./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label12.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8718c7d7-ed44-44a5-8f8a-4a39f96518c0/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8718c7d7-ed44-44a5-8f8a-4a39f96518c0/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8718c7d7-ed44-44a5-8f8a-4a39f96518c0/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8718c7d7-ed44-44a5-8f8a-4a39f96518c0/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label12.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8718c7d7-ed44-44a5-8f8a-4a39f96518c0/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8718c7d7-ed44-44a5-8f8a-4a39f96518c0/bin/utaipan-eEHZpOm5b7 --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 0a8fad34c1b6bf866cbe15b5ea976119cea35289eea577e5c8022c9572a9ef52 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:37:26,523 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:37:26,525 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:37:26,556 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:37:26,556 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:37:26,558 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:37:26,560 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:37:26,562 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:37:26,565 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:37:26,566 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:37:26,567 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:37:26,569 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:37:26,569 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:37:26,571 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:37:26,572 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:37:26,574 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:37:26,575 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:37:26,577 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:37:26,579 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:37:26,581 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:37:26,583 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:37:26,585 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:37:26,587 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:37:26,588 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:37:26,591 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:37:26,592 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:37:26,592 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:37:26,593 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:37:26,594 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:37:26,595 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:37:26,596 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:37:26,597 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:37:26,598 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:37:26,599 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:37:26,600 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:37:26,601 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:37:26,601 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:37:26,602 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:37:26,602 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:37:26,603 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:37:26,604 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:37:26,605 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8718c7d7-ed44-44a5-8f8a-4a39f96518c0/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 19:37:26,645 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:37:26,646 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:37:26,646 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:37:26,646 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:37:26,647 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:37:26,647 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:37:26,647 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:37:26,647 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:37:26,647 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:37:26,648 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:37:26,648 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:37:26,648 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:37:26,648 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:37:26,648 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:37:26,649 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:37:26,649 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:37:26,649 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:37:26,649 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:37:26,650 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:37:26,650 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:37:26,651 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:37:26,651 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:37:26,651 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:37:26,651 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:37:26,651 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:37:26,652 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:37:26,652 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:37:26,652 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:37:26,652 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:37:26,652 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:37:26,653 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:37:26,653 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:37:26,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:37:26,653 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:37:26,654 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:37:26,654 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:37:26,654 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:37:26,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:37:26,654 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:37:26,655 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:37:26,655 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:37:26,655 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_8718c7d7-ed44-44a5-8f8a-4a39f96518c0/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8718c7d7-ed44-44a5-8f8a-4a39f96518c0/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a8fad34c1b6bf866cbe15b5ea976119cea35289eea577e5c8022c9572a9ef52 [2021-11-25 19:37:26,902 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:37:26,927 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:37:26,929 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:37:26,931 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:37:26,932 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:37:26,933 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8718c7d7-ed44-44a5-8f8a-4a39f96518c0/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/eca-rers2012/Problem02_label12.c [2021-11-25 19:37:27,001 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8718c7d7-ed44-44a5-8f8a-4a39f96518c0/bin/utaipan-eEHZpOm5b7/data/9303460a1/5ffaec6f18b0476d894ae3c340e029e9/FLAG0b4f8cbfb [2021-11-25 19:37:27,646 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:37:27,647 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8718c7d7-ed44-44a5-8f8a-4a39f96518c0/sv-benchmarks/c/eca-rers2012/Problem02_label12.c [2021-11-25 19:37:27,665 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8718c7d7-ed44-44a5-8f8a-4a39f96518c0/bin/utaipan-eEHZpOm5b7/data/9303460a1/5ffaec6f18b0476d894ae3c340e029e9/FLAG0b4f8cbfb [2021-11-25 19:37:27,845 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8718c7d7-ed44-44a5-8f8a-4a39f96518c0/bin/utaipan-eEHZpOm5b7/data/9303460a1/5ffaec6f18b0476d894ae3c340e029e9 [2021-11-25 19:37:27,848 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:37:27,849 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:37:27,851 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:37:27,851 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:37:27,859 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:37:27,860 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:37:27" (1/1) ... [2021-11-25 19:37:27,861 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@726ff11a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:37:27, skipping insertion in model container [2021-11-25 19:37:27,861 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:37:27" (1/1) ... [2021-11-25 19:37:27,867 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:37:27,933 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:37:28,304 WARN L230 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_8718c7d7-ed44-44a5-8f8a-4a39f96518c0/sv-benchmarks/c/eca-rers2012/Problem02_label12.c[18829,18842] [2021-11-25 19:37:28,340 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:37:28,348 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:37:28,453 WARN L230 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_8718c7d7-ed44-44a5-8f8a-4a39f96518c0/sv-benchmarks/c/eca-rers2012/Problem02_label12.c[18829,18842] [2021-11-25 19:37:28,465 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:37:28,479 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:37:28,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:37:28 WrapperNode [2021-11-25 19:37:28,480 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:37:28,481 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:37:28,481 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:37:28,481 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:37:28,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:37:28" (1/1) ... [2021-11-25 19:37:28,513 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:37:28" (1/1) ... [2021-11-25 19:37:28,581 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 668 [2021-11-25 19:37:28,584 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:37:28,586 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:37:28,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:37:28,586 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:37:28,594 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:37:28" (1/1) ... [2021-11-25 19:37:28,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:37:28" (1/1) ... [2021-11-25 19:37:28,606 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:37:28" (1/1) ... [2021-11-25 19:37:28,607 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:37:28" (1/1) ... [2021-11-25 19:37:28,647 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:37:28" (1/1) ... [2021-11-25 19:37:28,660 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:37:28" (1/1) ... [2021-11-25 19:37:28,681 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:37:28" (1/1) ... [2021-11-25 19:37:28,701 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:37:28,703 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:37:28,703 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:37:28,703 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:37:28,704 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:37:28" (1/1) ... [2021-11-25 19:37:28,711 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:37:28,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8718c7d7-ed44-44a5-8f8a-4a39f96518c0/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:37:28,735 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8718c7d7-ed44-44a5-8f8a-4a39f96518c0/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:37:28,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8718c7d7-ed44-44a5-8f8a-4a39f96518c0/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:37:28,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:37:28,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:37:28,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:37:28,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:37:28,926 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:37:28,928 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:37:29,737 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:37:29,975 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:37:29,975 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 19:37:29,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:37:29 BoogieIcfgContainer [2021-11-25 19:37:29,979 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:37:29,984 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:37:29,984 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:37:29,987 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:37:29,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:37:27" (1/3) ... [2021-11-25 19:37:29,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@283361c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:37:29, skipping insertion in model container [2021-11-25 19:37:29,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:37:28" (2/3) ... [2021-11-25 19:37:29,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@283361c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:37:29, skipping insertion in model container [2021-11-25 19:37:29,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:37:29" (3/3) ... [2021-11-25 19:37:29,992 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label12.c [2021-11-25 19:37:30,001 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:37:30,001 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:37:30,067 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:37:30,079 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 19:37:30,079 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 19:37:30,108 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:37:30,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-25 19:37:30,120 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:37:30,121 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:37:30,122 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:37:30,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:37:30,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1243329782, now seen corresponding path program 1 times [2021-11-25 19:37:30,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:37:30,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981236142] [2021-11-25 19:37:30,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:37:30,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:37:30,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:37:30,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:37:30,564 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:37:30,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981236142] [2021-11-25 19:37:30,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981236142] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:37:30,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:37:30,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:37:30,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621662222] [2021-11-25 19:37:30,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:37:30,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:37:30,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:37:30,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:37:30,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:37:30,614 INFO L87 Difference]: Start difference. First operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:37:31,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:37:31,189 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2021-11-25 19:37:31,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:37:31,191 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 [2021-11-25 19:37:31,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:37:31,212 INFO L225 Difference]: With dead ends: 251 [2021-11-25 19:37:31,213 INFO L226 Difference]: Without dead ends: 163 [2021-11-25 19:37:31,216 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:37:31,221 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 58 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:37:31,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 11 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 19:37:31,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-11-25 19:37:31,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-11-25 19:37:31,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.9320987654320987) internal successors, (313), 162 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:37:31,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 313 transitions. [2021-11-25 19:37:31,277 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 313 transitions. Word has length 80 [2021-11-25 19:37:31,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:37:31,278 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 313 transitions. [2021-11-25 19:37:31,281 INFO L471 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) [2021-11-25 19:37:31,281 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 313 transitions. [2021-11-25 19:37:31,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-25 19:37:31,286 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:37:31,286 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:37:31,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:37:31,287 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:37:31,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:37:31,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1299307862, now seen corresponding path program 1 times [2021-11-25 19:37:31,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:37:31,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432926125] [2021-11-25 19:37:31,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:37:31,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:37:31,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:37:31,361 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:37:31,361 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:37:31,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432926125] [2021-11-25 19:37:31,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432926125] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:37:31,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:37:31,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:37:31,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349944263] [2021-11-25 19:37:31,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:37:31,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:37:31,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:37:31,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:37:31,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:37:31,365 INFO L87 Difference]: Start difference. First operand 163 states and 313 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:37:31,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:37:31,754 INFO L93 Difference]: Finished difference Result 485 states and 936 transitions. [2021-11-25 19:37:31,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:37:31,755 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2021-11-25 19:37:31,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:37:31,758 INFO L225 Difference]: With dead ends: 485 [2021-11-25 19:37:31,759 INFO L226 Difference]: Without dead ends: 323 [2021-11-25 19:37:31,760 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:37:31,762 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 113 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:37:31,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 21 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 19:37:31,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-11-25 19:37:31,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 243. [2021-11-25 19:37:31,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 1.871900826446281) internal successors, (453), 242 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:37:31,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 453 transitions. [2021-11-25 19:37:31,784 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 453 transitions. Word has length 91 [2021-11-25 19:37:31,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:37:31,784 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 453 transitions. [2021-11-25 19:37:31,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:37:31,785 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 453 transitions. [2021-11-25 19:37:31,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-25 19:37:31,788 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:37:31,789 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:37:31,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 19:37:31,789 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:37:31,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:37:31,790 INFO L85 PathProgramCache]: Analyzing trace with hash 726156053, now seen corresponding path program 1 times [2021-11-25 19:37:31,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:37:31,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182815638] [2021-11-25 19:37:31,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:37:31,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:37:31,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:37:31,859 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:37:31,859 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:37:31,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182815638] [2021-11-25 19:37:31,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182815638] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:37:31,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:37:31,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:37:31,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977619393] [2021-11-25 19:37:31,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:37:31,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:37:31,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:37:31,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:37:31,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:37:31,863 INFO L87 Difference]: Start difference. First operand 243 states and 453 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:37:32,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:37:32,187 INFO L93 Difference]: Finished difference Result 727 states and 1357 transitions. [2021-11-25 19:37:32,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:37:32,188 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-25 19:37:32,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:37:32,192 INFO L225 Difference]: With dead ends: 727 [2021-11-25 19:37:32,192 INFO L226 Difference]: Without dead ends: 485 [2021-11-25 19:37:32,194 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:37:32,195 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 81 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:37:32,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 63 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:37:32,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2021-11-25 19:37:32,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 483. [2021-11-25 19:37:32,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.7821576763485478) internal successors, (859), 482 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:37:32,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 859 transitions. [2021-11-25 19:37:32,229 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 859 transitions. Word has length 98 [2021-11-25 19:37:32,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:37:32,229 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 859 transitions. [2021-11-25 19:37:32,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:37:32,230 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 859 transitions. [2021-11-25 19:37:32,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-25 19:37:32,235 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:37:32,235 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:37:32,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 19:37:32,236 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:37:32,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:37:32,237 INFO L85 PathProgramCache]: Analyzing trace with hash 65851338, now seen corresponding path program 1 times [2021-11-25 19:37:32,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:37:32,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644488478] [2021-11-25 19:37:32,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:37:32,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:37:32,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:37:32,317 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:37:32,318 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:37:32,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644488478] [2021-11-25 19:37:32,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644488478] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:37:32,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:37:32,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:37:32,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834056156] [2021-11-25 19:37:32,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:37:32,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:37:32,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:37:32,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:37:32,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:37:32,321 INFO L87 Difference]: Start difference. First operand 483 states and 859 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:37:32,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:37:32,755 INFO L93 Difference]: Finished difference Result 1205 states and 2153 transitions. [2021-11-25 19:37:32,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:37:32,756 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 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 102 [2021-11-25 19:37:32,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:37:32,761 INFO L225 Difference]: With dead ends: 1205 [2021-11-25 19:37:32,761 INFO L226 Difference]: Without dead ends: 723 [2021-11-25 19:37:32,762 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:37:32,764 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 78 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:37:32,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 66 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 19:37:32,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2021-11-25 19:37:32,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 643. [2021-11-25 19:37:32,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 642 states have (on average 1.6261682242990654) internal successors, (1044), 642 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:37:32,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 1044 transitions. [2021-11-25 19:37:32,788 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 1044 transitions. Word has length 102 [2021-11-25 19:37:32,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:37:32,789 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 1044 transitions. [2021-11-25 19:37:32,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:37:32,790 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 1044 transitions. [2021-11-25 19:37:32,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-25 19:37:32,794 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:37:32,795 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:37:32,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 19:37:32,795 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:37:32,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:37:32,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1772718543, now seen corresponding path program 1 times [2021-11-25 19:37:32,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:37:32,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854165997] [2021-11-25 19:37:32,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:37:32,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:37:32,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:37:32,850 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:37:32,850 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:37:32,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854165997] [2021-11-25 19:37:32,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854165997] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:37:32,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:37:32,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:37:32,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852541066] [2021-11-25 19:37:32,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:37:32,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:37:32,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:37:32,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:37:32,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:37:32,854 INFO L87 Difference]: Start difference. First operand 643 states and 1044 transitions. Second operand has 3 states, 3 states have (on average 30.0) 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) [2021-11-25 19:37:33,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:37:33,246 INFO L93 Difference]: Finished difference Result 1765 states and 2944 transitions. [2021-11-25 19:37:33,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:37:33,247 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) 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 107 [2021-11-25 19:37:33,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:37:33,255 INFO L225 Difference]: With dead ends: 1765 [2021-11-25 19:37:33,255 INFO L226 Difference]: Without dead ends: 1123 [2021-11-25 19:37:33,256 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:37:33,257 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 77 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:37:33,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 139 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 19:37:33,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2021-11-25 19:37:33,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 963. [2021-11-25 19:37:33,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 1.4802494802494803) internal successors, (1424), 962 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:37:33,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1424 transitions. [2021-11-25 19:37:33,291 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1424 transitions. Word has length 107 [2021-11-25 19:37:33,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:37:33,292 INFO L470 AbstractCegarLoop]: Abstraction has 963 states and 1424 transitions. [2021-11-25 19:37:33,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) 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) [2021-11-25 19:37:33,293 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1424 transitions. [2021-11-25 19:37:33,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-25 19:37:33,296 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:37:33,296 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:37:33,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 19:37:33,297 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:37:33,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:37:33,298 INFO L85 PathProgramCache]: Analyzing trace with hash -389212296, now seen corresponding path program 1 times [2021-11-25 19:37:33,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:37:33,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917281207] [2021-11-25 19:37:33,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:37:33,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:37:33,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:37:33,356 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:37:33,357 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:37:33,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917281207] [2021-11-25 19:37:33,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917281207] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:37:33,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:37:33,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:37:33,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738154634] [2021-11-25 19:37:33,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:37:33,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:37:33,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:37:33,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:37:33,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:37:33,360 INFO L87 Difference]: Start difference. First operand 963 states and 1424 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:37:33,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:37:33,693 INFO L93 Difference]: Finished difference Result 1765 states and 2657 transitions. [2021-11-25 19:37:33,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:37:33,694 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-25 19:37:33,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:37:33,699 INFO L225 Difference]: With dead ends: 1765 [2021-11-25 19:37:33,699 INFO L226 Difference]: Without dead ends: 803 [2021-11-25 19:37:33,700 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:37:33,702 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 66 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:37:33,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 158 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:37:33,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2021-11-25 19:37:33,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 723. [2021-11-25 19:37:33,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 722 states have (on average 1.4238227146814404) internal successors, (1028), 722 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:37:33,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1028 transitions. [2021-11-25 19:37:33,725 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1028 transitions. Word has length 115 [2021-11-25 19:37:33,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:37:33,725 INFO L470 AbstractCegarLoop]: Abstraction has 723 states and 1028 transitions. [2021-11-25 19:37:33,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:37:33,726 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1028 transitions. [2021-11-25 19:37:33,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-25 19:37:33,729 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:37:33,729 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-25 19:37:33,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 19:37:33,730 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:37:33,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:37:33,731 INFO L85 PathProgramCache]: Analyzing trace with hash 75128230, now seen corresponding path program 1 times [2021-11-25 19:37:33,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:37:33,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455752804] [2021-11-25 19:37:33,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:37:33,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:37:33,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:37:33,795 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-25 19:37:33,796 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:37:33,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455752804] [2021-11-25 19:37:33,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455752804] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:37:33,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:37:33,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:37:33,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799350334] [2021-11-25 19:37:33,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:37:33,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:37:33,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:37:33,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:37:33,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:37:33,799 INFO L87 Difference]: Start difference. First operand 723 states and 1028 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:37:34,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:37:34,157 INFO L93 Difference]: Finished difference Result 1923 states and 2759 transitions. [2021-11-25 19:37:34,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:37:34,157 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 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 166 [2021-11-25 19:37:34,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:37:34,158 INFO L225 Difference]: With dead ends: 1923 [2021-11-25 19:37:34,158 INFO L226 Difference]: Without dead ends: 0 [2021-11-25 19:37:34,160 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:37:34,161 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 102 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:37:34,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 36 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:37:34,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-25 19:37:34,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-25 19:37:34,162 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) [2021-11-25 19:37:34,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-25 19:37:34,162 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 166 [2021-11-25 19:37:34,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:37:34,162 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-25 19:37:34,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:37:34,163 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-25 19:37:34,163 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-25 19:37:34,165 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-25 19:37:34,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 19:37:34,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-25 19:37:34,347 INFO L858 garLoopResultBuilder]: For program point L301(lines 301 423) no Hoare annotation was computed. [2021-11-25 19:37:34,348 INFO L858 garLoopResultBuilder]: For program point L235(lines 235 423) no Hoare annotation was computed. [2021-11-25 19:37:34,348 INFO L858 garLoopResultBuilder]: For program point L169(lines 169 423) no Hoare annotation was computed. [2021-11-25 19:37:34,348 INFO L858 garLoopResultBuilder]: For program point L303(lines 303 423) no Hoare annotation was computed. [2021-11-25 19:37:34,348 INFO L858 garLoopResultBuilder]: For program point L105(lines 105 423) no Hoare annotation was computed. [2021-11-25 19:37:34,349 INFO L858 garLoopResultBuilder]: For program point L40(lines 40 423) no Hoare annotation was computed. [2021-11-25 19:37:34,349 INFO L858 garLoopResultBuilder]: For program point L371(lines 371 423) no Hoare annotation was computed. [2021-11-25 19:37:34,349 INFO L858 garLoopResultBuilder]: For program point L307(lines 307 423) no Hoare annotation was computed. [2021-11-25 19:37:34,349 INFO L858 garLoopResultBuilder]: For program point L175(lines 175 423) no Hoare annotation was computed. [2021-11-25 19:37:34,350 INFO L858 garLoopResultBuilder]: For program point L109(lines 109 423) no Hoare annotation was computed. [2021-11-25 19:37:34,350 INFO L858 garLoopResultBuilder]: For program point L242(lines 242 423) no Hoare annotation was computed. [2021-11-25 19:37:34,350 INFO L858 garLoopResultBuilder]: For program point L45(lines 45 423) no Hoare annotation was computed. [2021-11-25 19:37:34,350 INFO L858 garLoopResultBuilder]: For program point L244(lines 244 423) no Hoare annotation was computed. [2021-11-25 19:37:34,350 INFO L858 garLoopResultBuilder]: For program point L179(lines 179 423) no Hoare annotation was computed. [2021-11-25 19:37:34,350 INFO L858 garLoopResultBuilder]: For program point L378(lines 378 423) no Hoare annotation was computed. [2021-11-25 19:37:34,351 INFO L858 garLoopResultBuilder]: For program point L48(lines 48 423) no Hoare annotation was computed. [2021-11-25 19:37:34,351 INFO L858 garLoopResultBuilder]: For program point L247(lines 247 423) no Hoare annotation was computed. [2021-11-25 19:37:34,351 INFO L858 garLoopResultBuilder]: For program point L116(lines 116 423) no Hoare annotation was computed. [2021-11-25 19:37:34,351 INFO L858 garLoopResultBuilder]: For program point L52(lines 52 423) no Hoare annotation was computed. [2021-11-25 19:37:34,351 INFO L858 garLoopResultBuilder]: For program point L185(lines 185 423) no Hoare annotation was computed. [2021-11-25 19:37:34,351 INFO L858 garLoopResultBuilder]: For program point L385(lines 385 423) no Hoare annotation was computed. [2021-11-25 19:37:34,352 INFO L858 garLoopResultBuilder]: For program point L319(lines 319 423) no Hoare annotation was computed. [2021-11-25 19:37:34,352 INFO L858 garLoopResultBuilder]: For program point L189(lines 189 423) no Hoare annotation was computed. [2021-11-25 19:37:34,352 INFO L858 garLoopResultBuilder]: For program point L123(lines 123 423) no Hoare annotation was computed. [2021-11-25 19:37:34,352 INFO L858 garLoopResultBuilder]: For program point L57(lines 57 423) no Hoare annotation was computed. [2021-11-25 19:37:34,352 INFO L858 garLoopResultBuilder]: For program point L388(lines 388 423) no Hoare annotation was computed. [2021-11-25 19:37:34,353 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-25 19:37:34,354 INFO L858 garLoopResultBuilder]: For program point L390(lines 390 423) no Hoare annotation was computed. [2021-11-25 19:37:34,357 INFO L858 garLoopResultBuilder]: For program point L324(lines 324 423) no Hoare annotation was computed. [2021-11-25 19:37:34,358 INFO L858 garLoopResultBuilder]: For program point L258(lines 258 423) no Hoare annotation was computed. [2021-11-25 19:37:34,358 INFO L858 garLoopResultBuilder]: For program point L60(lines 60 423) no Hoare annotation was computed. [2021-11-25 19:37:34,358 INFO L858 garLoopResultBuilder]: For program point L195(lines 195 423) no Hoare annotation was computed. [2021-11-25 19:37:34,358 INFO L858 garLoopResultBuilder]: For program point L129(lines 129 423) no Hoare annotation was computed. [2021-11-25 19:37:34,358 INFO L858 garLoopResultBuilder]: For program point L64(lines 64 423) no Hoare annotation was computed. [2021-11-25 19:37:34,358 INFO L858 garLoopResultBuilder]: For program point L263(lines 263 423) no Hoare annotation was computed. [2021-11-25 19:37:34,359 INFO L858 garLoopResultBuilder]: For program point L197(lines 197 423) no Hoare annotation was computed. [2021-11-25 19:37:34,359 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 536) no Hoare annotation was computed. [2021-11-25 19:37:34,360 INFO L858 garLoopResultBuilder]: For program point L199(lines 199 423) no Hoare annotation was computed. [2021-11-25 19:37:34,360 INFO L858 garLoopResultBuilder]: For program point L133(lines 133 423) no Hoare annotation was computed. [2021-11-25 19:37:34,361 INFO L858 garLoopResultBuilder]: For program point L399(lines 399 423) no Hoare annotation was computed. [2021-11-25 19:37:34,361 INFO L858 garLoopResultBuilder]: For program point L201(lines 201 423) no Hoare annotation was computed. [2021-11-25 19:37:34,361 INFO L858 garLoopResultBuilder]: For program point L69(lines 69 423) no Hoare annotation was computed. [2021-11-25 19:37:34,361 INFO L858 garLoopResultBuilder]: For program point L532-1(lines 39 608) no Hoare annotation was computed. [2021-11-25 19:37:34,361 INFO L858 garLoopResultBuilder]: For program point L269(lines 269 423) no Hoare annotation was computed. [2021-11-25 19:37:34,361 INFO L858 garLoopResultBuilder]: For program point L204(lines 204 423) no Hoare annotation was computed. [2021-11-25 19:37:34,362 INFO L858 garLoopResultBuilder]: For program point L535-1(lines 39 608) no Hoare annotation was computed. [2021-11-25 19:37:34,362 INFO L858 garLoopResultBuilder]: For program point L271(lines 271 423) no Hoare annotation was computed. [2021-11-25 19:37:34,363 INFO L858 garLoopResultBuilder]: For program point L536(line 536) no Hoare annotation was computed. [2021-11-25 19:37:34,363 INFO L858 garLoopResultBuilder]: For program point L404(lines 404 423) no Hoare annotation was computed. [2021-11-25 19:37:34,363 INFO L858 garLoopResultBuilder]: For program point L338(lines 338 423) no Hoare annotation was computed. [2021-11-25 19:37:34,363 INFO L858 garLoopResultBuilder]: For program point L140(lines 140 423) no Hoare annotation was computed. [2021-11-25 19:37:34,364 INFO L858 garLoopResultBuilder]: For program point L75(lines 75 423) no Hoare annotation was computed. [2021-11-25 19:37:34,364 INFO L858 garLoopResultBuilder]: For program point L208(lines 208 423) no Hoare annotation was computed. [2021-11-25 19:37:34,364 INFO L858 garLoopResultBuilder]: For program point L341(lines 341 423) no Hoare annotation was computed. [2021-11-25 19:37:34,364 INFO L858 garLoopResultBuilder]: For program point L408(lines 408 423) no Hoare annotation was computed. [2021-11-25 19:37:34,364 INFO L858 garLoopResultBuilder]: For program point L144(lines 144 423) no Hoare annotation was computed. [2021-11-25 19:37:34,366 INFO L854 garLoopResultBuilder]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse0 (= ~a25~0 0))) (or (and (= ~a19~0 1) .cse0) (and (<= 8 ~a17~0) .cse0) (= ~a25~0 1) (and (<= 10 ~a28~0) .cse0) (and (= ~a11~0 0) .cse0))) [2021-11-25 19:37:34,366 INFO L858 garLoopResultBuilder]: For program point L79(lines 79 423) no Hoare annotation was computed. [2021-11-25 19:37:34,367 INFO L858 garLoopResultBuilder]: For program point L212(lines 212 423) no Hoare annotation was computed. [2021-11-25 19:37:34,367 INFO L861 garLoopResultBuilder]: At program point L610(lines 610 627) the Hoare annotation is: true [2021-11-25 19:37:34,367 INFO L858 garLoopResultBuilder]: For program point L412(lines 412 423) no Hoare annotation was computed. [2021-11-25 19:37:34,367 INFO L858 garLoopResultBuilder]: For program point L347(lines 347 423) no Hoare annotation was computed. [2021-11-25 19:37:34,367 INFO L858 garLoopResultBuilder]: For program point L149(lines 149 423) no Hoare annotation was computed. [2021-11-25 19:37:34,368 INFO L858 garLoopResultBuilder]: For program point L414(lines 414 423) no Hoare annotation was computed. [2021-11-25 19:37:34,369 INFO L858 garLoopResultBuilder]: For program point L84(lines 84 423) no Hoare annotation was computed. [2021-11-25 19:37:34,369 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-25 19:37:34,369 INFO L858 garLoopResultBuilder]: For program point L417(lines 417 423) no Hoare annotation was computed. [2021-11-25 19:37:34,370 INFO L858 garLoopResultBuilder]: For program point L153(lines 153 423) no Hoare annotation was computed. [2021-11-25 19:37:34,370 INFO L854 garLoopResultBuilder]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse0 (= ~a25~0 0))) (or (and (= ~a19~0 1) .cse0) (and (<= 8 ~a17~0) .cse0) (= ~a25~0 1) (and (<= 10 ~a28~0) .cse0) (and (= ~a11~0 0) .cse0))) [2021-11-25 19:37:34,370 INFO L858 garLoopResultBuilder]: For program point L286(lines 286 423) no Hoare annotation was computed. [2021-11-25 19:37:34,370 INFO L858 garLoopResultBuilder]: For program point L419(lines 419 423) no Hoare annotation was computed. [2021-11-25 19:37:34,370 INFO L858 garLoopResultBuilder]: For program point L222(lines 222 423) no Hoare annotation was computed. [2021-11-25 19:37:34,371 INFO L858 garLoopResultBuilder]: For program point L290(lines 290 423) no Hoare annotation was computed. [2021-11-25 19:37:34,371 INFO L858 garLoopResultBuilder]: For program point L158(lines 158 423) no Hoare annotation was computed. [2021-11-25 19:37:34,371 INFO L858 garLoopResultBuilder]: For program point L92(lines 92 423) no Hoare annotation was computed. [2021-11-25 19:37:34,371 INFO L858 garLoopResultBuilder]: For program point L621(line 621) no Hoare annotation was computed. [2021-11-25 19:37:34,371 INFO L858 garLoopResultBuilder]: For program point L225(lines 225 423) no Hoare annotation was computed. [2021-11-25 19:37:34,371 INFO L858 garLoopResultBuilder]: For program point L359(lines 359 423) no Hoare annotation was computed. [2021-11-25 19:37:34,372 INFO L858 garLoopResultBuilder]: For program point L293(lines 293 423) no Hoare annotation was computed. [2021-11-25 19:37:34,372 INFO L858 garLoopResultBuilder]: For program point L228(lines 228 423) no Hoare annotation was computed. [2021-11-25 19:37:34,373 INFO L858 garLoopResultBuilder]: For program point L296(lines 296 423) no Hoare annotation was computed. [2021-11-25 19:37:34,373 INFO L858 garLoopResultBuilder]: For program point L164(lines 164 423) no Hoare annotation was computed. [2021-11-25 19:37:34,373 INFO L858 garLoopResultBuilder]: For program point L364(lines 364 423) no Hoare annotation was computed. [2021-11-25 19:37:34,373 INFO L858 garLoopResultBuilder]: For program point L233(lines 233 423) no Hoare annotation was computed. [2021-11-25 19:37:34,373 INFO L858 garLoopResultBuilder]: For program point L101(lines 101 423) no Hoare annotation was computed. [2021-11-25 19:37:34,377 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:37:34,379 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 19:37:34,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 07:37:34 BoogieIcfgContainer [2021-11-25 19:37:34,408 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 19:37:34,409 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 19:37:34,409 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 19:37:34,410 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 19:37:34,410 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:37:29" (3/4) ... [2021-11-25 19:37:34,413 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-25 19:37:34,445 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 116 nodes and edges [2021-11-25 19:37:34,447 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2021-11-25 19:37:34,449 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-11-25 19:37:34,451 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-25 19:37:34,587 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8718c7d7-ed44-44a5-8f8a-4a39f96518c0/bin/utaipan-eEHZpOm5b7/witness.graphml [2021-11-25 19:37:34,587 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 19:37:34,588 INFO L158 Benchmark]: Toolchain (without parser) took 6738.72ms. Allocated memory was 83.9MB in the beginning and 159.4MB in the end (delta: 75.5MB). Free memory was 46.3MB in the beginning and 116.8MB in the end (delta: -70.6MB). Peak memory consumption was 65.6MB. Max. memory is 16.1GB. [2021-11-25 19:37:34,588 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 83.9MB. Free memory is still 64.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:37:34,589 INFO L158 Benchmark]: CACSL2BoogieTranslator took 629.21ms. Allocated memory is still 83.9MB. Free memory was 46.1MB in the beginning and 45.8MB in the end (delta: 265.0kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-25 19:37:34,589 INFO L158 Benchmark]: Boogie Procedure Inliner took 104.05ms. Allocated memory is still 83.9MB. Free memory was 45.8MB in the beginning and 40.1MB in the end (delta: 5.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-25 19:37:34,590 INFO L158 Benchmark]: Boogie Preprocessor took 116.08ms. Allocated memory is still 83.9MB. Free memory was 40.1MB in the beginning and 35.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-25 19:37:34,590 INFO L158 Benchmark]: RCFGBuilder took 1276.61ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 35.9MB in the beginning and 68.9MB in the end (delta: -33.0MB). Peak memory consumption was 22.4MB. Max. memory is 16.1GB. [2021-11-25 19:37:34,591 INFO L158 Benchmark]: TraceAbstraction took 4424.04ms. Allocated memory was 100.7MB in the beginning and 132.1MB in the end (delta: 31.5MB). Free memory was 68.3MB in the beginning and 32.5MB in the end (delta: 35.8MB). Peak memory consumption was 66.4MB. Max. memory is 16.1GB. [2021-11-25 19:37:34,591 INFO L158 Benchmark]: Witness Printer took 178.04ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 32.5MB in the beginning and 116.8MB in the end (delta: -84.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-25 19:37:34,593 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 83.9MB. Free memory is still 64.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 629.21ms. Allocated memory is still 83.9MB. Free memory was 46.1MB in the beginning and 45.8MB in the end (delta: 265.0kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 104.05ms. Allocated memory is still 83.9MB. Free memory was 45.8MB in the beginning and 40.1MB in the end (delta: 5.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 116.08ms. Allocated memory is still 83.9MB. Free memory was 40.1MB in the beginning and 35.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1276.61ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 35.9MB in the beginning and 68.9MB in the end (delta: -33.0MB). Peak memory consumption was 22.4MB. Max. memory is 16.1GB. * TraceAbstraction took 4424.04ms. Allocated memory was 100.7MB in the beginning and 132.1MB in the end (delta: 31.5MB). Free memory was 68.3MB in the beginning and 32.5MB in the end (delta: 35.8MB). Peak memory consumption was 66.4MB. Max. memory is 16.1GB. * Witness Printer took 178.04ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 32.5MB in the beginning and 116.8MB in the end (delta: -84.4MB). Peak memory consumption was 4.2MB. 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: 536]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.3s, OverallIterations: 7, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 575 SdHoareTripleChecker+Valid, 2.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 575 mSDsluCounter, 494 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 49 mSDsCounter, 430 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1750 IncrementalHoareTripleChecker+Invalid, 2180 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 430 mSolverCounterUnsat, 446 mSDtfsCounter, 1750 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=963occurred in iteration=5, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 402 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 35 NumberOfFragments, 65 HoareAnnotationTreeSize, 3 FomulaSimplifications, 288 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 182 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 759 NumberOfCodeBlocks, 759 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 752 ConstructedInterpolants, 0 QuantifiedInterpolants, 1078 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 224/224 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: 616]: Loop Invariant Derived loop invariant: ((((a19 == 1 && a25 == 0) || (8 <= a17 && a25 == 0)) || a25 == 1) || (10 <= a28 && a25 == 0)) || (a11 == 0 && a25 == 0) - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((a19 == 1 && a25 == 0) || (8 <= a17 && a25 == 0)) || a25 == 1) || (10 <= a28 && a25 == 0)) || (a11 == 0 && a25 == 0) RESULT: Ultimate proved your program to be correct! [2021-11-25 19:37:34,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8718c7d7-ed44-44a5-8f8a-4a39f96518c0/bin/utaipan-eEHZpOm5b7/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