_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13e5ee77a02e52d8ba8ae9f3698472ae34be00d2574eddc823f2c8e804568236 [2022-11-22 02:36:35,113 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:36:35,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:36:35,152 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:36:35,154 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:36:35,154 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:36:35,155 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/loop-industry-pattern/nested-3.c [2022-11-22 02:36:38,152 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:36:38,433 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:36:38,433 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/sv-benchmarks/c/loop-industry-pattern/nested-3.c [2022-11-22 02:36:38,439 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/bin/utaipan-g80aRyZoba/data/c2c514a91/f8a64ba4eae04349b3aec763a1c32d46/FLAG585f66a75 [2022-11-22 02:36:38,459 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/bin/utaipan-g80aRyZoba/data/c2c514a91/f8a64ba4eae04349b3aec763a1c32d46 [2022-11-22 02:36:38,464 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:36:38,466 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:36:38,470 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:36:38,470 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:36:38,476 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:36:38,476 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:36:38" (1/1) ... [2022-11-22 02:36:38,478 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27855eb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:36:38, skipping insertion in model container [2022-11-22 02:36:38,478 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:36:38" (1/1) ... [2022-11-22 02:36:38,485 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:36:38,501 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:36:38,637 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_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/sv-benchmarks/c/loop-industry-pattern/nested-3.c[404,417] [2022-11-22 02:36:38,650 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:36:38,660 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:36:38,672 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_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/sv-benchmarks/c/loop-industry-pattern/nested-3.c[404,417] [2022-11-22 02:36:38,677 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:36:38,690 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:36:38,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:36:38 WrapperNode [2022-11-22 02:36:38,691 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:36:38,693 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:36:38,693 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:36:38,693 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:36:38,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:36:38" (1/1) ... [2022-11-22 02:36:38,708 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:36:38" (1/1) ... [2022-11-22 02:36:38,726 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 66 [2022-11-22 02:36:38,727 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:36:38,727 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:36:38,728 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:36:38,728 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:36:38,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:36:38" (1/1) ... [2022-11-22 02:36:38,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:36:38" (1/1) ... [2022-11-22 02:36:38,738 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:36:38" (1/1) ... [2022-11-22 02:36:38,739 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:36:38" (1/1) ... [2022-11-22 02:36:38,742 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:36:38" (1/1) ... [2022-11-22 02:36:38,746 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:36:38" (1/1) ... [2022-11-22 02:36:38,747 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:36:38" (1/1) ... [2022-11-22 02:36:38,748 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:36:38" (1/1) ... [2022-11-22 02:36:38,750 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:36:38,751 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:36:38,751 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:36:38,752 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:36:38,753 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:36:38" (1/1) ... [2022-11-22 02:36:38,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:36:38,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:36:38,811 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:36:38,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:36:38,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:36:38,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:36:38,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:36:38,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:36:38,930 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:36:38,933 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:36:39,173 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:36:39,233 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:36:39,233 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-22 02:36:39,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:36:39 BoogieIcfgContainer [2022-11-22 02:36:39,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:36:39,245 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:36:39,245 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:36:39,248 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:36:39,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:36:38" (1/3) ... [2022-11-22 02:36:39,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a2a28f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:36:39, skipping insertion in model container [2022-11-22 02:36:39,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:36:38" (2/3) ... [2022-11-22 02:36:39,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a2a28f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:36:39, skipping insertion in model container [2022-11-22 02:36:39,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:36:39" (3/3) ... [2022-11-22 02:36:39,252 INFO L112 eAbstractionObserver]: Analyzing ICFG nested-3.c [2022-11-22 02:36:39,279 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:36:39,279 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-11-22 02:36:39,353 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:36:39,360 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;@7b14cf0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:36:39,361 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-11-22 02:36:39,365 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 35 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:36:39,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-22 02:36:39,372 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:36:39,372 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-22 02:36:39,373 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-22 02:36:39,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:36:39,382 INFO L85 PathProgramCache]: Analyzing trace with hash 3737635, now seen corresponding path program 1 times [2022-11-22 02:36:39,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:36:39,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202814125] [2022-11-22 02:36:39,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:36:39,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:36:39,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:36:39,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:36:39,686 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:36:39,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202814125] [2022-11-22 02:36:39,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202814125] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:36:39,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:36:39,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:36:39,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908683253] [2022-11-22 02:36:39,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:36:39,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:36:39,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:36:39,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:36:39,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:36:39,748 INFO L87 Difference]: Start difference. First operand has 36 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 35 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:36:39,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:36:39,845 INFO L93 Difference]: Finished difference Result 74 states and 87 transitions. [2022-11-22 02:36:39,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 02:36:39,848 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-22 02:36:39,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:36:39,857 INFO L225 Difference]: With dead ends: 74 [2022-11-22 02:36:39,857 INFO L226 Difference]: Without dead ends: 39 [2022-11-22 02:36:39,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:36:39,864 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 3 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:36:39,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 94 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:36:39,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-22 02:36:39,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2022-11-22 02:36:39,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 24 states have (on average 1.75) internal successors, (42), 37 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:36:39,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2022-11-22 02:36:39,900 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 4 [2022-11-22 02:36:39,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:36:39,900 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2022-11-22 02:36:39,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:36:39,901 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2022-11-22 02:36:39,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-22 02:36:39,902 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:36:39,902 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2022-11-22 02:36:39,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:36:39,903 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-22 02:36:39,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:36:39,903 INFO L85 PathProgramCache]: Analyzing trace with hash -321203601, now seen corresponding path program 1 times [2022-11-22 02:36:39,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:36:39,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238265073] [2022-11-22 02:36:39,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:36:39,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:36:39,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:36:39,975 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 02:36:39,975 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:36:39,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238265073] [2022-11-22 02:36:39,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238265073] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:36:39,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:36:39,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:36:39,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048350775] [2022-11-22 02:36:39,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:36:39,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:36:39,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:36:39,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:36:39,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:36:39,980 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:36:40,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:36:40,004 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2022-11-22 02:36:40,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:36:40,005 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-22 02:36:40,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:36:40,006 INFO L225 Difference]: With dead ends: 38 [2022-11-22 02:36:40,006 INFO L226 Difference]: Without dead ends: 37 [2022-11-22 02:36:40,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:36:40,008 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 2 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:36:40,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 62 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:36:40,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-22 02:36:40,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-11-22 02:36:40,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 36 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:36:40,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2022-11-22 02:36:40,021 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 7 [2022-11-22 02:36:40,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:36:40,022 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2022-11-22 02:36:40,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:36:40,024 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2022-11-22 02:36:40,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-22 02:36:40,026 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:36:40,027 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:36:40,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 02:36:40,027 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-22 02:36:40,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:36:40,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1367381496, now seen corresponding path program 1 times [2022-11-22 02:36:40,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:36:40,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697551170] [2022-11-22 02:36:40,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:36:40,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:36:40,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:36:40,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:36:40,155 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:36:40,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697551170] [2022-11-22 02:36:40,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697551170] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:36:40,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524019276] [2022-11-22 02:36:40,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:36:40,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:36:40,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:36:40,160 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:36:40,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 02:36:40,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:36:40,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 02:36:40,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:36:40,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:36:40,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:36:40,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:36:40,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524019276] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:36:40,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [991844239] [2022-11-22 02:36:40,458 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-22 02:36:40,458 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:36:40,462 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:36:40,468 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:36:40,468 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:36:40,979 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:36:41,531 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '307#(and (= |ULTIMATE.start_main_~b~0#1| 0) (< 2147483646 ~last~0) (<= |ULTIMATE.start_main_~c~0#1| 2147483647) (<= 200000 |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~st~0#1| 0) (= |ULTIMATE.start_main_~a~0#1| 0) |ULTIMATE.start_main_#t~short6#1| (= |#NULL.offset| 0) (<= ~last~0 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 02:36:41,531 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:36:41,531 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:36:41,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-22 02:36:41,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189382568] [2022-11-22 02:36:41,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:36:41,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-22 02:36:41,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:36:41,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-22 02:36:41,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2022-11-22 02:36:41,534 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 10 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:36:41,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:36:41,679 INFO L93 Difference]: Finished difference Result 79 states and 89 transitions. [2022-11-22 02:36:41,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-22 02:36:41,679 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-22 02:36:41,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:36:41,682 INFO L225 Difference]: With dead ends: 79 [2022-11-22 02:36:41,682 INFO L226 Difference]: Without dead ends: 43 [2022-11-22 02:36:41,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2022-11-22 02:36:41,687 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 14 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:36:41,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 118 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:36:41,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-22 02:36:41,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2022-11-22 02:36:41,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 40 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:36:41,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2022-11-22 02:36:41,699 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 8 [2022-11-22 02:36:41,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:36:41,700 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2022-11-22 02:36:41,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:36:41,700 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2022-11-22 02:36:41,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-22 02:36:41,702 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:36:41,703 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2022-11-22 02:36:41,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 02:36:41,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:36:41,910 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-22 02:36:41,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:36:41,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1367376979, now seen corresponding path program 1 times [2022-11-22 02:36:41,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:36:41,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747461068] [2022-11-22 02:36:41,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:36:41,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:36:41,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:36:42,039 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:36:42,040 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:36:42,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747461068] [2022-11-22 02:36:42,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747461068] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:36:42,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031514263] [2022-11-22 02:36:42,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:36:42,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:36:42,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:36:42,045 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:36:42,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 02:36:42,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:36:42,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-22 02:36:42,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:36:42,141 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:36:42,141 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:36:42,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031514263] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:36:42,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:36:42,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-22 02:36:42,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683667765] [2022-11-22 02:36:42,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:36:42,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:36:42,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:36:42,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:36:42,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:36:42,145 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:36:42,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:36:42,197 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2022-11-22 02:36:42,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:36:42,197 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-22 02:36:42,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:36:42,199 INFO L225 Difference]: With dead ends: 42 [2022-11-22 02:36:42,200 INFO L226 Difference]: Without dead ends: 41 [2022-11-22 02:36:42,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-22 02:36:42,203 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 36 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:36:42,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 58 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:36:42,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-22 02:36:42,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2022-11-22 02:36:42,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 39 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:36:42,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2022-11-22 02:36:42,217 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 8 [2022-11-22 02:36:42,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:36:42,218 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2022-11-22 02:36:42,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:36:42,221 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2022-11-22 02:36:42,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-22 02:36:42,221 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:36:42,221 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1] [2022-11-22 02:36:42,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 02:36:42,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:36:42,433 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-22 02:36:42,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:36:42,433 INFO L85 PathProgramCache]: Analyzing trace with hash -707037560, now seen corresponding path program 2 times [2022-11-22 02:36:42,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:36:42,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583920213] [2022-11-22 02:36:42,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:36:42,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:36:42,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:36:42,589 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:36:42,590 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:36:42,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583920213] [2022-11-22 02:36:42,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583920213] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:36:42,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558824617] [2022-11-22 02:36:42,592 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 02:36:42,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:36:42,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:36:42,594 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:36:42,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 02:36:42,655 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-22 02:36:42,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:36:42,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-22 02:36:42,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:36:42,704 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:36:42,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:36:42,806 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:36:42,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558824617] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:36:42,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1745789263] [2022-11-22 02:36:42,809 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-22 02:36:42,809 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:36:42,810 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:36:42,810 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:36:42,810 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:36:43,027 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:36:43,490 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '683#(and (= |ULTIMATE.start_main_~b~0#1| 0) (< 2147483646 ~last~0) (<= |ULTIMATE.start_main_~c~0#1| 2147483647) (<= 200000 |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~st~0#1| 0) (= |ULTIMATE.start_main_~a~0#1| 0) |ULTIMATE.start_main_#t~short6#1| (= |#NULL.offset| 0) (<= ~last~0 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 02:36:43,490 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:36:43,490 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:36:43,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-22 02:36:43,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918603158] [2022-11-22 02:36:43,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:36:43,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-22 02:36:43,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:36:43,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-22 02:36:43,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=480, Unknown=0, NotChecked=0, Total=600 [2022-11-22 02:36:43,492 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:36:43,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:36:43,638 INFO L93 Difference]: Finished difference Result 92 states and 104 transitions. [2022-11-22 02:36:43,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 02:36:43,639 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-22 02:36:43,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:36:43,639 INFO L225 Difference]: With dead ends: 92 [2022-11-22 02:36:43,639 INFO L226 Difference]: Without dead ends: 53 [2022-11-22 02:36:43,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=201, Invalid=729, Unknown=0, NotChecked=0, Total=930 [2022-11-22 02:36:43,641 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 26 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:36:43,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 175 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:36:43,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-22 02:36:43,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2022-11-22 02:36:43,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 40 states have (on average 1.4) internal successors, (56), 51 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:36:43,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2022-11-22 02:36:43,646 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 14 [2022-11-22 02:36:43,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:36:43,646 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2022-11-22 02:36:43,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:36:43,647 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2022-11-22 02:36:43,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-22 02:36:43,648 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:36:43,648 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1] [2022-11-22 02:36:43,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-22 02:36:43,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:36:43,858 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-22 02:36:43,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:36:43,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1454805112, now seen corresponding path program 3 times [2022-11-22 02:36:43,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:36:43,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999895877] [2022-11-22 02:36:43,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:36:43,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:36:43,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:36:44,167 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:36:44,167 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:36:44,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999895877] [2022-11-22 02:36:44,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999895877] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:36:44,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128391299] [2022-11-22 02:36:44,167 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 02:36:44,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:36:44,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:36:44,169 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:36:44,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 02:36:44,230 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 02:36:44,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:36:44,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-22 02:36:44,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:36:44,309 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:36:44,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:36:44,636 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:36:44,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128391299] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:36:44,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [826848360] [2022-11-22 02:36:44,638 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-22 02:36:44,638 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:36:44,638 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:36:44,638 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:36:44,638 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:36:44,802 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:36:45,403 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1057#(and (= |ULTIMATE.start_main_~b~0#1| 0) (< 2147483646 ~last~0) (<= |ULTIMATE.start_main_~c~0#1| 2147483647) (<= 200000 |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~st~0#1| 0) (= |ULTIMATE.start_main_~a~0#1| 0) |ULTIMATE.start_main_#t~short6#1| (= |#NULL.offset| 0) (<= ~last~0 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 02:36:45,403 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:36:45,403 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:36:45,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2022-11-22 02:36:45,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576628482] [2022-11-22 02:36:45,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:36:45,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-22 02:36:45,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:36:45,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-22 02:36:45,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=1296, Unknown=0, NotChecked=0, Total=1640 [2022-11-22 02:36:45,406 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand has 34 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 34 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:36:45,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:36:45,780 INFO L93 Difference]: Finished difference Result 128 states and 144 transitions. [2022-11-22 02:36:45,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-22 02:36:45,781 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 34 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-22 02:36:45,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:36:45,781 INFO L225 Difference]: With dead ends: 128 [2022-11-22 02:36:45,782 INFO L226 Difference]: Without dead ends: 77 [2022-11-22 02:36:45,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 866 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=697, Invalid=2273, Unknown=0, NotChecked=0, Total=2970 [2022-11-22 02:36:45,783 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 86 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:36:45,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 144 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:36:45,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-11-22 02:36:45,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2022-11-22 02:36:45,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 64 states have (on average 1.25) internal successors, (80), 75 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:36:45,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2022-11-22 02:36:45,790 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 26 [2022-11-22 02:36:45,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:36:45,791 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2022-11-22 02:36:45,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 34 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:36:45,791 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2022-11-22 02:36:45,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-22 02:36:45,793 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:36:45,793 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1] [2022-11-22 02:36:45,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 02:36:45,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-22 02:36:45,999 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-22 02:36:45,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:36:45,999 INFO L85 PathProgramCache]: Analyzing trace with hash -908271224, now seen corresponding path program 4 times [2022-11-22 02:36:46,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:36:46,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253077733] [2022-11-22 02:36:46,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:36:46,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:36:46,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:36:46,860 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:36:46,861 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:36:46,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253077733] [2022-11-22 02:36:46,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253077733] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:36:46,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103025242] [2022-11-22 02:36:46,861 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-22 02:36:46,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:36:46,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:36:46,862 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:36:46,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-22 02:36:46,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:36:46,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-22 02:36:46,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:36:47,069 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:36:47,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:36:48,131 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:36:48,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103025242] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:36:48,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1571144680] [2022-11-22 02:36:48,135 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-22 02:36:48,135 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:36:48,135 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:36:48,135 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:36:48,136 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:36:48,287 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:36:48,949 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1703#(and (= |ULTIMATE.start_main_~b~0#1| 0) (< 2147483646 ~last~0) (<= |ULTIMATE.start_main_~c~0#1| 2147483647) (<= 200000 |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~st~0#1| 0) (= |ULTIMATE.start_main_~a~0#1| 0) |ULTIMATE.start_main_#t~short6#1| (= |#NULL.offset| 0) (<= ~last~0 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 02:36:48,949 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:36:48,949 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:36:48,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 66 [2022-11-22 02:36:48,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373804521] [2022-11-22 02:36:48,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:36:48,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-11-22 02:36:48,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:36:48,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-11-22 02:36:48,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=4080, Unknown=0, NotChecked=0, Total=5256 [2022-11-22 02:36:48,953 INFO L87 Difference]: Start difference. First operand 76 states and 80 transitions. Second operand has 66 states, 66 states have (on average 1.5303030303030303) internal successors, (101), 66 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:36:49,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:36:49,989 INFO L93 Difference]: Finished difference Result 200 states and 224 transitions. [2022-11-22 02:36:49,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-11-22 02:36:49,990 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.5303030303030303) internal successors, (101), 66 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2022-11-22 02:36:49,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:36:49,991 INFO L225 Difference]: With dead ends: 200 [2022-11-22 02:36:49,991 INFO L226 Difference]: Without dead ends: 125 [2022-11-22 02:36:49,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2786 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2649, Invalid=7857, Unknown=0, NotChecked=0, Total=10506 [2022-11-22 02:36:49,996 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 162 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:36:49,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 175 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:36:49,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-11-22 02:36:50,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 124. [2022-11-22 02:36:50,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 112 states have (on average 1.1428571428571428) internal successors, (128), 123 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:36:50,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 128 transitions. [2022-11-22 02:36:50,006 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 128 transitions. Word has length 50 [2022-11-22 02:36:50,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:36:50,006 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 128 transitions. [2022-11-22 02:36:50,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.5303030303030303) internal successors, (101), 66 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:36:50,007 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 128 transitions. [2022-11-22 02:36:50,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-22 02:36:50,009 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:36:50,009 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1] [2022-11-22 02:36:50,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-22 02:36:50,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:36:50,216 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-22 02:36:50,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:36:50,216 INFO L85 PathProgramCache]: Analyzing trace with hash 2028062088, now seen corresponding path program 5 times [2022-11-22 02:36:50,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:36:50,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027866008] [2022-11-22 02:36:50,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:36:50,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:36:50,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:36:53,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 0 proven. 1426 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:36:53,045 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:36:53,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027866008] [2022-11-22 02:36:53,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027866008] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:36:53,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395300976] [2022-11-22 02:36:53,045 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 02:36:53,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:36:53,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:36:53,047 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:36:53,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-22 02:36:53,188 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 32 check-sat command(s) [2022-11-22 02:36:53,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:36:53,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-22 02:36:53,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:36:53,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 0 proven. 1426 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:36:53,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:36:57,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 0 proven. 1426 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:36:57,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395300976] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:36:57,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [231473160] [2022-11-22 02:36:57,118 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-22 02:36:57,118 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:36:57,118 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:36:57,119 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:36:57,119 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:36:57,221 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:36:57,950 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2893#(and (= |ULTIMATE.start_main_~b~0#1| 0) (< 2147483646 ~last~0) (<= |ULTIMATE.start_main_~c~0#1| 2147483647) (<= 200000 |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~st~0#1| 0) (= |ULTIMATE.start_main_~a~0#1| 0) |ULTIMATE.start_main_#t~short6#1| (= |#NULL.offset| 0) (<= ~last~0 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 02:36:57,951 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:36:57,951 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:36:57,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 130 [2022-11-22 02:36:57,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966630385] [2022-11-22 02:36:57,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:36:57,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2022-11-22 02:36:57,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:36:57,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2022-11-22 02:36:57,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4376, Invalid=14256, Unknown=0, NotChecked=0, Total=18632 [2022-11-22 02:36:57,960 INFO L87 Difference]: Start difference. First operand 124 states and 128 transitions. Second operand has 130 states, 130 states have (on average 1.5153846153846153) internal successors, (197), 130 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:37:01,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:37:01,172 INFO L93 Difference]: Finished difference Result 344 states and 384 transitions. [2022-11-22 02:37:01,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2022-11-22 02:37:01,172 INFO L78 Accepts]: Start accepts. Automaton has has 130 states, 130 states have (on average 1.5153846153846153) internal successors, (197), 130 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-22 02:37:01,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:37:01,174 INFO L225 Difference]: With dead ends: 344 [2022-11-22 02:37:01,174 INFO L226 Difference]: Without dead ends: 221 [2022-11-22 02:37:01,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9698 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=10393, Invalid=29009, Unknown=0, NotChecked=0, Total=39402 [2022-11-22 02:37:01,182 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 372 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:37:01,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 353 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 02:37:01,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-11-22 02:37:01,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 220. [2022-11-22 02:37:01,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 208 states have (on average 1.0769230769230769) internal successors, (224), 219 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:37:01,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 224 transitions. [2022-11-22 02:37:01,196 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 224 transitions. Word has length 98 [2022-11-22 02:37:01,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:37:01,196 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 224 transitions. [2022-11-22 02:37:01,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 130 states have (on average 1.5153846153846153) internal successors, (197), 130 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:37:01,197 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 224 transitions. [2022-11-22 02:37:01,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-11-22 02:37:01,199 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:37:01,200 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 63, 1, 1, 1, 1, 1] [2022-11-22 02:37:01,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-22 02:37:01,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:37:01,410 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-22 02:37:01,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:37:01,410 INFO L85 PathProgramCache]: Analyzing trace with hash -966554232, now seen corresponding path program 6 times [2022-11-22 02:37:01,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:37:01,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805124812] [2022-11-22 02:37:01,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:37:01,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:37:01,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:37:10,402 INFO L134 CoverageAnalysis]: Checked inductivity of 5922 backedges. 0 proven. 5922 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:37:10,403 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:37:10,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805124812] [2022-11-22 02:37:10,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805124812] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:37:10,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778606431] [2022-11-22 02:37:10,403 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 02:37:10,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:37:10,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:37:10,409 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:37:10,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-22 02:37:10,551 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 02:37:10,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:37:10,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 128 conjunts are in the unsatisfiable core [2022-11-22 02:37:10,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:37:11,005 INFO L134 CoverageAnalysis]: Checked inductivity of 5922 backedges. 0 proven. 5922 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:37:11,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:37:24,305 INFO L134 CoverageAnalysis]: Checked inductivity of 5922 backedges. 0 proven. 5922 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:37:24,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778606431] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:37:24,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [815157144] [2022-11-22 02:37:24,308 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-22 02:37:24,308 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:37:24,308 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:37:24,308 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:37:24,309 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:37:24,449 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:37:25,493 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5171#(and (= |ULTIMATE.start_main_~b~0#1| 0) (< 2147483646 ~last~0) (<= |ULTIMATE.start_main_~c~0#1| 2147483647) (<= 200000 |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~st~0#1| 0) (= |ULTIMATE.start_main_~a~0#1| 0) |ULTIMATE.start_main_#t~short6#1| (= |#NULL.offset| 0) (<= ~last~0 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 02:37:25,493 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:37:25,493 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:37:25,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [129, 129, 129] total 258 [2022-11-22 02:37:25,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775837346] [2022-11-22 02:37:25,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:37:25,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 258 states [2022-11-22 02:37:25,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:37:25,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 258 interpolants. [2022-11-22 02:37:25,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16920, Invalid=53040, Unknown=0, NotChecked=0, Total=69960 [2022-11-22 02:37:25,506 INFO L87 Difference]: Start difference. First operand 220 states and 224 transitions. Second operand has 258 states, 258 states have (on average 1.5077519379844961) internal successors, (389), 258 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:37:38,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:37:38,329 INFO L93 Difference]: Finished difference Result 632 states and 704 transitions. [2022-11-22 02:37:38,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 255 states. [2022-11-22 02:37:38,329 INFO L78 Accepts]: Start accepts. Automaton has has 258 states, 258 states have (on average 1.5077519379844961) internal successors, (389), 258 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 194 [2022-11-22 02:37:38,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:37:38,332 INFO L225 Difference]: With dead ends: 632 [2022-11-22 02:37:38,332 INFO L226 Difference]: Without dead ends: 413 [2022-11-22 02:37:38,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 835 GetRequests, 446 SyntacticMatches, 0 SemanticMatches, 389 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35810 ImplicationChecksByTransitivity, 28.6s TimeCoverageRelationStatistics Valid=41241, Invalid=111249, Unknown=0, NotChecked=0, Total=152490 [2022-11-22 02:37:38,343 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 1008 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1008 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:37:38,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1008 Valid, 260 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 02:37:38,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2022-11-22 02:37:38,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 412. [2022-11-22 02:37:38,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 400 states have (on average 1.04) internal successors, (416), 411 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:37:38,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 416 transitions. [2022-11-22 02:37:38,363 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 416 transitions. Word has length 194 [2022-11-22 02:37:38,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:37:38,364 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 416 transitions. [2022-11-22 02:37:38,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 258 states, 258 states have (on average 1.5077519379844961) internal successors, (389), 258 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:37:38,365 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 416 transitions. [2022-11-22 02:37:38,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2022-11-22 02:37:38,382 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:37:38,382 INFO L195 NwaCegarLoop]: trace histogram [127, 127, 127, 1, 1, 1, 1, 1] [2022-11-22 02:37:38,388 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-22 02:37:38,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:37:38,588 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-22 02:37:38,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:37:38,589 INFO L85 PathProgramCache]: Analyzing trace with hash -548987512, now seen corresponding path program 7 times [2022-11-22 02:37:38,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:37:38,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310445377] [2022-11-22 02:37:38,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:37:38,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:37:38,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:38:10,937 INFO L134 CoverageAnalysis]: Checked inductivity of 24130 backedges. 0 proven. 24130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:38:10,937 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:38:10,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310445377] [2022-11-22 02:38:10,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310445377] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:38:10,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608737617] [2022-11-22 02:38:10,937 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-22 02:38:10,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:38:10,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:38:10,939 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:38:10,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-22 02:38:11,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:38:11,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 1059 conjuncts, 256 conjunts are in the unsatisfiable core [2022-11-22 02:38:11,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:38:11,916 INFO L134 CoverageAnalysis]: Checked inductivity of 24130 backedges. 0 proven. 24130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:38:11,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:39:04,324 INFO L134 CoverageAnalysis]: Checked inductivity of 24130 backedges. 0 proven. 24130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:39:04,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608737617] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:39:04,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1351176285] [2022-11-22 02:39:04,327 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-22 02:39:04,327 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:39:04,327 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:39:04,327 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:39:04,328 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:39:04,456 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:39:06,150 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9625#(and (= |ULTIMATE.start_main_~b~0#1| 0) (< 2147483646 ~last~0) (<= |ULTIMATE.start_main_~c~0#1| 2147483647) (<= 200000 |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~st~0#1| 0) (= |ULTIMATE.start_main_~a~0#1| 0) |ULTIMATE.start_main_#t~short6#1| (= |#NULL.offset| 0) (<= ~last~0 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 02:39:06,150 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:39:06,150 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:39:06,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [257, 257, 257] total 514 [2022-11-22 02:39:06,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935604837] [2022-11-22 02:39:06,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:39:06,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 514 states [2022-11-22 02:39:06,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:39:06,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 514 interpolants. [2022-11-22 02:39:06,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66584, Invalid=204336, Unknown=0, NotChecked=0, Total=270920 [2022-11-22 02:39:06,173 INFO L87 Difference]: Start difference. First operand 412 states and 416 transitions. Second operand has 514 states, 514 states have (on average 1.5038910505836576) internal successors, (773), 514 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:40:12,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:40:12,826 INFO L93 Difference]: Finished difference Result 1208 states and 1344 transitions. [2022-11-22 02:40:12,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 511 states. [2022-11-22 02:40:12,827 INFO L78 Accepts]: Start accepts. Automaton has has 514 states, 514 states have (on average 1.5038910505836576) internal successors, (773), 514 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 386 [2022-11-22 02:40:12,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:40:12,830 INFO L225 Difference]: With dead ends: 1208 [2022-11-22 02:40:12,830 INFO L226 Difference]: Without dead ends: 797 [2022-11-22 02:40:12,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1667 GetRequests, 894 SyntacticMatches, 0 SemanticMatches, 773 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137186 ImplicationChecksByTransitivity, 110.2s TimeCoverageRelationStatistics Valid=164377, Invalid=435473, Unknown=0, NotChecked=0, Total=599850 [2022-11-22 02:40:12,859 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 2320 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 1351 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2320 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 1484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:40:12,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2320 Valid, 457 Invalid, 1484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1351 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-22 02:40:12,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2022-11-22 02:40:12,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 796. [2022-11-22 02:40:12,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 784 states have (on average 1.0204081632653061) internal successors, (800), 795 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:40:12,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 800 transitions. [2022-11-22 02:40:12,891 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 800 transitions. Word has length 386 [2022-11-22 02:40:12,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:40:12,892 INFO L495 AbstractCegarLoop]: Abstraction has 796 states and 800 transitions. [2022-11-22 02:40:12,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 514 states, 514 states have (on average 1.5038910505836576) internal successors, (773), 514 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:40:12,894 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 800 transitions. [2022-11-22 02:40:12,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 771 [2022-11-22 02:40:12,917 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:40:12,918 INFO L195 NwaCegarLoop]: trace histogram [255, 255, 255, 1, 1, 1, 1, 1] [2022-11-22 02:40:12,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-22 02:40:13,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:40:13,130 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-22 02:40:13,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:40:13,131 INFO L85 PathProgramCache]: Analyzing trace with hash 143539592, now seen corresponding path program 8 times [2022-11-22 02:40:13,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:40:13,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660065521] [2022-11-22 02:40:13,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:40:13,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:40:14,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:42:42,189 INFO L134 CoverageAnalysis]: Checked inductivity of 97410 backedges. 0 proven. 97410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:42:42,189 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:42:42,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660065521] [2022-11-22 02:42:42,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660065521] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:42:42,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735391017] [2022-11-22 02:42:42,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 02:42:42,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:42:42,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:42:42,197 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:42:42,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92e2e2a-9ece-4dc7-99ec-6cd45d145422/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-22 02:42:45,436 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 256 check-sat command(s) [2022-11-22 02:42:45,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:42:45,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 2083 conjuncts, 512 conjunts are in the unsatisfiable core [2022-11-22 02:42:45,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:42:46,955 INFO L134 CoverageAnalysis]: Checked inductivity of 97410 backedges. 0 proven. 97410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:42:46,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:46:18,738 INFO L134 CoverageAnalysis]: Checked inductivity of 97410 backedges. 0 proven. 97410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:46:18,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735391017] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:46:18,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1431700] [2022-11-22 02:46:18,740 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-22 02:46:18,741 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:46:18,741 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:46:18,741 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:46:18,741 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:46:18,854 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:46:22,142 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '18431#(and (= |ULTIMATE.start_main_~b~0#1| 0) (< 2147483646 ~last~0) (<= |ULTIMATE.start_main_~c~0#1| 2147483647) (<= 200000 |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~st~0#1| 0) (= |ULTIMATE.start_main_~a~0#1| 0) |ULTIMATE.start_main_#t~short6#1| (= |#NULL.offset| 0) (<= ~last~0 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 02:46:22,142 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:46:22,142 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:46:22,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [513, 513, 513] total 1026 [2022-11-22 02:46:22,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521439469] [2022-11-22 02:46:22,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:46:22,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 1026 states [2022-11-22 02:46:22,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:46:22,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 1026 interpolants. [2022-11-22 02:46:22,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264216, Invalid=801840, Unknown=0, NotChecked=0, Total=1066056 [2022-11-22 02:46:22,226 INFO L87 Difference]: Start difference. First operand 796 states and 800 transitions. Second operand has 1026 states, 1026 states have (on average 1.5019493177387915) internal successors, (1541), 1026 states have internal predecessors, (1541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)