./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label00.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0735b5a-5167-4685-8c41-9ddb87d84fb7/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0735b5a-5167-4685-8c41-9ddb87d84fb7/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0735b5a-5167-4685-8c41-9ddb87d84fb7/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0735b5a-5167-4685-8c41-9ddb87d84fb7/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label00.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0735b5a-5167-4685-8c41-9ddb87d84fb7/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0735b5a-5167-4685-8c41-9ddb87d84fb7/bin/utaipan-G1rejxKTta --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 ef0fc431edab04e2bc46b00be67c275761704e057ac7d10029420dfecba76e3a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 17:41:32,449 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:41:32,452 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:41:32,501 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:41:32,502 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:41:32,505 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:41:32,510 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:41:32,515 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:41:32,518 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:41:32,523 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:41:32,525 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:41:32,527 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:41:32,528 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:41:32,530 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:41:32,532 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:41:32,534 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:41:32,536 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:41:32,537 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:41:32,539 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:41:32,547 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:41:32,549 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:41:32,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:41:32,553 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:41:32,555 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:41:32,565 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:41:32,565 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:41:32,566 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:41:32,568 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:41:32,568 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:41:32,570 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:41:32,570 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:41:32,571 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:41:32,573 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:41:32,576 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:41:32,577 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:41:32,577 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:41:32,578 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:41:32,579 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:41:32,579 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:41:32,580 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:41:32,588 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:41:32,589 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0735b5a-5167-4685-8c41-9ddb87d84fb7/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-10-17 17:41:32,646 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:41:32,646 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:41:32,647 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:41:32,647 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:41:32,648 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:41:32,648 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:41:32,649 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:41:32,649 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:41:32,649 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:41:32,649 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:41:32,650 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:41:32,650 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:41:32,651 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:41:32,651 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:41:32,651 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:41:32,651 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:41:32,651 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:41:32,651 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:41:32,652 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:41:32,653 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:41:32,653 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:41:32,653 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:41:32,653 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:41:32,653 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:41:32,654 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:41:32,654 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:41:32,654 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:41:32,654 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:41:32,655 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:41:32,655 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:41:32,655 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:41:32,655 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:41:32,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:41:32,656 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:41:32,656 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:41:32,656 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:41:32,657 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:41:32,657 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:41:32,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:41:32,657 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:41:32,657 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:41:32,658 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0735b5a-5167-4685-8c41-9ddb87d84fb7/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0735b5a-5167-4685-8c41-9ddb87d84fb7/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef0fc431edab04e2bc46b00be67c275761704e057ac7d10029420dfecba76e3a [2022-10-17 17:41:32,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:41:32,918 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:41:32,921 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:41:32,922 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:41:32,923 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:41:32,925 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0735b5a-5167-4685-8c41-9ddb87d84fb7/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/eca-rers2012/Problem01_label00.c [2022-10-17 17:41:32,989 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0735b5a-5167-4685-8c41-9ddb87d84fb7/bin/utaipan-G1rejxKTta/data/1d33d1ff1/65a59dea76324923aa084348571881dd/FLAG693d410dd [2022-10-17 17:41:33,506 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:41:33,506 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0735b5a-5167-4685-8c41-9ddb87d84fb7/sv-benchmarks/c/eca-rers2012/Problem01_label00.c [2022-10-17 17:41:33,534 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0735b5a-5167-4685-8c41-9ddb87d84fb7/bin/utaipan-G1rejxKTta/data/1d33d1ff1/65a59dea76324923aa084348571881dd/FLAG693d410dd [2022-10-17 17:41:33,791 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0735b5a-5167-4685-8c41-9ddb87d84fb7/bin/utaipan-G1rejxKTta/data/1d33d1ff1/65a59dea76324923aa084348571881dd [2022-10-17 17:41:33,794 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:41:33,795 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:41:33,796 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:41:33,799 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:41:33,803 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:41:33,803 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:41:33" (1/1) ... [2022-10-17 17:41:33,804 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f0811b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:41:33, skipping insertion in model container [2022-10-17 17:41:33,807 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:41:33" (1/1) ... [2022-10-17 17:41:33,814 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:41:33,874 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:41:34,262 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0735b5a-5167-4685-8c41-9ddb87d84fb7/sv-benchmarks/c/eca-rers2012/Problem01_label00.c[18976,18989] [2022-10-17 17:41:34,288 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:41:34,308 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:41:34,429 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0735b5a-5167-4685-8c41-9ddb87d84fb7/sv-benchmarks/c/eca-rers2012/Problem01_label00.c[18976,18989] [2022-10-17 17:41:34,456 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:41:34,475 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:41:34,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:41:34 WrapperNode [2022-10-17 17:41:34,477 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:41:34,478 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:41:34,478 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:41:34,478 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:41:34,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:41:34" (1/1) ... [2022-10-17 17:41:34,505 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:41:34" (1/1) ... [2022-10-17 17:41:34,584 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 657 [2022-10-17 17:41:34,585 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:41:34,594 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:41:34,594 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:41:34,594 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:41:34,602 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:41:34" (1/1) ... [2022-10-17 17:41:34,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:41:34" (1/1) ... [2022-10-17 17:41:34,608 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:41:34" (1/1) ... [2022-10-17 17:41:34,608 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:41:34" (1/1) ... [2022-10-17 17:41:34,650 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:41:34" (1/1) ... [2022-10-17 17:41:34,660 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:41:34" (1/1) ... [2022-10-17 17:41:34,673 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:41:34" (1/1) ... [2022-10-17 17:41:34,689 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:41:34" (1/1) ... [2022-10-17 17:41:34,699 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:41:34,700 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:41:34,700 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:41:34,700 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:41:34,701 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:41:34" (1/1) ... [2022-10-17 17:41:34,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:41:34,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0735b5a-5167-4685-8c41-9ddb87d84fb7/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:41:34,730 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0735b5a-5167-4685-8c41-9ddb87d84fb7/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:41:34,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0735b5a-5167-4685-8c41-9ddb87d84fb7/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:41:34,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:41:34,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:41:34,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:41:34,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:41:34,891 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:41:34,893 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:41:36,066 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:41:36,346 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:41:36,347 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 17:41:36,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:41:36 BoogieIcfgContainer [2022-10-17 17:41:36,350 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:41:36,352 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:41:36,352 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:41:36,356 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:41:36,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:41:33" (1/3) ... [2022-10-17 17:41:36,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e00491 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:41:36, skipping insertion in model container [2022-10-17 17:41:36,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:41:34" (2/3) ... [2022-10-17 17:41:36,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e00491 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:41:36, skipping insertion in model container [2022-10-17 17:41:36,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:41:36" (3/3) ... [2022-10-17 17:41:36,360 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label00.c [2022-10-17 17:41:36,380 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:41:36,380 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 17:41:36,436 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:41:36,444 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@426bc779, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:41:36,444 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 17:41:36,450 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:41:36,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-10-17 17:41:36,461 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:41:36,462 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:41:36,463 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:41:36,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:41:36,469 INFO L85 PathProgramCache]: Analyzing trace with hash 379024007, now seen corresponding path program 1 times [2022-10-17 17:41:36,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:41:36,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520249705] [2022-10-17 17:41:36,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:41:36,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:41:36,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:41:37,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:41:37,343 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:41:37,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520249705] [2022-10-17 17:41:37,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520249705] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:41:37,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:41:37,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:41:37,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050010812] [2022-10-17 17:41:37,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:41:37,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 17:41:37,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:41:37,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 17:41:37,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:41:37,383 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 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:41:38,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:41:38,023 INFO L93 Difference]: Finished difference Result 297 states and 569 transitions. [2022-10-17 17:41:38,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 17:41:38,026 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-10-17 17:41:38,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:41:38,046 INFO L225 Difference]: With dead ends: 297 [2022-10-17 17:41:38,046 INFO L226 Difference]: Without dead ends: 216 [2022-10-17 17:41:38,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:41:38,056 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 172 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-17 17:41:38,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 35 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-17 17:41:38,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-10-17 17:41:38,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2022-10-17 17:41:38,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 1.5627906976744186) internal successors, (336), 215 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:41:38,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 336 transitions. [2022-10-17 17:41:38,145 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 336 transitions. Word has length 71 [2022-10-17 17:41:38,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:41:38,147 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 336 transitions. [2022-10-17 17:41:38,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:41:38,148 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 336 transitions. [2022-10-17 17:41:38,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-10-17 17:41:38,160 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:41:38,160 INFO L195 NwaCegarLoop]: 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] [2022-10-17 17:41:38,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 17:41:38,161 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:41:38,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:41:38,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1583655302, now seen corresponding path program 1 times [2022-10-17 17:41:38,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:41:38,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131524706] [2022-10-17 17:41:38,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:41:38,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:41:38,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:41:38,660 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:41:38,661 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:41:38,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131524706] [2022-10-17 17:41:38,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131524706] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:41:38,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:41:38,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:41:38,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055721067] [2022-10-17 17:41:38,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:41:38,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 17:41:38,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:41:38,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 17:41:38,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:41:38,666 INFO L87 Difference]: Start difference. First operand 216 states and 336 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) [2022-10-17 17:41:39,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:41:39,224 INFO L93 Difference]: Finished difference Result 500 states and 848 transitions. [2022-10-17 17:41:39,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 17:41:39,225 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 [2022-10-17 17:41:39,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:41:39,228 INFO L225 Difference]: With dead ends: 500 [2022-10-17 17:41:39,228 INFO L226 Difference]: Without dead ends: 287 [2022-10-17 17:41:39,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:41:39,231 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 69 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-17 17:41:39,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 76 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-17 17:41:39,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-10-17 17:41:39,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 216. [2022-10-17 17:41:39,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 1.3627906976744186) internal successors, (293), 215 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:41:39,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 293 transitions. [2022-10-17 17:41:39,247 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 293 transitions. Word has length 78 [2022-10-17 17:41:39,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:41:39,248 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 293 transitions. [2022-10-17 17:41:39,248 INFO L496 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) [2022-10-17 17:41:39,248 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 293 transitions. [2022-10-17 17:41:39,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-10-17 17:41:39,250 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:41:39,250 INFO L195 NwaCegarLoop]: 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] [2022-10-17 17:41:39,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 17:41:39,251 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:41:39,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:41:39,252 INFO L85 PathProgramCache]: Analyzing trace with hash -2090520392, now seen corresponding path program 1 times [2022-10-17 17:41:39,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:41:39,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121702839] [2022-10-17 17:41:39,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:41:39,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:41:39,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:41:39,405 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-17 17:41:39,406 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:41:39,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121702839] [2022-10-17 17:41:39,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121702839] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:41:39,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:41:39,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:41:39,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540613402] [2022-10-17 17:41:39,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:41:39,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:41:39,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:41:39,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:41:39,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:41:39,409 INFO L87 Difference]: Start difference. First operand 216 states and 293 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:41:39,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:41:39,656 INFO L93 Difference]: Finished difference Result 502 states and 684 transitions. [2022-10-17 17:41:39,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:41:39,657 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 [2022-10-17 17:41:39,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:41:39,659 INFO L225 Difference]: With dead ends: 502 [2022-10-17 17:41:39,659 INFO L226 Difference]: Without dead ends: 287 [2022-10-17 17:41:39,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:41:39,662 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 65 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 17:41:39,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 42 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 17:41:39,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-10-17 17:41:39,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2022-10-17 17:41:39,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.3146853146853146) internal successors, (376), 286 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:41:39,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 376 transitions. [2022-10-17 17:41:39,677 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 376 transitions. Word has length 86 [2022-10-17 17:41:39,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:41:39,677 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 376 transitions. [2022-10-17 17:41:39,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:41:39,678 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 376 transitions. [2022-10-17 17:41:39,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-10-17 17:41:39,680 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:41:39,680 INFO L195 NwaCegarLoop]: 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] [2022-10-17 17:41:39,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 17:41:39,681 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:41:39,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:41:39,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1999069254, now seen corresponding path program 1 times [2022-10-17 17:41:39,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:41:39,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475169419] [2022-10-17 17:41:39,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:41:39,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:41:39,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:41:39,814 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-10-17 17:41:39,815 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:41:39,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475169419] [2022-10-17 17:41:39,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475169419] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:41:39,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:41:39,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:41:39,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95000487] [2022-10-17 17:41:39,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:41:39,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:41:39,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:41:39,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:41:39,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:41:39,817 INFO L87 Difference]: Start difference. First operand 287 states and 376 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) [2022-10-17 17:41:40,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:41:40,070 INFO L93 Difference]: Finished difference Result 857 states and 1125 transitions. [2022-10-17 17:41:40,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:41:40,071 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 [2022-10-17 17:41:40,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:41:40,075 INFO L225 Difference]: With dead ends: 857 [2022-10-17 17:41:40,075 INFO L226 Difference]: Without dead ends: 571 [2022-10-17 17:41:40,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:41:40,077 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 71 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 17:41:40,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 24 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 17:41:40,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-10-17 17:41:40,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 500. [2022-10-17 17:41:40,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 499 states have (on average 1.348697394789579) internal successors, (673), 499 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:41:40,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 673 transitions. [2022-10-17 17:41:40,096 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 673 transitions. Word has length 95 [2022-10-17 17:41:40,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:41:40,096 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 673 transitions. [2022-10-17 17:41:40,097 INFO L496 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) [2022-10-17 17:41:40,097 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 673 transitions. [2022-10-17 17:41:40,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-10-17 17:41:40,099 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:41:40,099 INFO L195 NwaCegarLoop]: 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] [2022-10-17 17:41:40,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 17:41:40,100 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:41:40,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:41:40,100 INFO L85 PathProgramCache]: Analyzing trace with hash 812559849, now seen corresponding path program 1 times [2022-10-17 17:41:40,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:41:40,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346561516] [2022-10-17 17:41:40,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:41:40,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:41:40,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:41:40,313 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-17 17:41:40,314 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:41:40,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346561516] [2022-10-17 17:41:40,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346561516] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:41:40,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:41:40,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:41:40,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891624186] [2022-10-17 17:41:40,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:41:40,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 17:41:40,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:41:40,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 17:41:40,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:41:40,317 INFO L87 Difference]: Start difference. First operand 500 states and 673 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) [2022-10-17 17:41:40,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:41:40,740 INFO L93 Difference]: Finished difference Result 1283 states and 1776 transitions. [2022-10-17 17:41:40,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 17:41:40,741 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 [2022-10-17 17:41:40,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:41:40,746 INFO L225 Difference]: With dead ends: 1283 [2022-10-17 17:41:40,747 INFO L226 Difference]: Without dead ends: 784 [2022-10-17 17:41:40,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:41:40,753 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 137 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-17 17:41:40,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 30 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-17 17:41:40,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2022-10-17 17:41:40,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 713. [2022-10-17 17:41:40,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 712 states have (on average 1.3075842696629214) internal successors, (931), 712 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:41:40,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 931 transitions. [2022-10-17 17:41:40,784 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 931 transitions. Word has length 101 [2022-10-17 17:41:40,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:41:40,786 INFO L495 AbstractCegarLoop]: Abstraction has 713 states and 931 transitions. [2022-10-17 17:41:40,786 INFO L496 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) [2022-10-17 17:41:40,786 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 931 transitions. [2022-10-17 17:41:40,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-10-17 17:41:40,794 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:41:40,795 INFO L195 NwaCegarLoop]: 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] [2022-10-17 17:41:40,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 17:41:40,795 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:41:40,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:41:40,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1324203436, now seen corresponding path program 1 times [2022-10-17 17:41:40,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:41:40,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862721010] [2022-10-17 17:41:40,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:41:40,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:41:40,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:41:41,074 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-10-17 17:41:41,074 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:41:41,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862721010] [2022-10-17 17:41:41,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862721010] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:41:41,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:41:41,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:41:41,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952004695] [2022-10-17 17:41:41,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:41:41,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 17:41:41,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:41:41,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 17:41:41,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:41:41,078 INFO L87 Difference]: Start difference. First operand 713 states and 931 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) [2022-10-17 17:41:41,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:41:41,536 INFO L93 Difference]: Finished difference Result 1709 states and 2251 transitions. [2022-10-17 17:41:41,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 17:41:41,537 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 [2022-10-17 17:41:41,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:41:41,543 INFO L225 Difference]: With dead ends: 1709 [2022-10-17 17:41:41,543 INFO L226 Difference]: Without dead ends: 997 [2022-10-17 17:41:41,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:41:41,545 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 191 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-17 17:41:41,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 37 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-17 17:41:41,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2022-10-17 17:41:41,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 926. [2022-10-17 17:41:41,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 925 states have (on average 1.3005405405405406) internal successors, (1203), 925 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:41:41,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1203 transitions. [2022-10-17 17:41:41,577 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1203 transitions. Word has length 115 [2022-10-17 17:41:41,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:41:41,577 INFO L495 AbstractCegarLoop]: Abstraction has 926 states and 1203 transitions. [2022-10-17 17:41:41,577 INFO L496 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) [2022-10-17 17:41:41,578 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1203 transitions. [2022-10-17 17:41:41,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-10-17 17:41:41,580 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:41:41,580 INFO L195 NwaCegarLoop]: 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, 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] [2022-10-17 17:41:41,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 17:41:41,581 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:41:41,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:41:41,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1087701417, now seen corresponding path program 1 times [2022-10-17 17:41:41,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:41:41,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821454405] [2022-10-17 17:41:41,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:41:41,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:41:41,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:41:41,836 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:41:41,836 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:41:41,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821454405] [2022-10-17 17:41:41,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821454405] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:41:41,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:41:41,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 17:41:41,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240979771] [2022-10-17 17:41:41,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:41:41,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 17:41:41,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:41:41,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 17:41:41,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:41:41,838 INFO L87 Difference]: Start difference. First operand 926 states and 1203 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:41:42,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:41:42,296 INFO L93 Difference]: Finished difference Result 2064 states and 2665 transitions. [2022-10-17 17:41:42,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 17:41:42,297 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-10-17 17:41:42,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:41:42,303 INFO L225 Difference]: With dead ends: 2064 [2022-10-17 17:41:42,303 INFO L226 Difference]: Without dead ends: 1139 [2022-10-17 17:41:42,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:41:42,305 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 96 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-17 17:41:42,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 26 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-17 17:41:42,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2022-10-17 17:41:42,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 926. [2022-10-17 17:41:42,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 925 states have (on average 1.268108108108108) internal successors, (1173), 925 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:41:42,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1173 transitions. [2022-10-17 17:41:42,335 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1173 transitions. Word has length 132 [2022-10-17 17:41:42,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:41:42,336 INFO L495 AbstractCegarLoop]: Abstraction has 926 states and 1173 transitions. [2022-10-17 17:41:42,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:41:42,336 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1173 transitions. [2022-10-17 17:41:42,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-10-17 17:41:42,340 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:41:42,340 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:41:42,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 17:41:42,341 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:41:42,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:41:42,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1119872599, now seen corresponding path program 1 times [2022-10-17 17:41:42,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:41:42,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956123424] [2022-10-17 17:41:42,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:41:42,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:41:42,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:41:42,541 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-10-17 17:41:42,541 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:41:42,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956123424] [2022-10-17 17:41:42,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956123424] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:41:42,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:41:42,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:41:42,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146167234] [2022-10-17 17:41:42,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:41:42,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:41:42,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:41:42,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:41:42,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:41:42,544 INFO L87 Difference]: Start difference. First operand 926 states and 1173 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) [2022-10-17 17:41:42,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:41:42,849 INFO L93 Difference]: Finished difference Result 1993 states and 2498 transitions. [2022-10-17 17:41:42,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:41:42,850 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 175 [2022-10-17 17:41:42,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:41:42,859 INFO L225 Difference]: With dead ends: 1993 [2022-10-17 17:41:42,860 INFO L226 Difference]: Without dead ends: 1068 [2022-10-17 17:41:42,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:41:42,862 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 26 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-17 17:41:42,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 113 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-17 17:41:42,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2022-10-17 17:41:42,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 997. [2022-10-17 17:41:42,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 996 states have (on average 1.216867469879518) internal successors, (1212), 996 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:41:42,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1212 transitions. [2022-10-17 17:41:42,895 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1212 transitions. Word has length 175 [2022-10-17 17:41:42,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:41:42,896 INFO L495 AbstractCegarLoop]: Abstraction has 997 states and 1212 transitions. [2022-10-17 17:41:42,896 INFO L496 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) [2022-10-17 17:41:42,896 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1212 transitions. [2022-10-17 17:41:42,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-10-17 17:41:42,900 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:41:42,901 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 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, 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] [2022-10-17 17:41:42,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 17:41:42,901 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:41:42,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:41:42,903 INFO L85 PathProgramCache]: Analyzing trace with hash 2104898560, now seen corresponding path program 1 times [2022-10-17 17:41:42,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:41:42,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894624982] [2022-10-17 17:41:42,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:41:42,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:41:42,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:41:43,243 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 124 proven. 67 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-10-17 17:41:43,244 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:41:43,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894624982] [2022-10-17 17:41:43,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894624982] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:41:43,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2405684] [2022-10-17 17:41:43,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:41:43,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:41:43,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0735b5a-5167-4685-8c41-9ddb87d84fb7/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:41:43,248 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0735b5a-5167-4685-8c41-9ddb87d84fb7/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:41:43,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0735b5a-5167-4685-8c41-9ddb87d84fb7/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 17:41:43,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:41:43,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 17:41:43,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:41:43,533 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-10-17 17:41:43,533 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:41:43,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2405684] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:41:43,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 17:41:43,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-10-17 17:41:43,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139394758] [2022-10-17 17:41:43,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:41:43,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:41:43,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:41:43,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:41:43,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:41:43,536 INFO L87 Difference]: Start difference. First operand 997 states and 1212 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) [2022-10-17 17:41:43,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:41:43,825 INFO L93 Difference]: Finished difference Result 1993 states and 2423 transitions. [2022-10-17 17:41:43,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:41:43,826 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 197 [2022-10-17 17:41:43,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:41:43,831 INFO L225 Difference]: With dead ends: 1993 [2022-10-17 17:41:43,832 INFO L226 Difference]: Without dead ends: 997 [2022-10-17 17:41:43,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:41:43,834 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 8 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-17 17:41:43,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 106 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-17 17:41:43,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2022-10-17 17:41:43,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 926. [2022-10-17 17:41:43,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 925 states have (on average 1.144864864864865) internal successors, (1059), 925 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:41:43,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1059 transitions. [2022-10-17 17:41:43,860 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1059 transitions. Word has length 197 [2022-10-17 17:41:43,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:41:43,861 INFO L495 AbstractCegarLoop]: Abstraction has 926 states and 1059 transitions. [2022-10-17 17:41:43,861 INFO L496 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) [2022-10-17 17:41:43,862 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1059 transitions. [2022-10-17 17:41:43,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-10-17 17:41:43,866 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:41:43,866 INFO L195 NwaCegarLoop]: 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] [2022-10-17 17:41:43,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0735b5a-5167-4685-8c41-9ddb87d84fb7/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 17:41:44,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0735b5a-5167-4685-8c41-9ddb87d84fb7/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:41:44,091 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:41:44,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:41:44,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1502816590, now seen corresponding path program 1 times [2022-10-17 17:41:44,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:41:44,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94425571] [2022-10-17 17:41:44,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:41:44,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:41:44,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:41:44,860 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 143 proven. 86 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-10-17 17:41:44,860 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:41:44,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94425571] [2022-10-17 17:41:44,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94425571] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:41:44,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806986475] [2022-10-17 17:41:44,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:41:44,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:41:44,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0735b5a-5167-4685-8c41-9ddb87d84fb7/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:41:44,862 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0735b5a-5167-4685-8c41-9ddb87d84fb7/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:41:44,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0735b5a-5167-4685-8c41-9ddb87d84fb7/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 17:41:45,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:41:45,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 17:41:45,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:41:45,144 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-10-17 17:41:45,144 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:41:45,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806986475] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:41:45,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 17:41:45,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-10-17 17:41:45,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077304519] [2022-10-17 17:41:45,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:41:45,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:41:45,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:41:45,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:41:45,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-10-17 17:41:45,147 INFO L87 Difference]: Start difference. First operand 926 states and 1059 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) [2022-10-17 17:41:45,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:41:45,408 INFO L93 Difference]: Finished difference Result 1139 states and 1300 transitions. [2022-10-17 17:41:45,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:41:45,408 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 [2022-10-17 17:41:45,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:41:45,409 INFO L225 Difference]: With dead ends: 1139 [2022-10-17 17:41:45,409 INFO L226 Difference]: Without dead ends: 0 [2022-10-17 17:41:45,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-10-17 17:41:45,411 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 23 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 17:41:45,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 24 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 17:41:45,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-10-17 17:41:45,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-10-17 17:41:45,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:41:45,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-10-17 17:41:45,413 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 216 [2022-10-17 17:41:45,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:41:45,413 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-10-17 17:41:45,413 INFO L496 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) [2022-10-17 17:41:45,413 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-10-17 17:41:45,413 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-10-17 17:41:45,416 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-10-17 17:41:45,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0735b5a-5167-4685-8c41-9ddb87d84fb7/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 17:41:45,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0735b5a-5167-4685-8c41-9ddb87d84fb7/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:41:45,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-10-17 17:41:46,255 INFO L899 garLoopResultBuilder]: For program point L102(lines 102 400) no Hoare annotation was computed. [2022-10-17 17:41:46,255 INFO L899 garLoopResultBuilder]: For program point L598(line 598) no Hoare annotation was computed. [2022-10-17 17:41:46,255 INFO L899 garLoopResultBuilder]: For program point L334(lines 334 400) no Hoare annotation was computed. [2022-10-17 17:41:46,255 INFO L899 garLoopResultBuilder]: For program point L302(lines 302 400) no Hoare annotation was computed. [2022-10-17 17:41:46,255 INFO L899 garLoopResultBuilder]: For program point L170(lines 170 400) no Hoare annotation was computed. [2022-10-17 17:41:46,255 INFO L899 garLoopResultBuilder]: For program point L204(lines 204 400) no Hoare annotation was computed. [2022-10-17 17:41:46,255 INFO L899 garLoopResultBuilder]: For program point L72(lines 72 400) no Hoare annotation was computed. [2022-10-17 17:41:46,256 INFO L899 garLoopResultBuilder]: For program point L271(lines 271 400) no Hoare annotation was computed. [2022-10-17 17:41:46,256 INFO L899 garLoopResultBuilder]: For program point L139(lines 139 400) no Hoare annotation was computed. [2022-10-17 17:41:46,256 INFO L899 garLoopResultBuilder]: For program point L371(lines 371 400) no Hoare annotation was computed. [2022-10-17 17:41:46,256 INFO L899 garLoopResultBuilder]: For program point L107(lines 107 400) no Hoare annotation was computed. [2022-10-17 17:41:46,256 INFO L899 garLoopResultBuilder]: For program point L41(lines 41 400) no Hoare annotation was computed. [2022-10-17 17:41:46,256 INFO L899 garLoopResultBuilder]: For program point L339(lines 339 400) no Hoare annotation was computed. [2022-10-17 17:41:46,256 INFO L899 garLoopResultBuilder]: For program point L207(lines 207 400) no Hoare annotation was computed. [2022-10-17 17:41:46,256 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 400) no Hoare annotation was computed. [2022-10-17 17:41:46,256 INFO L899 garLoopResultBuilder]: For program point L373(lines 373 400) no Hoare annotation was computed. [2022-10-17 17:41:46,257 INFO L899 garLoopResultBuilder]: For program point L241(lines 241 400) no Hoare annotation was computed. [2022-10-17 17:41:46,257 INFO L899 garLoopResultBuilder]: For program point L175(lines 175 400) no Hoare annotation was computed. [2022-10-17 17:41:46,257 INFO L899 garLoopResultBuilder]: For program point L506-1(lines 40 585) no Hoare annotation was computed. [2022-10-17 17:41:46,257 INFO L899 garLoopResultBuilder]: For program point L275(lines 275 400) no Hoare annotation was computed. [2022-10-17 17:41:46,257 INFO L899 garLoopResultBuilder]: For program point L375(lines 375 400) no Hoare annotation was computed. [2022-10-17 17:41:46,258 INFO L899 garLoopResultBuilder]: For program point L309(lines 309 400) no Hoare annotation was computed. [2022-10-17 17:41:46,258 INFO L899 garLoopResultBuilder]: For program point L45(lines 45 400) no Hoare annotation was computed. [2022-10-17 17:41:46,258 INFO L899 garLoopResultBuilder]: For program point L343(lines 343 400) no Hoare annotation was computed. [2022-10-17 17:41:46,258 INFO L899 garLoopResultBuilder]: For program point L112(lines 112 400) no Hoare annotation was computed. [2022-10-17 17:41:46,258 INFO L899 garLoopResultBuilder]: For program point L509-1(lines 40 585) no Hoare annotation was computed. [2022-10-17 17:41:46,258 INFO L899 garLoopResultBuilder]: For program point L278(lines 278 400) no Hoare annotation was computed. [2022-10-17 17:41:46,259 INFO L899 garLoopResultBuilder]: For program point L146(lines 146 400) no Hoare annotation was computed. [2022-10-17 17:41:46,259 INFO L899 garLoopResultBuilder]: For program point L510(line 510) no Hoare annotation was computed. [2022-10-17 17:41:46,259 INFO L899 garLoopResultBuilder]: For program point L213(lines 213 400) no Hoare annotation was computed. [2022-10-17 17:41:46,259 INFO L899 garLoopResultBuilder]: For program point L82(lines 82 400) no Hoare annotation was computed. [2022-10-17 17:41:46,259 INFO L899 garLoopResultBuilder]: For program point L347(lines 347 400) no Hoare annotation was computed. [2022-10-17 17:41:46,259 INFO L899 garLoopResultBuilder]: For program point L248(lines 248 400) no Hoare annotation was computed. [2022-10-17 17:41:46,260 INFO L899 garLoopResultBuilder]: For program point L183(lines 183 400) no Hoare annotation was computed. [2022-10-17 17:41:46,260 INFO L899 garLoopResultBuilder]: For program point L150(lines 150 400) no Hoare annotation was computed. [2022-10-17 17:41:46,260 INFO L899 garLoopResultBuilder]: For program point L382(lines 382 400) no Hoare annotation was computed. [2022-10-17 17:41:46,260 INFO L899 garLoopResultBuilder]: For program point L316(lines 316 400) no Hoare annotation was computed. [2022-10-17 17:41:46,260 INFO L899 garLoopResultBuilder]: For program point L283(lines 283 400) no Hoare annotation was computed. [2022-10-17 17:41:46,260 INFO L899 garLoopResultBuilder]: For program point L118(lines 118 400) no Hoare annotation was computed. [2022-10-17 17:41:46,261 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-10-17 17:41:46,261 INFO L899 garLoopResultBuilder]: For program point L218(lines 218 400) no Hoare annotation was computed. [2022-10-17 17:41:46,261 INFO L899 garLoopResultBuilder]: For program point L53(lines 53 400) no Hoare annotation was computed. [2022-10-17 17:41:46,261 INFO L899 garLoopResultBuilder]: For program point L154(lines 154 400) no Hoare annotation was computed. [2022-10-17 17:41:46,262 INFO L895 garLoopResultBuilder]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse0 (<= 14 ~a8~0)) (.cse3 (= ~a16~0 6)) (.cse5 (<= ~a21~0 0)) (.cse4 (not (= ~a7~0 1))) (.cse6 (= ~a20~0 1)) (.cse1 (= ~a21~0 1)) (.cse2 (<= ~a16~0 5))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4 .cse0 .cse1) (and (= ~a12~0 8) (= ~a8~0 13) .cse1 (= ~a17~0 1) (= ~a16~0 4)) (and .cse3 .cse5) (and .cse5 .cse2) (and .cse4 .cse1 .cse6) (and (not .cse6) .cse1 .cse2))) [2022-10-17 17:41:46,262 INFO L899 garLoopResultBuilder]: For program point L188(lines 188 400) no Hoare annotation was computed. [2022-10-17 17:41:46,262 INFO L899 garLoopResultBuilder]: For program point L387(lines 387 400) no Hoare annotation was computed. [2022-10-17 17:41:46,262 INFO L899 garLoopResultBuilder]: For program point L288(lines 288 400) no Hoare annotation was computed. [2022-10-17 17:41:46,262 INFO L899 garLoopResultBuilder]: For program point L255(lines 255 400) no Hoare annotation was computed. [2022-10-17 17:41:46,263 INFO L899 garLoopResultBuilder]: For program point L90(lines 90 400) no Hoare annotation was computed. [2022-10-17 17:41:46,263 INFO L899 garLoopResultBuilder]: For program point L355(lines 355 400) no Hoare annotation was computed. [2022-10-17 17:41:46,263 INFO L899 garLoopResultBuilder]: For program point L322(lines 322 400) no Hoare annotation was computed. [2022-10-17 17:41:46,263 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-10-17 17:41:46,263 INFO L899 garLoopResultBuilder]: For program point L124(lines 124 400) no Hoare annotation was computed. [2022-10-17 17:41:46,263 INFO L902 garLoopResultBuilder]: At program point L587(lines 587 604) the Hoare annotation is: true [2022-10-17 17:41:46,264 INFO L899 garLoopResultBuilder]: For program point L224(lines 224 400) no Hoare annotation was computed. [2022-10-17 17:41:46,264 INFO L899 garLoopResultBuilder]: For program point L158(lines 158 400) no Hoare annotation was computed. [2022-10-17 17:41:46,264 INFO L899 garLoopResultBuilder]: For program point L59(lines 59 400) no Hoare annotation was computed. [2022-10-17 17:41:46,264 INFO L899 garLoopResultBuilder]: For program point L94(lines 94 400) no Hoare annotation was computed. [2022-10-17 17:41:46,264 INFO L899 garLoopResultBuilder]: For program point L392(lines 392 400) no Hoare annotation was computed. [2022-10-17 17:41:46,264 INFO L899 garLoopResultBuilder]: For program point L326(lines 326 400) no Hoare annotation was computed. [2022-10-17 17:41:46,264 INFO L899 garLoopResultBuilder]: For program point L260(lines 260 400) no Hoare annotation was computed. [2022-10-17 17:41:46,265 INFO L899 garLoopResultBuilder]: For program point L228(lines 228 400) no Hoare annotation was computed. [2022-10-17 17:41:46,265 INFO L899 garLoopResultBuilder]: For program point L162(lines 162 400) no Hoare annotation was computed. [2022-10-17 17:41:46,265 INFO L899 garLoopResultBuilder]: For program point L129(lines 129 400) no Hoare annotation was computed. [2022-10-17 17:41:46,265 INFO L899 garLoopResultBuilder]: For program point L328(lines 328 400) no Hoare annotation was computed. [2022-10-17 17:41:46,265 INFO L899 garLoopResultBuilder]: For program point L196(lines 196 400) no Hoare annotation was computed. [2022-10-17 17:41:46,265 INFO L899 garLoopResultBuilder]: For program point L64(lines 64 400) no Hoare annotation was computed. [2022-10-17 17:41:46,266 INFO L895 garLoopResultBuilder]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse0 (<= 14 ~a8~0)) (.cse3 (= ~a16~0 6)) (.cse5 (<= ~a21~0 0)) (.cse4 (not (= ~a7~0 1))) (.cse6 (= ~a20~0 1)) (.cse1 (= ~a21~0 1)) (.cse2 (<= ~a16~0 5))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4 .cse0 .cse1) (and (= ~a12~0 8) (= ~a8~0 13) .cse1 (= ~a17~0 1) (= ~a16~0 4)) (and .cse3 .cse5) (and .cse5 .cse2) (and .cse4 .cse1 .cse6) (and (not .cse6) .cse1 .cse2))) [2022-10-17 17:41:46,266 INFO L899 garLoopResultBuilder]: For program point L296(lines 296 400) no Hoare annotation was computed. [2022-10-17 17:41:46,266 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 510) no Hoare annotation was computed. [2022-10-17 17:41:46,266 INFO L899 garLoopResultBuilder]: For program point L363(lines 363 400) no Hoare annotation was computed. [2022-10-17 17:41:46,266 INFO L899 garLoopResultBuilder]: For program point L199(lines 199 400) no Hoare annotation was computed. [2022-10-17 17:41:46,267 INFO L899 garLoopResultBuilder]: For program point L365(lines 365 400) no Hoare annotation was computed. [2022-10-17 17:41:46,267 INFO L899 garLoopResultBuilder]: For program point L266(lines 266 400) no Hoare annotation was computed. [2022-10-17 17:41:46,267 INFO L899 garLoopResultBuilder]: For program point L233(lines 233 400) no Hoare annotation was computed. [2022-10-17 17:41:46,267 INFO L899 garLoopResultBuilder]: For program point L134(lines 134 400) no Hoare annotation was computed. [2022-10-17 17:41:46,270 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:41:46,273 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-17 17:41:46,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.10 05:41:46 BoogieIcfgContainer [2022-10-17 17:41:46,291 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-17 17:41:46,291 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 17:41:46,292 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 17:41:46,292 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 17:41:46,292 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:41:36" (3/4) ... [2022-10-17 17:41:46,295 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-10-17 17:41:46,316 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 110 nodes and edges [2022-10-17 17:41:46,318 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2022-10-17 17:41:46,319 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-10-17 17:41:46,321 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-10-17 17:41:46,451 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0735b5a-5167-4685-8c41-9ddb87d84fb7/bin/utaipan-G1rejxKTta/witness.graphml [2022-10-17 17:41:46,451 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 17:41:46,452 INFO L158 Benchmark]: Toolchain (without parser) took 12656.78ms. Allocated memory was 94.4MB in the beginning and 268.4MB in the end (delta: 174.1MB). Free memory was 67.9MB in the beginning and 125.5MB in the end (delta: -57.5MB). Peak memory consumption was 114.8MB. Max. memory is 16.1GB. [2022-10-17 17:41:46,452 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 94.4MB. Free memory was 64.5MB in the beginning and 64.4MB in the end (delta: 44.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:41:46,453 INFO L158 Benchmark]: CACSL2BoogieTranslator took 680.64ms. Allocated memory is still 94.4MB. Free memory was 67.7MB in the beginning and 51.4MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-10-17 17:41:46,453 INFO L158 Benchmark]: Boogie Procedure Inliner took 115.54ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 51.4MB in the beginning and 88.3MB in the end (delta: -36.9MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. [2022-10-17 17:41:46,454 INFO L158 Benchmark]: Boogie Preprocessor took 105.38ms. Allocated memory is still 113.2MB. Free memory was 88.3MB in the beginning and 84.5MB in the end (delta: 3.8MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2022-10-17 17:41:46,455 INFO L158 Benchmark]: RCFGBuilder took 1649.79ms. Allocated memory was 113.2MB in the beginning and 153.1MB in the end (delta: 39.8MB). Free memory was 84.5MB in the beginning and 106.1MB in the end (delta: -21.7MB). Peak memory consumption was 40.9MB. Max. memory is 16.1GB. [2022-10-17 17:41:46,455 INFO L158 Benchmark]: TraceAbstraction took 9938.91ms. Allocated memory was 153.1MB in the beginning and 268.4MB in the end (delta: 115.3MB). Free memory was 104.9MB in the beginning and 136.0MB in the end (delta: -31.1MB). Peak memory consumption was 133.4MB. Max. memory is 16.1GB. [2022-10-17 17:41:46,456 INFO L158 Benchmark]: Witness Printer took 159.94ms. Allocated memory is still 268.4MB. Free memory was 136.0MB in the beginning and 125.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-10-17 17:41:46,458 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 94.4MB. Free memory was 64.5MB in the beginning and 64.4MB in the end (delta: 44.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 680.64ms. Allocated memory is still 94.4MB. Free memory was 67.7MB in the beginning and 51.4MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 115.54ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 51.4MB in the beginning and 88.3MB in the end (delta: -36.9MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 105.38ms. Allocated memory is still 113.2MB. Free memory was 88.3MB in the beginning and 84.5MB in the end (delta: 3.8MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. * RCFGBuilder took 1649.79ms. Allocated memory was 113.2MB in the beginning and 153.1MB in the end (delta: 39.8MB). Free memory was 84.5MB in the beginning and 106.1MB in the end (delta: -21.7MB). Peak memory consumption was 40.9MB. Max. memory is 16.1GB. * TraceAbstraction took 9938.91ms. Allocated memory was 153.1MB in the beginning and 268.4MB in the end (delta: 115.3MB). Free memory was 104.9MB in the beginning and 136.0MB in the end (delta: -31.1MB). Peak memory consumption was 133.4MB. Max. memory is 16.1GB. * Witness Printer took 159.94ms. Allocated memory is still 268.4MB. Free memory was 136.0MB in the beginning and 125.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. 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: 510]: 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: 9.9s, OverallIterations: 10, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 4.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 858 SdHoareTripleChecker+Valid, 3.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 858 mSDsluCounter, 513 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 57 mSDsCounter, 670 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2645 IncrementalHoareTripleChecker+Invalid, 3315 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 670 mSolverCounterUnsat, 458 mSDtfsCounter, 2645 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 446 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=997occurred in iteration=8, InterpolantAutomatonStates: 35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 639 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 40 NumberOfFragments, 155 HoareAnnotationTreeSize, 3 FomulaSimplifications, 6 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 3 FomulaSimplificationsInter, 4280 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 1679 NumberOfCodeBlocks, 1679 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1667 ConstructedInterpolants, 0 QuantifiedInterpolants, 7640 SizeOfPredicates, 0 NumberOfNonLiveVariables, 883 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 12 InterpolantComputations, 10 PerfectInterpolantSequences, 1263/1416 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: (((((((14 <= a8 && a21 == 1) && a16 <= 5) || (((a16 == 6 && !(a7 == 1)) && 14 <= a8) && a21 == 1)) || ((((a12 == 8 && a8 == 13) && a21 == 1) && a17 == 1) && a16 == 4)) || (a16 == 6 && a21 <= 0)) || (a21 <= 0 && a16 <= 5)) || ((!(a7 == 1) && a21 == 1) && a20 == 1)) || ((!(a20 == 1) && a21 == 1) && a16 <= 5) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((((((14 <= a8 && a21 == 1) && a16 <= 5) || (((a16 == 6 && !(a7 == 1)) && 14 <= a8) && a21 == 1)) || ((((a12 == 8 && a8 == 13) && a21 == 1) && a17 == 1) && a16 == 4)) || (a16 == 6 && a21 <= 0)) || (a21 <= 0 && a16 <= 5)) || ((!(a7 == 1) && a21 == 1) && a20 == 1)) || ((!(a20 == 1) && a21 == 1) && a16 <= 5) RESULT: Ultimate proved your program to be correct! [2022-10-17 17:41:46,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0735b5a-5167-4685-8c41-9ddb87d84fb7/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE