./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 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_c93c85a5-7d25-4157-b92d-5b71799de511/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c93c85a5-7d25-4157-b92d-5b71799de511/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c93c85a5-7d25-4157-b92d-5b71799de511/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c93c85a5-7d25-4157-b92d-5b71799de511/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c93c85a5-7d25-4157-b92d-5b71799de511/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c93c85a5-7d25-4157-b92d-5b71799de511/bin/utaipan-gh47qXpMRh --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 963498115a8eca6e92c68ab7fa8168826446f05b9b398350c3ee0745adf1bb45 --- 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-2329fc7 [2022-12-14 04:58:36,672 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 04:58:36,674 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 04:58:36,691 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 04:58:36,692 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 04:58:36,693 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 04:58:36,694 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 04:58:36,695 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 04:58:36,696 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 04:58:36,697 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 04:58:36,698 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 04:58:36,699 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 04:58:36,699 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 04:58:36,700 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 04:58:36,701 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 04:58:36,702 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 04:58:36,703 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 04:58:36,704 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 04:58:36,705 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 04:58:36,707 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 04:58:36,708 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 04:58:36,709 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 04:58:36,710 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 04:58:36,711 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 04:58:36,714 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 04:58:36,715 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 04:58:36,715 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 04:58:36,716 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 04:58:36,716 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 04:58:36,717 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 04:58:36,717 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 04:58:36,718 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 04:58:36,719 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 04:58:36,719 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 04:58:36,720 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 04:58:36,720 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 04:58:36,721 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 04:58:36,721 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 04:58:36,721 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 04:58:36,722 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 04:58:36,722 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 04:58:36,723 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c93c85a5-7d25-4157-b92d-5b71799de511/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-12-14 04:58:36,742 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 04:58:36,742 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 04:58:36,743 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 04:58:36,743 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 04:58:36,743 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 04:58:36,744 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 04:58:36,744 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 04:58:36,749 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 04:58:36,750 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 04:58:36,750 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 04:58:36,750 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 04:58:36,750 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 04:58:36,750 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 04:58:36,751 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 04:58:36,751 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 04:58:36,751 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 04:58:36,751 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 04:58:36,751 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 04:58:36,752 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 04:58:36,752 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 04:58:36,753 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 04:58:36,753 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 04:58:36,753 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 04:58:36,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 04:58:36,753 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 04:58:36,754 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 04:58:36,754 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 04:58:36,754 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 04:58:36,754 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 04:58:36,754 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 04:58:36,755 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 04:58:36,755 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 04:58:36,755 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 04:58:36,755 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 04:58:36,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 04:58:36,756 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 04:58:36,756 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 04:58:36,756 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 04:58:36,756 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 04:58:36,757 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 04:58:36,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 04:58:36,757 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 04:58:36,757 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 04:58:36,757 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_c93c85a5-7d25-4157-b92d-5b71799de511/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c93c85a5-7d25-4157-b92d-5b71799de511/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 963498115a8eca6e92c68ab7fa8168826446f05b9b398350c3ee0745adf1bb45 [2022-12-14 04:58:36,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 04:58:36,949 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 04:58:36,951 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 04:58:36,952 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 04:58:36,952 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 04:58:36,953 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c93c85a5-7d25-4157-b92d-5b71799de511/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i [2022-12-14 04:58:39,495 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 04:58:39,702 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 04:58:39,703 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c93c85a5-7d25-4157-b92d-5b71799de511/sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i [2022-12-14 04:58:39,715 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c93c85a5-7d25-4157-b92d-5b71799de511/bin/utaipan-gh47qXpMRh/data/13bc0f60e/6399c4316a694844baac2db39fa7641d/FLAGdfa78b5bc [2022-12-14 04:58:39,726 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c93c85a5-7d25-4157-b92d-5b71799de511/bin/utaipan-gh47qXpMRh/data/13bc0f60e/6399c4316a694844baac2db39fa7641d [2022-12-14 04:58:39,727 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 04:58:39,728 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 04:58:39,729 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 04:58:39,729 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 04:58:39,732 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 04:58:39,733 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:58:39" (1/1) ... [2022-12-14 04:58:39,733 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24b18bd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:58:39, skipping insertion in model container [2022-12-14 04:58:39,733 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:58:39" (1/1) ... [2022-12-14 04:58:39,739 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 04:58:39,762 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 04:58:39,974 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_c93c85a5-7d25-4157-b92d-5b71799de511/sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i[30540,30553] [2022-12-14 04:58:39,978 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 04:58:39,986 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 04:58:40,010 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_c93c85a5-7d25-4157-b92d-5b71799de511/sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i[30540,30553] [2022-12-14 04:58:40,013 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 04:58:40,033 INFO L208 MainTranslator]: Completed translation [2022-12-14 04:58:40,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:58:40 WrapperNode [2022-12-14 04:58:40,034 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 04:58:40,034 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 04:58:40,034 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 04:58:40,034 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 04:58:40,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:58:40" (1/1) ... [2022-12-14 04:58:40,047 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:58:40" (1/1) ... [2022-12-14 04:58:40,061 INFO L138 Inliner]: procedures = 171, calls = 24, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 86 [2022-12-14 04:58:40,062 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 04:58:40,062 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 04:58:40,062 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 04:58:40,062 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 04:58:40,068 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:58:40" (1/1) ... [2022-12-14 04:58:40,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:58:40" (1/1) ... [2022-12-14 04:58:40,070 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:58:40" (1/1) ... [2022-12-14 04:58:40,070 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:58:40" (1/1) ... [2022-12-14 04:58:40,073 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:58:40" (1/1) ... [2022-12-14 04:58:40,076 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:58:40" (1/1) ... [2022-12-14 04:58:40,077 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:58:40" (1/1) ... [2022-12-14 04:58:40,078 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:58:40" (1/1) ... [2022-12-14 04:58:40,079 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 04:58:40,080 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 04:58:40,080 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 04:58:40,080 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 04:58:40,080 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:58:40" (1/1) ... [2022-12-14 04:58:40,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 04:58:40,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c93c85a5-7d25-4157-b92d-5b71799de511/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:58:40,103 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c93c85a5-7d25-4157-b92d-5b71799de511/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 04:58:40,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c93c85a5-7d25-4157-b92d-5b71799de511/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 04:58:40,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 04:58:40,137 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-12-14 04:58:40,137 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-12-14 04:58:40,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 04:58:40,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 04:58:40,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 04:58:40,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 04:58:40,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 04:58:40,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 04:58:40,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 04:58:40,140 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-14 04:58:40,237 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 04:58:40,239 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 04:58:40,391 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 04:58:40,422 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 04:58:40,422 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 04:58:40,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:58:40 BoogieIcfgContainer [2022-12-14 04:58:40,424 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 04:58:40,426 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 04:58:40,426 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 04:58:40,429 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 04:58:40,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 04:58:39" (1/3) ... [2022-12-14 04:58:40,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b719f26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:58:40, skipping insertion in model container [2022-12-14 04:58:40,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:58:40" (2/3) ... [2022-12-14 04:58:40,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b719f26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:58:40, skipping insertion in model container [2022-12-14 04:58:40,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:58:40" (3/3) ... [2022-12-14 04:58:40,431 INFO L112 eAbstractionObserver]: Analyzing ICFG 11_fmaxsymopt.i [2022-12-14 04:58:40,438 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-14 04:58:40,445 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 04:58:40,446 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-12-14 04:58:40,446 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-14 04:58:40,490 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-14 04:58:40,520 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 04:58:40,538 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 92 transitions, 189 flow [2022-12-14 04:58:40,540 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 87 places, 92 transitions, 189 flow [2022-12-14 04:58:40,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 92 transitions, 189 flow [2022-12-14 04:58:40,581 INFO L130 PetriNetUnfolder]: 9/103 cut-off events. [2022-12-14 04:58:40,581 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-14 04:58:40,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 103 events. 9/103 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 100 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 67. Up to 4 conditions per place. [2022-12-14 04:58:40,588 INFO L119 LiptonReduction]: Number of co-enabled transitions 1512 [2022-12-14 04:58:42,896 INFO L134 LiptonReduction]: Checked pairs total: 1334 [2022-12-14 04:58:42,897 INFO L136 LiptonReduction]: Total number of compositions: 107 [2022-12-14 04:58:42,902 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 15 places, 13 transitions, 31 flow [2022-12-14 04:58:42,911 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 37 states, 28 states have (on average 2.2857142857142856) internal successors, (64), 36 states have internal predecessors, (64), 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) [2022-12-14 04:58:42,923 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 04:58:42,927 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;@6eb1d5d0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 04:58:42,927 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-12-14 04:58:42,929 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 28 states have (on average 2.2857142857142856) internal successors, (64), 36 states have internal predecessors, (64), 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) [2022-12-14 04:58:42,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 04:58:42,932 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:58:42,932 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 04:58:42,933 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-12-14 04:58:42,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:58:42,936 INFO L85 PathProgramCache]: Analyzing trace with hash 434829698, now seen corresponding path program 1 times [2022-12-14 04:58:42,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:58:42,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672624173] [2022-12-14 04:58:42,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:58:42,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:58:43,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:58:43,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:58:43,164 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:58:43,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672624173] [2022-12-14 04:58:43,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672624173] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:58:43,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:58:43,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 04:58:43,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798358506] [2022-12-14 04:58:43,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:58:43,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:58:43,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:58:43,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:58:43,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:58:43,191 INFO L87 Difference]: Start difference. First operand has 37 states, 28 states have (on average 2.2857142857142856) internal successors, (64), 36 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:58:43,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:58:43,218 INFO L93 Difference]: Finished difference Result 23 states and 38 transitions. [2022-12-14 04:58:43,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:58:43,220 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-14 04:58:43,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:58:43,226 INFO L225 Difference]: With dead ends: 23 [2022-12-14 04:58:43,226 INFO L226 Difference]: Without dead ends: 23 [2022-12-14 04:58:43,226 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 [2022-12-14 04:58:43,229 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 7 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 04:58:43,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 3 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 04:58:43,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-12-14 04:58:43,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-12-14 04:58:43,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 20 states have (on average 1.9) internal successors, (38), 22 states have internal predecessors, (38), 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) [2022-12-14 04:58:43,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 38 transitions. [2022-12-14 04:58:43,251 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 38 transitions. Word has length 5 [2022-12-14 04:58:43,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:58:43,251 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 38 transitions. [2022-12-14 04:58:43,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:58:43,252 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 38 transitions. [2022-12-14 04:58:43,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 04:58:43,252 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:58:43,252 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 04:58:43,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 04:58:43,252 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-12-14 04:58:43,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:58:43,253 INFO L85 PathProgramCache]: Analyzing trace with hash 434829767, now seen corresponding path program 1 times [2022-12-14 04:58:43,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:58:43,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426701747] [2022-12-14 04:58:43,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:58:43,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:58:43,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:58:43,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:58:43,330 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:58:43,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426701747] [2022-12-14 04:58:43,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426701747] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:58:43,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:58:43,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 04:58:43,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416137910] [2022-12-14 04:58:43,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:58:43,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:58:43,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:58:43,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:58:43,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:58:43,333 INFO L87 Difference]: Start difference. First operand 23 states and 38 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:58:43,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:58:43,347 INFO L93 Difference]: Finished difference Result 19 states and 31 transitions. [2022-12-14 04:58:43,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:58:43,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-14 04:58:43,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:58:43,348 INFO L225 Difference]: With dead ends: 19 [2022-12-14 04:58:43,349 INFO L226 Difference]: Without dead ends: 19 [2022-12-14 04:58:43,349 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 [2022-12-14 04:58:43,350 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 6 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 04:58:43,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 04:58:43,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-12-14 04:58:43,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-12-14 04:58:43,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 18 states have internal predecessors, (31), 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) [2022-12-14 04:58:43,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 31 transitions. [2022-12-14 04:58:43,354 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 31 transitions. Word has length 5 [2022-12-14 04:58:43,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:58:43,354 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 31 transitions. [2022-12-14 04:58:43,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:58:43,355 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 31 transitions. [2022-12-14 04:58:43,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 04:58:43,355 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:58:43,355 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 04:58:43,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 04:58:43,356 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-12-14 04:58:43,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:58:43,356 INFO L85 PathProgramCache]: Analyzing trace with hash 434829833, now seen corresponding path program 1 times [2022-12-14 04:58:43,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:58:43,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087579514] [2022-12-14 04:58:43,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:58:43,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:58:43,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:58:43,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:58:43,435 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:58:43,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087579514] [2022-12-14 04:58:43,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087579514] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:58:43,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:58:43,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 04:58:43,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56670884] [2022-12-14 04:58:43,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:58:43,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:58:43,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:58:43,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:58:43,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:58:43,437 INFO L87 Difference]: Start difference. First operand 19 states and 31 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:58:43,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:58:43,451 INFO L93 Difference]: Finished difference Result 15 states and 24 transitions. [2022-12-14 04:58:43,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:58:43,451 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-14 04:58:43,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:58:43,451 INFO L225 Difference]: With dead ends: 15 [2022-12-14 04:58:43,451 INFO L226 Difference]: Without dead ends: 15 [2022-12-14 04:58:43,452 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 [2022-12-14 04:58:43,452 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 4 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 04:58:43,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 3 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 04:58:43,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-12-14 04:58:43,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-12-14 04:58:43,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:58:43,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 24 transitions. [2022-12-14 04:58:43,454 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 24 transitions. Word has length 5 [2022-12-14 04:58:43,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:58:43,454 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 24 transitions. [2022-12-14 04:58:43,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:58:43,455 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 24 transitions. [2022-12-14 04:58:43,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 04:58:43,455 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:58:43,455 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-12-14 04:58:43,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 04:58:43,455 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-12-14 04:58:43,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:58:43,456 INFO L85 PathProgramCache]: Analyzing trace with hash 594745110, now seen corresponding path program 1 times [2022-12-14 04:58:43,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:58:43,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954969036] [2022-12-14 04:58:43,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:58:43,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:58:43,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 04:58:43,463 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 04:58:43,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 04:58:43,483 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 04:58:43,483 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 04:58:43,484 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2022-12-14 04:58:43,486 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 9 remaining) [2022-12-14 04:58:43,486 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 9 remaining) [2022-12-14 04:58:43,486 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 9 remaining) [2022-12-14 04:58:43,486 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 9 remaining) [2022-12-14 04:58:43,486 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 9 remaining) [2022-12-14 04:58:43,486 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 9 remaining) [2022-12-14 04:58:43,487 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 9 remaining) [2022-12-14 04:58:43,487 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 9 remaining) [2022-12-14 04:58:43,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 04:58:43,488 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-12-14 04:58:43,490 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-14 04:58:43,490 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-14 04:58:43,510 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-14 04:58:43,512 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 04:58:43,512 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 147 transitions, 306 flow [2022-12-14 04:58:43,512 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 137 places, 147 transitions, 306 flow [2022-12-14 04:58:43,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 147 transitions, 306 flow [2022-12-14 04:58:43,538 INFO L130 PetriNetUnfolder]: 17/171 cut-off events. [2022-12-14 04:58:43,538 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-14 04:58:43,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 171 events. 17/171 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 323 event pairs, 0 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 121. Up to 6 conditions per place. [2022-12-14 04:58:43,548 INFO L119 LiptonReduction]: Number of co-enabled transitions 8964 [2022-12-14 04:58:46,401 INFO L134 LiptonReduction]: Checked pairs total: 12026 [2022-12-14 04:58:46,401 INFO L136 LiptonReduction]: Total number of compositions: 159 [2022-12-14 04:58:46,402 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 33 places, 34 transitions, 80 flow [2022-12-14 04:58:46,430 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 754 states, 701 states have (on average 3.3338088445078458) internal successors, (2337), 753 states have internal predecessors, (2337), 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) [2022-12-14 04:58:46,431 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 04:58:46,431 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;@6eb1d5d0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 04:58:46,431 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-12-14 04:58:46,433 INFO L276 IsEmpty]: Start isEmpty. Operand has 754 states, 701 states have (on average 3.3338088445078458) internal successors, (2337), 753 states have internal predecessors, (2337), 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) [2022-12-14 04:58:46,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 04:58:46,433 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:58:46,433 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 04:58:46,433 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-14 04:58:46,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:58:46,434 INFO L85 PathProgramCache]: Analyzing trace with hash 785241056, now seen corresponding path program 1 times [2022-12-14 04:58:46,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:58:46,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131173560] [2022-12-14 04:58:46,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:58:46,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:58:46,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:58:46,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:58:46,476 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:58:46,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131173560] [2022-12-14 04:58:46,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131173560] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:58:46,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:58:46,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 04:58:46,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103328961] [2022-12-14 04:58:46,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:58:46,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:58:46,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:58:46,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:58:46,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:58:46,479 INFO L87 Difference]: Start difference. First operand has 754 states, 701 states have (on average 3.3338088445078458) internal successors, (2337), 753 states have internal predecessors, (2337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:58:46,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:58:46,521 INFO L93 Difference]: Finished difference Result 489 states and 1434 transitions. [2022-12-14 04:58:46,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:58:46,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-14 04:58:46,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:58:46,526 INFO L225 Difference]: With dead ends: 489 [2022-12-14 04:58:46,526 INFO L226 Difference]: Without dead ends: 489 [2022-12-14 04:58:46,526 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 [2022-12-14 04:58:46,527 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 25 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 04:58:46,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 24 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 04:58:46,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2022-12-14 04:58:46,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 489. [2022-12-14 04:58:46,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 477 states have (on average 3.006289308176101) internal successors, (1434), 488 states have internal predecessors, (1434), 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) [2022-12-14 04:58:46,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 1434 transitions. [2022-12-14 04:58:46,551 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 1434 transitions. Word has length 5 [2022-12-14 04:58:46,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:58:46,552 INFO L495 AbstractCegarLoop]: Abstraction has 489 states and 1434 transitions. [2022-12-14 04:58:46,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:58:46,552 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 1434 transitions. [2022-12-14 04:58:46,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 04:58:46,552 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:58:46,552 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 04:58:46,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 04:58:46,552 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-14 04:58:46,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:58:46,553 INFO L85 PathProgramCache]: Analyzing trace with hash 785241207, now seen corresponding path program 1 times [2022-12-14 04:58:46,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:58:46,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979280427] [2022-12-14 04:58:46,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:58:46,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:58:46,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:58:46,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:58:46,610 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:58:46,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979280427] [2022-12-14 04:58:46,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979280427] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:58:46,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:58:46,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 04:58:46,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483862197] [2022-12-14 04:58:46,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:58:46,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:58:46,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:58:46,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:58:46,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:58:46,611 INFO L87 Difference]: Start difference. First operand 489 states and 1434 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:58:46,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:58:46,660 INFO L93 Difference]: Finished difference Result 543 states and 1587 transitions. [2022-12-14 04:58:46,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:58:46,661 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-14 04:58:46,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:58:46,667 INFO L225 Difference]: With dead ends: 543 [2022-12-14 04:58:46,667 INFO L226 Difference]: Without dead ends: 543 [2022-12-14 04:58:46,668 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 [2022-12-14 04:58:46,669 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 16 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 04:58:46,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 28 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 04:58:46,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2022-12-14 04:58:46,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 543. [2022-12-14 04:58:46,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 531 states have (on average 2.9887005649717513) internal successors, (1587), 542 states have internal predecessors, (1587), 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) [2022-12-14 04:58:46,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 1587 transitions. [2022-12-14 04:58:46,687 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 1587 transitions. Word has length 5 [2022-12-14 04:58:46,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:58:46,688 INFO L495 AbstractCegarLoop]: Abstraction has 543 states and 1587 transitions. [2022-12-14 04:58:46,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:58:46,688 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 1587 transitions. [2022-12-14 04:58:46,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 04:58:46,688 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:58:46,688 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 04:58:46,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 04:58:46,688 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-14 04:58:46,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:58:46,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1427325630, now seen corresponding path program 1 times [2022-12-14 04:58:46,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:58:46,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275896914] [2022-12-14 04:58:46,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:58:46,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:58:46,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:58:46,711 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:58:46,711 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:58:46,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275896914] [2022-12-14 04:58:46,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275896914] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:58:46,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:58:46,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 04:58:46,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985003689] [2022-12-14 04:58:46,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:58:46,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:58:46,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:58:46,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:58:46,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:58:46,713 INFO L87 Difference]: Start difference. First operand 543 states and 1587 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:58:46,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:58:46,762 INFO L93 Difference]: Finished difference Result 489 states and 1434 transitions. [2022-12-14 04:58:46,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:58:46,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-12-14 04:58:46,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:58:46,765 INFO L225 Difference]: With dead ends: 489 [2022-12-14 04:58:46,765 INFO L226 Difference]: Without dead ends: 489 [2022-12-14 04:58:46,765 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 [2022-12-14 04:58:46,766 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 23 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 04:58:46,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 25 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 04:58:46,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2022-12-14 04:58:46,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 489. [2022-12-14 04:58:46,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 481 states have (on average 2.9812889812889813) internal successors, (1434), 488 states have internal predecessors, (1434), 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) [2022-12-14 04:58:46,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 1434 transitions. [2022-12-14 04:58:46,778 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 1434 transitions. Word has length 6 [2022-12-14 04:58:46,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:58:46,778 INFO L495 AbstractCegarLoop]: Abstraction has 489 states and 1434 transitions. [2022-12-14 04:58:46,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:58:46,779 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 1434 transitions. [2022-12-14 04:58:46,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 04:58:46,779 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:58:46,779 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 04:58:46,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 04:58:46,779 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-14 04:58:46,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:58:46,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1427325820, now seen corresponding path program 1 times [2022-12-14 04:58:46,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:58:46,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601208399] [2022-12-14 04:58:46,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:58:46,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:58:46,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:58:46,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:58:46,808 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:58:46,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601208399] [2022-12-14 04:58:46,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601208399] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:58:46,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437785067] [2022-12-14 04:58:46,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:58:46,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:58:46,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c93c85a5-7d25-4157-b92d-5b71799de511/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:58:46,810 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c93c85a5-7d25-4157-b92d-5b71799de511/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:58:46,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c93c85a5-7d25-4157-b92d-5b71799de511/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 04:58:46,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:58:46,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 04:58:46,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:58:46,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:58:46,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:58:46,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:58:46,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437785067] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 04:58:46,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 04:58:46,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 6 [2022-12-14 04:58:46,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974107159] [2022-12-14 04:58:46,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:58:46,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 04:58:46,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:58:46,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 04:58:46,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 04:58:46,925 INFO L87 Difference]: Start difference. First operand 489 states and 1434 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:58:46,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:58:46,974 INFO L93 Difference]: Finished difference Result 435 states and 1281 transitions. [2022-12-14 04:58:46,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:58:46,975 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-12-14 04:58:46,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:58:46,979 INFO L225 Difference]: With dead ends: 435 [2022-12-14 04:58:46,979 INFO L226 Difference]: Without dead ends: 435 [2022-12-14 04:58:46,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 04:58:46,980 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 22 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 04:58:46,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 31 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 04:58:46,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2022-12-14 04:58:46,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 435. [2022-12-14 04:58:46,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 431 states have (on average 2.97215777262181) internal successors, (1281), 434 states have internal predecessors, (1281), 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) [2022-12-14 04:58:46,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 1281 transitions. [2022-12-14 04:58:46,997 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 1281 transitions. Word has length 6 [2022-12-14 04:58:46,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:58:46,997 INFO L495 AbstractCegarLoop]: Abstraction has 435 states and 1281 transitions. [2022-12-14 04:58:46,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:58:46,997 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 1281 transitions. [2022-12-14 04:58:46,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 04:58:46,998 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:58:46,998 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:58:47,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c93c85a5-7d25-4157-b92d-5b71799de511/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 04:58:47,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c93c85a5-7d25-4157-b92d-5b71799de511/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-14 04:58:47,200 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-14 04:58:47,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:58:47,201 INFO L85 PathProgramCache]: Analyzing trace with hash 2003060692, now seen corresponding path program 1 times [2022-12-14 04:58:47,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:58:47,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882806945] [2022-12-14 04:58:47,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:58:47,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:58:47,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:58:47,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 04:58:47,342 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:58:47,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882806945] [2022-12-14 04:58:47,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882806945] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:58:47,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:58:47,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 04:58:47,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048416810] [2022-12-14 04:58:47,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:58:47,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:58:47,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:58:47,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:58:47,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:58:47,345 INFO L87 Difference]: Start difference. First operand 435 states and 1281 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2022-12-14 04:58:47,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:58:47,391 INFO L93 Difference]: Finished difference Result 395 states and 1164 transitions. [2022-12-14 04:58:47,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:58:47,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 9 [2022-12-14 04:58:47,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:58:47,395 INFO L225 Difference]: With dead ends: 395 [2022-12-14 04:58:47,395 INFO L226 Difference]: Without dead ends: 395 [2022-12-14 04:58:47,395 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 [2022-12-14 04:58:47,396 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 21 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 04:58:47,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 21 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 04:58:47,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2022-12-14 04:58:47,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2022-12-14 04:58:47,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 392 states have (on average 2.9693877551020407) internal successors, (1164), 394 states have internal predecessors, (1164), 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) [2022-12-14 04:58:47,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 1164 transitions. [2022-12-14 04:58:47,411 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 1164 transitions. Word has length 9 [2022-12-14 04:58:47,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:58:47,411 INFO L495 AbstractCegarLoop]: Abstraction has 395 states and 1164 transitions. [2022-12-14 04:58:47,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2022-12-14 04:58:47,411 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 1164 transitions. [2022-12-14 04:58:47,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 04:58:47,412 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:58:47,412 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:58:47,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 04:58:47,413 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-14 04:58:47,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:58:47,413 INFO L85 PathProgramCache]: Analyzing trace with hash 2003060550, now seen corresponding path program 1 times [2022-12-14 04:58:47,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:58:47,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737716805] [2022-12-14 04:58:47,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:58:47,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:58:47,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:58:47,450 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 04:58:47,450 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:58:47,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737716805] [2022-12-14 04:58:47,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737716805] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:58:47,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:58:47,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 04:58:47,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80455706] [2022-12-14 04:58:47,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:58:47,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:58:47,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:58:47,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:58:47,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:58:47,452 INFO L87 Difference]: Start difference. First operand 395 states and 1164 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2022-12-14 04:58:47,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:58:47,485 INFO L93 Difference]: Finished difference Result 355 states and 1047 transitions. [2022-12-14 04:58:47,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:58:47,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 9 [2022-12-14 04:58:47,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:58:47,489 INFO L225 Difference]: With dead ends: 355 [2022-12-14 04:58:47,489 INFO L226 Difference]: Without dead ends: 355 [2022-12-14 04:58:47,489 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 [2022-12-14 04:58:47,490 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 20 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 04:58:47,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 21 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 04:58:47,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2022-12-14 04:58:47,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 355. [2022-12-14 04:58:47,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 353 states have (on average 2.9660056657223794) internal successors, (1047), 354 states have internal predecessors, (1047), 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) [2022-12-14 04:58:47,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 1047 transitions. [2022-12-14 04:58:47,503 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 1047 transitions. Word has length 9 [2022-12-14 04:58:47,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:58:47,503 INFO L495 AbstractCegarLoop]: Abstraction has 355 states and 1047 transitions. [2022-12-14 04:58:47,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2022-12-14 04:58:47,504 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 1047 transitions. [2022-12-14 04:58:47,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 04:58:47,504 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:58:47,504 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:58:47,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 04:58:47,505 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-14 04:58:47,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:58:47,505 INFO L85 PathProgramCache]: Analyzing trace with hash 2003060780, now seen corresponding path program 1 times [2022-12-14 04:58:47,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:58:47,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079054993] [2022-12-14 04:58:47,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:58:47,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:58:47,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:58:47,554 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 04:58:47,554 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:58:47,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079054993] [2022-12-14 04:58:47,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079054993] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:58:47,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:58:47,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 04:58:47,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677407618] [2022-12-14 04:58:47,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:58:47,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:58:47,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:58:47,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:58:47,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:58:47,555 INFO L87 Difference]: Start difference. First operand 355 states and 1047 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2022-12-14 04:58:47,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:58:47,587 INFO L93 Difference]: Finished difference Result 315 states and 930 transitions. [2022-12-14 04:58:47,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:58:47,587 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 9 [2022-12-14 04:58:47,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:58:47,590 INFO L225 Difference]: With dead ends: 315 [2022-12-14 04:58:47,590 INFO L226 Difference]: Without dead ends: 315 [2022-12-14 04:58:47,591 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 [2022-12-14 04:58:47,591 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 18 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 04:58:47,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 21 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 04:58:47,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-12-14 04:58:47,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2022-12-14 04:58:47,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 314 states have (on average 2.961783439490446) internal successors, (930), 314 states have internal predecessors, (930), 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) [2022-12-14 04:58:47,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 930 transitions. [2022-12-14 04:58:47,603 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 930 transitions. Word has length 9 [2022-12-14 04:58:47,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:58:47,603 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 930 transitions. [2022-12-14 04:58:47,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2022-12-14 04:58:47,603 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 930 transitions. [2022-12-14 04:58:47,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 04:58:47,604 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:58:47,604 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-14 04:58:47,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 04:58:47,605 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-14 04:58:47,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:58:47,605 INFO L85 PathProgramCache]: Analyzing trace with hash 786136956, now seen corresponding path program 1 times [2022-12-14 04:58:47,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:58:47,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972002727] [2022-12-14 04:58:47,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:58:47,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:58:47,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 04:58:47,613 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 04:58:47,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 04:58:47,619 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 04:58:47,619 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 04:58:47,619 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-12-14 04:58:47,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-12-14 04:58:47,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-12-14 04:58:47,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-12-14 04:58:47,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-12-14 04:58:47,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-12-14 04:58:47,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2022-12-14 04:58:47,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2022-12-14 04:58:47,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2022-12-14 04:58:47,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-12-14 04:58:47,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-12-14 04:58:47,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-12-14 04:58:47,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-12-14 04:58:47,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 04:58:47,620 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:58:47,620 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-14 04:58:47,620 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-14 04:58:47,646 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-14 04:58:47,650 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 04:58:47,650 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 187 places, 202 transitions, 425 flow [2022-12-14 04:58:47,650 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 187 places, 202 transitions, 425 flow [2022-12-14 04:58:47,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 187 places, 202 transitions, 425 flow [2022-12-14 04:58:47,683 INFO L130 PetriNetUnfolder]: 25/239 cut-off events. [2022-12-14 04:58:47,683 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-12-14 04:58:47,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255 conditions, 239 events. 25/239 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 622 event pairs, 0 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 175. Up to 8 conditions per place. [2022-12-14 04:58:47,692 INFO L119 LiptonReduction]: Number of co-enabled transitions 22356 [2022-12-14 04:58:51,574 INFO L134 LiptonReduction]: Checked pairs total: 31369 [2022-12-14 04:58:51,574 INFO L136 LiptonReduction]: Total number of compositions: 225 [2022-12-14 04:58:51,575 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46 places, 48 transitions, 117 flow [2022-12-14 04:58:51,757 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8494 states, 8217 states have (on average 4.426189606912499) internal successors, (36370), 8493 states have internal predecessors, (36370), 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) [2022-12-14 04:58:51,758 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 04:58:51,758 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;@6eb1d5d0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 04:58:51,758 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-12-14 04:58:51,776 INFO L276 IsEmpty]: Start isEmpty. Operand has 8494 states, 8217 states have (on average 4.426189606912499) internal successors, (36370), 8493 states have internal predecessors, (36370), 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) [2022-12-14 04:58:51,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 04:58:51,776 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:58:51,776 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 04:58:51,776 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-14 04:58:51,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:58:51,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1242053286, now seen corresponding path program 1 times [2022-12-14 04:58:51,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:58:51,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755693516] [2022-12-14 04:58:51,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:58:51,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:58:51,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:58:51,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:58:51,834 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:58:51,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755693516] [2022-12-14 04:58:51,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755693516] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:58:51,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:58:51,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 04:58:51,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581994388] [2022-12-14 04:58:51,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:58:51,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:58:51,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:58:51,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:58:51,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:58:51,846 INFO L87 Difference]: Start difference. First operand has 8494 states, 8217 states have (on average 4.426189606912499) internal successors, (36370), 8493 states have internal predecessors, (36370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:58:51,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:58:51,938 INFO L93 Difference]: Finished difference Result 4899 states and 19735 transitions. [2022-12-14 04:58:51,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:58:51,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-14 04:58:51,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:58:51,967 INFO L225 Difference]: With dead ends: 4899 [2022-12-14 04:58:51,967 INFO L226 Difference]: Without dead ends: 4899 [2022-12-14 04:58:51,968 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 [2022-12-14 04:58:51,968 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 37 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 04:58:51,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 36 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 04:58:51,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4899 states. [2022-12-14 04:58:52,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4899 to 4899. [2022-12-14 04:58:52,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4899 states, 4851 states have (on average 4.068233353947639) internal successors, (19735), 4898 states have internal predecessors, (19735), 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) [2022-12-14 04:58:52,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4899 states to 4899 states and 19735 transitions. [2022-12-14 04:58:52,181 INFO L78 Accepts]: Start accepts. Automaton has 4899 states and 19735 transitions. Word has length 5 [2022-12-14 04:58:52,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:58:52,181 INFO L495 AbstractCegarLoop]: Abstraction has 4899 states and 19735 transitions. [2022-12-14 04:58:52,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:58:52,182 INFO L276 IsEmpty]: Start isEmpty. Operand 4899 states and 19735 transitions. [2022-12-14 04:58:52,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 04:58:52,182 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:58:52,182 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 04:58:52,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 04:58:52,182 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-14 04:58:52,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:58:52,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1242053449, now seen corresponding path program 1 times [2022-12-14 04:58:52,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:58:52,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72661900] [2022-12-14 04:58:52,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:58:52,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:58:52,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:58:52,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:58:52,222 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:58:52,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72661900] [2022-12-14 04:58:52,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72661900] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:58:52,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:58:52,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 04:58:52,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717029322] [2022-12-14 04:58:52,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:58:52,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:58:52,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:58:52,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:58:52,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:58:52,224 INFO L87 Difference]: Start difference. First operand 4899 states and 19735 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:58:52,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:58:52,333 INFO L93 Difference]: Finished difference Result 4355 states and 17603 transitions. [2022-12-14 04:58:52,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:58:52,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-14 04:58:52,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:58:52,372 INFO L225 Difference]: With dead ends: 4355 [2022-12-14 04:58:52,372 INFO L226 Difference]: Without dead ends: 4355 [2022-12-14 04:58:52,372 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 [2022-12-14 04:58:52,373 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 36 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:58:52,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 36 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 04:58:52,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4355 states. [2022-12-14 04:58:52,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4355 to 4355. [2022-12-14 04:58:52,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4355 states, 4323 states have (on average 4.071940781864446) internal successors, (17603), 4354 states have internal predecessors, (17603), 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) [2022-12-14 04:58:52,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4355 states to 4355 states and 17603 transitions. [2022-12-14 04:58:52,520 INFO L78 Accepts]: Start accepts. Automaton has 4355 states and 17603 transitions. Word has length 5 [2022-12-14 04:58:52,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:58:52,520 INFO L495 AbstractCegarLoop]: Abstraction has 4355 states and 17603 transitions. [2022-12-14 04:58:52,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:58:52,521 INFO L276 IsEmpty]: Start isEmpty. Operand 4355 states and 17603 transitions. [2022-12-14 04:58:52,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 04:58:52,521 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:58:52,521 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 04:58:52,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 04:58:52,521 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-14 04:58:52,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:58:52,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1242053578, now seen corresponding path program 1 times [2022-12-14 04:58:52,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:58:52,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661495583] [2022-12-14 04:58:52,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:58:52,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:58:52,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:58:52,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:58:52,556 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:58:52,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661495583] [2022-12-14 04:58:52,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661495583] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:58:52,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:58:52,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 04:58:52,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138508380] [2022-12-14 04:58:52,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:58:52,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:58:52,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:58:52,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:58:52,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:58:52,558 INFO L87 Difference]: Start difference. First operand 4355 states and 17603 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:58:52,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:58:52,651 INFO L93 Difference]: Finished difference Result 3811 states and 15471 transitions. [2022-12-14 04:58:52,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:58:52,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-14 04:58:52,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:58:52,670 INFO L225 Difference]: With dead ends: 3811 [2022-12-14 04:58:52,670 INFO L226 Difference]: Without dead ends: 3811 [2022-12-14 04:58:52,670 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 [2022-12-14 04:58:52,670 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 34 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:58:52,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 36 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 04:58:52,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3811 states. [2022-12-14 04:58:52,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3811 to 3811. [2022-12-14 04:58:52,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3811 states, 3795 states have (on average 4.076679841897233) internal successors, (15471), 3810 states have internal predecessors, (15471), 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) [2022-12-14 04:58:52,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3811 states to 3811 states and 15471 transitions. [2022-12-14 04:58:52,815 INFO L78 Accepts]: Start accepts. Automaton has 3811 states and 15471 transitions. Word has length 5 [2022-12-14 04:58:52,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:58:52,815 INFO L495 AbstractCegarLoop]: Abstraction has 3811 states and 15471 transitions. [2022-12-14 04:58:52,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:58:52,815 INFO L276 IsEmpty]: Start isEmpty. Operand 3811 states and 15471 transitions. [2022-12-14 04:58:52,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 04:58:52,815 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:58:52,816 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:58:52,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-14 04:58:52,816 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-14 04:58:52,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:58:52,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1084655992, now seen corresponding path program 1 times [2022-12-14 04:58:52,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:58:52,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703198067] [2022-12-14 04:58:52,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:58:52,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:58:52,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:58:52,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 04:58:52,876 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:58:52,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703198067] [2022-12-14 04:58:52,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703198067] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:58:52,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:58:52,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 04:58:52,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716883529] [2022-12-14 04:58:52,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:58:52,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:58:52,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:58:52,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:58:52,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:58:52,878 INFO L87 Difference]: Start difference. First operand 3811 states and 15471 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2022-12-14 04:58:52,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:58:52,947 INFO L93 Difference]: Finished difference Result 3433 states and 13968 transitions. [2022-12-14 04:58:52,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:58:52,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 9 [2022-12-14 04:58:52,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:58:52,967 INFO L225 Difference]: With dead ends: 3433 [2022-12-14 04:58:52,967 INFO L226 Difference]: Without dead ends: 3433 [2022-12-14 04:58:52,967 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 [2022-12-14 04:58:52,967 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 33 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 04:58:52,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 33 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 04:58:52,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3433 states. [2022-12-14 04:58:53,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3433 to 3433. [2022-12-14 04:58:53,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3433 states, 3421 states have (on average 4.0830166617947965) internal successors, (13968), 3432 states have internal predecessors, (13968), 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) [2022-12-14 04:58:53,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3433 states to 3433 states and 13968 transitions. [2022-12-14 04:58:53,094 INFO L78 Accepts]: Start accepts. Automaton has 3433 states and 13968 transitions. Word has length 9 [2022-12-14 04:58:53,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:58:53,094 INFO L495 AbstractCegarLoop]: Abstraction has 3433 states and 13968 transitions. [2022-12-14 04:58:53,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2022-12-14 04:58:53,095 INFO L276 IsEmpty]: Start isEmpty. Operand 3433 states and 13968 transitions. [2022-12-14 04:58:53,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 04:58:53,095 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:58:53,095 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:58:53,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-14 04:58:53,096 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-14 04:58:53,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:58:53,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1084656136, now seen corresponding path program 1 times [2022-12-14 04:58:53,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:58:53,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7759318] [2022-12-14 04:58:53,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:58:53,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:58:53,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:58:53,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 04:58:53,196 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:58:53,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7759318] [2022-12-14 04:58:53,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7759318] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:58:53,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:58:53,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 04:58:53,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929603232] [2022-12-14 04:58:53,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:58:53,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:58:53,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:58:53,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:58:53,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:58:53,198 INFO L87 Difference]: Start difference. First operand 3433 states and 13968 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2022-12-14 04:58:53,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:58:53,261 INFO L93 Difference]: Finished difference Result 3055 states and 12465 transitions. [2022-12-14 04:58:53,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:58:53,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 9 [2022-12-14 04:58:53,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:58:53,276 INFO L225 Difference]: With dead ends: 3055 [2022-12-14 04:58:53,276 INFO L226 Difference]: Without dead ends: 3055 [2022-12-14 04:58:53,276 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 [2022-12-14 04:58:53,277 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 31 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 04:58:53,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 34 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 04:58:53,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3055 states. [2022-12-14 04:58:53,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3055 to 3055. [2022-12-14 04:58:53,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3055 states, 3047 states have (on average 4.090909090909091) internal successors, (12465), 3054 states have internal predecessors, (12465), 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) [2022-12-14 04:58:53,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3055 states to 3055 states and 12465 transitions. [2022-12-14 04:58:53,387 INFO L78 Accepts]: Start accepts. Automaton has 3055 states and 12465 transitions. Word has length 9 [2022-12-14 04:58:53,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:58:53,388 INFO L495 AbstractCegarLoop]: Abstraction has 3055 states and 12465 transitions. [2022-12-14 04:58:53,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2022-12-14 04:58:53,388 INFO L276 IsEmpty]: Start isEmpty. Operand 3055 states and 12465 transitions. [2022-12-14 04:58:53,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 04:58:53,388 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:58:53,388 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:58:53,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-14 04:58:53,388 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-14 04:58:53,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:58:53,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1084655881, now seen corresponding path program 1 times [2022-12-14 04:58:53,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:58:53,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701343783] [2022-12-14 04:58:53,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:58:53,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:58:53,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:58:53,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 04:58:53,421 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:58:53,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701343783] [2022-12-14 04:58:53,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701343783] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:58:53,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:58:53,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 04:58:53,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969253318] [2022-12-14 04:58:53,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:58:53,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:58:53,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:58:53,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:58:53,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:58:53,423 INFO L87 Difference]: Start difference. First operand 3055 states and 12465 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2022-12-14 04:58:53,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:58:53,473 INFO L93 Difference]: Finished difference Result 2677 states and 10962 transitions. [2022-12-14 04:58:53,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:58:53,474 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 9 [2022-12-14 04:58:53,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:58:53,484 INFO L225 Difference]: With dead ends: 2677 [2022-12-14 04:58:53,484 INFO L226 Difference]: Without dead ends: 2677 [2022-12-14 04:58:53,484 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 [2022-12-14 04:58:53,485 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 31 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 04:58:53,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 33 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 04:58:53,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2677 states. [2022-12-14 04:58:53,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2677 to 2677. [2022-12-14 04:58:53,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2677 states, 2673 states have (on average 4.101010101010101) internal successors, (10962), 2676 states have internal predecessors, (10962), 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) [2022-12-14 04:58:53,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2677 states to 2677 states and 10962 transitions. [2022-12-14 04:58:53,566 INFO L78 Accepts]: Start accepts. Automaton has 2677 states and 10962 transitions. Word has length 9 [2022-12-14 04:58:53,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:58:53,566 INFO L495 AbstractCegarLoop]: Abstraction has 2677 states and 10962 transitions. [2022-12-14 04:58:53,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2022-12-14 04:58:53,567 INFO L276 IsEmpty]: Start isEmpty. Operand 2677 states and 10962 transitions. [2022-12-14 04:58:53,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 04:58:53,570 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:58:53,570 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-14 04:58:53,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-14 04:58:53,570 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-14 04:58:53,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:58:53,571 INFO L85 PathProgramCache]: Analyzing trace with hash 213606070, now seen corresponding path program 1 times [2022-12-14 04:58:53,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:58:53,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297664198] [2022-12-14 04:58:53,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:58:53,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:58:53,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:58:53,626 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 04:58:53,626 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:58:53,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297664198] [2022-12-14 04:58:53,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297664198] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:58:53,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:58:53,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 04:58:53,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235301328] [2022-12-14 04:58:53,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:58:53,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:58:53,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:58:53,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:58:53,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:58:53,627 INFO L87 Difference]: Start difference. First operand 2677 states and 10962 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) [2022-12-14 04:58:53,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:58:53,691 INFO L93 Difference]: Finished difference Result 3167 states and 12964 transitions. [2022-12-14 04:58:53,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:58:53,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 13 [2022-12-14 04:58:53,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:58:53,708 INFO L225 Difference]: With dead ends: 3167 [2022-12-14 04:58:53,708 INFO L226 Difference]: Without dead ends: 3167 [2022-12-14 04:58:53,708 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 [2022-12-14 04:58:53,708 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 21 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 04:58:53,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 34 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 04:58:53,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3167 states. [2022-12-14 04:58:53,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3167 to 2922. [2022-12-14 04:58:53,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2922 states, 2918 states have (on average 4.18368745716244) internal successors, (12208), 2921 states have internal predecessors, (12208), 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) [2022-12-14 04:58:53,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2922 states to 2922 states and 12208 transitions. [2022-12-14 04:58:53,820 INFO L78 Accepts]: Start accepts. Automaton has 2922 states and 12208 transitions. Word has length 13 [2022-12-14 04:58:53,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:58:53,820 INFO L495 AbstractCegarLoop]: Abstraction has 2922 states and 12208 transitions. [2022-12-14 04:58:53,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) [2022-12-14 04:58:53,820 INFO L276 IsEmpty]: Start isEmpty. Operand 2922 states and 12208 transitions. [2022-12-14 04:58:53,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 04:58:53,821 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:58:53,821 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-14 04:58:53,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-14 04:58:53,821 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-14 04:58:53,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:58:53,822 INFO L85 PathProgramCache]: Analyzing trace with hash 213605942, now seen corresponding path program 1 times [2022-12-14 04:58:53,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:58:53,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21654403] [2022-12-14 04:58:53,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:58:53,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:58:53,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:58:53,868 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 04:58:53,868 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:58:53,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21654403] [2022-12-14 04:58:53,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21654403] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:58:53,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:58:53,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 04:58:53,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683403378] [2022-12-14 04:58:53,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:58:53,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:58:53,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:58:53,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:58:53,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:58:53,869 INFO L87 Difference]: Start difference. First operand 2922 states and 12208 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) [2022-12-14 04:58:53,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:58:53,927 INFO L93 Difference]: Finished difference Result 2677 states and 10962 transitions. [2022-12-14 04:58:53,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:58:53,927 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 13 [2022-12-14 04:58:53,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:58:53,940 INFO L225 Difference]: With dead ends: 2677 [2022-12-14 04:58:53,940 INFO L226 Difference]: Without dead ends: 2677 [2022-12-14 04:58:53,940 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 [2022-12-14 04:58:53,940 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 29 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 04:58:53,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 30 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 04:58:53,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2677 states. [2022-12-14 04:58:54,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2677 to 2677. [2022-12-14 04:58:54,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2677 states, 2674 states have (on average 4.099476439790576) internal successors, (10962), 2676 states have internal predecessors, (10962), 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) [2022-12-14 04:58:54,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2677 states to 2677 states and 10962 transitions. [2022-12-14 04:58:54,018 INFO L78 Accepts]: Start accepts. Automaton has 2677 states and 10962 transitions. Word has length 13 [2022-12-14 04:58:54,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:58:54,018 INFO L495 AbstractCegarLoop]: Abstraction has 2677 states and 10962 transitions. [2022-12-14 04:58:54,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) [2022-12-14 04:58:54,019 INFO L276 IsEmpty]: Start isEmpty. Operand 2677 states and 10962 transitions. [2022-12-14 04:58:54,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 04:58:54,019 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:58:54,020 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:58:54,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-14 04:58:54,020 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-14 04:58:54,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:58:54,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1968145095, now seen corresponding path program 1 times [2022-12-14 04:58:54,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:58:54,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919073894] [2022-12-14 04:58:54,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:58:54,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:58:54,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:58:54,046 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 04:58:54,046 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:58:54,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919073894] [2022-12-14 04:58:54,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919073894] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:58:54,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:58:54,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 04:58:54,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634894668] [2022-12-14 04:58:54,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:58:54,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:58:54,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:58:54,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:58:54,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:58:54,048 INFO L87 Difference]: Start difference. First operand 2677 states and 10962 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:58:54,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:58:54,101 INFO L93 Difference]: Finished difference Result 2432 states and 9961 transitions. [2022-12-14 04:58:54,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:58:54,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-12-14 04:58:54,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:58:54,112 INFO L225 Difference]: With dead ends: 2432 [2022-12-14 04:58:54,112 INFO L226 Difference]: Without dead ends: 2432 [2022-12-14 04:58:54,112 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 [2022-12-14 04:58:54,113 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 27 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 04:58:54,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 31 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 04:58:54,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2432 states. [2022-12-14 04:58:54,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2432 to 2432. [2022-12-14 04:58:54,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2432 states, 2430 states have (on average 4.09917695473251) internal successors, (9961), 2431 states have internal predecessors, (9961), 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) [2022-12-14 04:58:54,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2432 states to 2432 states and 9961 transitions. [2022-12-14 04:58:54,185 INFO L78 Accepts]: Start accepts. Automaton has 2432 states and 9961 transitions. Word has length 14 [2022-12-14 04:58:54,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:58:54,186 INFO L495 AbstractCegarLoop]: Abstraction has 2432 states and 9961 transitions. [2022-12-14 04:58:54,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:58:54,186 INFO L276 IsEmpty]: Start isEmpty. Operand 2432 states and 9961 transitions. [2022-12-14 04:58:54,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 04:58:54,187 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:58:54,187 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:58:54,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-14 04:58:54,187 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-14 04:58:54,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:58:54,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1968145452, now seen corresponding path program 1 times [2022-12-14 04:58:54,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:58:54,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899650040] [2022-12-14 04:58:54,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:58:54,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:58:54,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:58:54,221 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 04:58:54,221 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:58:54,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899650040] [2022-12-14 04:58:54,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899650040] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:58:54,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645987888] [2022-12-14 04:58:54,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:58:54,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:58:54,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c93c85a5-7d25-4157-b92d-5b71799de511/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:58:54,223 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c93c85a5-7d25-4157-b92d-5b71799de511/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:58:54,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c93c85a5-7d25-4157-b92d-5b71799de511/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 04:58:54,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:58:54,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 04:58:54,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:58:54,305 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 04:58:54,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:58:54,325 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 04:58:54,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645987888] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 04:58:54,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 04:58:54,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 6 [2022-12-14 04:58:54,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575428029] [2022-12-14 04:58:54,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:58:54,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 04:58:54,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:58:54,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 04:58:54,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 04:58:54,327 INFO L87 Difference]: Start difference. First operand 2432 states and 9961 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:58:54,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:58:54,388 INFO L93 Difference]: Finished difference Result 2187 states and 8960 transitions. [2022-12-14 04:58:54,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:58:54,388 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-12-14 04:58:54,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:58:54,397 INFO L225 Difference]: With dead ends: 2187 [2022-12-14 04:58:54,397 INFO L226 Difference]: Without dead ends: 2187 [2022-12-14 04:58:54,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 04:58:54,398 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 26 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 04:58:54,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 39 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 04:58:54,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2187 states. [2022-12-14 04:58:54,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2187 to 2187. [2022-12-14 04:58:54,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2187 states, 2186 states have (on average 4.098810612991766) internal successors, (8960), 2186 states have internal predecessors, (8960), 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) [2022-12-14 04:58:54,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2187 states to 2187 states and 8960 transitions. [2022-12-14 04:58:54,463 INFO L78 Accepts]: Start accepts. Automaton has 2187 states and 8960 transitions. Word has length 14 [2022-12-14 04:58:54,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:58:54,464 INFO L495 AbstractCegarLoop]: Abstraction has 2187 states and 8960 transitions. [2022-12-14 04:58:54,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:58:54,464 INFO L276 IsEmpty]: Start isEmpty. Operand 2187 states and 8960 transitions. [2022-12-14 04:58:54,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 04:58:54,465 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:58:54,465 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-12-14 04:58:54,471 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c93c85a5-7d25-4157-b92d-5b71799de511/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 04:58:54,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c93c85a5-7d25-4157-b92d-5b71799de511/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:58:54,667 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-14 04:58:54,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:58:54,667 INFO L85 PathProgramCache]: Analyzing trace with hash -896276165, now seen corresponding path program 1 times [2022-12-14 04:58:54,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:58:54,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900584344] [2022-12-14 04:58:54,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:58:54,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:58:54,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 04:58:54,677 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 04:58:54,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 04:58:54,687 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 04:58:54,688 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 04:58:54,688 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-12-14 04:58:54,688 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-12-14 04:58:54,688 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-12-14 04:58:54,688 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-12-14 04:58:54,688 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-12-14 04:58:54,688 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-12-14 04:58:54,689 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-12-14 04:58:54,689 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-12-14 04:58:54,689 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2022-12-14 04:58:54,689 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2022-12-14 04:58:54,689 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2022-12-14 04:58:54,689 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-12-14 04:58:54,689 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-12-14 04:58:54,689 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-12-14 04:58:54,689 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-12-14 04:58:54,690 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-12-14 04:58:54,690 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-12-14 04:58:54,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-14 04:58:54,690 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:58:54,690 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-14 04:58:54,691 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-12-14 04:58:54,720 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-14 04:58:54,722 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 04:58:54,722 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 237 places, 257 transitions, 546 flow [2022-12-14 04:58:54,722 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 237 places, 257 transitions, 546 flow [2022-12-14 04:58:54,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 237 places, 257 transitions, 546 flow [2022-12-14 04:58:54,786 INFO L130 PetriNetUnfolder]: 33/307 cut-off events. [2022-12-14 04:58:54,786 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-12-14 04:58:54,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330 conditions, 307 events. 33/307 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 939 event pairs, 0 based on Foata normal form. 0/253 useless extension candidates. Maximal degree in co-relation 247. Up to 10 conditions per place. [2022-12-14 04:58:54,806 INFO L119 LiptonReduction]: Number of co-enabled transitions 41688 [2022-12-14 04:58:59,473 INFO L134 LiptonReduction]: Checked pairs total: 60810 [2022-12-14 04:58:59,474 INFO L136 LiptonReduction]: Total number of compositions: 294 [2022-12-14 04:58:59,475 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 59 places, 62 transitions, 156 flow [2022-12-14 04:59:01,599 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 94384 states, 92983 states have (on average 5.54943376746287) internal successors, (516003), 94383 states have internal predecessors, (516003), 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) [2022-12-14 04:59:01,600 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 04:59:01,600 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;@6eb1d5d0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 04:59:01,601 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-12-14 04:59:01,738 INFO L276 IsEmpty]: Start isEmpty. Operand has 94384 states, 92983 states have (on average 5.54943376746287) internal successors, (516003), 94383 states have internal predecessors, (516003), 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) [2022-12-14 04:59:01,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 04:59:01,738 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:59:01,738 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 04:59:01,738 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-14 04:59:01,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:59:01,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1815289991, now seen corresponding path program 1 times [2022-12-14 04:59:01,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:59:01,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497531306] [2022-12-14 04:59:01,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:59:01,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:59:01,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:59:01,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:59:01,751 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:59:01,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497531306] [2022-12-14 04:59:01,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497531306] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:59:01,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:59:01,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 04:59:01,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914196211] [2022-12-14 04:59:01,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:59:01,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 04:59:01,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:59:01,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 04:59:01,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 04:59:01,887 INFO L87 Difference]: Start difference. First operand has 94384 states, 92983 states have (on average 5.54943376746287) internal successors, (516003), 94383 states have internal predecessors, (516003), 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 2 states, 1 states have (on average 5.0) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:59:02,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:59:02,575 INFO L93 Difference]: Finished difference Result 54443 states and 278567 transitions. [2022-12-14 04:59:02,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 04:59:02,576 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 5.0) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-14 04:59:02,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:59:03,025 INFO L225 Difference]: With dead ends: 54443 [2022-12-14 04:59:03,025 INFO L226 Difference]: Without dead ends: 54443 [2022-12-14 04:59:03,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 04:59:03,026 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 04:59:03,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 04:59:03,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54443 states. [2022-12-14 04:59:04,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54443 to 54443. [2022-12-14 04:59:04,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54443 states, 54187 states have (on average 5.140845590270729) internal successors, (278567), 54442 states have internal predecessors, (278567), 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) [2022-12-14 04:59:04,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54443 states to 54443 states and 278567 transitions. [2022-12-14 04:59:04,814 INFO L78 Accepts]: Start accepts. Automaton has 54443 states and 278567 transitions. Word has length 5 [2022-12-14 04:59:04,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:59:04,814 INFO L495 AbstractCegarLoop]: Abstraction has 54443 states and 278567 transitions. [2022-12-14 04:59:04,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 5.0) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:59:04,815 INFO L276 IsEmpty]: Start isEmpty. Operand 54443 states and 278567 transitions. [2022-12-14 04:59:04,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 04:59:04,815 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:59:04,815 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 04:59:04,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-14 04:59:04,815 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-14 04:59:04,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:59:04,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1815289640, now seen corresponding path program 1 times [2022-12-14 04:59:04,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:59:04,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534092666] [2022-12-14 04:59:04,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:59:04,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:59:04,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:59:04,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:59:04,959 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:59:04,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534092666] [2022-12-14 04:59:04,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534092666] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:59:04,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:59:04,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 04:59:04,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121565993] [2022-12-14 04:59:04,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:59:04,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:59:04,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:59:04,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:59:04,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:59:04,960 INFO L87 Difference]: Start difference. First operand 54443 states and 278567 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:59:05,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:59:05,413 INFO L93 Difference]: Finished difference Result 48999 states and 251255 transitions. [2022-12-14 04:59:05,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:59:05,414 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-14 04:59:05,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:59:05,729 INFO L225 Difference]: With dead ends: 48999 [2022-12-14 04:59:05,729 INFO L226 Difference]: Without dead ends: 48999 [2022-12-14 04:59:05,729 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 [2022-12-14 04:59:05,730 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 49 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:59:05,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 48 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 04:59:05,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48999 states. [2022-12-14 04:59:06,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48999 to 48999. [2022-12-14 04:59:07,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48999 states, 48807 states have (on average 5.147929600262257) internal successors, (251255), 48998 states have internal predecessors, (251255), 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) [2022-12-14 04:59:07,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48999 states to 48999 states and 251255 transitions. [2022-12-14 04:59:07,411 INFO L78 Accepts]: Start accepts. Automaton has 48999 states and 251255 transitions. Word has length 5 [2022-12-14 04:59:07,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:59:07,411 INFO L495 AbstractCegarLoop]: Abstraction has 48999 states and 251255 transitions. [2022-12-14 04:59:07,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:59:07,412 INFO L276 IsEmpty]: Start isEmpty. Operand 48999 states and 251255 transitions. [2022-12-14 04:59:07,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 04:59:07,412 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:59:07,412 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 04:59:07,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-14 04:59:07,412 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-14 04:59:07,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:59:07,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1815289992, now seen corresponding path program 1 times [2022-12-14 04:59:07,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:59:07,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041420503] [2022-12-14 04:59:07,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:59:07,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:59:07,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:59:07,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:59:07,459 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:59:07,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041420503] [2022-12-14 04:59:07,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041420503] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:59:07,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:59:07,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 04:59:07,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100299074] [2022-12-14 04:59:07,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:59:07,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:59:07,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:59:07,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:59:07,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:59:07,461 INFO L87 Difference]: Start difference. First operand 48999 states and 251255 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:59:08,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:59:08,121 INFO L93 Difference]: Finished difference Result 59887 states and 305879 transitions. [2022-12-14 04:59:08,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:59:08,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-14 04:59:08,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:59:08,501 INFO L225 Difference]: With dead ends: 59887 [2022-12-14 04:59:08,502 INFO L226 Difference]: Without dead ends: 59887 [2022-12-14 04:59:08,502 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 [2022-12-14 04:59:08,502 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 41 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:59:08,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 51 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 04:59:08,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59887 states. [2022-12-14 04:59:09,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59887 to 54443. [2022-12-14 04:59:09,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54443 states, 54251 states have (on average 5.235129306372233) internal successors, (284011), 54442 states have internal predecessors, (284011), 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) [2022-12-14 04:59:10,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54443 states to 54443 states and 284011 transitions. [2022-12-14 04:59:10,397 INFO L78 Accepts]: Start accepts. Automaton has 54443 states and 284011 transitions. Word has length 5 [2022-12-14 04:59:10,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:59:10,398 INFO L495 AbstractCegarLoop]: Abstraction has 54443 states and 284011 transitions. [2022-12-14 04:59:10,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:59:10,399 INFO L276 IsEmpty]: Start isEmpty. Operand 54443 states and 284011 transitions. [2022-12-14 04:59:10,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 04:59:10,400 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:59:10,400 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 04:59:10,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-14 04:59:10,401 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-14 04:59:10,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:59:10,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1815289802, now seen corresponding path program 1 times [2022-12-14 04:59:10,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:59:10,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864423352] [2022-12-14 04:59:10,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:59:10,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:59:10,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:59:10,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:59:10,441 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:59:10,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864423352] [2022-12-14 04:59:10,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864423352] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:59:10,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:59:10,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 04:59:10,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062305951] [2022-12-14 04:59:10,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:59:10,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:59:10,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:59:10,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:59:10,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:59:10,443 INFO L87 Difference]: Start difference. First operand 54443 states and 284011 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:59:11,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:59:11,163 INFO L93 Difference]: Finished difference Result 48999 states and 251255 transitions. [2022-12-14 04:59:11,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:59:11,163 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-14 04:59:11,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:59:11,385 INFO L225 Difference]: With dead ends: 48999 [2022-12-14 04:59:11,385 INFO L226 Difference]: Without dead ends: 48999 [2022-12-14 04:59:11,385 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 [2022-12-14 04:59:11,386 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 48 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:59:11,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 48 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 04:59:11,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48999 states. [2022-12-14 04:59:12,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48999 to 48999. [2022-12-14 04:59:12,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48999 states, 48871 states have (on average 5.141188025618465) internal successors, (251255), 48998 states have internal predecessors, (251255), 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) [2022-12-14 04:59:12,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48999 states to 48999 states and 251255 transitions. [2022-12-14 04:59:12,867 INFO L78 Accepts]: Start accepts. Automaton has 48999 states and 251255 transitions. Word has length 5 [2022-12-14 04:59:12,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:59:12,867 INFO L495 AbstractCegarLoop]: Abstraction has 48999 states and 251255 transitions. [2022-12-14 04:59:12,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:59:12,867 INFO L276 IsEmpty]: Start isEmpty. Operand 48999 states and 251255 transitions. [2022-12-14 04:59:12,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 04:59:12,867 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:59:12,867 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 04:59:12,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-14 04:59:12,867 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-14 04:59:12,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:59:12,868 INFO L85 PathProgramCache]: Analyzing trace with hash 439417591, now seen corresponding path program 1 times [2022-12-14 04:59:12,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:59:12,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394735884] [2022-12-14 04:59:12,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:59:12,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:59:12,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:59:12,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:59:12,885 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:59:12,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394735884] [2022-12-14 04:59:12,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394735884] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:59:12,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:59:12,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 04:59:12,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713152863] [2022-12-14 04:59:12,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:59:12,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:59:12,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:59:12,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:59:12,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:59:12,887 INFO L87 Difference]: Start difference. First operand 48999 states and 251255 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:59:13,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:59:13,243 INFO L93 Difference]: Finished difference Result 43555 states and 223943 transitions. [2022-12-14 04:59:13,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:59:13,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-12-14 04:59:13,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:59:13,652 INFO L225 Difference]: With dead ends: 43555 [2022-12-14 04:59:13,652 INFO L226 Difference]: Without dead ends: 43555 [2022-12-14 04:59:13,652 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 [2022-12-14 04:59:13,653 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 46 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:59:13,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 48 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 04:59:13,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43555 states. [2022-12-14 04:59:14,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43555 to 43555. [2022-12-14 04:59:14,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43555 states, 43491 states have (on average 5.149180290174979) internal successors, (223943), 43554 states have internal predecessors, (223943), 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) [2022-12-14 04:59:15,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43555 states to 43555 states and 223943 transitions. [2022-12-14 04:59:15,066 INFO L78 Accepts]: Start accepts. Automaton has 43555 states and 223943 transitions. Word has length 6 [2022-12-14 04:59:15,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:59:15,067 INFO L495 AbstractCegarLoop]: Abstraction has 43555 states and 223943 transitions. [2022-12-14 04:59:15,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:59:15,067 INFO L276 IsEmpty]: Start isEmpty. Operand 43555 states and 223943 transitions. [2022-12-14 04:59:15,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 04:59:15,067 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:59:15,067 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:59:15,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-14 04:59:15,067 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-14 04:59:15,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:59:15,068 INFO L85 PathProgramCache]: Analyzing trace with hash 168949895, now seen corresponding path program 1 times [2022-12-14 04:59:15,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:59:15,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805236807] [2022-12-14 04:59:15,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:59:15,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:59:15,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:59:15,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 04:59:15,117 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:59:15,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805236807] [2022-12-14 04:59:15,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805236807] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:59:15,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:59:15,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 04:59:15,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071979191] [2022-12-14 04:59:15,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:59:15,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:59:15,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:59:15,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:59:15,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:59:15,119 INFO L87 Difference]: Start difference. First operand 43555 states and 223943 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2022-12-14 04:59:15,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:59:15,728 INFO L93 Difference]: Finished difference Result 52259 states and 267847 transitions. [2022-12-14 04:59:15,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:59:15,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 9 [2022-12-14 04:59:15,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:59:15,996 INFO L225 Difference]: With dead ends: 52259 [2022-12-14 04:59:15,996 INFO L226 Difference]: Without dead ends: 52259 [2022-12-14 04:59:15,996 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 [2022-12-14 04:59:15,997 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 37 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:59:15,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 49 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 04:59:16,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52259 states. [2022-12-14 04:59:17,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52259 to 47907. [2022-12-14 04:59:17,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47907 states, 47843 states have (on average 5.230587546767552) internal successors, (250247), 47906 states have internal predecessors, (250247), 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) [2022-12-14 04:59:17,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47907 states to 47907 states and 250247 transitions. [2022-12-14 04:59:17,661 INFO L78 Accepts]: Start accepts. Automaton has 47907 states and 250247 transitions. Word has length 9 [2022-12-14 04:59:17,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:59:17,662 INFO L495 AbstractCegarLoop]: Abstraction has 47907 states and 250247 transitions. [2022-12-14 04:59:17,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2022-12-14 04:59:17,662 INFO L276 IsEmpty]: Start isEmpty. Operand 47907 states and 250247 transitions. [2022-12-14 04:59:17,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 04:59:17,662 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:59:17,662 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:59:17,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-12-14 04:59:17,663 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-14 04:59:17,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:59:17,663 INFO L85 PathProgramCache]: Analyzing trace with hash 168949717, now seen corresponding path program 1 times [2022-12-14 04:59:17,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:59:17,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069728654] [2022-12-14 04:59:17,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:59:17,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:59:17,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:59:17,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 04:59:17,708 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:59:17,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069728654] [2022-12-14 04:59:17,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069728654] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:59:17,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:59:17,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 04:59:17,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936051893] [2022-12-14 04:59:17,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:59:17,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:59:17,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:59:17,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:59:17,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:59:17,709 INFO L87 Difference]: Start difference. First operand 47907 states and 250247 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2022-12-14 04:59:18,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:59:18,324 INFO L93 Difference]: Finished difference Result 43555 states and 223943 transitions. [2022-12-14 04:59:18,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:59:18,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 9 [2022-12-14 04:59:18,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:59:18,522 INFO L225 Difference]: With dead ends: 43555 [2022-12-14 04:59:18,523 INFO L226 Difference]: Without dead ends: 43555 [2022-12-14 04:59:18,523 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 [2022-12-14 04:59:18,523 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 45 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:59:18,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 45 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 04:59:18,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43555 states. [2022-12-14 04:59:19,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43555 to 43555. [2022-12-14 04:59:19,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43555 states, 43507 states have (on average 5.147286643528628) internal successors, (223943), 43554 states have internal predecessors, (223943), 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) [2022-12-14 04:59:20,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43555 states to 43555 states and 223943 transitions. [2022-12-14 04:59:20,041 INFO L78 Accepts]: Start accepts. Automaton has 43555 states and 223943 transitions. Word has length 9 [2022-12-14 04:59:20,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:59:20,041 INFO L495 AbstractCegarLoop]: Abstraction has 43555 states and 223943 transitions. [2022-12-14 04:59:20,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2022-12-14 04:59:20,041 INFO L276 IsEmpty]: Start isEmpty. Operand 43555 states and 223943 transitions. [2022-12-14 04:59:20,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 04:59:20,042 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:59:20,042 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:59:20,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-14 04:59:20,042 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-14 04:59:20,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:59:20,042 INFO L85 PathProgramCache]: Analyzing trace with hash 942481290, now seen corresponding path program 1 times [2022-12-14 04:59:20,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:59:20,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602252907] [2022-12-14 04:59:20,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:59:20,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:59:20,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:59:20,059 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 04:59:20,059 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:59:20,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602252907] [2022-12-14 04:59:20,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602252907] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:59:20,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:59:20,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 04:59:20,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182920195] [2022-12-14 04:59:20,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:59:20,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:59:20,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:59:20,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:59:20,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:59:20,060 INFO L87 Difference]: Start difference. First operand 43555 states and 223943 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) [2022-12-14 04:59:20,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:59:20,384 INFO L93 Difference]: Finished difference Result 39203 states and 201991 transitions. [2022-12-14 04:59:20,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:59:20,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-12-14 04:59:20,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:59:20,560 INFO L225 Difference]: With dead ends: 39203 [2022-12-14 04:59:20,560 INFO L226 Difference]: Without dead ends: 39203 [2022-12-14 04:59:20,560 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 [2022-12-14 04:59:20,561 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 43 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:59:20,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 46 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 04:59:20,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39203 states. [2022-12-14 04:59:21,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39203 to 39203. [2022-12-14 04:59:21,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39203 states, 39171 states have (on average 5.156646498685252) internal successors, (201991), 39202 states have internal predecessors, (201991), 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) [2022-12-14 04:59:21,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39203 states to 39203 states and 201991 transitions. [2022-12-14 04:59:21,926 INFO L78 Accepts]: Start accepts. Automaton has 39203 states and 201991 transitions. Word has length 10 [2022-12-14 04:59:21,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:59:21,927 INFO L495 AbstractCegarLoop]: Abstraction has 39203 states and 201991 transitions. [2022-12-14 04:59:21,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) [2022-12-14 04:59:21,927 INFO L276 IsEmpty]: Start isEmpty. Operand 39203 states and 201991 transitions. [2022-12-14 04:59:21,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 04:59:21,927 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:59:21,927 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:59:21,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-14 04:59:21,927 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-14 04:59:21,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:59:21,928 INFO L85 PathProgramCache]: Analyzing trace with hash 942480970, now seen corresponding path program 1 times [2022-12-14 04:59:21,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:59:21,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858256863] [2022-12-14 04:59:21,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:59:21,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:59:21,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:59:21,955 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 04:59:21,955 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:59:21,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858256863] [2022-12-14 04:59:21,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858256863] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:59:21,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273712730] [2022-12-14 04:59:21,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:59:21,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:59:21,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c93c85a5-7d25-4157-b92d-5b71799de511/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:59:21,956 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c93c85a5-7d25-4157-b92d-5b71799de511/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:59:21,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c93c85a5-7d25-4157-b92d-5b71799de511/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 04:59:22,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:59:22,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 04:59:22,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:59:22,019 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 04:59:22,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:59:22,174 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 04:59:22,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273712730] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 04:59:22,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 04:59:22,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 6 [2022-12-14 04:59:22,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267195447] [2022-12-14 04:59:22,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:59:22,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 04:59:22,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:59:22,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 04:59:22,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 04:59:22,175 INFO L87 Difference]: Start difference. First operand 39203 states and 201991 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-12-14 04:59:22,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:59:22,461 INFO L93 Difference]: Finished difference Result 34851 states and 180039 transitions. [2022-12-14 04:59:22,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:59:22,462 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-12-14 04:59:22,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:59:22,613 INFO L225 Difference]: With dead ends: 34851 [2022-12-14 04:59:22,613 INFO L226 Difference]: Without dead ends: 34851 [2022-12-14 04:59:22,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 04:59:22,614 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 84 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:59:22,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 45 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 04:59:22,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34851 states. [2022-12-14 04:59:23,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34851 to 34851. [2022-12-14 04:59:23,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34851 states, 34835 states have (on average 5.1683364432323815) internal successors, (180039), 34850 states have internal predecessors, (180039), 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) [2022-12-14 04:59:23,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34851 states to 34851 states and 180039 transitions. [2022-12-14 04:59:23,556 INFO L78 Accepts]: Start accepts. Automaton has 34851 states and 180039 transitions. Word has length 10 [2022-12-14 04:59:23,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:59:23,556 INFO L495 AbstractCegarLoop]: Abstraction has 34851 states and 180039 transitions. [2022-12-14 04:59:23,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-12-14 04:59:23,557 INFO L276 IsEmpty]: Start isEmpty. Operand 34851 states and 180039 transitions. [2022-12-14 04:59:23,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 04:59:23,557 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:59:23,557 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-14 04:59:23,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c93c85a5-7d25-4157-b92d-5b71799de511/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-14 04:59:23,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c93c85a5-7d25-4157-b92d-5b71799de511/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:59:23,758 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-14 04:59:23,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:59:23,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1603193527, now seen corresponding path program 1 times [2022-12-14 04:59:23,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:59:23,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125103623] [2022-12-14 04:59:23,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:59:23,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:59:23,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:59:23,817 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 04:59:23,817 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:59:23,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125103623] [2022-12-14 04:59:23,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125103623] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:59:23,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:59:23,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 04:59:23,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23730902] [2022-12-14 04:59:23,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:59:23,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:59:23,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:59:23,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:59:23,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:59:23,818 INFO L87 Difference]: Start difference. First operand 34851 states and 180039 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) [2022-12-14 04:59:24,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:59:24,066 INFO L93 Difference]: Finished difference Result 31395 states and 162471 transitions. [2022-12-14 04:59:24,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:59:24,067 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 13 [2022-12-14 04:59:24,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:59:24,362 INFO L225 Difference]: With dead ends: 31395 [2022-12-14 04:59:24,362 INFO L226 Difference]: Without dead ends: 31395 [2022-12-14 04:59:24,363 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 [2022-12-14 04:59:24,363 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 41 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:59:24,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 42 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 04:59:24,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31395 states. [2022-12-14 04:59:24,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31395 to 31395. [2022-12-14 04:59:24,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31395 states, 31383 states have (on average 5.177038524041679) internal successors, (162471), 31394 states have internal predecessors, (162471), 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) [2022-12-14 04:59:25,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31395 states to 31395 states and 162471 transitions. [2022-12-14 04:59:25,309 INFO L78 Accepts]: Start accepts. Automaton has 31395 states and 162471 transitions. Word has length 13 [2022-12-14 04:59:25,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:59:25,309 INFO L495 AbstractCegarLoop]: Abstraction has 31395 states and 162471 transitions. [2022-12-14 04:59:25,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) [2022-12-14 04:59:25,309 INFO L276 IsEmpty]: Start isEmpty. Operand 31395 states and 162471 transitions. [2022-12-14 04:59:25,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 04:59:25,310 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:59:25,310 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-14 04:59:25,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-12-14 04:59:25,310 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-14 04:59:25,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:59:25,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1603193695, now seen corresponding path program 1 times [2022-12-14 04:59:25,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:59:25,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598483847] [2022-12-14 04:59:25,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:59:25,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:59:25,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:59:25,363 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 04:59:25,363 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:59:25,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598483847] [2022-12-14 04:59:25,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598483847] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:59:25,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:59:25,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 04:59:25,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202880098] [2022-12-14 04:59:25,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:59:25,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:59:25,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:59:25,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:59:25,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:59:25,365 INFO L87 Difference]: Start difference. First operand 31395 states and 162471 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) [2022-12-14 04:59:25,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:59:25,768 INFO L93 Difference]: Finished difference Result 34851 states and 180039 transitions. [2022-12-14 04:59:25,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:59:25,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 13 [2022-12-14 04:59:25,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:59:25,958 INFO L225 Difference]: With dead ends: 34851 [2022-12-14 04:59:25,958 INFO L226 Difference]: Without dead ends: 34851 [2022-12-14 04:59:25,958 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 [2022-12-14 04:59:25,959 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 32 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:59:25,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 46 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 04:59:26,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34851 states. [2022-12-14 04:59:26,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34851 to 34851. [2022-12-14 04:59:26,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34851 states, 34839 states have (on average 5.167743046585723) internal successors, (180039), 34850 states have internal predecessors, (180039), 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) [2022-12-14 04:59:27,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34851 states to 34851 states and 180039 transitions. [2022-12-14 04:59:27,005 INFO L78 Accepts]: Start accepts. Automaton has 34851 states and 180039 transitions. Word has length 13 [2022-12-14 04:59:27,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:59:27,006 INFO L495 AbstractCegarLoop]: Abstraction has 34851 states and 180039 transitions. [2022-12-14 04:59:27,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) [2022-12-14 04:59:27,006 INFO L276 IsEmpty]: Start isEmpty. Operand 34851 states and 180039 transitions. [2022-12-14 04:59:27,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 04:59:27,006 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:59:27,006 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:59:27,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-12-14 04:59:27,007 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-14 04:59:27,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:59:27,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1840600136, now seen corresponding path program 1 times [2022-12-14 04:59:27,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:59:27,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259412669] [2022-12-14 04:59:27,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:59:27,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:59:27,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:59:27,027 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 04:59:27,027 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:59:27,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259412669] [2022-12-14 04:59:27,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259412669] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:59:27,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:59:27,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 04:59:27,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986376008] [2022-12-14 04:59:27,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:59:27,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:59:27,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:59:27,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:59:27,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:59:27,029 INFO L87 Difference]: Start difference. First operand 34851 states and 180039 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:59:27,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:59:27,425 INFO L93 Difference]: Finished difference Result 31395 states and 162471 transitions. [2022-12-14 04:59:27,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:59:27,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-12-14 04:59:27,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:59:27,551 INFO L225 Difference]: With dead ends: 31395 [2022-12-14 04:59:27,551 INFO L226 Difference]: Without dead ends: 31395 [2022-12-14 04:59:27,552 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 [2022-12-14 04:59:27,552 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 39 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:59:27,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 43 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 04:59:27,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31395 states. [2022-12-14 04:59:28,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31395 to 31395. [2022-12-14 04:59:28,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31395 states, 31387 states have (on average 5.1763787555357315) internal successors, (162471), 31394 states have internal predecessors, (162471), 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) [2022-12-14 04:59:28,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31395 states to 31395 states and 162471 transitions. [2022-12-14 04:59:28,416 INFO L78 Accepts]: Start accepts. Automaton has 31395 states and 162471 transitions. Word has length 14 [2022-12-14 04:59:28,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:59:28,416 INFO L495 AbstractCegarLoop]: Abstraction has 31395 states and 162471 transitions. [2022-12-14 04:59:28,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:59:28,416 INFO L276 IsEmpty]: Start isEmpty. Operand 31395 states and 162471 transitions. [2022-12-14 04:59:28,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 04:59:28,417 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:59:28,417 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:59:28,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-12-14 04:59:28,417 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-14 04:59:28,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:59:28,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1840600594, now seen corresponding path program 1 times [2022-12-14 04:59:28,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:59:28,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753814693] [2022-12-14 04:59:28,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:59:28,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:59:28,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:59:28,438 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 04:59:28,438 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:59:28,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753814693] [2022-12-14 04:59:28,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753814693] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:59:28,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897218660] [2022-12-14 04:59:28,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:59:28,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:59:28,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c93c85a5-7d25-4157-b92d-5b71799de511/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:59:28,439 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c93c85a5-7d25-4157-b92d-5b71799de511/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:59:28,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c93c85a5-7d25-4157-b92d-5b71799de511/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 04:59:28,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:59:28,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 04:59:28,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:59:28,501 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 04:59:28,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:59:28,518 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 04:59:28,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897218660] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 04:59:28,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 04:59:28,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 6 [2022-12-14 04:59:28,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682122730] [2022-12-14 04:59:28,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:59:28,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 04:59:28,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:59:28,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 04:59:28,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 04:59:28,519 INFO L87 Difference]: Start difference. First operand 31395 states and 162471 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:59:28,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:59:28,739 INFO L93 Difference]: Finished difference Result 27939 states and 144903 transitions. [2022-12-14 04:59:28,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:59:28,740 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-12-14 04:59:28,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:59:28,851 INFO L225 Difference]: With dead ends: 27939 [2022-12-14 04:59:28,851 INFO L226 Difference]: Without dead ends: 27939 [2022-12-14 04:59:28,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 04:59:28,851 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 38 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:59:28,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 55 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 04:59:28,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27939 states. [2022-12-14 04:59:29,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27939 to 27939. [2022-12-14 04:59:29,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27939 states, 27935 states have (on average 5.187148738142116) internal successors, (144903), 27938 states have internal predecessors, (144903), 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) [2022-12-14 04:59:29,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27939 states to 27939 states and 144903 transitions. [2022-12-14 04:59:29,905 INFO L78 Accepts]: Start accepts. Automaton has 27939 states and 144903 transitions. Word has length 14 [2022-12-14 04:59:29,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:59:29,905 INFO L495 AbstractCegarLoop]: Abstraction has 27939 states and 144903 transitions. [2022-12-14 04:59:29,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:59:29,905 INFO L276 IsEmpty]: Start isEmpty. Operand 27939 states and 144903 transitions. [2022-12-14 04:59:29,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 04:59:29,908 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:59:29,908 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:59:29,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c93c85a5-7d25-4157-b92d-5b71799de511/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-14 04:59:30,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c93c85a5-7d25-4157-b92d-5b71799de511/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-12-14 04:59:30,110 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-14 04:59:30,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:59:30,111 INFO L85 PathProgramCache]: Analyzing trace with hash 835964681, now seen corresponding path program 1 times [2022-12-14 04:59:30,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:59:30,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356948085] [2022-12-14 04:59:30,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:59:30,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:59:30,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:59:30,154 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 04:59:30,154 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:59:30,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356948085] [2022-12-14 04:59:30,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356948085] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:59:30,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:59:30,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 04:59:30,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167871602] [2022-12-14 04:59:30,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:59:30,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:59:30,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:59:30,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:59:30,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:59:30,155 INFO L87 Difference]: Start difference. First operand 27939 states and 144903 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:59:30,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:59:30,436 INFO L93 Difference]: Finished difference Result 25379 states and 131655 transitions. [2022-12-14 04:59:30,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:59:30,436 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-12-14 04:59:30,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:59:30,562 INFO L225 Difference]: With dead ends: 25379 [2022-12-14 04:59:30,562 INFO L226 Difference]: Without dead ends: 25379 [2022-12-14 04:59:30,562 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 [2022-12-14 04:59:30,562 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 37 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 04:59:30,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 39 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 04:59:30,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25379 states. [2022-12-14 04:59:31,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25379 to 25379. [2022-12-14 04:59:31,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25379 states, 25376 states have (on average 5.1881699243379575) internal successors, (131655), 25378 states have internal predecessors, (131655), 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) [2022-12-14 04:59:31,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25379 states to 25379 states and 131655 transitions. [2022-12-14 04:59:31,288 INFO L78 Accepts]: Start accepts. Automaton has 25379 states and 131655 transitions. Word has length 17 [2022-12-14 04:59:31,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:59:31,289 INFO L495 AbstractCegarLoop]: Abstraction has 25379 states and 131655 transitions. [2022-12-14 04:59:31,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:59:31,289 INFO L276 IsEmpty]: Start isEmpty. Operand 25379 states and 131655 transitions. [2022-12-14 04:59:31,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 04:59:31,290 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:59:31,290 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:59:31,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-12-14 04:59:31,290 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-14 04:59:31,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:59:31,290 INFO L85 PathProgramCache]: Analyzing trace with hash 835964428, now seen corresponding path program 1 times [2022-12-14 04:59:31,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:59:31,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956406382] [2022-12-14 04:59:31,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:59:31,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:59:31,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:59:31,319 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 04:59:31,319 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:59:31,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956406382] [2022-12-14 04:59:31,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956406382] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:59:31,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:59:31,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 04:59:31,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551249189] [2022-12-14 04:59:31,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:59:31,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:59:31,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:59:31,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:59:31,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:59:31,320 INFO L87 Difference]: Start difference. First operand 25379 states and 131655 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:59:31,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:59:31,603 INFO L93 Difference]: Finished difference Result 22819 states and 118407 transitions. [2022-12-14 04:59:31,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:59:31,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-12-14 04:59:31,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:59:31,690 INFO L225 Difference]: With dead ends: 22819 [2022-12-14 04:59:31,690 INFO L226 Difference]: Without dead ends: 22819 [2022-12-14 04:59:31,691 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 [2022-12-14 04:59:31,691 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 36 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 04:59:31,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 39 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 04:59:31,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22819 states. [2022-12-14 04:59:32,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22819 to 22819. [2022-12-14 04:59:32,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22819 states, 22817 states have (on average 5.1894201691721085) internal successors, (118407), 22818 states have internal predecessors, (118407), 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) [2022-12-14 04:59:32,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22819 states to 22819 states and 118407 transitions. [2022-12-14 04:59:32,203 INFO L78 Accepts]: Start accepts. Automaton has 22819 states and 118407 transitions. Word has length 17 [2022-12-14 04:59:32,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:59:32,203 INFO L495 AbstractCegarLoop]: Abstraction has 22819 states and 118407 transitions. [2022-12-14 04:59:32,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:59:32,203 INFO L276 IsEmpty]: Start isEmpty. Operand 22819 states and 118407 transitions. [2022-12-14 04:59:32,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 04:59:32,205 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:59:32,205 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:59:32,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-12-14 04:59:32,205 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-14 04:59:32,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:59:32,205 INFO L85 PathProgramCache]: Analyzing trace with hash 835964836, now seen corresponding path program 1 times [2022-12-14 04:59:32,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:59:32,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518245653] [2022-12-14 04:59:32,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:59:32,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:59:32,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:59:32,239 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 04:59:32,239 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:59:32,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518245653] [2022-12-14 04:59:32,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518245653] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:59:32,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:59:32,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 04:59:32,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590454395] [2022-12-14 04:59:32,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:59:32,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:59:32,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:59:32,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:59:32,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:59:32,241 INFO L87 Difference]: Start difference. First operand 22819 states and 118407 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:59:32,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:59:32,507 INFO L93 Difference]: Finished difference Result 20259 states and 105159 transitions. [2022-12-14 04:59:32,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:59:32,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-12-14 04:59:32,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:59:32,576 INFO L225 Difference]: With dead ends: 20259 [2022-12-14 04:59:32,576 INFO L226 Difference]: Without dead ends: 20259 [2022-12-14 04:59:32,576 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 [2022-12-14 04:59:32,576 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 34 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 04:59:32,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 39 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 04:59:32,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20259 states. [2022-12-14 04:59:32,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20259 to 20259. [2022-12-14 04:59:33,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20259 states, 20258 states have (on average 5.19098627702636) internal successors, (105159), 20258 states have internal predecessors, (105159), 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) [2022-12-14 04:59:33,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20259 states to 20259 states and 105159 transitions. [2022-12-14 04:59:33,094 INFO L78 Accepts]: Start accepts. Automaton has 20259 states and 105159 transitions. Word has length 17 [2022-12-14 04:59:33,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:59:33,094 INFO L495 AbstractCegarLoop]: Abstraction has 20259 states and 105159 transitions. [2022-12-14 04:59:33,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:59:33,094 INFO L276 IsEmpty]: Start isEmpty. Operand 20259 states and 105159 transitions. [2022-12-14 04:59:33,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-14 04:59:33,096 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:59:33,096 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2022-12-14 04:59:33,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-12-14 04:59:33,096 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-14 04:59:33,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:59:33,097 INFO L85 PathProgramCache]: Analyzing trace with hash 186297538, now seen corresponding path program 1 times [2022-12-14 04:59:33,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:59:33,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260476923] [2022-12-14 04:59:33,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:59:33,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:59:33,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 04:59:33,104 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 04:59:33,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 04:59:33,110 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 04:59:33,110 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 04:59:33,111 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-12-14 04:59:33,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-12-14 04:59:33,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-12-14 04:59:33,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-12-14 04:59:33,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-12-14 04:59:33,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-12-14 04:59:33,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-12-14 04:59:33,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-12-14 04:59:33,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-12-14 04:59:33,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-12-14 04:59:33,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-12-14 04:59:33,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-12-14 04:59:33,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-12-14 04:59:33,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-12-14 04:59:33,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-12-14 04:59:33,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-12-14 04:59:33,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-12-14 04:59:33,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-12-14 04:59:33,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-12-14 04:59:33,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-12-14 04:59:33,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-12-14 04:59:33,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-12-14 04:59:33,112 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:59:33,112 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-14 04:59:33,112 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-12-14 04:59:33,133 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-14 04:59:33,136 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 04:59:33,136 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 287 places, 312 transitions, 669 flow [2022-12-14 04:59:33,137 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 287 places, 312 transitions, 669 flow [2022-12-14 04:59:33,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 287 places, 312 transitions, 669 flow [2022-12-14 04:59:33,199 INFO L130 PetriNetUnfolder]: 41/375 cut-off events. [2022-12-14 04:59:33,199 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-12-14 04:59:33,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 406 conditions, 375 events. 41/375 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1243 event pairs, 0 based on Foata normal form. 0/308 useless extension candidates. Maximal degree in co-relation 320. Up to 12 conditions per place. [2022-12-14 04:59:33,227 INFO L119 LiptonReduction]: Number of co-enabled transitions 66960 [2022-12-14 04:59:39,151 INFO L134 LiptonReduction]: Checked pairs total: 96028 [2022-12-14 04:59:39,152 INFO L136 LiptonReduction]: Total number of compositions: 341 [2022-12-14 04:59:39,153 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 72 places, 76 transitions, 197 flow [2022-12-14 05:00:11,394 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1042924 states, 1035899 states have (on average 6.696633552112706) internal successors, (6937036), 1042923 states have internal predecessors, (6937036), 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) [2022-12-14 05:00:11,395 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 05:00:11,395 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;@6eb1d5d0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 05:00:11,395 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-12-14 05:00:12,963 INFO L276 IsEmpty]: Start isEmpty. Operand has 1042924 states, 1035899 states have (on average 6.696633552112706) internal successors, (6937036), 1042923 states have internal predecessors, (6937036), 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) [2022-12-14 05:00:12,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 05:00:12,964 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:00:12,964 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 05:00:12,964 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-14 05:00:12,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:00:12,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1801632952, now seen corresponding path program 1 times [2022-12-14 05:00:12,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:00:12,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017609640] [2022-12-14 05:00:12,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:00:12,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:00:12,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:00:12,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:00:12,993 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:00:12,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017609640] [2022-12-14 05:00:12,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017609640] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:00:12,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:00:12,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 05:00:12,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685867977] [2022-12-14 05:00:12,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:00:12,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:00:12,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:00:12,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:00:12,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:00:14,551 INFO L87 Difference]: Start difference. First operand has 1042924 states, 1035899 states have (on average 6.696633552112706) internal successors, (6937036), 1042923 states have internal predecessors, (6937036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)