./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label41.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e96c54-35b6-4252-985c-e398cf6f6a61/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e96c54-35b6-4252-985c-e398cf6f6a61/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_72e96c54-35b6-4252-985c-e398cf6f6a61/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e96c54-35b6-4252-985c-e398cf6f6a61/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label41.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e96c54-35b6-4252-985c-e398cf6f6a61/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e96c54-35b6-4252-985c-e398cf6f6a61/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 40a5d6cfc2906fb78e842e2acc20834b9d9ef51616470f27f80518312cafa40b --- 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 13:03:58,809 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 13:03:58,810 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 13:03:58,823 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 13:03:58,823 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 13:03:58,824 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 13:03:58,825 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 13:03:58,826 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 13:03:58,827 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 13:03:58,828 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 13:03:58,828 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 13:03:58,829 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 13:03:58,830 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 13:03:58,830 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 13:03:58,831 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 13:03:58,832 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 13:03:58,832 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 13:03:58,833 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 13:03:58,835 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 13:03:58,836 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 13:03:58,837 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 13:03:58,838 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 13:03:58,839 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 13:03:58,839 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 13:03:58,842 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 13:03:58,842 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 13:03:58,842 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 13:03:58,843 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 13:03:58,843 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 13:03:58,844 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 13:03:58,844 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 13:03:58,845 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 13:03:58,846 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 13:03:58,846 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 13:03:58,847 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 13:03:58,847 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 13:03:58,848 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 13:03:58,848 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 13:03:58,848 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 13:03:58,849 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 13:03:58,850 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 13:03:58,850 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e96c54-35b6-4252-985c-e398cf6f6a61/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 13:03:58,866 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 13:03:58,866 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 13:03:58,866 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 13:03:58,867 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 13:03:58,867 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 13:03:58,867 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 13:03:58,868 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 13:03:58,868 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 13:03:58,868 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 13:03:58,868 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 13:03:58,869 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 13:03:58,869 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 13:03:58,869 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 13:03:58,869 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 13:03:58,869 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 13:03:58,870 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 13:03:58,870 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 13:03:58,870 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 13:03:58,871 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 13:03:58,871 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 13:03:58,871 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 13:03:58,871 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 13:03:58,871 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 13:03:58,871 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 13:03:58,872 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 13:03:58,872 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 13:03:58,872 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 13:03:58,872 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 13:03:58,872 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 13:03:58,872 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 13:03:58,873 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 13:03:58,873 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 13:03:58,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:03:58,873 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 13:03:58,873 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 13:03:58,873 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 13:03:58,874 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 13:03:58,874 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 13:03:58,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 13:03:58,874 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 13:03:58,874 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 13:03:58,874 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_72e96c54-35b6-4252-985c-e398cf6f6a61/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e96c54-35b6-4252-985c-e398cf6f6a61/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40a5d6cfc2906fb78e842e2acc20834b9d9ef51616470f27f80518312cafa40b [2022-12-14 13:03:59,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 13:03:59,065 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 13:03:59,068 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 13:03:59,069 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 13:03:59,069 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 13:03:59,070 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e96c54-35b6-4252-985c-e398cf6f6a61/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/eca-rers2012/Problem02_label41.c [2022-12-14 13:04:01,665 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 13:04:01,861 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 13:04:01,861 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e96c54-35b6-4252-985c-e398cf6f6a61/sv-benchmarks/c/eca-rers2012/Problem02_label41.c [2022-12-14 13:04:01,870 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e96c54-35b6-4252-985c-e398cf6f6a61/bin/utaipan-gh47qXpMRh/data/7cd4efb2b/e7a41c7b0d4444508b92030e8190255e/FLAGf44d56351 [2022-12-14 13:04:02,237 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e96c54-35b6-4252-985c-e398cf6f6a61/bin/utaipan-gh47qXpMRh/data/7cd4efb2b/e7a41c7b0d4444508b92030e8190255e [2022-12-14 13:04:02,240 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 13:04:02,241 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 13:04:02,243 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 13:04:02,243 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 13:04:02,248 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 13:04:02,249 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:04:02" (1/1) ... [2022-12-14 13:04:02,250 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48143287 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:04:02, skipping insertion in model container [2022-12-14 13:04:02,251 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:04:02" (1/1) ... [2022-12-14 13:04:02,259 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 13:04:02,291 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 13:04:02,477 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_72e96c54-35b6-4252-985c-e398cf6f6a61/sv-benchmarks/c/eca-rers2012/Problem02_label41.c[15650,15663] [2022-12-14 13:04:02,506 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:04:02,514 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 13:04:02,570 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_72e96c54-35b6-4252-985c-e398cf6f6a61/sv-benchmarks/c/eca-rers2012/Problem02_label41.c[15650,15663] [2022-12-14 13:04:02,581 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:04:02,591 INFO L208 MainTranslator]: Completed translation [2022-12-14 13:04:02,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:04:02 WrapperNode [2022-12-14 13:04:02,592 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 13:04:02,592 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 13:04:02,592 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 13:04:02,592 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 13:04:02,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:04:02" (1/1) ... [2022-12-14 13:04:02,609 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:04:02" (1/1) ... [2022-12-14 13:04:02,639 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 668 [2022-12-14 13:04:02,639 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 13:04:02,640 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 13:04:02,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 13:04:02,640 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 13:04:02,647 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:04:02" (1/1) ... [2022-12-14 13:04:02,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:04:02" (1/1) ... [2022-12-14 13:04:02,650 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:04:02" (1/1) ... [2022-12-14 13:04:02,650 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:04:02" (1/1) ... [2022-12-14 13:04:02,661 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:04:02" (1/1) ... [2022-12-14 13:04:02,666 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:04:02" (1/1) ... [2022-12-14 13:04:02,670 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:04:02" (1/1) ... [2022-12-14 13:04:02,672 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:04:02" (1/1) ... [2022-12-14 13:04:02,677 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 13:04:02,677 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 13:04:02,677 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 13:04:02,677 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 13:04:02,678 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:04:02" (1/1) ... [2022-12-14 13:04:02,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:04:02,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e96c54-35b6-4252-985c-e398cf6f6a61/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:04:02,703 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e96c54-35b6-4252-985c-e398cf6f6a61/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 13:04:02,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e96c54-35b6-4252-985c-e398cf6f6a61/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 13:04:02,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 13:04:02,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 13:04:02,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 13:04:02,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 13:04:02,801 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 13:04:02,803 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 13:04:03,482 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 13:04:03,677 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 13:04:03,677 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 13:04:03,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:04:03 BoogieIcfgContainer [2022-12-14 13:04:03,680 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 13:04:03,683 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 13:04:03,683 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 13:04:03,686 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 13:04:03,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:04:02" (1/3) ... [2022-12-14 13:04:03,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@632e22c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:04:03, skipping insertion in model container [2022-12-14 13:04:03,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:04:02" (2/3) ... [2022-12-14 13:04:03,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@632e22c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:04:03, skipping insertion in model container [2022-12-14 13:04:03,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:04:03" (3/3) ... [2022-12-14 13:04:03,688 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label41.c [2022-12-14 13:04:03,707 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 13:04:03,707 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 13:04:03,752 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 13:04:03,757 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;@1f997a5d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 13:04:03,757 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 13:04:03,760 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 0 states have call successors, (0), 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 13:04:03,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-14 13:04:03,767 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:04:03,767 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:04:03,768 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:04:03,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:04:03,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1814570964, now seen corresponding path program 1 times [2022-12-14 13:04:03,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:04:03,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251826696] [2022-12-14 13:04:03,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:04:03,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:04:03,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:04:04,067 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 13:04:04,067 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:04:04,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251826696] [2022-12-14 13:04:04,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251826696] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:04:04,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:04:04,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 13:04:04,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888924447] [2022-12-14 13:04:04,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:04:04,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:04:04,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:04:04,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:04:04,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:04:04,096 INFO L87 Difference]: Start difference. First operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:04:04,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:04:04,445 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2022-12-14 13:04:04,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:04:04,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-12-14 13:04:04,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:04:04,454 INFO L225 Difference]: With dead ends: 251 [2022-12-14 13:04:04,454 INFO L226 Difference]: Without dead ends: 163 [2022-12-14 13:04:04,457 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 13:04:04,459 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 47 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 13:04:04,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 23 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 13:04:04,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-12-14 13:04:04,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2022-12-14 13:04:04,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.8395061728395061) internal successors, (298), 162 states have internal predecessors, (298), 0 states have call successors, (0), 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 13:04:04,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 298 transitions. [2022-12-14 13:04:04,496 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 298 transitions. Word has length 80 [2022-12-14 13:04:04,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:04:04,497 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 298 transitions. [2022-12-14 13:04:04,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:04:04,497 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 298 transitions. [2022-12-14 13:04:04,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-12-14 13:04:04,499 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:04:04,499 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:04:04,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 13:04:04,500 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:04:04,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:04:04,500 INFO L85 PathProgramCache]: Analyzing trace with hash 625143625, now seen corresponding path program 1 times [2022-12-14 13:04:04,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:04:04,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989396141] [2022-12-14 13:04:04,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:04:04,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:04:04,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:04:04,728 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:04:04,728 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:04:04,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989396141] [2022-12-14 13:04:04,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989396141] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:04:04,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:04:04,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 13:04:04,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450130306] [2022-12-14 13:04:04,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:04:04,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:04:04,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:04:04,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:04:04,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:04:04,732 INFO L87 Difference]: Start difference. First operand 163 states and 298 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 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 13:04:05,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:04:05,028 INFO L93 Difference]: Finished difference Result 485 states and 891 transitions. [2022-12-14 13:04:05,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:04:05,028 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2022-12-14 13:04:05,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:04:05,030 INFO L225 Difference]: With dead ends: 485 [2022-12-14 13:04:05,030 INFO L226 Difference]: Without dead ends: 323 [2022-12-14 13:04:05,031 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 13:04:05,031 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 78 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 13:04:05,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 66 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 13:04:05,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2022-12-14 13:04:05,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2022-12-14 13:04:05,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 322 states have (on average 1.5) internal successors, (483), 322 states have internal predecessors, (483), 0 states have call successors, (0), 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 13:04:05,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 483 transitions. [2022-12-14 13:04:05,047 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 483 transitions. Word has length 84 [2022-12-14 13:04:05,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:04:05,047 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 483 transitions. [2022-12-14 13:04:05,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 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 13:04:05,047 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 483 transitions. [2022-12-14 13:04:05,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-12-14 13:04:05,050 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:04:05,050 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:04:05,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 13:04:05,050 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:04:05,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:04:05,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1659819540, now seen corresponding path program 1 times [2022-12-14 13:04:05,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:04:05,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154003990] [2022-12-14 13:04:05,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:04:05,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:04:05,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:04:05,177 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:04:05,177 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:04:05,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154003990] [2022-12-14 13:04:05,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154003990] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:04:05,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:04:05,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 13:04:05,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649095346] [2022-12-14 13:04:05,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:04:05,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:04:05,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:04:05,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:04:05,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:04:05,180 INFO L87 Difference]: Start difference. First operand 323 states and 483 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 13:04:05,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:04:05,477 INFO L93 Difference]: Finished difference Result 805 states and 1261 transitions. [2022-12-14 13:04:05,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:04:05,478 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2022-12-14 13:04:05,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:04:05,481 INFO L225 Difference]: With dead ends: 805 [2022-12-14 13:04:05,481 INFO L226 Difference]: Without dead ends: 483 [2022-12-14 13:04:05,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:04:05,483 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 77 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 13:04:05,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 139 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 13:04:05,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-12-14 13:04:05,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2022-12-14 13:04:05,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.396265560165975) internal successors, (673), 482 states have internal predecessors, (673), 0 states have call successors, (0), 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 13:04:05,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 673 transitions. [2022-12-14 13:04:05,494 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 673 transitions. Word has length 89 [2022-12-14 13:04:05,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:04:05,494 INFO L495 AbstractCegarLoop]: Abstraction has 483 states and 673 transitions. [2022-12-14 13:04:05,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 13:04:05,494 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 673 transitions. [2022-12-14 13:04:05,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-14 13:04:05,496 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:04:05,496 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:04:05,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 13:04:05,497 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:04:05,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:04:05,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1696179864, now seen corresponding path program 1 times [2022-12-14 13:04:05,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:04:05,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194620041] [2022-12-14 13:04:05,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:04:05,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:04:05,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:04:05,536 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:04:05,536 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:04:05,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194620041] [2022-12-14 13:04:05,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194620041] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:04:05,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:04:05,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 13:04:05,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240180033] [2022-12-14 13:04:05,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:04:05,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:04:05,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:04:05,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:04:05,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:04:05,538 INFO L87 Difference]: Start difference. First operand 483 states and 673 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 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 13:04:05,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:04:05,790 INFO L93 Difference]: Finished difference Result 1285 states and 1831 transitions. [2022-12-14 13:04:05,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:04:05,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2022-12-14 13:04:05,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:04:05,793 INFO L225 Difference]: With dead ends: 1285 [2022-12-14 13:04:05,793 INFO L226 Difference]: Without dead ends: 803 [2022-12-14 13:04:05,794 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 13:04:05,795 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 111 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 13:04:05,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 28 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 13:04:05,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2022-12-14 13:04:05,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 803. [2022-12-14 13:04:05,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 802 states have (on average 1.35785536159601) internal successors, (1089), 802 states have internal predecessors, (1089), 0 states have call successors, (0), 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 13:04:05,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1089 transitions. [2022-12-14 13:04:05,819 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1089 transitions. Word has length 90 [2022-12-14 13:04:05,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:04:05,820 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 1089 transitions. [2022-12-14 13:04:05,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 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 13:04:05,820 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1089 transitions. [2022-12-14 13:04:05,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-12-14 13:04:05,823 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:04:05,824 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:04:05,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 13:04:05,824 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:04:05,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:04:05,824 INFO L85 PathProgramCache]: Analyzing trace with hash -80530762, now seen corresponding path program 1 times [2022-12-14 13:04:05,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:04:05,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038741389] [2022-12-14 13:04:05,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:04:05,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:04:05,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:04:05,943 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:04:05,944 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:04:05,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038741389] [2022-12-14 13:04:05,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038741389] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:04:05,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:04:05,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 13:04:05,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526468071] [2022-12-14 13:04:05,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:04:05,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:04:05,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:04:05,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:04:05,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:04:05,946 INFO L87 Difference]: Start difference. First operand 803 states and 1089 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 13:04:06,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:04:06,187 INFO L93 Difference]: Finished difference Result 1925 states and 2603 transitions. [2022-12-14 13:04:06,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:04:06,187 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2022-12-14 13:04:06,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:04:06,191 INFO L225 Difference]: With dead ends: 1925 [2022-12-14 13:04:06,191 INFO L226 Difference]: Without dead ends: 1123 [2022-12-14 13:04:06,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:04:06,193 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 78 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 13:04:06,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 147 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 13:04:06,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2022-12-14 13:04:06,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1123. [2022-12-14 13:04:06,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 1.2780748663101604) internal successors, (1434), 1122 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 13:04:06,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1434 transitions. [2022-12-14 13:04:06,220 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1434 transitions. Word has length 93 [2022-12-14 13:04:06,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:04:06,220 INFO L495 AbstractCegarLoop]: Abstraction has 1123 states and 1434 transitions. [2022-12-14 13:04:06,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 13:04:06,221 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1434 transitions. [2022-12-14 13:04:06,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-12-14 13:04:06,223 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:04:06,223 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:04:06,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 13:04:06,223 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:04:06,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:04:06,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1105143259, now seen corresponding path program 1 times [2022-12-14 13:04:06,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:04:06,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17024367] [2022-12-14 13:04:06,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:04:06,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:04:06,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:04:06,282 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:04:06,282 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:04:06,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17024367] [2022-12-14 13:04:06,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17024367] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:04:06,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:04:06,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 13:04:06,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107504367] [2022-12-14 13:04:06,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:04:06,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:04:06,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:04:06,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:04:06,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:04:06,284 INFO L87 Difference]: Start difference. First operand 1123 states and 1434 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 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 13:04:06,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:04:06,518 INFO L93 Difference]: Finished difference Result 2245 states and 2867 transitions. [2022-12-14 13:04:06,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:04:06,519 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2022-12-14 13:04:06,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:04:06,523 INFO L225 Difference]: With dead ends: 2245 [2022-12-14 13:04:06,523 INFO L226 Difference]: Without dead ends: 1123 [2022-12-14 13:04:06,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:04:06,525 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 79 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 13:04:06,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 16 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 13:04:06,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2022-12-14 13:04:06,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1123. [2022-12-14 13:04:06,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 1.2290552584670231) internal successors, (1379), 1122 states have internal predecessors, (1379), 0 states have call successors, (0), 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 13:04:06,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1379 transitions. [2022-12-14 13:04:06,542 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1379 transitions. Word has length 109 [2022-12-14 13:04:06,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:04:06,542 INFO L495 AbstractCegarLoop]: Abstraction has 1123 states and 1379 transitions. [2022-12-14 13:04:06,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 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 13:04:06,542 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1379 transitions. [2022-12-14 13:04:06,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-12-14 13:04:06,544 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:04:06,544 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:04:06,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 13:04:06,544 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:04:06,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:04:06,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1872796143, now seen corresponding path program 1 times [2022-12-14 13:04:06,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:04:06,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141922163] [2022-12-14 13:04:06,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:04:06,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:04:06,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:04:06,712 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 32 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:04:06,712 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:04:06,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141922163] [2022-12-14 13:04:06,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141922163] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:04:06,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058975972] [2022-12-14 13:04:06,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:04:06,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:04:06,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e96c54-35b6-4252-985c-e398cf6f6a61/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:04:06,714 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e96c54-35b6-4252-985c-e398cf6f6a61/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:04:06,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e96c54-35b6-4252-985c-e398cf6f6a61/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 13:04:06,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:04:06,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 13:04:06,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:04:06,900 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 13:04:06,900 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 13:04:06,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058975972] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:04:06,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 13:04:06,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-12-14 13:04:06,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967375179] [2022-12-14 13:04:06,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:04:06,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:04:06,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:04:06,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:04:06,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 13:04:06,902 INFO L87 Difference]: Start difference. First operand 1123 states and 1379 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 13:04:07,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:04:07,169 INFO L93 Difference]: Finished difference Result 2405 states and 3033 transitions. [2022-12-14 13:04:07,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:04:07,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 113 [2022-12-14 13:04:07,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:04:07,173 INFO L225 Difference]: With dead ends: 2405 [2022-12-14 13:04:07,173 INFO L226 Difference]: Without dead ends: 1283 [2022-12-14 13:04:07,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 13:04:07,175 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 13:04:07,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 131 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 13:04:07,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2022-12-14 13:04:07,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 1283. [2022-12-14 13:04:07,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1283 states, 1282 states have (on average 1.2316692667706708) internal successors, (1579), 1282 states have internal predecessors, (1579), 0 states have call successors, (0), 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 13:04:07,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 1579 transitions. [2022-12-14 13:04:07,204 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 1579 transitions. Word has length 113 [2022-12-14 13:04:07,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:04:07,204 INFO L495 AbstractCegarLoop]: Abstraction has 1283 states and 1579 transitions. [2022-12-14 13:04:07,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 13:04:07,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 1579 transitions. [2022-12-14 13:04:07,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-12-14 13:04:07,207 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:04:07,207 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:04:07,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e96c54-35b6-4252-985c-e398cf6f6a61/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 13:04:07,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e96c54-35b6-4252-985c-e398cf6f6a61/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-14 13:04:07,408 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:04:07,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:04:07,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1413206854, now seen corresponding path program 1 times [2022-12-14 13:04:07,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:04:07,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503969297] [2022-12-14 13:04:07,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:04:07,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:04:07,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:04:07,579 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 13:04:07,580 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:04:07,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503969297] [2022-12-14 13:04:07,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503969297] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:04:07,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:04:07,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 13:04:07,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636614053] [2022-12-14 13:04:07,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:04:07,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 13:04:07,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:04:07,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 13:04:07,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 13:04:07,581 INFO L87 Difference]: Start difference. First operand 1283 states and 1579 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 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 13:04:07,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:04:07,981 INFO L93 Difference]: Finished difference Result 3043 states and 3761 transitions. [2022-12-14 13:04:07,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 13:04:07,981 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 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 114 [2022-12-14 13:04:07,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:04:07,987 INFO L225 Difference]: With dead ends: 3043 [2022-12-14 13:04:07,987 INFO L226 Difference]: Without dead ends: 1683 [2022-12-14 13:04:07,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 13:04:07,988 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 78 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 13:04:07,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 46 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 13:04:07,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1683 states. [2022-12-14 13:04:08,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1683 to 1363. [2022-12-14 13:04:08,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1363 states, 1362 states have (on average 1.2305433186490455) internal successors, (1676), 1362 states have internal predecessors, (1676), 0 states have call successors, (0), 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 13:04:08,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1676 transitions. [2022-12-14 13:04:08,008 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1676 transitions. Word has length 114 [2022-12-14 13:04:08,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:04:08,008 INFO L495 AbstractCegarLoop]: Abstraction has 1363 states and 1676 transitions. [2022-12-14 13:04:08,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 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 13:04:08,008 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1676 transitions. [2022-12-14 13:04:08,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-12-14 13:04:08,010 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:04:08,010 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:04:08,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 13:04:08,010 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:04:08,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:04:08,010 INFO L85 PathProgramCache]: Analyzing trace with hash -857792788, now seen corresponding path program 1 times [2022-12-14 13:04:08,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:04:08,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501297644] [2022-12-14 13:04:08,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:04:08,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:04:08,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:04:08,177 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 54 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 13:04:08,177 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:04:08,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501297644] [2022-12-14 13:04:08,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501297644] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:04:08,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927030165] [2022-12-14 13:04:08,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:04:08,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:04:08,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e96c54-35b6-4252-985c-e398cf6f6a61/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:04:08,179 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e96c54-35b6-4252-985c-e398cf6f6a61/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:04:08,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e96c54-35b6-4252-985c-e398cf6f6a61/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 13:04:08,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:04:08,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 13:04:08,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:04:08,290 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 13:04:08,290 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 13:04:08,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927030165] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:04:08,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 13:04:08,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-12-14 13:04:08,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732563241] [2022-12-14 13:04:08,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:04:08,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:04:08,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:04:08,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:04:08,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 13:04:08,292 INFO L87 Difference]: Start difference. First operand 1363 states and 1676 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 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 13:04:08,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:04:08,545 INFO L93 Difference]: Finished difference Result 3125 states and 3912 transitions. [2022-12-14 13:04:08,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:04:08,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 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 127 [2022-12-14 13:04:08,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:04:08,551 INFO L225 Difference]: With dead ends: 3125 [2022-12-14 13:04:08,551 INFO L226 Difference]: Without dead ends: 1763 [2022-12-14 13:04:08,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 13:04:08,553 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 67 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 13:04:08,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 61 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 13:04:08,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1763 states. [2022-12-14 13:04:08,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1763 to 1683. [2022-12-14 13:04:08,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1683 states, 1682 states have (on average 1.2045184304399525) internal successors, (2026), 1682 states have internal predecessors, (2026), 0 states have call successors, (0), 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 13:04:08,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1683 states to 1683 states and 2026 transitions. [2022-12-14 13:04:08,588 INFO L78 Accepts]: Start accepts. Automaton has 1683 states and 2026 transitions. Word has length 127 [2022-12-14 13:04:08,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:04:08,588 INFO L495 AbstractCegarLoop]: Abstraction has 1683 states and 2026 transitions. [2022-12-14 13:04:08,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 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 13:04:08,588 INFO L276 IsEmpty]: Start isEmpty. Operand 1683 states and 2026 transitions. [2022-12-14 13:04:08,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-12-14 13:04:08,591 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:04:08,592 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:04:08,596 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e96c54-35b6-4252-985c-e398cf6f6a61/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 13:04:08,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e96c54-35b6-4252-985c-e398cf6f6a61/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:04:08,792 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:04:08,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:04:08,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1320242758, now seen corresponding path program 1 times [2022-12-14 13:04:08,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:04:08,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571189637] [2022-12-14 13:04:08,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:04:08,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:04:08,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:04:08,989 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 64 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-14 13:04:08,989 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:04:08,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571189637] [2022-12-14 13:04:08,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571189637] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:04:08,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365065597] [2022-12-14 13:04:08,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:04:08,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:04:08,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e96c54-35b6-4252-985c-e398cf6f6a61/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:04:08,990 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e96c54-35b6-4252-985c-e398cf6f6a61/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:04:08,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e96c54-35b6-4252-985c-e398cf6f6a61/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 13:04:09,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:04:09,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 13:04:09,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:04:09,164 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-12-14 13:04:09,165 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 13:04:09,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365065597] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:04:09,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 13:04:09,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-12-14 13:04:09,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591373679] [2022-12-14 13:04:09,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:04:09,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:04:09,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:04:09,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:04:09,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 13:04:09,166 INFO L87 Difference]: Start difference. First operand 1683 states and 2026 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:04:09,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:04:09,417 INFO L93 Difference]: Finished difference Result 3845 states and 4740 transitions. [2022-12-14 13:04:09,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:04:09,417 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-12-14 13:04:09,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:04:09,421 INFO L225 Difference]: With dead ends: 3845 [2022-12-14 13:04:09,421 INFO L226 Difference]: Without dead ends: 1843 [2022-12-14 13:04:09,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 13:04:09,423 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 8 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 13:04:09,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 132 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 13:04:09,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2022-12-14 13:04:09,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1683. [2022-12-14 13:04:09,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1683 states, 1682 states have (on average 1.1569560047562426) internal successors, (1946), 1682 states have internal predecessors, (1946), 0 states have call successors, (0), 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 13:04:09,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1683 states to 1683 states and 1946 transitions. [2022-12-14 13:04:09,445 INFO L78 Accepts]: Start accepts. Automaton has 1683 states and 1946 transitions. Word has length 140 [2022-12-14 13:04:09,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:04:09,445 INFO L495 AbstractCegarLoop]: Abstraction has 1683 states and 1946 transitions. [2022-12-14 13:04:09,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:04:09,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1683 states and 1946 transitions. [2022-12-14 13:04:09,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-12-14 13:04:09,447 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:04:09,447 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:04:09,452 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e96c54-35b6-4252-985c-e398cf6f6a61/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 13:04:09,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e96c54-35b6-4252-985c-e398cf6f6a61/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-14 13:04:09,648 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:04:09,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:04:09,648 INFO L85 PathProgramCache]: Analyzing trace with hash 154780592, now seen corresponding path program 1 times [2022-12-14 13:04:09,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:04:09,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918853716] [2022-12-14 13:04:09,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:04:09,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:04:09,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:04:09,830 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 77 proven. 8 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-12-14 13:04:09,830 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:04:09,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918853716] [2022-12-14 13:04:09,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918853716] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:04:09,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646122082] [2022-12-14 13:04:09,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:04:09,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:04:09,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e96c54-35b6-4252-985c-e398cf6f6a61/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:04:09,832 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e96c54-35b6-4252-985c-e398cf6f6a61/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:04:09,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e96c54-35b6-4252-985c-e398cf6f6a61/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 13:04:09,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:04:09,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 13:04:09,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:04:09,941 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-12-14 13:04:09,941 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 13:04:09,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646122082] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:04:09,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 13:04:09,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-12-14 13:04:09,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349861756] [2022-12-14 13:04:09,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:04:09,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:04:09,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:04:09,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:04:09,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 13:04:09,943 INFO L87 Difference]: Start difference. First operand 1683 states and 1946 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:04:10,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:04:10,161 INFO L93 Difference]: Finished difference Result 3925 states and 4599 transitions. [2022-12-14 13:04:10,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:04:10,161 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2022-12-14 13:04:10,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:04:10,172 INFO L225 Difference]: With dead ends: 3925 [2022-12-14 13:04:10,172 INFO L226 Difference]: Without dead ends: 2083 [2022-12-14 13:04:10,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 13:04:10,174 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 67 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 13:04:10,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 138 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 13:04:10,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2083 states. [2022-12-14 13:04:10,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2083 to 1923. [2022-12-14 13:04:10,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1923 states, 1922 states have (on average 1.163891779396462) internal successors, (2237), 1922 states have internal predecessors, (2237), 0 states have call successors, (0), 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 13:04:10,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1923 states to 1923 states and 2237 transitions. [2022-12-14 13:04:10,198 INFO L78 Accepts]: Start accepts. Automaton has 1923 states and 2237 transitions. Word has length 142 [2022-12-14 13:04:10,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:04:10,198 INFO L495 AbstractCegarLoop]: Abstraction has 1923 states and 2237 transitions. [2022-12-14 13:04:10,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:04:10,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1923 states and 2237 transitions. [2022-12-14 13:04:10,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-12-14 13:04:10,200 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:04:10,200 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:04:10,205 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e96c54-35b6-4252-985c-e398cf6f6a61/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 13:04:10,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e96c54-35b6-4252-985c-e398cf6f6a61/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:04:10,401 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:04:10,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:04:10,402 INFO L85 PathProgramCache]: Analyzing trace with hash -365682564, now seen corresponding path program 1 times [2022-12-14 13:04:10,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:04:10,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023044292] [2022-12-14 13:04:10,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:04:10,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:04:10,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:04:10,706 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 65 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:04:10,707 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:04:10,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023044292] [2022-12-14 13:04:10,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023044292] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:04:10,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555603074] [2022-12-14 13:04:10,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:04:10,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:04:10,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e96c54-35b6-4252-985c-e398cf6f6a61/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:04:10,708 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e96c54-35b6-4252-985c-e398cf6f6a61/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:04:10,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e96c54-35b6-4252-985c-e398cf6f6a61/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 13:04:10,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:04:10,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 13:04:10,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:04:10,867 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 13:04:10,867 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 13:04:10,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555603074] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:04:10,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 13:04:10,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-12-14 13:04:10,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808624301] [2022-12-14 13:04:10,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:04:10,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:04:10,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:04:10,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:04:10,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-14 13:04:10,869 INFO L87 Difference]: Start difference. First operand 1923 states and 2237 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 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 13:04:11,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:04:11,054 INFO L93 Difference]: Finished difference Result 3925 states and 4556 transitions. [2022-12-14 13:04:11,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:04:11,055 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 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 154 [2022-12-14 13:04:11,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:04:11,059 INFO L225 Difference]: With dead ends: 3925 [2022-12-14 13:04:11,059 INFO L226 Difference]: Without dead ends: 2003 [2022-12-14 13:04:11,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-14 13:04:11,060 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 14 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 13:04:11,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 50 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 13:04:11,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2003 states. [2022-12-14 13:04:11,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2003 to 1923. [2022-12-14 13:04:11,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1923 states, 1922 states have (on average 1.1436004162330906) internal successors, (2198), 1922 states have internal predecessors, (2198), 0 states have call successors, (0), 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 13:04:11,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1923 states to 1923 states and 2198 transitions. [2022-12-14 13:04:11,082 INFO L78 Accepts]: Start accepts. Automaton has 1923 states and 2198 transitions. Word has length 154 [2022-12-14 13:04:11,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:04:11,082 INFO L495 AbstractCegarLoop]: Abstraction has 1923 states and 2198 transitions. [2022-12-14 13:04:11,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 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 13:04:11,082 INFO L276 IsEmpty]: Start isEmpty. Operand 1923 states and 2198 transitions. [2022-12-14 13:04:11,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-12-14 13:04:11,085 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:04:11,085 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:04:11,090 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e96c54-35b6-4252-985c-e398cf6f6a61/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 13:04:11,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e96c54-35b6-4252-985c-e398cf6f6a61/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-14 13:04:11,286 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:04:11,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:04:11,287 INFO L85 PathProgramCache]: Analyzing trace with hash 538047737, now seen corresponding path program 1 times [2022-12-14 13:04:11,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:04:11,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177837214] [2022-12-14 13:04:11,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:04:11,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:04:11,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:04:11,446 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 13:04:11,446 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:04:11,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177837214] [2022-12-14 13:04:11,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177837214] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:04:11,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:04:11,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 13:04:11,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055608433] [2022-12-14 13:04:11,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:04:11,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:04:11,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:04:11,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:04:11,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:04:11,448 INFO L87 Difference]: Start difference. First operand 1923 states and 2198 transitions. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 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 13:04:11,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:04:11,634 INFO L93 Difference]: Finished difference Result 4405 states and 5064 transitions. [2022-12-14 13:04:11,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:04:11,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 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 184 [2022-12-14 13:04:11,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:04:11,647 INFO L225 Difference]: With dead ends: 4405 [2022-12-14 13:04:11,647 INFO L226 Difference]: Without dead ends: 2483 [2022-12-14 13:04:11,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:04:11,649 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 58 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 13:04:11,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 112 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 13:04:11,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2483 states. [2022-12-14 13:04:11,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2483 to 2003. [2022-12-14 13:04:11,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2003 states, 2002 states have (on average 1.1423576423576423) internal successors, (2287), 2002 states have internal predecessors, (2287), 0 states have call successors, (0), 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 13:04:11,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2003 states to 2003 states and 2287 transitions. [2022-12-14 13:04:11,681 INFO L78 Accepts]: Start accepts. Automaton has 2003 states and 2287 transitions. Word has length 184 [2022-12-14 13:04:11,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:04:11,681 INFO L495 AbstractCegarLoop]: Abstraction has 2003 states and 2287 transitions. [2022-12-14 13:04:11,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 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 13:04:11,681 INFO L276 IsEmpty]: Start isEmpty. Operand 2003 states and 2287 transitions. [2022-12-14 13:04:11,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-12-14 13:04:11,684 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:04:11,684 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:04:11,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 13:04:11,684 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:04:11,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:04:11,684 INFO L85 PathProgramCache]: Analyzing trace with hash 472149574, now seen corresponding path program 1 times [2022-12-14 13:04:11,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:04:11,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243324261] [2022-12-14 13:04:11,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:04:11,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:04:11,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:04:11,740 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-12-14 13:04:11,740 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:04:11,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243324261] [2022-12-14 13:04:11,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243324261] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:04:11,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:04:11,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 13:04:11,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548676247] [2022-12-14 13:04:11,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:04:11,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:04:11,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:04:11,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:04:11,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:04:11,741 INFO L87 Difference]: Start difference. First operand 2003 states and 2287 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 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 13:04:11,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:04:11,915 INFO L93 Difference]: Finished difference Result 4325 states and 4914 transitions. [2022-12-14 13:04:11,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:04:11,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 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 192 [2022-12-14 13:04:11,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:04:11,918 INFO L225 Difference]: With dead ends: 4325 [2022-12-14 13:04:11,918 INFO L226 Difference]: Without dead ends: 1763 [2022-12-14 13:04:11,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:04:11,919 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 69 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 13:04:11,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 123 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 13:04:11,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1763 states. [2022-12-14 13:04:11,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1763 to 1683. [2022-12-14 13:04:11,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1683 states, 1682 states have (on average 1.0992865636147444) internal successors, (1849), 1682 states have internal predecessors, (1849), 0 states have call successors, (0), 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 13:04:11,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1683 states to 1683 states and 1849 transitions. [2022-12-14 13:04:11,937 INFO L78 Accepts]: Start accepts. Automaton has 1683 states and 1849 transitions. Word has length 192 [2022-12-14 13:04:11,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:04:11,937 INFO L495 AbstractCegarLoop]: Abstraction has 1683 states and 1849 transitions. [2022-12-14 13:04:11,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 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 13:04:11,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1683 states and 1849 transitions. [2022-12-14 13:04:11,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-12-14 13:04:11,940 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:04:11,940 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:04:11,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 13:04:11,940 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:04:11,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:04:11,940 INFO L85 PathProgramCache]: Analyzing trace with hash -628940069, now seen corresponding path program 1 times [2022-12-14 13:04:11,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:04:11,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683485798] [2022-12-14 13:04:11,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:04:11,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:04:11,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:04:12,114 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 403 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-12-14 13:04:12,114 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:04:12,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683485798] [2022-12-14 13:04:12,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683485798] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:04:12,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:04:12,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 13:04:12,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352775836] [2022-12-14 13:04:12,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:04:12,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 13:04:12,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:04:12,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 13:04:12,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 13:04:12,116 INFO L87 Difference]: Start difference. First operand 1683 states and 1849 transitions. Second operand has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 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 13:04:12,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:04:12,305 INFO L93 Difference]: Finished difference Result 3525 states and 3863 transitions. [2022-12-14 13:04:12,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:04:12,305 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 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 271 [2022-12-14 13:04:12,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:04:12,309 INFO L225 Difference]: With dead ends: 3525 [2022-12-14 13:04:12,309 INFO L226 Difference]: Without dead ends: 1683 [2022-12-14 13:04:12,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 13:04:12,311 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 39 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 13:04:12,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 119 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 13:04:12,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1683 states. [2022-12-14 13:04:12,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1683 to 1523. [2022-12-14 13:04:12,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1522 states have (on average 1.0913272010512483) internal successors, (1661), 1522 states have internal predecessors, (1661), 0 states have call successors, (0), 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 13:04:12,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 1661 transitions. [2022-12-14 13:04:12,334 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 1661 transitions. Word has length 271 [2022-12-14 13:04:12,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:04:12,334 INFO L495 AbstractCegarLoop]: Abstraction has 1523 states and 1661 transitions. [2022-12-14 13:04:12,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 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 13:04:12,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 1661 transitions. [2022-12-14 13:04:12,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2022-12-14 13:04:12,339 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:04:12,339 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:04:12,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-14 13:04:12,339 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:04:12,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:04:12,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1422974540, now seen corresponding path program 1 times [2022-12-14 13:04:12,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:04:12,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473604791] [2022-12-14 13:04:12,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:04:12,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:04:12,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:04:12,440 INFO L134 CoverageAnalysis]: Checked inductivity of 641 backedges. 398 proven. 0 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2022-12-14 13:04:12,440 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:04:12,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473604791] [2022-12-14 13:04:12,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473604791] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:04:12,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:04:12,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 13:04:12,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417485018] [2022-12-14 13:04:12,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:04:12,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:04:12,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:04:12,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:04:12,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:04:12,442 INFO L87 Difference]: Start difference. First operand 1523 states and 1661 transitions. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 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 13:04:12,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:04:12,584 INFO L93 Difference]: Finished difference Result 2723 states and 2980 transitions. [2022-12-14 13:04:12,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:04:12,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 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 321 [2022-12-14 13:04:12,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:04:12,585 INFO L225 Difference]: With dead ends: 2723 [2022-12-14 13:04:12,585 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 13:04:12,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:04:12,586 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 42 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:04:12,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 92 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:04:12,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 13:04:12,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 13:04:12,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 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 13:04:12,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 13:04:12,587 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 321 [2022-12-14 13:04:12,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:04:12,587 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 13:04:12,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 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 13:04:12,587 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 13:04:12,587 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 13:04:12,589 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 13:04:12,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-14 13:04:12,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-14 13:04:13,320 INFO L899 garLoopResultBuilder]: For program point L301(lines 301 423) no Hoare annotation was computed. [2022-12-14 13:04:13,321 INFO L899 garLoopResultBuilder]: For program point L235(lines 235 423) no Hoare annotation was computed. [2022-12-14 13:04:13,321 INFO L899 garLoopResultBuilder]: For program point L169(lines 169 423) no Hoare annotation was computed. [2022-12-14 13:04:13,321 INFO L899 garLoopResultBuilder]: For program point L303(lines 303 423) no Hoare annotation was computed. [2022-12-14 13:04:13,321 INFO L899 garLoopResultBuilder]: For program point L105(lines 105 423) no Hoare annotation was computed. [2022-12-14 13:04:13,321 INFO L899 garLoopResultBuilder]: For program point L40(lines 40 423) no Hoare annotation was computed. [2022-12-14 13:04:13,321 INFO L899 garLoopResultBuilder]: For program point L371(lines 371 423) no Hoare annotation was computed. [2022-12-14 13:04:13,321 INFO L899 garLoopResultBuilder]: For program point L307(lines 307 423) no Hoare annotation was computed. [2022-12-14 13:04:13,321 INFO L899 garLoopResultBuilder]: For program point L175(lines 175 423) no Hoare annotation was computed. [2022-12-14 13:04:13,321 INFO L899 garLoopResultBuilder]: For program point L109(lines 109 423) no Hoare annotation was computed. [2022-12-14 13:04:13,321 INFO L899 garLoopResultBuilder]: For program point L242(lines 242 423) no Hoare annotation was computed. [2022-12-14 13:04:13,321 INFO L899 garLoopResultBuilder]: For program point L45(lines 45 423) no Hoare annotation was computed. [2022-12-14 13:04:13,321 INFO L899 garLoopResultBuilder]: For program point L244(lines 244 423) no Hoare annotation was computed. [2022-12-14 13:04:13,321 INFO L899 garLoopResultBuilder]: For program point L179(lines 179 423) no Hoare annotation was computed. [2022-12-14 13:04:13,321 INFO L899 garLoopResultBuilder]: For program point L378(lines 378 423) no Hoare annotation was computed. [2022-12-14 13:04:13,321 INFO L899 garLoopResultBuilder]: For program point L48(lines 48 423) no Hoare annotation was computed. [2022-12-14 13:04:13,321 INFO L899 garLoopResultBuilder]: For program point L247(lines 247 423) no Hoare annotation was computed. [2022-12-14 13:04:13,321 INFO L899 garLoopResultBuilder]: For program point L116(lines 116 423) no Hoare annotation was computed. [2022-12-14 13:04:13,321 INFO L899 garLoopResultBuilder]: For program point L448-1(lines 39 608) no Hoare annotation was computed. [2022-12-14 13:04:13,321 INFO L899 garLoopResultBuilder]: For program point L52(lines 52 423) no Hoare annotation was computed. [2022-12-14 13:04:13,321 INFO L899 garLoopResultBuilder]: For program point L185(lines 185 423) no Hoare annotation was computed. [2022-12-14 13:04:13,322 INFO L899 garLoopResultBuilder]: For program point L451-1(lines 39 608) no Hoare annotation was computed. [2022-12-14 13:04:13,322 INFO L899 garLoopResultBuilder]: For program point L385(lines 385 423) no Hoare annotation was computed. [2022-12-14 13:04:13,322 INFO L899 garLoopResultBuilder]: For program point L319(lines 319 423) no Hoare annotation was computed. [2022-12-14 13:04:13,322 INFO L899 garLoopResultBuilder]: For program point L452(line 452) no Hoare annotation was computed. [2022-12-14 13:04:13,322 INFO L899 garLoopResultBuilder]: For program point L189(lines 189 423) no Hoare annotation was computed. [2022-12-14 13:04:13,322 INFO L899 garLoopResultBuilder]: For program point L123(lines 123 423) no Hoare annotation was computed. [2022-12-14 13:04:13,322 INFO L899 garLoopResultBuilder]: For program point L57(lines 57 423) no Hoare annotation was computed. [2022-12-14 13:04:13,322 INFO L899 garLoopResultBuilder]: For program point L388(lines 388 423) no Hoare annotation was computed. [2022-12-14 13:04:13,322 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-14 13:04:13,322 INFO L899 garLoopResultBuilder]: For program point L390(lines 390 423) no Hoare annotation was computed. [2022-12-14 13:04:13,322 INFO L899 garLoopResultBuilder]: For program point L324(lines 324 423) no Hoare annotation was computed. [2022-12-14 13:04:13,322 INFO L899 garLoopResultBuilder]: For program point L258(lines 258 423) no Hoare annotation was computed. [2022-12-14 13:04:13,322 INFO L899 garLoopResultBuilder]: For program point L60(lines 60 423) no Hoare annotation was computed. [2022-12-14 13:04:13,322 INFO L899 garLoopResultBuilder]: For program point L195(lines 195 423) no Hoare annotation was computed. [2022-12-14 13:04:13,322 INFO L899 garLoopResultBuilder]: For program point L129(lines 129 423) no Hoare annotation was computed. [2022-12-14 13:04:13,322 INFO L899 garLoopResultBuilder]: For program point L64(lines 64 423) no Hoare annotation was computed. [2022-12-14 13:04:13,322 INFO L899 garLoopResultBuilder]: For program point L263(lines 263 423) no Hoare annotation was computed. [2022-12-14 13:04:13,322 INFO L899 garLoopResultBuilder]: For program point L197(lines 197 423) no Hoare annotation was computed. [2022-12-14 13:04:13,322 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 452) no Hoare annotation was computed. [2022-12-14 13:04:13,322 INFO L899 garLoopResultBuilder]: For program point L199(lines 199 423) no Hoare annotation was computed. [2022-12-14 13:04:13,322 INFO L899 garLoopResultBuilder]: For program point L133(lines 133 423) no Hoare annotation was computed. [2022-12-14 13:04:13,322 INFO L899 garLoopResultBuilder]: For program point L399(lines 399 423) no Hoare annotation was computed. [2022-12-14 13:04:13,323 INFO L899 garLoopResultBuilder]: For program point L201(lines 201 423) no Hoare annotation was computed. [2022-12-14 13:04:13,323 INFO L899 garLoopResultBuilder]: For program point L69(lines 69 423) no Hoare annotation was computed. [2022-12-14 13:04:13,323 INFO L899 garLoopResultBuilder]: For program point L269(lines 269 423) no Hoare annotation was computed. [2022-12-14 13:04:13,323 INFO L899 garLoopResultBuilder]: For program point L204(lines 204 423) no Hoare annotation was computed. [2022-12-14 13:04:13,323 INFO L899 garLoopResultBuilder]: For program point L271(lines 271 423) no Hoare annotation was computed. [2022-12-14 13:04:13,323 INFO L899 garLoopResultBuilder]: For program point L404(lines 404 423) no Hoare annotation was computed. [2022-12-14 13:04:13,323 INFO L899 garLoopResultBuilder]: For program point L338(lines 338 423) no Hoare annotation was computed. [2022-12-14 13:04:13,323 INFO L899 garLoopResultBuilder]: For program point L140(lines 140 423) no Hoare annotation was computed. [2022-12-14 13:04:13,323 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 423) no Hoare annotation was computed. [2022-12-14 13:04:13,323 INFO L899 garLoopResultBuilder]: For program point L208(lines 208 423) no Hoare annotation was computed. [2022-12-14 13:04:13,323 INFO L899 garLoopResultBuilder]: For program point L341(lines 341 423) no Hoare annotation was computed. [2022-12-14 13:04:13,323 INFO L899 garLoopResultBuilder]: For program point L408(lines 408 423) no Hoare annotation was computed. [2022-12-14 13:04:13,323 INFO L899 garLoopResultBuilder]: For program point L144(lines 144 423) no Hoare annotation was computed. [2022-12-14 13:04:13,323 INFO L899 garLoopResultBuilder]: For program point L79(lines 79 423) no Hoare annotation was computed. [2022-12-14 13:04:13,323 INFO L899 garLoopResultBuilder]: For program point L212(lines 212 423) no Hoare annotation was computed. [2022-12-14 13:04:13,323 INFO L902 garLoopResultBuilder]: At program point L610(lines 610 627) the Hoare annotation is: true [2022-12-14 13:04:13,323 INFO L899 garLoopResultBuilder]: For program point L412(lines 412 423) no Hoare annotation was computed. [2022-12-14 13:04:13,323 INFO L899 garLoopResultBuilder]: For program point L347(lines 347 423) no Hoare annotation was computed. [2022-12-14 13:04:13,323 INFO L899 garLoopResultBuilder]: For program point L149(lines 149 423) no Hoare annotation was computed. [2022-12-14 13:04:13,323 INFO L899 garLoopResultBuilder]: For program point L414(lines 414 423) no Hoare annotation was computed. [2022-12-14 13:04:13,323 INFO L899 garLoopResultBuilder]: For program point L84(lines 84 423) no Hoare annotation was computed. [2022-12-14 13:04:13,324 INFO L899 garLoopResultBuilder]: For program point L417(lines 417 423) no Hoare annotation was computed. [2022-12-14 13:04:13,324 INFO L899 garLoopResultBuilder]: For program point L153(lines 153 423) no Hoare annotation was computed. [2022-12-14 13:04:13,324 INFO L895 garLoopResultBuilder]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse4 (= ~a19~0 1))) (let ((.cse7 (not .cse4)) (.cse6 (= ~a11~0 1)) (.cse11 (<= ~a19~0 0)) (.cse5 (= ~a11~0 0)) (.cse2 (= ~a25~0 1)) (.cse10 (<= ~a28~0 7)) (.cse0 (= ~a17~0 8)) (.cse1 (<= 9 ~a28~0)) (.cse3 (= ~a21~0 1)) (.cse8 (<= ~a28~0 10)) (.cse9 (<= ~a25~0 0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse2 .cse5 .cse4) (and .cse1 .cse2 .cse6 .cse7 .cse8) (and .cse2 .cse5 .cse8) (and .cse1 .cse5 .cse8 .cse4 .cse9) (and .cse6 .cse10 .cse9) (and (<= 10 ~a28~0) .cse8 (not .cse2) .cse4) (and .cse5 .cse10 .cse11) (and .cse7 .cse8 .cse9) (and (<= 11 ~a28~0) .cse6 .cse4 .cse9) (and .cse5 .cse9 .cse11) (and .cse5 .cse8 .cse4 .cse10 .cse9) (and .cse2 .cse10) (and .cse0 .cse1 .cse3 .cse8 .cse9)))) [2022-12-14 13:04:13,324 INFO L899 garLoopResultBuilder]: For program point L286(lines 286 423) no Hoare annotation was computed. [2022-12-14 13:04:13,324 INFO L899 garLoopResultBuilder]: For program point L419(lines 419 423) no Hoare annotation was computed. [2022-12-14 13:04:13,324 INFO L899 garLoopResultBuilder]: For program point L222(lines 222 423) no Hoare annotation was computed. [2022-12-14 13:04:13,324 INFO L899 garLoopResultBuilder]: For program point L290(lines 290 423) no Hoare annotation was computed. [2022-12-14 13:04:13,324 INFO L899 garLoopResultBuilder]: For program point L158(lines 158 423) no Hoare annotation was computed. [2022-12-14 13:04:13,324 INFO L899 garLoopResultBuilder]: For program point L92(lines 92 423) no Hoare annotation was computed. [2022-12-14 13:04:13,324 INFO L899 garLoopResultBuilder]: For program point L621(line 621) no Hoare annotation was computed. [2022-12-14 13:04:13,324 INFO L899 garLoopResultBuilder]: For program point L225(lines 225 423) no Hoare annotation was computed. [2022-12-14 13:04:13,324 INFO L899 garLoopResultBuilder]: For program point L359(lines 359 423) no Hoare annotation was computed. [2022-12-14 13:04:13,324 INFO L899 garLoopResultBuilder]: For program point L293(lines 293 423) no Hoare annotation was computed. [2022-12-14 13:04:13,324 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-14 13:04:13,324 INFO L899 garLoopResultBuilder]: For program point L228(lines 228 423) no Hoare annotation was computed. [2022-12-14 13:04:13,324 INFO L899 garLoopResultBuilder]: For program point L296(lines 296 423) no Hoare annotation was computed. [2022-12-14 13:04:13,325 INFO L899 garLoopResultBuilder]: For program point L164(lines 164 423) no Hoare annotation was computed. [2022-12-14 13:04:13,325 INFO L895 garLoopResultBuilder]: At program point calculate_output_returnLabel#1(lines 39 608) the Hoare annotation is: (let ((.cse4 (= ~a19~0 1))) (let ((.cse7 (not .cse4)) (.cse6 (= ~a11~0 1)) (.cse11 (<= ~a19~0 0)) (.cse5 (= ~a11~0 0)) (.cse2 (= ~a25~0 1)) (.cse10 (<= ~a28~0 7)) (.cse0 (= ~a17~0 8)) (.cse1 (<= 9 ~a28~0)) (.cse3 (= ~a21~0 1)) (.cse8 (<= ~a28~0 10)) (.cse9 (<= ~a25~0 0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse2 .cse5 .cse4) (and .cse1 .cse2 .cse6 .cse7 .cse8) (and .cse2 .cse5 .cse8) (and .cse1 .cse5 .cse8 .cse4 .cse9) (and .cse6 .cse10 .cse9) (and (<= 10 ~a28~0) .cse8 (not .cse2) .cse4) (and .cse5 .cse10 .cse11) (and .cse7 .cse8 .cse9) (and (<= 11 ~a28~0) .cse6 .cse4 .cse9) (and .cse5 .cse9 .cse11) (and .cse5 .cse8 .cse4 .cse10 .cse9) (and .cse2 .cse10) (and .cse0 .cse1 .cse3 .cse8 .cse9)))) [2022-12-14 13:04:13,325 INFO L899 garLoopResultBuilder]: For program point L364(lines 364 423) no Hoare annotation was computed. [2022-12-14 13:04:13,325 INFO L899 garLoopResultBuilder]: For program point L233(lines 233 423) no Hoare annotation was computed. [2022-12-14 13:04:13,325 INFO L899 garLoopResultBuilder]: For program point L101(lines 101 423) no Hoare annotation was computed. [2022-12-14 13:04:13,327 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:04:13,328 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 13:04:13,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 01:04:13 BoogieIcfgContainer [2022-12-14 13:04:13,341 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 13:04:13,341 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 13:04:13,341 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 13:04:13,341 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 13:04:13,342 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:04:03" (3/4) ... [2022-12-14 13:04:13,344 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 13:04:13,355 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 116 nodes and edges [2022-12-14 13:04:13,355 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2022-12-14 13:04:13,356 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2022-12-14 13:04:13,356 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-14 13:04:13,410 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e96c54-35b6-4252-985c-e398cf6f6a61/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 13:04:13,410 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 13:04:13,411 INFO L158 Benchmark]: Toolchain (without parser) took 11169.79ms. Allocated memory was 146.8MB in the beginning and 255.9MB in the end (delta: 109.1MB). Free memory was 110.3MB in the beginning and 90.2MB in the end (delta: 20.1MB). Peak memory consumption was 131.7MB. Max. memory is 16.1GB. [2022-12-14 13:04:13,411 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 111.1MB. Free memory is still 87.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 13:04:13,411 INFO L158 Benchmark]: CACSL2BoogieTranslator took 349.14ms. Allocated memory is still 146.8MB. Free memory was 110.3MB in the beginning and 83.6MB in the end (delta: 26.6MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-12-14 13:04:13,411 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.94ms. Allocated memory is still 146.8MB. Free memory was 83.6MB in the beginning and 78.3MB in the end (delta: 5.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 13:04:13,411 INFO L158 Benchmark]: Boogie Preprocessor took 37.23ms. Allocated memory is still 146.8MB. Free memory was 78.3MB in the beginning and 73.6MB in the end (delta: 4.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-12-14 13:04:13,412 INFO L158 Benchmark]: RCFGBuilder took 1002.89ms. Allocated memory is still 146.8MB. Free memory was 73.6MB in the beginning and 60.4MB in the end (delta: 13.2MB). Peak memory consumption was 28.3MB. Max. memory is 16.1GB. [2022-12-14 13:04:13,412 INFO L158 Benchmark]: TraceAbstraction took 9658.21ms. Allocated memory was 146.8MB in the beginning and 255.9MB in the end (delta: 109.1MB). Free memory was 59.6MB in the beginning and 101.8MB in the end (delta: -42.2MB). Peak memory consumption was 101.6MB. Max. memory is 16.1GB. [2022-12-14 13:04:13,412 INFO L158 Benchmark]: Witness Printer took 69.26ms. Allocated memory is still 255.9MB. Free memory was 101.8MB in the beginning and 90.2MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 13:04:13,413 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 111.1MB. Free memory is still 87.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 349.14ms. Allocated memory is still 146.8MB. Free memory was 110.3MB in the beginning and 83.6MB in the end (delta: 26.6MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.94ms. Allocated memory is still 146.8MB. Free memory was 83.6MB in the beginning and 78.3MB in the end (delta: 5.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.23ms. Allocated memory is still 146.8MB. Free memory was 78.3MB in the beginning and 73.6MB in the end (delta: 4.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 1002.89ms. Allocated memory is still 146.8MB. Free memory was 73.6MB in the beginning and 60.4MB in the end (delta: 13.2MB). Peak memory consumption was 28.3MB. Max. memory is 16.1GB. * TraceAbstraction took 9658.21ms. Allocated memory was 146.8MB in the beginning and 255.9MB in the end (delta: 109.1MB). Free memory was 59.6MB in the beginning and 101.8MB in the end (delta: -42.2MB). Peak memory consumption was 101.6MB. Max. memory is 16.1GB. * Witness Printer took 69.26ms. Allocated memory is still 255.9MB. Free memory was 101.8MB in the beginning and 90.2MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 452]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.6s, OverallIterations: 16, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 922 SdHoareTripleChecker+Valid, 3.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 922 mSDsluCounter, 1423 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 95 mSDsCounter, 885 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3981 IncrementalHoareTripleChecker+Invalid, 4866 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 885 mSolverCounterUnsat, 1328 mSDtfsCounter, 3981 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 722 GetRequests, 689 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2003occurred in iteration=13, InterpolantAutomatonStates: 49, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 16 MinimizatonAttempts, 1520 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 67 NumberOfFragments, 355 HoareAnnotationTreeSize, 3 FomulaSimplifications, 260 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 1930 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 2979 NumberOfCodeBlocks, 2979 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 2958 ConstructedInterpolants, 0 QuantifiedInterpolants, 10041 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1489 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 21 InterpolantComputations, 16 PerfectInterpolantSequences, 2339/2387 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((((((((((((((a17 == 8 && 9 <= a28) && a25 == 1) && a21 == 1) && a19 == 1) || ((a25 == 1 && a11 == 0) && a19 == 1)) || ((((9 <= a28 && a25 == 1) && a11 == 1) && !(a19 == 1)) && a28 <= 10)) || ((a25 == 1 && a11 == 0) && a28 <= 10)) || ((((9 <= a28 && a11 == 0) && a28 <= 10) && a19 == 1) && a25 <= 0)) || ((a11 == 1 && a28 <= 7) && a25 <= 0)) || (((10 <= a28 && a28 <= 10) && !(a25 == 1)) && a19 == 1)) || ((a11 == 0 && a28 <= 7) && a19 <= 0)) || ((!(a19 == 1) && a28 <= 10) && a25 <= 0)) || (((11 <= a28 && a11 == 1) && a19 == 1) && a25 <= 0)) || ((a11 == 0 && a25 <= 0) && a19 <= 0)) || ((((a11 == 0 && a28 <= 10) && a19 == 1) && a28 <= 7) && a25 <= 0)) || (a25 == 1 && a28 <= 7)) || ((((a17 == 8 && 9 <= a28) && a21 == 1) && a28 <= 10) && a25 <= 0) - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: ((((((((((((((((a17 == 8 && 9 <= a28) && a25 == 1) && a21 == 1) && a19 == 1) || ((a25 == 1 && a11 == 0) && a19 == 1)) || ((((9 <= a28 && a25 == 1) && a11 == 1) && !(a19 == 1)) && a28 <= 10)) || ((a25 == 1 && a11 == 0) && a28 <= 10)) || ((((9 <= a28 && a11 == 0) && a28 <= 10) && a19 == 1) && a25 <= 0)) || ((a11 == 1 && a28 <= 7) && a25 <= 0)) || (((10 <= a28 && a28 <= 10) && !(a25 == 1)) && a19 == 1)) || ((a11 == 0 && a28 <= 7) && a19 <= 0)) || ((!(a19 == 1) && a28 <= 10) && a25 <= 0)) || (((11 <= a28 && a11 == 1) && a19 == 1) && a25 <= 0)) || ((a11 == 0 && a25 <= 0) && a19 <= 0)) || ((((a11 == 0 && a28 <= 10) && a19 == 1) && a28 <= 7) && a25 <= 0)) || (a25 == 1 && a28 <= 7)) || ((((a17 == 8 && 9 <= a28) && a21 == 1) && a28 <= 10) && a25 <= 0) - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-12-14 13:04:13,427 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72e96c54-35b6-4252-985c-e398cf6f6a61/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE