./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label27.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_372c73bd-8727-41a5-abc9-42ebf22393f6/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372c73bd-8727-41a5-abc9-42ebf22393f6/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372c73bd-8727-41a5-abc9-42ebf22393f6/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372c73bd-8727-41a5-abc9-42ebf22393f6/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label27.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372c73bd-8727-41a5-abc9-42ebf22393f6/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372c73bd-8727-41a5-abc9-42ebf22393f6/bin/utaipan-ByfvJB40ur --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 4ceae147c0993f09d1996333054d05cdb50149b89c2ec286f40c2e532c4f5e1a --- 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-38b53e6 [2022-11-25 22:19:19,643 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 22:19:19,645 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 22:19:19,671 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 22:19:19,674 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 22:19:19,677 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 22:19:19,680 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 22:19:19,683 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 22:19:19,686 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 22:19:19,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 22:19:19,696 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 22:19:19,698 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 22:19:19,699 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 22:19:19,701 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 22:19:19,706 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 22:19:19,707 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 22:19:19,710 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 22:19:19,711 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 22:19:19,713 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 22:19:19,717 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 22:19:19,721 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 22:19:19,723 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 22:19:19,724 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 22:19:19,726 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 22:19:19,732 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 22:19:19,737 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 22:19:19,737 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 22:19:19,738 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 22:19:19,740 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 22:19:19,741 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 22:19:19,742 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 22:19:19,743 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 22:19:19,745 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 22:19:19,746 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 22:19:19,748 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 22:19:19,748 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 22:19:19,749 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 22:19:19,749 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 22:19:19,750 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 22:19:19,752 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 22:19:19,753 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 22:19:19,754 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372c73bd-8727-41a5-abc9-42ebf22393f6/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-25 22:19:19,786 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 22:19:19,786 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 22:19:19,786 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 22:19:19,787 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 22:19:19,787 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 22:19:19,788 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 22:19:19,788 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 22:19:19,788 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 22:19:19,788 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 22:19:19,789 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 22:19:19,789 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 22:19:19,789 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 22:19:19,789 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 22:19:19,789 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 22:19:19,790 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 22:19:19,790 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 22:19:19,790 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 22:19:19,790 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 22:19:19,791 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 22:19:19,794 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 22:19:19,794 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 22:19:19,795 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 22:19:19,795 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 22:19:19,795 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 22:19:19,796 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 22:19:19,796 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 22:19:19,797 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 22:19:19,797 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 22:19:19,797 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 22:19:19,797 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 22:19:19,798 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 22:19:19,798 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 22:19:19,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:19:19,799 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 22:19:19,799 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 22:19:19,799 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 22:19:19,800 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 22:19:19,800 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 22:19:19,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 22:19:19,800 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 22:19:19,801 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 22:19:19,801 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_372c73bd-8727-41a5-abc9-42ebf22393f6/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372c73bd-8727-41a5-abc9-42ebf22393f6/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ceae147c0993f09d1996333054d05cdb50149b89c2ec286f40c2e532c4f5e1a [2022-11-25 22:19:20,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 22:19:20,086 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 22:19:20,089 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 22:19:20,090 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 22:19:20,091 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 22:19:20,092 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372c73bd-8727-41a5-abc9-42ebf22393f6/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/eca-rers2012/Problem01_label27.c [2022-11-25 22:19:23,201 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 22:19:23,560 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 22:19:23,561 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372c73bd-8727-41a5-abc9-42ebf22393f6/sv-benchmarks/c/eca-rers2012/Problem01_label27.c [2022-11-25 22:19:23,572 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372c73bd-8727-41a5-abc9-42ebf22393f6/bin/utaipan-ByfvJB40ur/data/3264adc74/596d99139da44eaab7c5c5daaf5e2cb2/FLAG9c1b48aef [2022-11-25 22:19:23,586 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372c73bd-8727-41a5-abc9-42ebf22393f6/bin/utaipan-ByfvJB40ur/data/3264adc74/596d99139da44eaab7c5c5daaf5e2cb2 [2022-11-25 22:19:23,589 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 22:19:23,591 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 22:19:23,592 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 22:19:23,593 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 22:19:23,596 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 22:19:23,597 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:19:23" (1/1) ... [2022-11-25 22:19:23,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75dd308 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:23, skipping insertion in model container [2022-11-25 22:19:23,599 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:19:23" (1/1) ... [2022-11-25 22:19:23,606 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 22:19:23,641 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 22:19:23,995 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_372c73bd-8727-41a5-abc9-42ebf22393f6/sv-benchmarks/c/eca-rers2012/Problem01_label27.c[16500,16513] [2022-11-25 22:19:24,091 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:19:24,101 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 22:19:24,245 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_372c73bd-8727-41a5-abc9-42ebf22393f6/sv-benchmarks/c/eca-rers2012/Problem01_label27.c[16500,16513] [2022-11-25 22:19:24,275 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:19:24,291 INFO L208 MainTranslator]: Completed translation [2022-11-25 22:19:24,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:24 WrapperNode [2022-11-25 22:19:24,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 22:19:24,294 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 22:19:24,294 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 22:19:24,295 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 22:19:24,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:24" (1/1) ... [2022-11-25 22:19:24,318 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:24" (1/1) ... [2022-11-25 22:19:24,369 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 657 [2022-11-25 22:19:24,369 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 22:19:24,370 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 22:19:24,370 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 22:19:24,371 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 22:19:24,380 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:24" (1/1) ... [2022-11-25 22:19:24,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:24" (1/1) ... [2022-11-25 22:19:24,385 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:24" (1/1) ... [2022-11-25 22:19:24,386 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:24" (1/1) ... [2022-11-25 22:19:24,402 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:24" (1/1) ... [2022-11-25 22:19:24,410 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:24" (1/1) ... [2022-11-25 22:19:24,413 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:24" (1/1) ... [2022-11-25 22:19:24,417 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:24" (1/1) ... [2022-11-25 22:19:24,423 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 22:19:24,424 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 22:19:24,424 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 22:19:24,424 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 22:19:24,425 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:24" (1/1) ... [2022-11-25 22:19:24,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:19:24,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372c73bd-8727-41a5-abc9-42ebf22393f6/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:19:24,475 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372c73bd-8727-41a5-abc9-42ebf22393f6/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 22:19:24,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372c73bd-8727-41a5-abc9-42ebf22393f6/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 22:19:24,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 22:19:24,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 22:19:24,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 22:19:24,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 22:19:24,623 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 22:19:24,626 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 22:19:25,787 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 22:19:26,063 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 22:19:26,063 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 22:19:26,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:19:26 BoogieIcfgContainer [2022-11-25 22:19:26,066 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 22:19:26,069 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 22:19:26,070 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 22:19:26,073 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 22:19:26,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 10:19:23" (1/3) ... [2022-11-25 22:19:26,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ff3084c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:19:26, skipping insertion in model container [2022-11-25 22:19:26,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:24" (2/3) ... [2022-11-25 22:19:26,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ff3084c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:19:26, skipping insertion in model container [2022-11-25 22:19:26,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:19:26" (3/3) ... [2022-11-25 22:19:26,078 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label27.c [2022-11-25 22:19:26,099 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 22:19:26,099 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 22:19:26,166 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 22:19:26,174 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;@5bb19105, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 22:19:26,175 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 22:19:26,179 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:19:26,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-25 22:19:26,190 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:19:26,191 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] [2022-11-25 22:19:26,191 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:19:26,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:19:26,197 INFO L85 PathProgramCache]: Analyzing trace with hash 379010238, now seen corresponding path program 1 times [2022-11-25 22:19:26,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:19:26,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980950594] [2022-11-25 22:19:26,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:19:26,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:19:26,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:19:26,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:19:26,697 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:19:26,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980950594] [2022-11-25 22:19:26,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980950594] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:19:26,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:19:26,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 22:19:26,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070026651] [2022-11-25 22:19:26,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:19:26,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:19:26,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:19:26,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:19:26,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:19:26,757 INFO L87 Difference]: Start difference. First operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 0 states have call successors, (0), 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 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:19:27,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:19:27,300 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2022-11-25 22:19:27,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:19:27,303 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2022-11-25 22:19:27,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:19:27,313 INFO L225 Difference]: With dead ends: 224 [2022-11-25 22:19:27,313 INFO L226 Difference]: Without dead ends: 145 [2022-11-25 22:19:27,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:19:27,319 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 21 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 22:19:27,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 29 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 22:19:27,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-11-25 22:19:27,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2022-11-25 22:19:27,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.7986111111111112) internal successors, (259), 144 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:19:27,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 259 transitions. [2022-11-25 22:19:27,365 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 259 transitions. Word has length 71 [2022-11-25 22:19:27,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:19:27,365 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 259 transitions. [2022-11-25 22:19:27,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:19:27,366 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 259 transitions. [2022-11-25 22:19:27,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-25 22:19:27,369 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:19:27,369 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-25 22:19:27,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 22:19:27,369 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:19:27,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:19:27,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1708117238, now seen corresponding path program 1 times [2022-11-25 22:19:27,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:19:27,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002475996] [2022-11-25 22:19:27,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:19:27,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:19:27,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:19:27,499 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:19:27,500 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:19:27,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002475996] [2022-11-25 22:19:27,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002475996] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:19:27,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:19:27,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 22:19:27,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835721858] [2022-11-25 22:19:27,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:19:27,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:19:27,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:19:27,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:19:27,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:19:27,503 INFO L87 Difference]: Start difference. First operand 145 states and 259 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:19:27,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:19:27,921 INFO L93 Difference]: Finished difference Result 431 states and 774 transitions. [2022-11-25 22:19:27,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:19:27,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-11-25 22:19:27,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:19:27,923 INFO L225 Difference]: With dead ends: 431 [2022-11-25 22:19:27,924 INFO L226 Difference]: Without dead ends: 287 [2022-11-25 22:19:27,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:19:27,926 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 112 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 22:19:27,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 25 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 22:19:27,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-11-25 22:19:27,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2022-11-25 22:19:27,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.6783216783216783) internal successors, (480), 286 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:19:27,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 480 transitions. [2022-11-25 22:19:27,946 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 480 transitions. Word has length 76 [2022-11-25 22:19:27,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:19:27,947 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 480 transitions. [2022-11-25 22:19:27,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:19:27,947 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 480 transitions. [2022-11-25 22:19:27,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-25 22:19:27,949 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:19:27,950 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-25 22:19:27,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 22:19:27,950 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:19:27,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:19:27,951 INFO L85 PathProgramCache]: Analyzing trace with hash -180189076, now seen corresponding path program 1 times [2022-11-25 22:19:27,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:19:27,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519212221] [2022-11-25 22:19:27,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:19:27,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:19:27,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:19:28,068 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:19:28,068 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:19:28,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519212221] [2022-11-25 22:19:28,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519212221] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:19:28,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:19:28,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 22:19:28,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521668405] [2022-11-25 22:19:28,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:19:28,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:19:28,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:19:28,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:19:28,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:19:28,071 INFO L87 Difference]: Start difference. First operand 287 states and 480 transitions. 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) [2022-11-25 22:19:28,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:19:28,449 INFO L93 Difference]: Finished difference Result 786 states and 1318 transitions. [2022-11-25 22:19:28,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:19:28,450 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 [2022-11-25 22:19:28,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:19:28,452 INFO L225 Difference]: With dead ends: 786 [2022-11-25 22:19:28,452 INFO L226 Difference]: Without dead ends: 500 [2022-11-25 22:19:28,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:19:28,455 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 82 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 22:19:28,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 13 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 22:19:28,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2022-11-25 22:19:28,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 500. [2022-11-25 22:19:28,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 499 states have (on average 1.6332665330661322) internal successors, (815), 499 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:19:28,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 815 transitions. [2022-11-25 22:19:28,504 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 815 transitions. Word has length 80 [2022-11-25 22:19:28,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:19:28,505 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 815 transitions. [2022-11-25 22:19:28,505 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) [2022-11-25 22:19:28,506 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 815 transitions. [2022-11-25 22:19:28,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-25 22:19:28,509 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:19:28,510 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1] [2022-11-25 22:19:28,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 22:19:28,510 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:19:28,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:19:28,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1567517726, now seen corresponding path program 1 times [2022-11-25 22:19:28,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:19:28,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117055368] [2022-11-25 22:19:28,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:19:28,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:19:28,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:19:28,674 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:19:28,674 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:19:28,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117055368] [2022-11-25 22:19:28,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117055368] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:19:28,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:19:28,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 22:19:28,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853918236] [2022-11-25 22:19:28,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:19:28,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:19:28,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:19:28,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:19:28,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:19:28,677 INFO L87 Difference]: Start difference. First operand 500 states and 815 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) [2022-11-25 22:19:29,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:19:29,101 INFO L93 Difference]: Finished difference Result 999 states and 1629 transitions. [2022-11-25 22:19:29,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:19:29,101 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 [2022-11-25 22:19:29,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:19:29,103 INFO L225 Difference]: With dead ends: 999 [2022-11-25 22:19:29,104 INFO L226 Difference]: Without dead ends: 500 [2022-11-25 22:19:29,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:19:29,106 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 69 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 22:19:29,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 57 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 22:19:29,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2022-11-25 22:19:29,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 500. [2022-11-25 22:19:29,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 499 states have (on average 1.6092184368737474) internal successors, (803), 499 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:19:29,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 803 transitions. [2022-11-25 22:19:29,122 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 803 transitions. Word has length 84 [2022-11-25 22:19:29,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:19:29,122 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 803 transitions. [2022-11-25 22:19:29,123 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) [2022-11-25 22:19:29,123 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 803 transitions. [2022-11-25 22:19:29,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-25 22:19:29,126 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:19:29,126 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-25 22:19:29,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 22:19:29,126 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:19:29,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:19:29,127 INFO L85 PathProgramCache]: Analyzing trace with hash 714028957, now seen corresponding path program 1 times [2022-11-25 22:19:29,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:19:29,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187645869] [2022-11-25 22:19:29,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:19:29,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:19:29,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:19:29,353 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:19:29,354 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:19:29,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187645869] [2022-11-25 22:19:29,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187645869] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:19:29,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:19:29,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 22:19:29,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930301274] [2022-11-25 22:19:29,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:19:29,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:19:29,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:19:29,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:19:29,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:19:29,357 INFO L87 Difference]: Start difference. First operand 500 states and 803 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:19:29,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:19:29,722 INFO L93 Difference]: Finished difference Result 1212 states and 1902 transitions. [2022-11-25 22:19:29,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:19:29,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2022-11-25 22:19:29,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:19:29,728 INFO L225 Difference]: With dead ends: 1212 [2022-11-25 22:19:29,729 INFO L226 Difference]: Without dead ends: 713 [2022-11-25 22:19:29,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:19:29,741 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 62 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 22:19:29,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 58 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 22:19:29,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2022-11-25 22:19:29,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 642. [2022-11-25 22:19:29,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 1.5210608424336973) internal successors, (975), 641 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:19:29,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 975 transitions. [2022-11-25 22:19:29,773 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 975 transitions. Word has length 86 [2022-11-25 22:19:29,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:19:29,774 INFO L495 AbstractCegarLoop]: Abstraction has 642 states and 975 transitions. [2022-11-25 22:19:29,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:19:29,775 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 975 transitions. [2022-11-25 22:19:29,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-25 22:19:29,781 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:19:29,781 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-25 22:19:29,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 22:19:29,782 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:19:29,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:19:29,783 INFO L85 PathProgramCache]: Analyzing trace with hash -2013623707, now seen corresponding path program 1 times [2022-11-25 22:19:29,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:19:29,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078215311] [2022-11-25 22:19:29,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:19:29,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:19:29,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:19:29,987 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:19:29,987 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:19:29,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078215311] [2022-11-25 22:19:29,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078215311] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:19:29,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:19:29,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:19:29,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107878736] [2022-11-25 22:19:29,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:19:29,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:19:29,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:19:29,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:19:29,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:19:29,990 INFO L87 Difference]: Start difference. First operand 642 states and 975 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 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) [2022-11-25 22:19:30,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:19:30,451 INFO L93 Difference]: Finished difference Result 1496 states and 2210 transitions. [2022-11-25 22:19:30,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 22:19:30,452 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 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 [2022-11-25 22:19:30,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:19:30,456 INFO L225 Difference]: With dead ends: 1496 [2022-11-25 22:19:30,456 INFO L226 Difference]: Without dead ends: 855 [2022-11-25 22:19:30,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:19:30,458 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 138 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 22:19:30,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 55 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 22:19:30,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2022-11-25 22:19:30,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 784. [2022-11-25 22:19:30,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 783 states have (on average 1.4572158365261814) internal successors, (1141), 783 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:19:30,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1141 transitions. [2022-11-25 22:19:30,494 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1141 transitions. Word has length 90 [2022-11-25 22:19:30,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:19:30,495 INFO L495 AbstractCegarLoop]: Abstraction has 784 states and 1141 transitions. [2022-11-25 22:19:30,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 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) [2022-11-25 22:19:30,495 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1141 transitions. [2022-11-25 22:19:30,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-25 22:19:30,497 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:19:30,497 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:19:30,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 22:19:30,497 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:19:30,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:19:30,498 INFO L85 PathProgramCache]: Analyzing trace with hash 683567270, now seen corresponding path program 1 times [2022-11-25 22:19:30,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:19:30,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236979903] [2022-11-25 22:19:30,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:19:30,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:19:30,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:19:30,641 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:19:30,641 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:19:30,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236979903] [2022-11-25 22:19:30,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236979903] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:19:30,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:19:30,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:19:30,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712708097] [2022-11-25 22:19:30,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:19:30,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:19:30,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:19:30,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:19:30,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:19:30,643 INFO L87 Difference]: Start difference. First operand 784 states and 1141 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:19:30,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:19:30,982 INFO L93 Difference]: Finished difference Result 1638 states and 2358 transitions. [2022-11-25 22:19:30,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:19:30,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2022-11-25 22:19:30,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:19:30,986 INFO L225 Difference]: With dead ends: 1638 [2022-11-25 22:19:30,987 INFO L226 Difference]: Without dead ends: 855 [2022-11-25 22:19:30,988 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 [2022-11-25 22:19:30,988 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 3 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 22:19:30,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 126 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 22:19:30,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2022-11-25 22:19:31,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 784. [2022-11-25 22:19:31,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 783 states have (on average 1.3780332056194124) internal successors, (1079), 783 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:19:31,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1079 transitions. [2022-11-25 22:19:31,008 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1079 transitions. Word has length 108 [2022-11-25 22:19:31,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:19:31,009 INFO L495 AbstractCegarLoop]: Abstraction has 784 states and 1079 transitions. [2022-11-25 22:19:31,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:19:31,009 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1079 transitions. [2022-11-25 22:19:31,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-25 22:19:31,010 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:19:31,011 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, 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] [2022-11-25 22:19:31,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 22:19:31,011 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:19:31,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:19:31,012 INFO L85 PathProgramCache]: Analyzing trace with hash -2143088987, now seen corresponding path program 1 times [2022-11-25 22:19:31,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:19:31,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211070733] [2022-11-25 22:19:31,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:19:31,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:19:31,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:19:31,132 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 22:19:31,133 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:19:31,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211070733] [2022-11-25 22:19:31,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211070733] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:19:31,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:19:31,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:19:31,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060926968] [2022-11-25 22:19:31,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:19:31,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:19:31,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:19:31,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:19:31,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:19:31,135 INFO L87 Difference]: Start difference. First operand 784 states and 1079 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:19:31,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:19:31,516 INFO L93 Difference]: Finished difference Result 1709 states and 2366 transitions. [2022-11-25 22:19:31,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:19:31,516 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 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 121 [2022-11-25 22:19:31,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:19:31,520 INFO L225 Difference]: With dead ends: 1709 [2022-11-25 22:19:31,520 INFO L226 Difference]: Without dead ends: 926 [2022-11-25 22:19:31,521 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 [2022-11-25 22:19:31,522 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 12 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 22:19:31,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 125 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 22:19:31,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2022-11-25 22:19:31,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 926. [2022-11-25 22:19:31,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 925 states have (on average 1.332972972972973) internal successors, (1233), 925 states have internal predecessors, (1233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:19:31,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1233 transitions. [2022-11-25 22:19:31,551 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1233 transitions. Word has length 121 [2022-11-25 22:19:31,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:19:31,552 INFO L495 AbstractCegarLoop]: Abstraction has 926 states and 1233 transitions. [2022-11-25 22:19:31,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:19:31,552 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1233 transitions. [2022-11-25 22:19:31,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-25 22:19:31,558 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:19:31,558 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:19:31,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 22:19:31,558 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:19:31,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:19:31,560 INFO L85 PathProgramCache]: Analyzing trace with hash 2040987898, now seen corresponding path program 1 times [2022-11-25 22:19:31,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:19:31,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348204039] [2022-11-25 22:19:31,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:19:31,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:19:31,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:19:31,786 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:19:31,786 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:19:31,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348204039] [2022-11-25 22:19:31,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348204039] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:19:31,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:19:31,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:19:31,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496494067] [2022-11-25 22:19:31,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:19:31,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:19:31,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:19:31,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:19:31,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:19:31,789 INFO L87 Difference]: Start difference. First operand 926 states and 1233 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:19:32,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:19:32,260 INFO L93 Difference]: Finished difference Result 1993 states and 2656 transitions. [2022-11-25 22:19:32,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 22:19:32,261 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2022-11-25 22:19:32,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:19:32,264 INFO L225 Difference]: With dead ends: 1993 [2022-11-25 22:19:32,264 INFO L226 Difference]: Without dead ends: 1068 [2022-11-25 22:19:32,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:19:32,266 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 154 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 22:19:32,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 43 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 22:19:32,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2022-11-25 22:19:32,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 997. [2022-11-25 22:19:32,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 996 states have (on average 1.2730923694779117) internal successors, (1268), 996 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:19:32,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1268 transitions. [2022-11-25 22:19:32,310 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1268 transitions. Word has length 121 [2022-11-25 22:19:32,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:19:32,310 INFO L495 AbstractCegarLoop]: Abstraction has 997 states and 1268 transitions. [2022-11-25 22:19:32,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:19:32,311 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1268 transitions. [2022-11-25 22:19:32,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-11-25 22:19:32,314 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:19:32,314 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:19:32,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 22:19:32,314 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:19:32,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:19:32,315 INFO L85 PathProgramCache]: Analyzing trace with hash -269120708, now seen corresponding path program 1 times [2022-11-25 22:19:32,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:19:32,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68324603] [2022-11-25 22:19:32,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:19:32,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:19:32,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:19:32,653 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 85 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:19:32,653 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:19:32,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68324603] [2022-11-25 22:19:32,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68324603] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:19:32,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631572670] [2022-11-25 22:19:32,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:19:32,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:19:32,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372c73bd-8727-41a5-abc9-42ebf22393f6/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:19:32,666 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372c73bd-8727-41a5-abc9-42ebf22393f6/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:19:32,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372c73bd-8727-41a5-abc9-42ebf22393f6/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 22:19:32,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:19:32,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 22:19:32,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:19:33,081 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-25 22:19:33,081 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:19:33,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631572670] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:19:33,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:19:33,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-25 22:19:33,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614628694] [2022-11-25 22:19:33,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:19:33,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:19:33,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:19:33,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:19:33,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:19:33,084 INFO L87 Difference]: Start difference. First operand 997 states and 1268 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) [2022-11-25 22:19:33,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:19:33,439 INFO L93 Difference]: Finished difference Result 2204 states and 2801 transitions. [2022-11-25 22:19:33,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:19:33,440 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 151 [2022-11-25 22:19:33,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:19:33,440 INFO L225 Difference]: With dead ends: 2204 [2022-11-25 22:19:33,441 INFO L226 Difference]: Without dead ends: 0 [2022-11-25 22:19:33,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:19:33,443 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 9 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 22:19:33,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 123 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 22:19:33,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-25 22:19:33,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-25 22:19:33,446 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) [2022-11-25 22:19:33,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-25 22:19:33,446 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 151 [2022-11-25 22:19:33,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:19:33,447 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-25 22:19:33,448 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) [2022-11-25 22:19:33,448 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-25 22:19:33,448 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-25 22:19:33,450 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-25 22:19:33,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372c73bd-8727-41a5-abc9-42ebf22393f6/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 22:19:33,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372c73bd-8727-41a5-abc9-42ebf22393f6/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:19:33,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-25 22:19:34,101 INFO L899 garLoopResultBuilder]: For program point L102(lines 102 400) no Hoare annotation was computed. [2022-11-25 22:19:34,101 INFO L899 garLoopResultBuilder]: For program point L598(line 598) no Hoare annotation was computed. [2022-11-25 22:19:34,101 INFO L899 garLoopResultBuilder]: For program point L334(lines 334 400) no Hoare annotation was computed. [2022-11-25 22:19:34,101 INFO L899 garLoopResultBuilder]: For program point L302(lines 302 400) no Hoare annotation was computed. [2022-11-25 22:19:34,101 INFO L899 garLoopResultBuilder]: For program point L170(lines 170 400) no Hoare annotation was computed. [2022-11-25 22:19:34,101 INFO L899 garLoopResultBuilder]: For program point L204(lines 204 400) no Hoare annotation was computed. [2022-11-25 22:19:34,101 INFO L899 garLoopResultBuilder]: For program point L72(lines 72 400) no Hoare annotation was computed. [2022-11-25 22:19:34,101 INFO L899 garLoopResultBuilder]: For program point L271(lines 271 400) no Hoare annotation was computed. [2022-11-25 22:19:34,101 INFO L899 garLoopResultBuilder]: For program point L139(lines 139 400) no Hoare annotation was computed. [2022-11-25 22:19:34,102 INFO L899 garLoopResultBuilder]: For program point L371(lines 371 400) no Hoare annotation was computed. [2022-11-25 22:19:34,102 INFO L899 garLoopResultBuilder]: For program point L107(lines 107 400) no Hoare annotation was computed. [2022-11-25 22:19:34,102 INFO L899 garLoopResultBuilder]: For program point L41(lines 41 400) no Hoare annotation was computed. [2022-11-25 22:19:34,102 INFO L899 garLoopResultBuilder]: For program point L339(lines 339 400) no Hoare annotation was computed. [2022-11-25 22:19:34,102 INFO L899 garLoopResultBuilder]: For program point L207(lines 207 400) no Hoare annotation was computed. [2022-11-25 22:19:34,102 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 400) no Hoare annotation was computed. [2022-11-25 22:19:34,102 INFO L899 garLoopResultBuilder]: For program point L373(lines 373 400) no Hoare annotation was computed. [2022-11-25 22:19:34,102 INFO L899 garLoopResultBuilder]: For program point L241(lines 241 400) no Hoare annotation was computed. [2022-11-25 22:19:34,102 INFO L899 garLoopResultBuilder]: For program point L175(lines 175 400) no Hoare annotation was computed. [2022-11-25 22:19:34,102 INFO L899 garLoopResultBuilder]: For program point L275(lines 275 400) no Hoare annotation was computed. [2022-11-25 22:19:34,102 INFO L899 garLoopResultBuilder]: For program point L375(lines 375 400) no Hoare annotation was computed. [2022-11-25 22:19:34,102 INFO L899 garLoopResultBuilder]: For program point L309(lines 309 400) no Hoare annotation was computed. [2022-11-25 22:19:34,103 INFO L899 garLoopResultBuilder]: For program point L45(lines 45 400) no Hoare annotation was computed. [2022-11-25 22:19:34,103 INFO L899 garLoopResultBuilder]: For program point L343(lines 343 400) no Hoare annotation was computed. [2022-11-25 22:19:34,103 INFO L899 garLoopResultBuilder]: For program point L112(lines 112 400) no Hoare annotation was computed. [2022-11-25 22:19:34,103 INFO L899 garLoopResultBuilder]: For program point L278(lines 278 400) no Hoare annotation was computed. [2022-11-25 22:19:34,103 INFO L899 garLoopResultBuilder]: For program point L146(lines 146 400) no Hoare annotation was computed. [2022-11-25 22:19:34,103 INFO L899 garLoopResultBuilder]: For program point L213(lines 213 400) no Hoare annotation was computed. [2022-11-25 22:19:34,103 INFO L899 garLoopResultBuilder]: For program point L82(lines 82 400) no Hoare annotation was computed. [2022-11-25 22:19:34,103 INFO L899 garLoopResultBuilder]: For program point L446-1(lines 40 585) no Hoare annotation was computed. [2022-11-25 22:19:34,103 INFO L899 garLoopResultBuilder]: For program point L347(lines 347 400) no Hoare annotation was computed. [2022-11-25 22:19:34,103 INFO L899 garLoopResultBuilder]: For program point L248(lines 248 400) no Hoare annotation was computed. [2022-11-25 22:19:34,104 INFO L899 garLoopResultBuilder]: For program point L183(lines 183 400) no Hoare annotation was computed. [2022-11-25 22:19:34,104 INFO L899 garLoopResultBuilder]: For program point L150(lines 150 400) no Hoare annotation was computed. [2022-11-25 22:19:34,104 INFO L899 garLoopResultBuilder]: For program point L382(lines 382 400) no Hoare annotation was computed. [2022-11-25 22:19:34,104 INFO L899 garLoopResultBuilder]: For program point L316(lines 316 400) no Hoare annotation was computed. [2022-11-25 22:19:34,104 INFO L899 garLoopResultBuilder]: For program point L283(lines 283 400) no Hoare annotation was computed. [2022-11-25 22:19:34,104 INFO L899 garLoopResultBuilder]: For program point L118(lines 118 400) no Hoare annotation was computed. [2022-11-25 22:19:34,104 INFO L899 garLoopResultBuilder]: For program point L449-1(lines 40 585) no Hoare annotation was computed. [2022-11-25 22:19:34,104 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-25 22:19:34,104 INFO L899 garLoopResultBuilder]: For program point L218(lines 218 400) no Hoare annotation was computed. [2022-11-25 22:19:34,104 INFO L899 garLoopResultBuilder]: For program point L53(lines 53 400) no Hoare annotation was computed. [2022-11-25 22:19:34,104 INFO L899 garLoopResultBuilder]: For program point L450(line 450) no Hoare annotation was computed. [2022-11-25 22:19:34,104 INFO L899 garLoopResultBuilder]: For program point L154(lines 154 400) no Hoare annotation was computed. [2022-11-25 22:19:34,105 INFO L895 garLoopResultBuilder]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse6 (= ~a20~0 1))) (let ((.cse4 (= ~a17~0 1)) (.cse1 (= ~a16~0 6)) (.cse7 (not (= ~a7~0 1))) (.cse3 (<= ~a8~0 14)) (.cse0 (not .cse6)) (.cse2 (= ~a21~0 1)) (.cse5 (<= ~a16~0 5))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4 .cse5) (and .cse2 .cse4 .cse6) (and .cse7 .cse2 .cse5) (and .cse1 .cse3 .cse6) (and .cse1 .cse7 .cse2) (and .cse3 .cse5 .cse6) (and .cse0 .cse2 .cse5)))) [2022-11-25 22:19:34,105 INFO L899 garLoopResultBuilder]: For program point L188(lines 188 400) no Hoare annotation was computed. [2022-11-25 22:19:34,105 INFO L899 garLoopResultBuilder]: For program point L387(lines 387 400) no Hoare annotation was computed. [2022-11-25 22:19:34,105 INFO L899 garLoopResultBuilder]: For program point L288(lines 288 400) no Hoare annotation was computed. [2022-11-25 22:19:34,105 INFO L899 garLoopResultBuilder]: For program point L255(lines 255 400) no Hoare annotation was computed. [2022-11-25 22:19:34,105 INFO L899 garLoopResultBuilder]: For program point L90(lines 90 400) no Hoare annotation was computed. [2022-11-25 22:19:34,105 INFO L899 garLoopResultBuilder]: For program point L355(lines 355 400) no Hoare annotation was computed. [2022-11-25 22:19:34,106 INFO L899 garLoopResultBuilder]: For program point L322(lines 322 400) no Hoare annotation was computed. [2022-11-25 22:19:34,106 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-25 22:19:34,106 INFO L899 garLoopResultBuilder]: For program point L124(lines 124 400) no Hoare annotation was computed. [2022-11-25 22:19:34,106 INFO L902 garLoopResultBuilder]: At program point L587(lines 587 604) the Hoare annotation is: true [2022-11-25 22:19:34,106 INFO L899 garLoopResultBuilder]: For program point L224(lines 224 400) no Hoare annotation was computed. [2022-11-25 22:19:34,110 INFO L899 garLoopResultBuilder]: For program point L158(lines 158 400) no Hoare annotation was computed. [2022-11-25 22:19:34,110 INFO L899 garLoopResultBuilder]: For program point L59(lines 59 400) no Hoare annotation was computed. [2022-11-25 22:19:34,110 INFO L899 garLoopResultBuilder]: For program point L94(lines 94 400) no Hoare annotation was computed. [2022-11-25 22:19:34,110 INFO L899 garLoopResultBuilder]: For program point L392(lines 392 400) no Hoare annotation was computed. [2022-11-25 22:19:34,110 INFO L899 garLoopResultBuilder]: For program point L326(lines 326 400) no Hoare annotation was computed. [2022-11-25 22:19:34,110 INFO L899 garLoopResultBuilder]: For program point L260(lines 260 400) no Hoare annotation was computed. [2022-11-25 22:19:34,111 INFO L899 garLoopResultBuilder]: For program point L228(lines 228 400) no Hoare annotation was computed. [2022-11-25 22:19:34,111 INFO L899 garLoopResultBuilder]: For program point L162(lines 162 400) no Hoare annotation was computed. [2022-11-25 22:19:34,111 INFO L899 garLoopResultBuilder]: For program point L129(lines 129 400) no Hoare annotation was computed. [2022-11-25 22:19:34,112 INFO L899 garLoopResultBuilder]: For program point L328(lines 328 400) no Hoare annotation was computed. [2022-11-25 22:19:34,112 INFO L899 garLoopResultBuilder]: For program point L196(lines 196 400) no Hoare annotation was computed. [2022-11-25 22:19:34,112 INFO L899 garLoopResultBuilder]: For program point L64(lines 64 400) no Hoare annotation was computed. [2022-11-25 22:19:34,114 INFO L895 garLoopResultBuilder]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse6 (= ~a20~0 1))) (let ((.cse4 (= ~a17~0 1)) (.cse1 (= ~a16~0 6)) (.cse7 (not (= ~a7~0 1))) (.cse3 (<= ~a8~0 14)) (.cse0 (not .cse6)) (.cse2 (= ~a21~0 1)) (.cse5 (<= ~a16~0 5))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4 .cse5) (and .cse2 .cse4 .cse6) (and .cse7 .cse2 .cse5) (and .cse1 .cse3 .cse6) (and .cse1 .cse7 .cse2) (and .cse3 .cse5 .cse6) (and .cse0 .cse2 .cse5)))) [2022-11-25 22:19:34,115 INFO L899 garLoopResultBuilder]: For program point L296(lines 296 400) no Hoare annotation was computed. [2022-11-25 22:19:34,116 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 450) no Hoare annotation was computed. [2022-11-25 22:19:34,116 INFO L899 garLoopResultBuilder]: For program point L363(lines 363 400) no Hoare annotation was computed. [2022-11-25 22:19:34,116 INFO L899 garLoopResultBuilder]: For program point L199(lines 199 400) no Hoare annotation was computed. [2022-11-25 22:19:34,116 INFO L899 garLoopResultBuilder]: For program point L365(lines 365 400) no Hoare annotation was computed. [2022-11-25 22:19:34,116 INFO L899 garLoopResultBuilder]: For program point L266(lines 266 400) no Hoare annotation was computed. [2022-11-25 22:19:34,117 INFO L899 garLoopResultBuilder]: For program point L233(lines 233 400) no Hoare annotation was computed. [2022-11-25 22:19:34,117 INFO L899 garLoopResultBuilder]: For program point L134(lines 134 400) no Hoare annotation was computed. [2022-11-25 22:19:34,120 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:19:34,122 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 22:19:34,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 10:19:34 BoogieIcfgContainer [2022-11-25 22:19:34,160 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 22:19:34,160 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 22:19:34,161 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 22:19:34,161 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 22:19:34,161 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:19:26" (3/4) ... [2022-11-25 22:19:34,164 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 22:19:34,191 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 110 nodes and edges [2022-11-25 22:19:34,192 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2022-11-25 22:19:34,193 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-11-25 22:19:34,194 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 22:19:34,315 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372c73bd-8727-41a5-abc9-42ebf22393f6/bin/utaipan-ByfvJB40ur/witness.graphml [2022-11-25 22:19:34,316 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 22:19:34,316 INFO L158 Benchmark]: Toolchain (without parser) took 10725.48ms. Allocated memory was 155.2MB in the beginning and 283.1MB in the end (delta: 127.9MB). Free memory was 107.0MB in the beginning and 133.4MB in the end (delta: -26.4MB). Peak memory consumption was 102.8MB. Max. memory is 16.1GB. [2022-11-25 22:19:34,317 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 155.2MB. Free memory is still 96.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 22:19:34,317 INFO L158 Benchmark]: CACSL2BoogieTranslator took 700.20ms. Allocated memory is still 155.2MB. Free memory was 106.6MB in the beginning and 79.2MB in the end (delta: 27.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-11-25 22:19:34,318 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.00ms. Allocated memory is still 155.2MB. Free memory was 79.2MB in the beginning and 73.5MB in the end (delta: 5.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-25 22:19:34,318 INFO L158 Benchmark]: Boogie Preprocessor took 53.00ms. Allocated memory is still 155.2MB. Free memory was 73.5MB in the beginning and 68.8MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 22:19:34,318 INFO L158 Benchmark]: RCFGBuilder took 1642.13ms. Allocated memory was 155.2MB in the beginning and 195.0MB in the end (delta: 39.8MB). Free memory was 68.8MB in the beginning and 134.8MB in the end (delta: -66.0MB). Peak memory consumption was 43.7MB. Max. memory is 16.1GB. [2022-11-25 22:19:34,319 INFO L158 Benchmark]: TraceAbstraction took 8090.74ms. Allocated memory was 195.0MB in the beginning and 283.1MB in the end (delta: 88.1MB). Free memory was 133.8MB in the beginning and 143.9MB in the end (delta: -10.1MB). Peak memory consumption was 82.1MB. Max. memory is 16.1GB. [2022-11-25 22:19:34,320 INFO L158 Benchmark]: Witness Printer took 155.16ms. Allocated memory is still 283.1MB. Free memory was 143.9MB in the beginning and 133.4MB in the end (delta: 10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-25 22:19:34,323 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 155.2MB. Free memory is still 96.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 700.20ms. Allocated memory is still 155.2MB. Free memory was 106.6MB in the beginning and 79.2MB in the end (delta: 27.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 76.00ms. Allocated memory is still 155.2MB. Free memory was 79.2MB in the beginning and 73.5MB in the end (delta: 5.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.00ms. Allocated memory is still 155.2MB. Free memory was 73.5MB in the beginning and 68.8MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1642.13ms. Allocated memory was 155.2MB in the beginning and 195.0MB in the end (delta: 39.8MB). Free memory was 68.8MB in the beginning and 134.8MB in the end (delta: -66.0MB). Peak memory consumption was 43.7MB. Max. memory is 16.1GB. * TraceAbstraction took 8090.74ms. Allocated memory was 195.0MB in the beginning and 283.1MB in the end (delta: 88.1MB). Free memory was 133.8MB in the beginning and 143.9MB in the end (delta: -10.1MB). Peak memory consumption was 82.1MB. Max. memory is 16.1GB. * Witness Printer took 155.16ms. Allocated memory is still 283.1MB. Free memory was 143.9MB in the beginning and 133.4MB in the end (delta: 10.5MB). Peak memory consumption was 8.4MB. 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: 450]: 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, 76 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.0s, OverallIterations: 10, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 662 SdHoareTripleChecker+Valid, 3.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 662 mSDsluCounter, 654 SdHoareTripleChecker+Invalid, 3.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 45 mSDsCounter, 652 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2359 IncrementalHoareTripleChecker+Invalid, 3011 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 652 mSolverCounterUnsat, 609 mSDtfsCounter, 2359 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 176 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=997occurred in iteration=9, InterpolantAutomatonStates: 32, 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, 10 MinimizatonAttempts, 284 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 39 NumberOfFragments, 171 HoareAnnotationTreeSize, 3 FomulaSimplifications, 6 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 1286 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 1139 NumberOfCodeBlocks, 1139 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1128 ConstructedInterpolants, 0 QuantifiedInterpolants, 2681 SizeOfPredicates, 0 NumberOfNonLiveVariables, 334 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 11 InterpolantComputations, 10 PerfectInterpolantSequences, 408/438 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: 593]: Loop Invariant Derived loop invariant: ((((((((!(a20 == 1) && a16 == 6) && a21 == 1) || ((a8 <= 14 && a17 == 1) && a16 <= 5)) || ((a21 == 1 && a17 == 1) && a20 == 1)) || ((!(a7 == 1) && a21 == 1) && a16 <= 5)) || ((a16 == 6 && a8 <= 14) && a20 == 1)) || ((a16 == 6 && !(a7 == 1)) && a21 == 1)) || ((a8 <= 14 && a16 <= 5) && a20 == 1)) || ((!(a20 == 1) && a21 == 1) && a16 <= 5) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((((((((!(a20 == 1) && a16 == 6) && a21 == 1) || ((a8 <= 14 && a17 == 1) && a16 <= 5)) || ((a21 == 1 && a17 == 1) && a20 == 1)) || ((!(a7 == 1) && a21 == 1) && a16 <= 5)) || ((a16 == 6 && a8 <= 14) && a20 == 1)) || ((a16 == 6 && !(a7 == 1)) && a21 == 1)) || ((a8 <= 14 && a16 <= 5) && a20 == 1)) || ((!(a20 == 1) && a21 == 1) && a16 <= 5) RESULT: Ultimate proved your program to be correct! [2022-11-25 22:19:34,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372c73bd-8727-41a5-abc9-42ebf22393f6/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE