./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label51.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6953dc02-d95e-4173-b5b5-759afdecf5d6/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6953dc02-d95e-4173-b5b5-759afdecf5d6/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6953dc02-d95e-4173-b5b5-759afdecf5d6/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6953dc02-d95e-4173-b5b5-759afdecf5d6/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label51.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6953dc02-d95e-4173-b5b5-759afdecf5d6/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6953dc02-d95e-4173-b5b5-759afdecf5d6/bin/utaipan-vmNK8stdcF --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 39ef6d062a4ff56ba1e3913ade729d3f60e638b9dea34b0ea6935ef8cddd75d2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:33:36,530 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:33:36,532 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:33:36,571 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:33:36,572 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:33:36,573 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:33:36,575 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:33:36,579 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:33:36,581 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:33:36,583 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:33:36,584 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:33:36,586 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:33:36,586 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:33:36,588 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:33:36,590 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:33:36,591 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:33:36,593 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:33:36,594 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:33:36,596 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:33:36,599 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:33:36,601 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:33:36,603 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:33:36,605 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:33:36,606 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:33:36,610 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:33:36,610 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:33:36,611 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:33:36,612 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:33:36,613 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:33:36,614 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:33:36,615 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:33:36,616 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:33:36,617 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:33:36,618 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:33:36,619 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:33:36,620 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:33:36,620 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:33:36,621 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:33:36,621 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:33:36,623 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:33:36,624 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:33:36,625 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6953dc02-d95e-4173-b5b5-759afdecf5d6/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-13 01:33:36,651 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:33:36,652 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:33:36,653 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:33:36,653 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:33:36,654 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:33:36,654 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:33:36,655 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:33:36,655 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 01:33:36,655 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:33:36,656 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:33:36,656 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 01:33:36,657 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 01:33:36,657 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:33:36,657 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 01:33:36,658 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 01:33:36,658 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 01:33:36,659 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:33:36,660 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 01:33:36,660 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 01:33:36,660 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 01:33:36,661 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:33:36,661 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:33:36,662 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:33:36,662 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:33:36,662 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:33:36,663 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 01:33:36,663 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:33:36,663 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:33:36,664 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:33:36,664 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:33:36,665 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:33:36,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:33:36,666 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:33:36,666 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:33:36,666 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:33:36,666 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 01:33:36,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 01:33:36,667 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:33:36,667 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:33:36,667 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:33:36,668 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_6953dc02-d95e-4173-b5b5-759afdecf5d6/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6953dc02-d95e-4173-b5b5-759afdecf5d6/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39ef6d062a4ff56ba1e3913ade729d3f60e638b9dea34b0ea6935ef8cddd75d2 [2021-11-13 01:33:36,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:33:36,978 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:33:36,981 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:33:36,983 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:33:36,984 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:33:36,985 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6953dc02-d95e-4173-b5b5-759afdecf5d6/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/eca-rers2012/Problem01_label51.c [2021-11-13 01:33:37,055 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6953dc02-d95e-4173-b5b5-759afdecf5d6/bin/utaipan-vmNK8stdcF/data/cb9e1f555/629d8bb0a7ef423e8c4c8805d7572d4f/FLAG31d181104 [2021-11-13 01:33:37,711 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:33:37,727 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6953dc02-d95e-4173-b5b5-759afdecf5d6/sv-benchmarks/c/eca-rers2012/Problem01_label51.c [2021-11-13 01:33:37,748 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6953dc02-d95e-4173-b5b5-759afdecf5d6/bin/utaipan-vmNK8stdcF/data/cb9e1f555/629d8bb0a7ef423e8c4c8805d7572d4f/FLAG31d181104 [2021-11-13 01:33:37,932 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6953dc02-d95e-4173-b5b5-759afdecf5d6/bin/utaipan-vmNK8stdcF/data/cb9e1f555/629d8bb0a7ef423e8c4c8805d7572d4f [2021-11-13 01:33:37,935 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:33:37,936 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:33:37,940 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:33:37,940 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:33:37,943 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:33:37,944 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:33:37" (1/1) ... [2021-11-13 01:33:37,947 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5199fb99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:33:37, skipping insertion in model container [2021-11-13 01:33:37,947 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:33:37" (1/1) ... [2021-11-13 01:33:37,956 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:33:38,018 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:33:38,497 WARN L228 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_6953dc02-d95e-4173-b5b5-759afdecf5d6/sv-benchmarks/c/eca-rers2012/Problem01_label51.c[18730,18743] [2021-11-13 01:33:38,517 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:33:38,526 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 01:33:38,594 WARN L228 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_6953dc02-d95e-4173-b5b5-759afdecf5d6/sv-benchmarks/c/eca-rers2012/Problem01_label51.c[18730,18743] [2021-11-13 01:33:38,605 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:33:38,620 INFO L208 MainTranslator]: Completed translation [2021-11-13 01:33:38,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:33:38 WrapperNode [2021-11-13 01:33:38,621 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:33:38,622 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 01:33:38,622 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 01:33:38,622 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 01:33:38,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:33:38" (1/1) ... [2021-11-13 01:33:38,660 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:33:38" (1/1) ... [2021-11-13 01:33:38,730 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 01:33:38,731 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 01:33:38,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 01:33:38,732 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 01:33:38,741 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:33:38" (1/1) ... [2021-11-13 01:33:38,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:33:38" (1/1) ... [2021-11-13 01:33:38,747 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:33:38" (1/1) ... [2021-11-13 01:33:38,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:33:38" (1/1) ... [2021-11-13 01:33:38,801 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:33:38" (1/1) ... [2021-11-13 01:33:38,811 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:33:38" (1/1) ... [2021-11-13 01:33:38,817 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:33:38" (1/1) ... [2021-11-13 01:33:38,831 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 01:33:38,832 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 01:33:38,832 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 01:33:38,832 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 01:33:38,835 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:33:38" (1/1) ... [2021-11-13 01:33:38,843 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:33:38,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6953dc02-d95e-4173-b5b5-759afdecf5d6/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:33:38,877 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6953dc02-d95e-4173-b5b5-759afdecf5d6/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 01:33:38,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6953dc02-d95e-4173-b5b5-759afdecf5d6/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 01:33:38,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 01:33:38,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 01:33:38,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 01:33:38,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 01:33:40,280 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 01:33:40,280 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-13 01:33:40,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:33:40 BoogieIcfgContainer [2021-11-13 01:33:40,283 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 01:33:40,287 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 01:33:40,287 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 01:33:40,291 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 01:33:40,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:33:37" (1/3) ... [2021-11-13 01:33:40,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a5eca7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:33:40, skipping insertion in model container [2021-11-13 01:33:40,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:33:38" (2/3) ... [2021-11-13 01:33:40,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a5eca7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:33:40, skipping insertion in model container [2021-11-13 01:33:40,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:33:40" (3/3) ... [2021-11-13 01:33:40,298 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label51.c [2021-11-13 01:33:40,307 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 01:33:40,307 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 01:33:40,374 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 01:33:40,386 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 [2021-11-13 01:33:40,386 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 01:33:40,407 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:33:40,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-13 01:33:40,425 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:33:40,426 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] [2021-11-13 01:33:40,426 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:33:40,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:33:40,432 INFO L85 PathProgramCache]: Analyzing trace with hash 379023495, now seen corresponding path program 1 times [2021-11-13 01:33:40,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:33:40,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123262611] [2021-11-13 01:33:40,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:33:40,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:33:40,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:40,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:33:40,862 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:33:40,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123262611] [2021-11-13 01:33:40,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123262611] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:33:40,863 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:33:40,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 01:33:40,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208712564] [2021-11-13 01:33:40,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:33:40,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:33:40,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:33:40,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:33:40,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:33:40,919 INFO L87 Difference]: Start difference. First operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:33:41,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:33:41,425 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2021-11-13 01:33:41,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:33:41,429 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-13 01:33:41,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:33:41,455 INFO L225 Difference]: With dead ends: 224 [2021-11-13 01:33:41,455 INFO L226 Difference]: Without dead ends: 145 [2021-11-13 01:33:41,459 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 [2021-11-13 01:33:41,464 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 26 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 325.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.31ms SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 408.92ms IncrementalHoareTripleChecker+Time [2021-11-13 01:33:41,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 29 Invalid, 274 Unknown, 0 Unchecked, 9.31ms Time], IncrementalHoareTripleChecker [48 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 408.92ms Time] [2021-11-13 01:33:41,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-11-13 01:33:41,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-11-13 01:33:41,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.7986111111111112) internal successors, (259), 144 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:33:41,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 259 transitions. [2021-11-13 01:33:41,517 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 259 transitions. Word has length 71 [2021-11-13 01:33:41,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:33:41,518 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 259 transitions. [2021-11-13 01:33:41,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:33:41,519 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 259 transitions. [2021-11-13 01:33:41,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-13 01:33:41,523 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:33:41,523 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-13 01:33:41,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 01:33:41,524 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:33:41,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:33:41,525 INFO L85 PathProgramCache]: Analyzing trace with hash -615338214, now seen corresponding path program 1 times [2021-11-13 01:33:41,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:33:41,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560639762] [2021-11-13 01:33:41,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:33:41,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:33:41,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:41,585 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:33:41,585 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:33:41,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560639762] [2021-11-13 01:33:41,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560639762] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:33:41,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:33:41,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 01:33:41,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6733976] [2021-11-13 01:33:41,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:33:41,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:33:41,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:33:41,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:33:41,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:33:41,590 INFO L87 Difference]: Start difference. First operand 145 states and 259 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:33:41,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:33:41,984 INFO L93 Difference]: Finished difference Result 431 states and 774 transitions. [2021-11-13 01:33:41,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:33:41,984 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2021-11-13 01:33:41,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:33:41,988 INFO L225 Difference]: With dead ends: 431 [2021-11-13 01:33:41,988 INFO L226 Difference]: Without dead ends: 287 [2021-11-13 01:33:41,989 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 [2021-11-13 01:33:41,991 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 82 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 278.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.75ms SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 353.77ms IncrementalHoareTripleChecker+Time [2021-11-13 01:33:41,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 32 Invalid, 281 Unknown, 0 Unchecked, 7.75ms Time], IncrementalHoareTripleChecker [71 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 353.77ms Time] [2021-11-13 01:33:41,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-11-13 01:33:42,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2021-11-13 01:33:42,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.6363636363636365) internal successors, (468), 286 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:33:42,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 468 transitions. [2021-11-13 01:33:42,016 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 468 transitions. Word has length 77 [2021-11-13 01:33:42,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:33:42,017 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 468 transitions. [2021-11-13 01:33:42,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:33:42,017 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 468 transitions. [2021-11-13 01:33:42,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-13 01:33:42,022 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:33:42,022 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-13 01:33:42,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 01:33:42,023 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:33:42,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:33:42,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1583655814, now seen corresponding path program 1 times [2021-11-13 01:33:42,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:33:42,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846662443] [2021-11-13 01:33:42,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:33:42,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:33:42,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:42,302 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:33:42,303 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:33:42,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846662443] [2021-11-13 01:33:42,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846662443] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:33:42,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:33:42,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 01:33:42,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784373904] [2021-11-13 01:33:42,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:33:42,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:33:42,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:33:42,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:33:42,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:33:42,308 INFO L87 Difference]: Start difference. First operand 287 states and 468 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:33:42,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:33:42,835 INFO L93 Difference]: Finished difference Result 784 states and 1255 transitions. [2021-11-13 01:33:42,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:33:42,835 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2021-11-13 01:33:42,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:33:42,839 INFO L225 Difference]: With dead ends: 784 [2021-11-13 01:33:42,839 INFO L226 Difference]: Without dead ends: 429 [2021-11-13 01:33:42,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:33:42,843 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 70 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 394.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.18ms SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 477.84ms IncrementalHoareTripleChecker+Time [2021-11-13 01:33:42,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 75 Invalid, 430 Unknown, 0 Unchecked, 5.18ms Time], IncrementalHoareTripleChecker [106 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 477.84ms Time] [2021-11-13 01:33:42,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-11-13 01:33:42,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 358. [2021-11-13 01:33:42,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 1.350140056022409) internal successors, (482), 357 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:33:42,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 482 transitions. [2021-11-13 01:33:42,867 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 482 transitions. Word has length 78 [2021-11-13 01:33:42,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:33:42,868 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 482 transitions. [2021-11-13 01:33:42,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:33:42,868 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 482 transitions. [2021-11-13 01:33:42,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-13 01:33:42,871 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:33:42,871 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-13 01:33:42,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 01:33:42,872 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:33:42,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:33:42,872 INFO L85 PathProgramCache]: Analyzing trace with hash -2090520904, now seen corresponding path program 1 times [2021-11-13 01:33:42,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:33:42,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588729807] [2021-11-13 01:33:42,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:33:42,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:33:42,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:42,930 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-13 01:33:42,930 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:33:42,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588729807] [2021-11-13 01:33:42,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588729807] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:33:42,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:33:42,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 01:33:42,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335841613] [2021-11-13 01:33:42,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:33:42,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:33:42,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:33:42,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:33:42,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:33:42,933 INFO L87 Difference]: Start difference. First operand 358 states and 482 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:33:43,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:33:43,192 INFO L93 Difference]: Finished difference Result 786 states and 1062 transitions. [2021-11-13 01:33:43,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:33:43,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-13 01:33:43,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:33:43,199 INFO L225 Difference]: With dead ends: 786 [2021-11-13 01:33:43,199 INFO L226 Difference]: Without dead ends: 429 [2021-11-13 01:33:43,200 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 [2021-11-13 01:33:43,202 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 64 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 191.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.08ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 238.14ms IncrementalHoareTripleChecker+Time [2021-11-13 01:33:43,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 43 Invalid, 212 Unknown, 0 Unchecked, 2.08ms Time], IncrementalHoareTripleChecker [32 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 238.14ms Time] [2021-11-13 01:33:43,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-11-13 01:33:43,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2021-11-13 01:33:43,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 428 states have (on average 1.3200934579439252) internal successors, (565), 428 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:33:43,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 565 transitions. [2021-11-13 01:33:43,257 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 565 transitions. Word has length 86 [2021-11-13 01:33:43,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:33:43,258 INFO L470 AbstractCegarLoop]: Abstraction has 429 states and 565 transitions. [2021-11-13 01:33:43,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:33:43,259 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 565 transitions. [2021-11-13 01:33:43,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-13 01:33:43,268 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:33:43,268 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:33:43,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 01:33:43,270 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:33:43,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:33:43,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1999069766, now seen corresponding path program 1 times [2021-11-13 01:33:43,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:33:43,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541956740] [2021-11-13 01:33:43,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:33:43,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:33:43,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:43,364 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-13 01:33:43,364 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:33:43,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541956740] [2021-11-13 01:33:43,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541956740] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:33:43,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:33:43,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 01:33:43,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397564336] [2021-11-13 01:33:43,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:33:43,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:33:43,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:33:43,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:33:43,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:33:43,370 INFO L87 Difference]: Start difference. First operand 429 states and 565 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 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) [2021-11-13 01:33:43,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:33:43,692 INFO L93 Difference]: Finished difference Result 1212 states and 1574 transitions. [2021-11-13 01:33:43,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:33:43,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 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 95 [2021-11-13 01:33:43,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:33:43,696 INFO L225 Difference]: With dead ends: 1212 [2021-11-13 01:33:43,696 INFO L226 Difference]: Without dead ends: 784 [2021-11-13 01:33:43,697 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 [2021-11-13 01:33:43,698 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 74 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 228.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.03ms SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 283.96ms IncrementalHoareTripleChecker+Time [2021-11-13 01:33:43,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 15 Invalid, 248 Unknown, 0 Unchecked, 2.03ms Time], IncrementalHoareTripleChecker [51 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 283.96ms Time] [2021-11-13 01:33:43,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2021-11-13 01:33:43,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 571. [2021-11-13 01:33:43,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 570 states have (on average 1.305263157894737) internal successors, (744), 570 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:33:43,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 744 transitions. [2021-11-13 01:33:43,721 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 744 transitions. Word has length 95 [2021-11-13 01:33:43,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:33:43,721 INFO L470 AbstractCegarLoop]: Abstraction has 571 states and 744 transitions. [2021-11-13 01:33:43,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 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) [2021-11-13 01:33:43,722 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 744 transitions. [2021-11-13 01:33:43,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-13 01:33:43,724 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:33:43,724 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-13 01:33:43,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 01:33:43,725 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:33:43,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:33:43,725 INFO L85 PathProgramCache]: Analyzing trace with hash 812559337, now seen corresponding path program 1 times [2021-11-13 01:33:43,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:33:43,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126985729] [2021-11-13 01:33:43,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:33:43,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:33:43,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:43,791 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-13 01:33:43,791 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:33:43,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126985729] [2021-11-13 01:33:43,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126985729] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:33:43,793 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:33:43,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 01:33:43,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031989950] [2021-11-13 01:33:43,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:33:43,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:33:43,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:33:43,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:33:43,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:33:43,795 INFO L87 Difference]: Start difference. First operand 571 states and 744 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:33:44,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:33:44,203 INFO L93 Difference]: Finished difference Result 1283 states and 1708 transitions. [2021-11-13 01:33:44,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:33:44,203 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 101 [2021-11-13 01:33:44,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:33:44,208 INFO L225 Difference]: With dead ends: 1283 [2021-11-13 01:33:44,208 INFO L226 Difference]: Without dead ends: 713 [2021-11-13 01:33:44,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:33:44,210 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 202 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 302.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.75ms SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 372.44ms IncrementalHoareTripleChecker+Time [2021-11-13 01:33:44,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [202 Valid, 30 Invalid, 383 Unknown, 0 Unchecked, 2.75ms Time], IncrementalHoareTripleChecker [109 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 372.44ms Time] [2021-11-13 01:33:44,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2021-11-13 01:33:44,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 713. [2021-11-13 01:33:44,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 712 states have (on average 1.2879213483146068) internal successors, (917), 712 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:33:44,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 917 transitions. [2021-11-13 01:33:44,233 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 917 transitions. Word has length 101 [2021-11-13 01:33:44,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:33:44,234 INFO L470 AbstractCegarLoop]: Abstraction has 713 states and 917 transitions. [2021-11-13 01:33:44,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:33:44,234 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 917 transitions. [2021-11-13 01:33:44,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-13 01:33:44,237 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:33:44,237 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:33:44,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 01:33:44,238 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:33:44,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:33:44,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1324202924, now seen corresponding path program 1 times [2021-11-13 01:33:44,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:33:44,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519208565] [2021-11-13 01:33:44,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:33:44,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:33:44,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:44,340 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-13 01:33:44,340 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:33:44,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519208565] [2021-11-13 01:33:44,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519208565] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:33:44,341 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:33:44,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 01:33:44,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954566215] [2021-11-13 01:33:44,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:33:44,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:33:44,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:33:44,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:33:44,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:33:44,345 INFO L87 Difference]: Start difference. First operand 713 states and 917 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:33:44,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:33:44,793 INFO L93 Difference]: Finished difference Result 1709 states and 2197 transitions. [2021-11-13 01:33:44,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:33:44,793 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 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 [2021-11-13 01:33:44,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:33:44,800 INFO L225 Difference]: With dead ends: 1709 [2021-11-13 01:33:44,800 INFO L226 Difference]: Without dead ends: 997 [2021-11-13 01:33:44,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:33:44,803 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 141 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 330.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.10ms SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 405.05ms IncrementalHoareTripleChecker+Time [2021-11-13 01:33:44,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 43 Invalid, 452 Unknown, 0 Unchecked, 3.10ms Time], IncrementalHoareTripleChecker [56 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 405.05ms Time] [2021-11-13 01:33:44,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2021-11-13 01:33:44,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 926. [2021-11-13 01:33:44,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 925 states have (on average 1.2627027027027027) internal successors, (1168), 925 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:33:44,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1168 transitions. [2021-11-13 01:33:44,832 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1168 transitions. Word has length 115 [2021-11-13 01:33:44,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:33:44,833 INFO L470 AbstractCegarLoop]: Abstraction has 926 states and 1168 transitions. [2021-11-13 01:33:44,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:33:44,833 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1168 transitions. [2021-11-13 01:33:44,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-13 01:33:44,836 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:33:44,836 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:33:44,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-13 01:33:44,836 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:33:44,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:33:44,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1736607012, now seen corresponding path program 1 times [2021-11-13 01:33:44,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:33:44,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634138842] [2021-11-13 01:33:44,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:33:44,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:33:44,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:44,914 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:33:44,915 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:33:44,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634138842] [2021-11-13 01:33:44,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634138842] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:33:44,915 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:33:44,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 01:33:44,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091716858] [2021-11-13 01:33:44,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:33:44,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:33:44,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:33:44,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:33:44,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:33:44,918 INFO L87 Difference]: Start difference. First operand 926 states and 1168 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:33:45,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:33:45,365 INFO L93 Difference]: Finished difference Result 2064 states and 2592 transitions. [2021-11-13 01:33:45,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:33:45,366 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 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 134 [2021-11-13 01:33:45,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:33:45,373 INFO L225 Difference]: With dead ends: 2064 [2021-11-13 01:33:45,373 INFO L226 Difference]: Without dead ends: 1139 [2021-11-13 01:33:45,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:33:45,376 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 102 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 334.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.86ms SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 409.66ms IncrementalHoareTripleChecker+Time [2021-11-13 01:33:45,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 25 Invalid, 467 Unknown, 0 Unchecked, 2.86ms Time], IncrementalHoareTripleChecker [106 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 409.66ms Time] [2021-11-13 01:33:45,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2021-11-13 01:33:45,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 855. [2021-11-13 01:33:45,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 854 states have (on average 1.2084309133489461) internal successors, (1032), 854 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:33:45,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1032 transitions. [2021-11-13 01:33:45,423 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1032 transitions. Word has length 134 [2021-11-13 01:33:45,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:33:45,424 INFO L470 AbstractCegarLoop]: Abstraction has 855 states and 1032 transitions. [2021-11-13 01:33:45,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:33:45,424 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1032 transitions. [2021-11-13 01:33:45,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-13 01:33:45,428 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:33:45,428 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:33:45,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-13 01:33:45,428 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:33:45,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:33:45,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1971821860, now seen corresponding path program 1 times [2021-11-13 01:33:45,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:33:45,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367680061] [2021-11-13 01:33:45,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:33:45,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:33:45,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:45,512 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-13 01:33:45,512 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:33:45,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367680061] [2021-11-13 01:33:45,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367680061] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:33:45,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:33:45,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 01:33:45,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928019760] [2021-11-13 01:33:45,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:33:45,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:33:45,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:33:45,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:33:45,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:33:45,515 INFO L87 Difference]: Start difference. First operand 855 states and 1032 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:33:45,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:33:45,791 INFO L93 Difference]: Finished difference Result 1922 states and 2320 transitions. [2021-11-13 01:33:45,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:33:45,792 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 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 177 [2021-11-13 01:33:45,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:33:45,798 INFO L225 Difference]: With dead ends: 1922 [2021-11-13 01:33:45,798 INFO L226 Difference]: Without dead ends: 1068 [2021-11-13 01:33:45,800 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 [2021-11-13 01:33:45,801 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 26 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 205.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.78ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 250.52ms IncrementalHoareTripleChecker+Time [2021-11-13 01:33:45,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 113 Invalid, 240 Unknown, 0 Unchecked, 1.78ms Time], IncrementalHoareTripleChecker [32 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 250.52ms Time] [2021-11-13 01:33:45,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2021-11-13 01:33:45,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 997. [2021-11-13 01:33:45,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 996 states have (on average 1.1927710843373494) internal successors, (1188), 996 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:33:45,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1188 transitions. [2021-11-13 01:33:45,828 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1188 transitions. Word has length 177 [2021-11-13 01:33:45,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:33:45,828 INFO L470 AbstractCegarLoop]: Abstraction has 997 states and 1188 transitions. [2021-11-13 01:33:45,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:33:45,829 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1188 transitions. [2021-11-13 01:33:45,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-11-13 01:33:45,832 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:33:45,832 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:33:45,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-13 01:33:45,833 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:33:45,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:33:45,833 INFO L85 PathProgramCache]: Analyzing trace with hash 10517947, now seen corresponding path program 1 times [2021-11-13 01:33:45,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:33:45,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568057602] [2021-11-13 01:33:45,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:33:45,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:33:45,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:46,018 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 126 proven. 69 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-13 01:33:46,019 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:33:46,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568057602] [2021-11-13 01:33:46,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568057602] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 01:33:46,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427610582] [2021-11-13 01:33:46,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:33:46,020 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:33:46,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6953dc02-d95e-4173-b5b5-759afdecf5d6/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:33:46,022 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6953dc02-d95e-4173-b5b5-759afdecf5d6/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 01:33:46,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6953dc02-d95e-4173-b5b5-759afdecf5d6/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 01:33:46,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:46,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:33:46,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:33:46,722 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-11-13 01:33:46,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:33:47,021 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-11-13 01:33:47,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427610582] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:33:47,022 INFO L186 FreeRefinementEngine]: Found 2 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:33:47,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2021-11-13 01:33:47,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784291664] [2021-11-13 01:33:47,023 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:33:47,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:33:47,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:33:47,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:33:47,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:33:47,024 INFO L87 Difference]: Start difference. First operand 997 states and 1188 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:33:47,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:33:47,332 INFO L93 Difference]: Finished difference Result 2277 states and 2696 transitions. [2021-11-13 01:33:47,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:33:47,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 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 199 [2021-11-13 01:33:47,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:33:47,340 INFO L225 Difference]: With dead ends: 2277 [2021-11-13 01:33:47,340 INFO L226 Difference]: Without dead ends: 1210 [2021-11-13 01:33:47,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 396 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:33:47,343 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 230.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.92ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 279.46ms IncrementalHoareTripleChecker+Time [2021-11-13 01:33:47,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 117 Invalid, 248 Unknown, 0 Unchecked, 1.92ms Time], IncrementalHoareTripleChecker [38 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 279.46ms Time] [2021-11-13 01:33:47,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2021-11-13 01:33:47,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1139. [2021-11-13 01:33:47,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1138 states have (on average 1.149384885764499) internal successors, (1308), 1138 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:33:47,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1308 transitions. [2021-11-13 01:33:47,376 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1308 transitions. Word has length 199 [2021-11-13 01:33:47,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:33:47,376 INFO L470 AbstractCegarLoop]: Abstraction has 1139 states and 1308 transitions. [2021-11-13 01:33:47,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:33:47,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1308 transitions. [2021-11-13 01:33:47,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-11-13 01:33:47,381 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:33:47,381 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:33:47,420 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6953dc02-d95e-4173-b5b5-759afdecf5d6/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-13 01:33:47,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6953dc02-d95e-4173-b5b5-759afdecf5d6/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-13 01:33:47,608 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:33:47,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:33:47,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1502816078, now seen corresponding path program 1 times [2021-11-13 01:33:47,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:33:47,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448426477] [2021-11-13 01:33:47,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:33:47,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:33:47,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:47,835 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 143 proven. 86 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-11-13 01:33:47,835 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:33:47,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448426477] [2021-11-13 01:33:47,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448426477] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 01:33:47,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226034819] [2021-11-13 01:33:47,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:33:47,836 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:33:47,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6953dc02-d95e-4173-b5b5-759afdecf5d6/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:33:47,839 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6953dc02-d95e-4173-b5b5-759afdecf5d6/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 01:33:47,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6953dc02-d95e-4173-b5b5-759afdecf5d6/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-13 01:33:47,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:47,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:33:47,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:33:48,331 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2021-11-13 01:33:48,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:33:48,637 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2021-11-13 01:33:48,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226034819] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:33:48,638 INFO L186 FreeRefinementEngine]: Found 2 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:33:48,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2021-11-13 01:33:48,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131526146] [2021-11-13 01:33:48,639 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:33:48,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:33:48,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:33:48,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:33:48,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:33:48,641 INFO L87 Difference]: Start difference. First operand 1139 states and 1308 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:33:48,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:33:48,934 INFO L93 Difference]: Finished difference Result 2417 states and 2781 transitions. [2021-11-13 01:33:48,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:33:48,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 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 216 [2021-11-13 01:33:48,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:33:48,936 INFO L225 Difference]: With dead ends: 2417 [2021-11-13 01:33:48,936 INFO L226 Difference]: Without dead ends: 0 [2021-11-13 01:33:48,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 431 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:33:48,939 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 11 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 221.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.57ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 268.01ms IncrementalHoareTripleChecker+Time [2021-11-13 01:33:48,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 102 Invalid, 219 Unknown, 0 Unchecked, 1.57ms Time], IncrementalHoareTripleChecker [23 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 268.01ms Time] [2021-11-13 01:33:48,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-13 01:33:48,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-13 01:33:48,941 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) [2021-11-13 01:33:48,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-13 01:33:48,941 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 216 [2021-11-13 01:33:48,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:33:48,942 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-13 01:33:48,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:33:48,942 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-13 01:33:48,943 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-13 01:33:48,945 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-13 01:33:48,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6953dc02-d95e-4173-b5b5-759afdecf5d6/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-13 01:33:49,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6953dc02-d95e-4173-b5b5-759afdecf5d6/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-13 01:33:49,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-13 01:33:49,831 INFO L858 garLoopResultBuilder]: For program point L102(lines 102 400) no Hoare annotation was computed. [2021-11-13 01:33:49,831 INFO L858 garLoopResultBuilder]: For program point L598(line 598) no Hoare annotation was computed. [2021-11-13 01:33:49,832 INFO L858 garLoopResultBuilder]: For program point L334(lines 334 400) no Hoare annotation was computed. [2021-11-13 01:33:49,832 INFO L858 garLoopResultBuilder]: For program point L500-1(lines 40 585) no Hoare annotation was computed. [2021-11-13 01:33:49,832 INFO L858 garLoopResultBuilder]: For program point L302(lines 302 400) no Hoare annotation was computed. [2021-11-13 01:33:49,832 INFO L858 garLoopResultBuilder]: For program point L170(lines 170 400) no Hoare annotation was computed. [2021-11-13 01:33:49,832 INFO L858 garLoopResultBuilder]: For program point L204(lines 204 400) no Hoare annotation was computed. [2021-11-13 01:33:49,832 INFO L858 garLoopResultBuilder]: For program point L72(lines 72 400) no Hoare annotation was computed. [2021-11-13 01:33:49,832 INFO L858 garLoopResultBuilder]: For program point L271(lines 271 400) no Hoare annotation was computed. [2021-11-13 01:33:49,832 INFO L858 garLoopResultBuilder]: For program point L139(lines 139 400) no Hoare annotation was computed. [2021-11-13 01:33:49,832 INFO L858 garLoopResultBuilder]: For program point L503-1(lines 40 585) no Hoare annotation was computed. [2021-11-13 01:33:49,832 INFO L858 garLoopResultBuilder]: For program point L371(lines 371 400) no Hoare annotation was computed. [2021-11-13 01:33:49,833 INFO L858 garLoopResultBuilder]: For program point L107(lines 107 400) no Hoare annotation was computed. [2021-11-13 01:33:49,833 INFO L858 garLoopResultBuilder]: For program point L41(lines 41 400) no Hoare annotation was computed. [2021-11-13 01:33:49,833 INFO L858 garLoopResultBuilder]: For program point L504(line 504) no Hoare annotation was computed. [2021-11-13 01:33:49,833 INFO L858 garLoopResultBuilder]: For program point L339(lines 339 400) no Hoare annotation was computed. [2021-11-13 01:33:49,833 INFO L858 garLoopResultBuilder]: For program point L207(lines 207 400) no Hoare annotation was computed. [2021-11-13 01:33:49,833 INFO L858 garLoopResultBuilder]: For program point L75(lines 75 400) no Hoare annotation was computed. [2021-11-13 01:33:49,833 INFO L858 garLoopResultBuilder]: For program point L373(lines 373 400) no Hoare annotation was computed. [2021-11-13 01:33:49,833 INFO L858 garLoopResultBuilder]: For program point L241(lines 241 400) no Hoare annotation was computed. [2021-11-13 01:33:49,833 INFO L858 garLoopResultBuilder]: For program point L175(lines 175 400) no Hoare annotation was computed. [2021-11-13 01:33:49,833 INFO L858 garLoopResultBuilder]: For program point L275(lines 275 400) no Hoare annotation was computed. [2021-11-13 01:33:49,834 INFO L858 garLoopResultBuilder]: For program point L375(lines 375 400) no Hoare annotation was computed. [2021-11-13 01:33:49,834 INFO L858 garLoopResultBuilder]: For program point L309(lines 309 400) no Hoare annotation was computed. [2021-11-13 01:33:49,834 INFO L858 garLoopResultBuilder]: For program point L45(lines 45 400) no Hoare annotation was computed. [2021-11-13 01:33:49,834 INFO L858 garLoopResultBuilder]: For program point L343(lines 343 400) no Hoare annotation was computed. [2021-11-13 01:33:49,834 INFO L858 garLoopResultBuilder]: For program point L112(lines 112 400) no Hoare annotation was computed. [2021-11-13 01:33:49,834 INFO L858 garLoopResultBuilder]: For program point L278(lines 278 400) no Hoare annotation was computed. [2021-11-13 01:33:49,834 INFO L858 garLoopResultBuilder]: For program point L146(lines 146 400) no Hoare annotation was computed. [2021-11-13 01:33:49,834 INFO L858 garLoopResultBuilder]: For program point L213(lines 213 400) no Hoare annotation was computed. [2021-11-13 01:33:49,834 INFO L858 garLoopResultBuilder]: For program point L82(lines 82 400) no Hoare annotation was computed. [2021-11-13 01:33:49,834 INFO L858 garLoopResultBuilder]: For program point L347(lines 347 400) no Hoare annotation was computed. [2021-11-13 01:33:49,835 INFO L858 garLoopResultBuilder]: For program point L248(lines 248 400) no Hoare annotation was computed. [2021-11-13 01:33:49,835 INFO L858 garLoopResultBuilder]: For program point L183(lines 183 400) no Hoare annotation was computed. [2021-11-13 01:33:49,835 INFO L858 garLoopResultBuilder]: For program point L150(lines 150 400) no Hoare annotation was computed. [2021-11-13 01:33:49,835 INFO L858 garLoopResultBuilder]: For program point L382(lines 382 400) no Hoare annotation was computed. [2021-11-13 01:33:49,835 INFO L858 garLoopResultBuilder]: For program point L316(lines 316 400) no Hoare annotation was computed. [2021-11-13 01:33:49,835 INFO L858 garLoopResultBuilder]: For program point L283(lines 283 400) no Hoare annotation was computed. [2021-11-13 01:33:49,835 INFO L858 garLoopResultBuilder]: For program point L118(lines 118 400) no Hoare annotation was computed. [2021-11-13 01:33:49,835 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-13 01:33:49,835 INFO L858 garLoopResultBuilder]: For program point L218(lines 218 400) no Hoare annotation was computed. [2021-11-13 01:33:49,835 INFO L858 garLoopResultBuilder]: For program point L53(lines 53 400) no Hoare annotation was computed. [2021-11-13 01:33:49,836 INFO L858 garLoopResultBuilder]: For program point L154(lines 154 400) no Hoare annotation was computed. [2021-11-13 01:33:49,836 INFO L854 garLoopResultBuilder]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse3 (= ~a16~0 6)) (.cse5 (<= 15 ~a8~0)) (.cse1 (= ~a17~0 1)) (.cse4 (= ~a7~0 1)) (.cse7 (<= ~a16~0 4)) (.cse2 (= ~a20~0 1)) (.cse0 (= ~a21~0 1)) (.cse6 (<= ~a16~0 5))) (or (and (= ~a12~0 8) .cse0 .cse1 .cse2) (and .cse3 .cse4 .cse2) (and .cse0 .cse2 .cse5) (and .cse3 .cse0 .cse5) (and .cse0 .cse4 .cse6) (and .cse0 .cse7) (and .cse4 .cse7 .cse2) (and .cse1 .cse4 .cse6 .cse2) (and .cse1 .cse4 .cse7) (and (not .cse2) .cse0 .cse6))) [2021-11-13 01:33:49,836 INFO L858 garLoopResultBuilder]: For program point L188(lines 188 400) no Hoare annotation was computed. [2021-11-13 01:33:49,836 INFO L858 garLoopResultBuilder]: For program point L387(lines 387 400) no Hoare annotation was computed. [2021-11-13 01:33:49,836 INFO L858 garLoopResultBuilder]: For program point L288(lines 288 400) no Hoare annotation was computed. [2021-11-13 01:33:49,836 INFO L858 garLoopResultBuilder]: For program point L255(lines 255 400) no Hoare annotation was computed. [2021-11-13 01:33:49,836 INFO L858 garLoopResultBuilder]: For program point L90(lines 90 400) no Hoare annotation was computed. [2021-11-13 01:33:49,837 INFO L858 garLoopResultBuilder]: For program point L355(lines 355 400) no Hoare annotation was computed. [2021-11-13 01:33:49,837 INFO L858 garLoopResultBuilder]: For program point L322(lines 322 400) no Hoare annotation was computed. [2021-11-13 01:33:49,837 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-13 01:33:49,837 INFO L858 garLoopResultBuilder]: For program point L124(lines 124 400) no Hoare annotation was computed. [2021-11-13 01:33:49,837 INFO L861 garLoopResultBuilder]: At program point L587(lines 587 604) the Hoare annotation is: true [2021-11-13 01:33:49,837 INFO L858 garLoopResultBuilder]: For program point L224(lines 224 400) no Hoare annotation was computed. [2021-11-13 01:33:49,837 INFO L858 garLoopResultBuilder]: For program point L158(lines 158 400) no Hoare annotation was computed. [2021-11-13 01:33:49,837 INFO L858 garLoopResultBuilder]: For program point L59(lines 59 400) no Hoare annotation was computed. [2021-11-13 01:33:49,837 INFO L858 garLoopResultBuilder]: For program point L94(lines 94 400) no Hoare annotation was computed. [2021-11-13 01:33:49,837 INFO L858 garLoopResultBuilder]: For program point L392(lines 392 400) no Hoare annotation was computed. [2021-11-13 01:33:49,838 INFO L858 garLoopResultBuilder]: For program point L326(lines 326 400) no Hoare annotation was computed. [2021-11-13 01:33:49,838 INFO L858 garLoopResultBuilder]: For program point L260(lines 260 400) no Hoare annotation was computed. [2021-11-13 01:33:49,838 INFO L858 garLoopResultBuilder]: For program point L228(lines 228 400) no Hoare annotation was computed. [2021-11-13 01:33:49,838 INFO L858 garLoopResultBuilder]: For program point L162(lines 162 400) no Hoare annotation was computed. [2021-11-13 01:33:49,838 INFO L858 garLoopResultBuilder]: For program point L129(lines 129 400) no Hoare annotation was computed. [2021-11-13 01:33:49,838 INFO L858 garLoopResultBuilder]: For program point L328(lines 328 400) no Hoare annotation was computed. [2021-11-13 01:33:49,838 INFO L858 garLoopResultBuilder]: For program point L196(lines 196 400) no Hoare annotation was computed. [2021-11-13 01:33:49,838 INFO L858 garLoopResultBuilder]: For program point L64(lines 64 400) no Hoare annotation was computed. [2021-11-13 01:33:49,838 INFO L854 garLoopResultBuilder]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse3 (= ~a16~0 6)) (.cse5 (<= 15 ~a8~0)) (.cse1 (= ~a17~0 1)) (.cse4 (= ~a7~0 1)) (.cse7 (<= ~a16~0 4)) (.cse2 (= ~a20~0 1)) (.cse0 (= ~a21~0 1)) (.cse6 (<= ~a16~0 5))) (or (and (= ~a12~0 8) .cse0 .cse1 .cse2) (and .cse3 .cse4 .cse2) (and .cse0 .cse2 .cse5) (and .cse3 .cse0 .cse5) (and .cse0 .cse4 .cse6) (and .cse0 .cse7) (and .cse4 .cse7 .cse2) (and .cse1 .cse4 .cse6 .cse2) (and .cse1 .cse4 .cse7) (and (not .cse2) .cse0 .cse6))) [2021-11-13 01:33:49,838 INFO L858 garLoopResultBuilder]: For program point L296(lines 296 400) no Hoare annotation was computed. [2021-11-13 01:33:49,839 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 504) no Hoare annotation was computed. [2021-11-13 01:33:49,839 INFO L858 garLoopResultBuilder]: For program point L363(lines 363 400) no Hoare annotation was computed. [2021-11-13 01:33:49,839 INFO L858 garLoopResultBuilder]: For program point L199(lines 199 400) no Hoare annotation was computed. [2021-11-13 01:33:49,839 INFO L858 garLoopResultBuilder]: For program point L365(lines 365 400) no Hoare annotation was computed. [2021-11-13 01:33:49,839 INFO L858 garLoopResultBuilder]: For program point L266(lines 266 400) no Hoare annotation was computed. [2021-11-13 01:33:49,839 INFO L858 garLoopResultBuilder]: For program point L233(lines 233 400) no Hoare annotation was computed. [2021-11-13 01:33:49,839 INFO L858 garLoopResultBuilder]: For program point L134(lines 134 400) no Hoare annotation was computed. [2021-11-13 01:33:49,842 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:33:49,846 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 01:33:49,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 01:33:49 BoogieIcfgContainer [2021-11-13 01:33:49,865 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-13 01:33:49,865 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-13 01:33:49,866 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-13 01:33:49,866 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-13 01:33:49,866 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:33:40" (3/4) ... [2021-11-13 01:33:49,869 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-13 01:33:49,896 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 109 nodes and edges [2021-11-13 01:33:49,898 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2021-11-13 01:33:49,899 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-11-13 01:33:49,901 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-13 01:33:50,028 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6953dc02-d95e-4173-b5b5-759afdecf5d6/bin/utaipan-vmNK8stdcF/witness.graphml [2021-11-13 01:33:50,028 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-13 01:33:50,029 INFO L158 Benchmark]: Toolchain (without parser) took 12092.85ms. Allocated memory was 113.2MB in the beginning and 243.3MB in the end (delta: 130.0MB). Free memory was 73.3MB in the beginning and 200.0MB in the end (delta: -126.7MB). Peak memory consumption was 132.5MB. Max. memory is 16.1GB. [2021-11-13 01:33:50,029 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 113.2MB. Free memory is still 91.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 01:33:50,030 INFO L158 Benchmark]: CACSL2BoogieTranslator took 681.58ms. Allocated memory is still 113.2MB. Free memory was 73.0MB in the beginning and 70.8MB in the end (delta: 2.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-13 01:33:50,030 INFO L158 Benchmark]: Boogie Procedure Inliner took 108.39ms. Allocated memory is still 113.2MB. Free memory was 70.8MB in the beginning and 65.1MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-13 01:33:50,031 INFO L158 Benchmark]: Boogie Preprocessor took 100.13ms. Allocated memory is still 113.2MB. Free memory was 65.1MB in the beginning and 60.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-13 01:33:50,031 INFO L158 Benchmark]: RCFGBuilder took 1451.65ms. Allocated memory was 113.2MB in the beginning and 159.4MB in the end (delta: 46.1MB). Free memory was 60.9MB in the beginning and 74.2MB in the end (delta: -13.3MB). Peak memory consumption was 40.1MB. Max. memory is 16.1GB. [2021-11-13 01:33:50,031 INFO L158 Benchmark]: TraceAbstraction took 9577.82ms. Allocated memory was 159.4MB in the beginning and 243.3MB in the end (delta: 83.9MB). Free memory was 73.1MB in the beginning and 76.2MB in the end (delta: -3.0MB). Peak memory consumption was 79.8MB. Max. memory is 16.1GB. [2021-11-13 01:33:50,032 INFO L158 Benchmark]: Witness Printer took 163.15ms. Allocated memory is still 243.3MB. Free memory was 76.2MB in the beginning and 200.0MB in the end (delta: -123.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-13 01:33:50,034 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 113.2MB. Free memory is still 91.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 681.58ms. Allocated memory is still 113.2MB. Free memory was 73.0MB in the beginning and 70.8MB in the end (delta: 2.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 108.39ms. Allocated memory is still 113.2MB. Free memory was 70.8MB in the beginning and 65.1MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 100.13ms. Allocated memory is still 113.2MB. Free memory was 65.1MB in the beginning and 60.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1451.65ms. Allocated memory was 113.2MB in the beginning and 159.4MB in the end (delta: 46.1MB). Free memory was 60.9MB in the beginning and 74.2MB in the end (delta: -13.3MB). Peak memory consumption was 40.1MB. Max. memory is 16.1GB. * TraceAbstraction took 9577.82ms. Allocated memory was 159.4MB in the beginning and 243.3MB in the end (delta: 83.9MB). Free memory was 73.1MB in the beginning and 76.2MB in the end (delta: -3.0MB). Peak memory consumption was 79.8MB. Max. memory is 16.1GB. * Witness Printer took 163.15ms. Allocated memory is still 243.3MB. Free memory was 76.2MB in the beginning and 200.0MB in the end (delta: -123.8MB). Peak memory consumption was 6.3MB. 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: 504]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.5s, OverallIterations: 11, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 800 SdHoareTripleChecker+Valid, 3747.77ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 800 mSDsluCounter, 624 SdHoareTripleChecker+Invalid, 3044.89ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 58 mSDsCounter, 672 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2782 IncrementalHoareTripleChecker+Invalid, 3454 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 672 mSolverCounterUnsat, 567 mSDtfsCounter, 2782 mSolverCounterSat, 40.33ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 861 GetRequests, 839 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1139occurred in iteration=10, InterpolantAutomatonStates: 37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 781 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 45 NumberOfFragments, 211 HoareAnnotationTreeSize, 3 FomulaSimplifications, 198 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 3 FomulaSimplificationsInter, 3636 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 1764 NumberOfCodeBlocks, 1764 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 2164 ConstructedInterpolants, 0 QuantifiedInterpolants, 9077 SizeOfPredicates, 0 NumberOfNonLiveVariables, 889 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 15 InterpolantComputations, 13 PerfectInterpolantSequences, 1787/1942 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: (((((((((((a12 == 8 && a21 == 1) && a17 == 1) && a20 == 1) || ((a16 == 6 && a7 == 1) && a20 == 1)) || ((a21 == 1 && a20 == 1) && 15 <= a8)) || ((a16 == 6 && a21 == 1) && 15 <= a8)) || ((a21 == 1 && a7 == 1) && a16 <= 5)) || (a21 == 1 && a16 <= 4)) || ((a7 == 1 && a16 <= 4) && a20 == 1)) || (((a17 == 1 && a7 == 1) && a16 <= 5) && a20 == 1)) || ((a17 == 1 && a7 == 1) && a16 <= 4)) || ((!(a20 == 1) && a21 == 1) && a16 <= 5) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((((((((((a12 == 8 && a21 == 1) && a17 == 1) && a20 == 1) || ((a16 == 6 && a7 == 1) && a20 == 1)) || ((a21 == 1 && a20 == 1) && 15 <= a8)) || ((a16 == 6 && a21 == 1) && 15 <= a8)) || ((a21 == 1 && a7 == 1) && a16 <= 5)) || (a21 == 1 && a16 <= 4)) || ((a7 == 1 && a16 <= 4) && a20 == 1)) || (((a17 == 1 && a7 == 1) && a16 <= 5) && a20 == 1)) || ((a17 == 1 && a7 == 1) && a16 <= 4)) || ((!(a20 == 1) && a21 == 1) && a16 <= 5) RESULT: Ultimate proved your program to be correct! [2021-11-13 01:33:50,093 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6953dc02-d95e-4173-b5b5-759afdecf5d6/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE