./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label12.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7db5b6-9160-4413-80bc-f3bdf1c914b9/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7db5b6-9160-4413-80bc-f3bdf1c914b9/bin/utaipan-tZwUujhuQw/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7db5b6-9160-4413-80bc-f3bdf1c914b9/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7db5b6-9160-4413-80bc-f3bdf1c914b9/bin/utaipan-tZwUujhuQw/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label12.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7db5b6-9160-4413-80bc-f3bdf1c914b9/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7db5b6-9160-4413-80bc-f3bdf1c914b9/bin/utaipan-tZwUujhuQw --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 8b3b52d0771d28687db0ecd40f35ba0cd5ac6eaf2a4275309beef5f48092d06e .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-20 05:10:47,439 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 05:10:47,441 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 05:10:47,497 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 05:10:47,499 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 05:10:47,504 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 05:10:47,507 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 05:10:47,512 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 05:10:47,515 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 05:10:47,524 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 05:10:47,525 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 05:10:47,527 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 05:10:47,528 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 05:10:47,531 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 05:10:47,535 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 05:10:47,540 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 05:10:47,543 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 05:10:47,544 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 05:10:47,546 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 05:10:47,557 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 05:10:47,559 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 05:10:47,561 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 05:10:47,565 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 05:10:47,567 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 05:10:47,571 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 05:10:47,571 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 05:10:47,572 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 05:10:47,574 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 05:10:47,575 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 05:10:47,577 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 05:10:47,577 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 05:10:47,578 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 05:10:47,580 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 05:10:47,582 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 05:10:47,584 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 05:10:47,584 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 05:10:47,585 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 05:10:47,585 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 05:10:47,585 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 05:10:47,586 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 05:10:47,587 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 05:10:47,588 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7db5b6-9160-4413-80bc-f3bdf1c914b9/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-20 05:10:47,619 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 05:10:47,620 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 05:10:47,621 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 05:10:47,621 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 05:10:47,621 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 05:10:47,621 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 05:10:47,622 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-20 05:10:47,622 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 05:10:47,622 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 05:10:47,622 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-20 05:10:47,623 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-20 05:10:47,623 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 05:10:47,623 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-20 05:10:47,624 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-20 05:10:47,624 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-20 05:10:47,625 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 05:10:47,625 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 05:10:47,625 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-20 05:10:47,625 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 05:10:47,626 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 05:10:47,626 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-20 05:10:47,626 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 05:10:47,626 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-20 05:10:47,627 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-20 05:10:47,627 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 05:10:47,627 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-20 05:10:47,627 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 05:10:47,628 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-20 05:10:47,628 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 05:10:47,628 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 05:10:47,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:10:47,629 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 05:10:47,629 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 05:10:47,629 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-20 05:10:47,629 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-20 05:10:47,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-20 05:10:47,630 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-20 05:10:47,630 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 05:10:47,630 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 05:10:47,631 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7db5b6-9160-4413-80bc-f3bdf1c914b9/bin/utaipan-tZwUujhuQw/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7db5b6-9160-4413-80bc-f3bdf1c914b9/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8b3b52d0771d28687db0ecd40f35ba0cd5ac6eaf2a4275309beef5f48092d06e [2021-10-20 05:10:47,941 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 05:10:47,974 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 05:10:47,978 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 05:10:47,979 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 05:10:47,980 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 05:10:47,981 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7db5b6-9160-4413-80bc-f3bdf1c914b9/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/eca-rers2012/Problem01_label12.c [2021-10-20 05:10:48,053 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7db5b6-9160-4413-80bc-f3bdf1c914b9/bin/utaipan-tZwUujhuQw/data/88b1055ff/5a71a99b020d4a278491f308f0f143a3/FLAGf5fd4ef02 [2021-10-20 05:10:48,609 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 05:10:48,610 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7db5b6-9160-4413-80bc-f3bdf1c914b9/sv-benchmarks/c/eca-rers2012/Problem01_label12.c [2021-10-20 05:10:48,628 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7db5b6-9160-4413-80bc-f3bdf1c914b9/bin/utaipan-tZwUujhuQw/data/88b1055ff/5a71a99b020d4a278491f308f0f143a3/FLAGf5fd4ef02 [2021-10-20 05:10:49,064 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7db5b6-9160-4413-80bc-f3bdf1c914b9/bin/utaipan-tZwUujhuQw/data/88b1055ff/5a71a99b020d4a278491f308f0f143a3 [2021-10-20 05:10:49,066 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 05:10:49,068 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 05:10:49,074 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 05:10:49,075 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 05:10:49,078 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 05:10:49,079 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:10:49" (1/1) ... [2021-10-20 05:10:49,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3407a191 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:10:49, skipping insertion in model container [2021-10-20 05:10:49,080 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:10:49" (1/1) ... [2021-10-20 05:10:49,093 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 05:10:49,159 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 05:10:49,618 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7db5b6-9160-4413-80bc-f3bdf1c914b9/sv-benchmarks/c/eca-rers2012/Problem01_label12.c[20469,20482] [2021-10-20 05:10:49,654 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:10:49,670 INFO L203 MainTranslator]: Completed pre-run [2021-10-20 05:10:49,777 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7db5b6-9160-4413-80bc-f3bdf1c914b9/sv-benchmarks/c/eca-rers2012/Problem01_label12.c[20469,20482] [2021-10-20 05:10:49,789 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:10:49,808 INFO L208 MainTranslator]: Completed translation [2021-10-20 05:10:49,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:10:49 WrapperNode [2021-10-20 05:10:49,809 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 05:10:49,810 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-20 05:10:49,811 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-20 05:10:49,811 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-20 05:10:49,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:10:49" (1/1) ... [2021-10-20 05:10:49,850 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:10:49" (1/1) ... [2021-10-20 05:10:49,920 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-20 05:10:49,921 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-20 05:10:49,921 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-20 05:10:49,921 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-20 05:10:49,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:10:49" (1/1) ... [2021-10-20 05:10:49,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:10:49" (1/1) ... [2021-10-20 05:10:49,936 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:10:49" (1/1) ... [2021-10-20 05:10:49,936 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:10:49" (1/1) ... [2021-10-20 05:10:49,963 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:10:49" (1/1) ... [2021-10-20 05:10:49,972 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:10:49" (1/1) ... [2021-10-20 05:10:49,977 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:10:49" (1/1) ... [2021-10-20 05:10:49,984 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-20 05:10:49,985 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-20 05:10:49,985 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-20 05:10:49,985 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-20 05:10:49,986 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:10:49" (1/1) ... [2021-10-20 05:10:50,012 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:10:50,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7db5b6-9160-4413-80bc-f3bdf1c914b9/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 05:10:50,059 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7db5b6-9160-4413-80bc-f3bdf1c914b9/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-20 05:10:50,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7db5b6-9160-4413-80bc-f3bdf1c914b9/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-20 05:10:50,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-20 05:10:50,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-20 05:10:50,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-20 05:10:50,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-20 05:10:51,777 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-20 05:10:51,777 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-20 05:10:51,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:10:51 BoogieIcfgContainer [2021-10-20 05:10:51,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-20 05:10:51,782 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-20 05:10:51,782 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-20 05:10:51,786 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-20 05:10:51,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 05:10:49" (1/3) ... [2021-10-20 05:10:51,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76e7b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:10:51, skipping insertion in model container [2021-10-20 05:10:51,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:10:49" (2/3) ... [2021-10-20 05:10:51,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76e7b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:10:51, skipping insertion in model container [2021-10-20 05:10:51,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:10:51" (3/3) ... [2021-10-20 05:10:51,789 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label12.c [2021-10-20 05:10:51,795 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-20 05:10:51,795 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-20 05:10:51,838 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-20 05:10:51,845 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-20 05:10:51,845 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-20 05:10:51,862 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:10:51,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-20 05:10:51,870 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:10:51,871 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:10:51,871 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:10:51,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:10:51,877 INFO L82 PathProgramCache]: Analyzing trace with hash 379027079, now seen corresponding path program 1 times [2021-10-20 05:10:51,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:10:51,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162361641] [2021-10-20 05:10:51,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:10:51,889 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:10:52,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:10:52,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:10:52,276 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:10:52,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162361641] [2021-10-20 05:10:52,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162361641] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 05:10:52,278 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:10:52,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-20 05:10:52,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374249481] [2021-10-20 05:10:52,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-20 05:10:52,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:10:52,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-20 05:10:52,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:10:52,321 INFO L87 Difference]: Start difference. First operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:10:52,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:10:52,796 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2021-10-20 05:10:52,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 05:10:52,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-10-20 05:10:52,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:10:52,809 INFO L225 Difference]: With dead ends: 224 [2021-10-20 05:10:52,809 INFO L226 Difference]: Without dead ends: 145 [2021-10-20 05:10:52,812 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:10:52,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-10-20 05:10:52,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-10-20 05:10:52,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.7986111111111112) internal successors, (259), 144 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:10:52,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 259 transitions. [2021-10-20 05:10:52,888 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 259 transitions. Word has length 71 [2021-10-20 05:10:52,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:10:52,890 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 259 transitions. [2021-10-20 05:10:52,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:10:52,890 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 259 transitions. [2021-10-20 05:10:52,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-10-20 05:10:52,896 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:10:52,896 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:10:52,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-20 05:10:52,897 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:10:52,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:10:52,901 INFO L82 PathProgramCache]: Analyzing trace with hash -615334630, now seen corresponding path program 1 times [2021-10-20 05:10:52,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:10:52,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529638714] [2021-10-20 05:10:52,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:10:52,903 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:10:52,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:10:52,995 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:10:52,996 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:10:52,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529638714] [2021-10-20 05:10:52,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529638714] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 05:10:52,997 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:10:52,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-20 05:10:52,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190082974] [2021-10-20 05:10:52,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-20 05:10:52,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:10:53,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-20 05:10:53,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:10:53,003 INFO L87 Difference]: Start difference. First operand 145 states and 259 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:10:53,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:10:53,377 INFO L93 Difference]: Finished difference Result 431 states and 774 transitions. [2021-10-20 05:10:53,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 05:10:53,378 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-10-20 05:10:53,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:10:53,381 INFO L225 Difference]: With dead ends: 431 [2021-10-20 05:10:53,381 INFO L226 Difference]: Without dead ends: 287 [2021-10-20 05:10:53,382 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:10:53,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-10-20 05:10:53,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2021-10-20 05:10:53,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.6363636363636365) internal successors, (468), 286 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:10:53,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 468 transitions. [2021-10-20 05:10:53,419 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 468 transitions. Word has length 77 [2021-10-20 05:10:53,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:10:53,419 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 468 transitions. [2021-10-20 05:10:53,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:10:53,420 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 468 transitions. [2021-10-20 05:10:53,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-10-20 05:10:53,423 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:10:53,423 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:10:53,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-20 05:10:53,423 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:10:53,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:10:53,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1583652230, now seen corresponding path program 1 times [2021-10-20 05:10:53,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:10:53,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727662690] [2021-10-20 05:10:53,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:10:53,425 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:10:53,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:10:53,657 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:10:53,657 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:10:53,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727662690] [2021-10-20 05:10:53,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727662690] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 05:10:53,658 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:10:53,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-20 05:10:53,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841577391] [2021-10-20 05:10:53,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-20 05:10:53,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:10:53,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-20 05:10:53,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-20 05:10:53,660 INFO L87 Difference]: Start difference. First operand 287 states and 468 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:10:54,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:10:54,184 INFO L93 Difference]: Finished difference Result 784 states and 1255 transitions. [2021-10-20 05:10:54,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-20 05:10:54,185 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-10-20 05:10:54,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:10:54,189 INFO L225 Difference]: With dead ends: 784 [2021-10-20 05:10:54,189 INFO L226 Difference]: Without dead ends: 429 [2021-10-20 05:10:54,192 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-20 05:10:54,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-10-20 05:10:54,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2021-10-20 05:10:54,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 428 states have (on average 1.3014018691588785) internal successors, (557), 428 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:10:54,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 557 transitions. [2021-10-20 05:10:54,239 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 557 transitions. Word has length 78 [2021-10-20 05:10:54,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:10:54,239 INFO L470 AbstractCegarLoop]: Abstraction has 429 states and 557 transitions. [2021-10-20 05:10:54,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:10:54,240 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 557 transitions. [2021-10-20 05:10:54,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-10-20 05:10:54,243 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:10:54,244 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:10:54,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-20 05:10:54,244 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:10:54,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:10:54,245 INFO L82 PathProgramCache]: Analyzing trace with hash 713142189, now seen corresponding path program 1 times [2021-10-20 05:10:54,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:10:54,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177364816] [2021-10-20 05:10:54,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:10:54,246 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:10:54,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:10:54,339 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-20 05:10:54,340 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:10:54,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177364816] [2021-10-20 05:10:54,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177364816] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 05:10:54,343 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:10:54,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-20 05:10:54,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694195173] [2021-10-20 05:10:54,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-20 05:10:54,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:10:54,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-20 05:10:54,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:10:54,345 INFO L87 Difference]: Start difference. First operand 429 states and 557 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:10:54,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:10:54,629 INFO L93 Difference]: Finished difference Result 857 states and 1138 transitions. [2021-10-20 05:10:54,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 05:10:54,629 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 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 83 [2021-10-20 05:10:54,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:10:54,632 INFO L225 Difference]: With dead ends: 857 [2021-10-20 05:10:54,632 INFO L226 Difference]: Without dead ends: 500 [2021-10-20 05:10:54,635 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:10:54,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-10-20 05:10:54,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 500. [2021-10-20 05:10:54,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 499 states have (on average 1.282565130260521) internal successors, (640), 499 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:10:54,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 640 transitions. [2021-10-20 05:10:54,660 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 640 transitions. Word has length 83 [2021-10-20 05:10:54,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:10:54,661 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 640 transitions. [2021-10-20 05:10:54,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:10:54,663 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 640 transitions. [2021-10-20 05:10:54,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-10-20 05:10:54,668 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:10:54,668 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:10:54,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-20 05:10:54,669 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:10:54,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:10:54,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1234014229, now seen corresponding path program 1 times [2021-10-20 05:10:54,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:10:54,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682882435] [2021-10-20 05:10:54,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:10:54,671 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:10:54,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:10:54,748 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-20 05:10:54,748 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:10:54,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682882435] [2021-10-20 05:10:54,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682882435] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 05:10:54,749 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:10:54,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-20 05:10:54,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183703522] [2021-10-20 05:10:54,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-20 05:10:54,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:10:54,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-20 05:10:54,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:10:54,752 INFO L87 Difference]: Start difference. First operand 500 states and 640 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:10:55,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:10:55,033 INFO L93 Difference]: Finished difference Result 1283 states and 1651 transitions. [2021-10-20 05:10:55,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 05:10:55,033 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 92 [2021-10-20 05:10:55,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:10:55,039 INFO L225 Difference]: With dead ends: 1283 [2021-10-20 05:10:55,039 INFO L226 Difference]: Without dead ends: 855 [2021-10-20 05:10:55,041 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:10:55,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2021-10-20 05:10:55,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 642. [2021-10-20 05:10:55,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 1.2776911076443058) internal successors, (819), 641 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:10:55,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 819 transitions. [2021-10-20 05:10:55,070 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 819 transitions. Word has length 92 [2021-10-20 05:10:55,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:10:55,071 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 819 transitions. [2021-10-20 05:10:55,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:10:55,071 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 819 transitions. [2021-10-20 05:10:55,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-10-20 05:10:55,077 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:10:55,077 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 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] [2021-10-20 05:10:55,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-20 05:10:55,077 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:10:55,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:10:55,078 INFO L82 PathProgramCache]: Analyzing trace with hash -599283684, now seen corresponding path program 1 times [2021-10-20 05:10:55,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:10:55,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112204546] [2021-10-20 05:10:55,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:10:55,079 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:10:55,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:10:55,159 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-20 05:10:55,161 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:10:55,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112204546] [2021-10-20 05:10:55,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112204546] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 05:10:55,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:10:55,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-20 05:10:55,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578183185] [2021-10-20 05:10:55,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-20 05:10:55,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:10:55,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-20 05:10:55,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:10:55,171 INFO L87 Difference]: Start difference. First operand 642 states and 819 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:10:55,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:10:55,472 INFO L93 Difference]: Finished difference Result 1425 states and 1827 transitions. [2021-10-20 05:10:55,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 05:10:55,473 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-10-20 05:10:55,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:10:55,478 INFO L225 Difference]: With dead ends: 1425 [2021-10-20 05:10:55,479 INFO L226 Difference]: Without dead ends: 855 [2021-10-20 05:10:55,480 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:10:55,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2021-10-20 05:10:55,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 784. [2021-10-20 05:10:55,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 783 states have (on average 1.260536398467433) internal successors, (987), 783 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:10:55,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 987 transitions. [2021-10-20 05:10:55,531 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 987 transitions. Word has length 98 [2021-10-20 05:10:55,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:10:55,532 INFO L470 AbstractCegarLoop]: Abstraction has 784 states and 987 transitions. [2021-10-20 05:10:55,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:10:55,532 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 987 transitions. [2021-10-20 05:10:55,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-10-20 05:10:55,535 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:10:55,535 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:10:55,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-20 05:10:55,536 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:10:55,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:10:55,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1359570745, now seen corresponding path program 1 times [2021-10-20 05:10:55,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:10:55,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959180026] [2021-10-20 05:10:55,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:10:55,541 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:10:55,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:10:55,613 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-20 05:10:55,613 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:10:55,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959180026] [2021-10-20 05:10:55,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959180026] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 05:10:55,614 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:10:55,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-20 05:10:55,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863553144] [2021-10-20 05:10:55,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-20 05:10:55,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:10:55,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-20 05:10:55,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-20 05:10:55,616 INFO L87 Difference]: Start difference. First operand 784 states and 987 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:10:56,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:10:56,104 INFO L93 Difference]: Finished difference Result 2064 states and 2680 transitions. [2021-10-20 05:10:56,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-20 05:10:56,105 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-10-20 05:10:56,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:10:56,111 INFO L225 Difference]: With dead ends: 2064 [2021-10-20 05:10:56,112 INFO L226 Difference]: Without dead ends: 1210 [2021-10-20 05:10:56,113 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-20 05:10:56,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2021-10-20 05:10:56,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1068. [2021-10-20 05:10:56,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 1067 states have (on average 1.2352389878163075) internal successors, (1318), 1067 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:10:56,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1318 transitions. [2021-10-20 05:10:56,146 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1318 transitions. Word has length 112 [2021-10-20 05:10:56,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:10:56,146 INFO L470 AbstractCegarLoop]: Abstraction has 1068 states and 1318 transitions. [2021-10-20 05:10:56,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:10:56,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1318 transitions. [2021-10-20 05:10:56,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-10-20 05:10:56,150 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:10:56,150 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-20 05:10:56,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-20 05:10:56,150 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:10:56,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:10:56,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1469594182, now seen corresponding path program 1 times [2021-10-20 05:10:56,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:10:56,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982888344] [2021-10-20 05:10:56,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:10:56,151 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:10:56,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:10:56,219 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-20 05:10:56,219 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:10:56,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982888344] [2021-10-20 05:10:56,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982888344] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 05:10:56,220 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:10:56,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-20 05:10:56,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051522302] [2021-10-20 05:10:56,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-20 05:10:56,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:10:56,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-20 05:10:56,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:10:56,222 INFO L87 Difference]: Start difference. First operand 1068 states and 1318 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:10:56,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:10:56,473 INFO L93 Difference]: Finished difference Result 2206 states and 2737 transitions. [2021-10-20 05:10:56,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 05:10:56,474 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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 118 [2021-10-20 05:10:56,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:10:56,481 INFO L225 Difference]: With dead ends: 2206 [2021-10-20 05:10:56,481 INFO L226 Difference]: Without dead ends: 1139 [2021-10-20 05:10:56,483 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:10:56,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2021-10-20 05:10:56,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1068. [2021-10-20 05:10:56,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 1067 states have (on average 1.2408622305529522) internal successors, (1324), 1067 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:10:56,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1324 transitions. [2021-10-20 05:10:56,514 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1324 transitions. Word has length 118 [2021-10-20 05:10:56,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:10:56,515 INFO L470 AbstractCegarLoop]: Abstraction has 1068 states and 1324 transitions. [2021-10-20 05:10:56,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:10:56,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1324 transitions. [2021-10-20 05:10:56,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-10-20 05:10:56,535 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:10:56,536 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:10:56,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-20 05:10:56,536 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:10:56,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:10:56,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1087704489, now seen corresponding path program 1 times [2021-10-20 05:10:56,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:10:56,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303176225] [2021-10-20 05:10:56,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:10:56,538 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:10:56,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:10:56,606 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:10:56,606 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:10:56,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303176225] [2021-10-20 05:10:56,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303176225] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 05:10:56,607 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:10:56,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-20 05:10:56,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652342006] [2021-10-20 05:10:56,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-20 05:10:56,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:10:56,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-20 05:10:56,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-20 05:10:56,609 INFO L87 Difference]: Start difference. First operand 1068 states and 1324 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) [2021-10-20 05:10:57,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:10:57,031 INFO L93 Difference]: Finished difference Result 2277 states and 2799 transitions. [2021-10-20 05:10:57,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-20 05:10:57,034 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 [2021-10-20 05:10:57,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:10:57,039 INFO L225 Difference]: With dead ends: 2277 [2021-10-20 05:10:57,040 INFO L226 Difference]: Without dead ends: 1210 [2021-10-20 05:10:57,041 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-20 05:10:57,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2021-10-20 05:10:57,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 997. [2021-10-20 05:10:57,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 996 states have (on average 1.1967871485943775) internal successors, (1192), 996 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:10:57,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1192 transitions. [2021-10-20 05:10:57,071 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1192 transitions. Word has length 132 [2021-10-20 05:10:57,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:10:57,072 INFO L470 AbstractCegarLoop]: Abstraction has 997 states and 1192 transitions. [2021-10-20 05:10:57,072 INFO L471 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) [2021-10-20 05:10:57,072 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1192 transitions. [2021-10-20 05:10:57,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-10-20 05:10:57,076 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:10:57,076 INFO L512 BasicCegarLoop]: 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] [2021-10-20 05:10:57,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-20 05:10:57,076 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:10:57,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:10:57,077 INFO L82 PathProgramCache]: Analyzing trace with hash 2104901632, now seen corresponding path program 1 times [2021-10-20 05:10:57,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:10:57,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133390406] [2021-10-20 05:10:57,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:10:57,078 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:10:57,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:10:57,209 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 124 proven. 67 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-20 05:10:57,210 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:10:57,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133390406] [2021-10-20 05:10:57,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133390406] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-20 05:10:57,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802889537] [2021-10-20 05:10:57,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:10:57,211 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 05:10:57,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7db5b6-9160-4413-80bc-f3bdf1c914b9/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 05:10:57,213 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7db5b6-9160-4413-80bc-f3bdf1c914b9/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-20 05:10:57,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7db5b6-9160-4413-80bc-f3bdf1c914b9/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-20 05:10:57,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:10:57,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-20 05:10:57,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:10:57,974 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-10-20 05:10:57,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:10:58,366 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-10-20 05:10:58,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802889537] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:10:58,367 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-20 05:10:58,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2021-10-20 05:10:58,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167012049] [2021-10-20 05:10:58,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-20 05:10:58,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:10:58,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-20 05:10:58,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-20 05:10:58,369 INFO L87 Difference]: Start difference. First operand 997 states and 1192 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:10:58,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:10:58,628 INFO L93 Difference]: Finished difference Result 2206 states and 2612 transitions. [2021-10-20 05:10:58,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 05:10:58,629 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 [2021-10-20 05:10:58,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:10:58,634 INFO L225 Difference]: With dead ends: 2206 [2021-10-20 05:10:58,635 INFO L226 Difference]: Without dead ends: 997 [2021-10-20 05:10:58,636 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 393 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.3ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-20 05:10:58,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2021-10-20 05:10:58,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 997. [2021-10-20 05:10:58,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 996 states have (on average 1.1495983935742973) internal successors, (1145), 996 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:10:58,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1145 transitions. [2021-10-20 05:10:58,665 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1145 transitions. Word has length 197 [2021-10-20 05:10:58,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:10:58,667 INFO L470 AbstractCegarLoop]: Abstraction has 997 states and 1145 transitions. [2021-10-20 05:10:58,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:10:58,667 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1145 transitions. [2021-10-20 05:10:58,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-10-20 05:10:58,671 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:10:58,672 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:10:58,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7db5b6-9160-4413-80bc-f3bdf1c914b9/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-20 05:10:58,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7db5b6-9160-4413-80bc-f3bdf1c914b9/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 05:10:58,886 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:10:58,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:10:58,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1502819662, now seen corresponding path program 1 times [2021-10-20 05:10:58,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:10:58,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004537771] [2021-10-20 05:10:58,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:10:58,886 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:10:58,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:10:59,174 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 143 proven. 86 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-10-20 05:10:59,174 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:10:59,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004537771] [2021-10-20 05:10:59,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004537771] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-20 05:10:59,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380525675] [2021-10-20 05:10:59,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:10:59,175 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 05:10:59,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7db5b6-9160-4413-80bc-f3bdf1c914b9/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 05:10:59,178 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7db5b6-9160-4413-80bc-f3bdf1c914b9/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-20 05:10:59,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7db5b6-9160-4413-80bc-f3bdf1c914b9/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-20 05:10:59,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:10:59,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-20 05:10:59,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:10:59,948 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2021-10-20 05:10:59,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:11:00,359 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2021-10-20 05:11:00,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380525675] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:11:00,360 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-20 05:11:00,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2021-10-20 05:11:00,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247211028] [2021-10-20 05:11:00,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-20 05:11:00,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:11:00,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-20 05:11:00,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-20 05:11:00,363 INFO L87 Difference]: Start difference. First operand 997 states and 1145 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:11:00,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:11:00,615 INFO L93 Difference]: Finished difference Result 1991 states and 2305 transitions. [2021-10-20 05:11:00,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 05:11:00,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 216 [2021-10-20 05:11:00,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:11:00,617 INFO L225 Difference]: With dead ends: 1991 [2021-10-20 05:11:00,617 INFO L226 Difference]: Without dead ends: 0 [2021-10-20 05:11:00,619 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 430 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 35.8ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-20 05:11:00,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-20 05:11:00,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-20 05:11:00,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:11:00,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-20 05:11:00,620 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 216 [2021-10-20 05:11:00,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:11:00,620 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-20 05:11:00,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:11:00,621 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-20 05:11:00,621 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-20 05:11:00,624 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 05:11:00,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7db5b6-9160-4413-80bc-f3bdf1c914b9/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-20 05:11:00,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7db5b6-9160-4413-80bc-f3bdf1c914b9/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 05:11:00,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-20 05:11:00,844 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:11:00,885 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:11:00,886 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:11:01,266 INFO L857 garLoopResultBuilder]: For program point L102(lines 102 400) no Hoare annotation was computed. [2021-10-20 05:11:01,266 INFO L857 garLoopResultBuilder]: For program point L598(line 598) no Hoare annotation was computed. [2021-10-20 05:11:01,266 INFO L857 garLoopResultBuilder]: For program point L334(lines 334 400) no Hoare annotation was computed. [2021-10-20 05:11:01,266 INFO L857 garLoopResultBuilder]: For program point L302(lines 302 400) no Hoare annotation was computed. [2021-10-20 05:11:01,266 INFO L857 garLoopResultBuilder]: For program point L170(lines 170 400) no Hoare annotation was computed. [2021-10-20 05:11:01,266 INFO L857 garLoopResultBuilder]: For program point L204(lines 204 400) no Hoare annotation was computed. [2021-10-20 05:11:01,267 INFO L857 garLoopResultBuilder]: For program point L72(lines 72 400) no Hoare annotation was computed. [2021-10-20 05:11:01,267 INFO L857 garLoopResultBuilder]: For program point L271(lines 271 400) no Hoare annotation was computed. [2021-10-20 05:11:01,267 INFO L857 garLoopResultBuilder]: For program point L139(lines 139 400) no Hoare annotation was computed. [2021-10-20 05:11:01,267 INFO L857 garLoopResultBuilder]: For program point L371(lines 371 400) no Hoare annotation was computed. [2021-10-20 05:11:01,267 INFO L857 garLoopResultBuilder]: For program point L107(lines 107 400) no Hoare annotation was computed. [2021-10-20 05:11:01,267 INFO L857 garLoopResultBuilder]: For program point L41(lines 41 400) no Hoare annotation was computed. [2021-10-20 05:11:01,267 INFO L857 garLoopResultBuilder]: For program point L339(lines 339 400) no Hoare annotation was computed. [2021-10-20 05:11:01,267 INFO L857 garLoopResultBuilder]: For program point L207(lines 207 400) no Hoare annotation was computed. [2021-10-20 05:11:01,267 INFO L857 garLoopResultBuilder]: For program point L75(lines 75 400) no Hoare annotation was computed. [2021-10-20 05:11:01,267 INFO L857 garLoopResultBuilder]: For program point L373(lines 373 400) no Hoare annotation was computed. [2021-10-20 05:11:01,267 INFO L857 garLoopResultBuilder]: For program point L241(lines 241 400) no Hoare annotation was computed. [2021-10-20 05:11:01,268 INFO L857 garLoopResultBuilder]: For program point L175(lines 175 400) no Hoare annotation was computed. [2021-10-20 05:11:01,268 INFO L857 garLoopResultBuilder]: For program point L275(lines 275 400) no Hoare annotation was computed. [2021-10-20 05:11:01,268 INFO L857 garLoopResultBuilder]: For program point L375(lines 375 400) no Hoare annotation was computed. [2021-10-20 05:11:01,268 INFO L857 garLoopResultBuilder]: For program point L309(lines 309 400) no Hoare annotation was computed. [2021-10-20 05:11:01,268 INFO L857 garLoopResultBuilder]: For program point L45(lines 45 400) no Hoare annotation was computed. [2021-10-20 05:11:01,268 INFO L857 garLoopResultBuilder]: For program point L343(lines 343 400) no Hoare annotation was computed. [2021-10-20 05:11:01,268 INFO L857 garLoopResultBuilder]: For program point L112(lines 112 400) no Hoare annotation was computed. [2021-10-20 05:11:01,268 INFO L857 garLoopResultBuilder]: For program point L542-1(lines 40 585) no Hoare annotation was computed. [2021-10-20 05:11:01,268 INFO L857 garLoopResultBuilder]: For program point L278(lines 278 400) no Hoare annotation was computed. [2021-10-20 05:11:01,268 INFO L857 garLoopResultBuilder]: For program point L146(lines 146 400) no Hoare annotation was computed. [2021-10-20 05:11:01,268 INFO L857 garLoopResultBuilder]: For program point L213(lines 213 400) no Hoare annotation was computed. [2021-10-20 05:11:01,268 INFO L857 garLoopResultBuilder]: For program point L82(lines 82 400) no Hoare annotation was computed. [2021-10-20 05:11:01,269 INFO L857 garLoopResultBuilder]: For program point L545-1(lines 40 585) no Hoare annotation was computed. [2021-10-20 05:11:01,269 INFO L857 garLoopResultBuilder]: For program point L347(lines 347 400) no Hoare annotation was computed. [2021-10-20 05:11:01,269 INFO L857 garLoopResultBuilder]: For program point L248(lines 248 400) no Hoare annotation was computed. [2021-10-20 05:11:01,269 INFO L857 garLoopResultBuilder]: For program point L546(line 546) no Hoare annotation was computed. [2021-10-20 05:11:01,269 INFO L857 garLoopResultBuilder]: For program point L183(lines 183 400) no Hoare annotation was computed. [2021-10-20 05:11:01,269 INFO L857 garLoopResultBuilder]: For program point L150(lines 150 400) no Hoare annotation was computed. [2021-10-20 05:11:01,269 INFO L857 garLoopResultBuilder]: For program point L382(lines 382 400) no Hoare annotation was computed. [2021-10-20 05:11:01,269 INFO L857 garLoopResultBuilder]: For program point L316(lines 316 400) no Hoare annotation was computed. [2021-10-20 05:11:01,269 INFO L857 garLoopResultBuilder]: For program point L283(lines 283 400) no Hoare annotation was computed. [2021-10-20 05:11:01,269 INFO L857 garLoopResultBuilder]: For program point L118(lines 118 400) no Hoare annotation was computed. [2021-10-20 05:11:01,269 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-20 05:11:01,269 INFO L857 garLoopResultBuilder]: For program point L218(lines 218 400) no Hoare annotation was computed. [2021-10-20 05:11:01,270 INFO L857 garLoopResultBuilder]: For program point L53(lines 53 400) no Hoare annotation was computed. [2021-10-20 05:11:01,270 INFO L857 garLoopResultBuilder]: For program point L154(lines 154 400) no Hoare annotation was computed. [2021-10-20 05:11:01,270 INFO L853 garLoopResultBuilder]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse2 (<= 15 ~a8~0)) (.cse5 (<= ~a8~0 13)) (.cse7 (<= ~a17~0 0)) (.cse6 (<= ~a16~0 5)) (.cse3 (= ~a12~0 8)) (.cse0 (= ~a21~0 1)) (.cse1 (= ~a17~0 1)) (.cse4 (= ~a20~0 1))) (or (and .cse0 .cse1 .cse2) (and .cse3 (<= 6 ~a16~0) .cse0 .cse1 .cse4) (and .cse5 .cse6) (and .cse7 .cse0 .cse2) (and .cse5 .cse7 .cse4) (and .cse7 .cse0 .cse6) (and .cse3 .cse0 .cse1 (<= ~a16~0 4) .cse4))) [2021-10-20 05:11:01,270 INFO L857 garLoopResultBuilder]: For program point L188(lines 188 400) no Hoare annotation was computed. [2021-10-20 05:11:01,270 INFO L857 garLoopResultBuilder]: For program point L387(lines 387 400) no Hoare annotation was computed. [2021-10-20 05:11:01,270 INFO L857 garLoopResultBuilder]: For program point L288(lines 288 400) no Hoare annotation was computed. [2021-10-20 05:11:01,270 INFO L857 garLoopResultBuilder]: For program point L255(lines 255 400) no Hoare annotation was computed. [2021-10-20 05:11:01,270 INFO L857 garLoopResultBuilder]: For program point L90(lines 90 400) no Hoare annotation was computed. [2021-10-20 05:11:01,270 INFO L857 garLoopResultBuilder]: For program point L355(lines 355 400) no Hoare annotation was computed. [2021-10-20 05:11:01,271 INFO L857 garLoopResultBuilder]: For program point L322(lines 322 400) no Hoare annotation was computed. [2021-10-20 05:11:01,271 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-20 05:11:01,271 INFO L857 garLoopResultBuilder]: For program point L124(lines 124 400) no Hoare annotation was computed. [2021-10-20 05:11:01,271 INFO L860 garLoopResultBuilder]: At program point L587(lines 587 604) the Hoare annotation is: true [2021-10-20 05:11:01,271 INFO L857 garLoopResultBuilder]: For program point L224(lines 224 400) no Hoare annotation was computed. [2021-10-20 05:11:01,271 INFO L857 garLoopResultBuilder]: For program point L158(lines 158 400) no Hoare annotation was computed. [2021-10-20 05:11:01,271 INFO L857 garLoopResultBuilder]: For program point L59(lines 59 400) no Hoare annotation was computed. [2021-10-20 05:11:01,271 INFO L857 garLoopResultBuilder]: For program point L94(lines 94 400) no Hoare annotation was computed. [2021-10-20 05:11:01,271 INFO L857 garLoopResultBuilder]: For program point L392(lines 392 400) no Hoare annotation was computed. [2021-10-20 05:11:01,271 INFO L857 garLoopResultBuilder]: For program point L326(lines 326 400) no Hoare annotation was computed. [2021-10-20 05:11:01,271 INFO L857 garLoopResultBuilder]: For program point L260(lines 260 400) no Hoare annotation was computed. [2021-10-20 05:11:01,271 INFO L857 garLoopResultBuilder]: For program point L228(lines 228 400) no Hoare annotation was computed. [2021-10-20 05:11:01,272 INFO L857 garLoopResultBuilder]: For program point L162(lines 162 400) no Hoare annotation was computed. [2021-10-20 05:11:01,272 INFO L857 garLoopResultBuilder]: For program point L129(lines 129 400) no Hoare annotation was computed. [2021-10-20 05:11:01,272 INFO L857 garLoopResultBuilder]: For program point L328(lines 328 400) no Hoare annotation was computed. [2021-10-20 05:11:01,272 INFO L857 garLoopResultBuilder]: For program point L196(lines 196 400) no Hoare annotation was computed. [2021-10-20 05:11:01,272 INFO L857 garLoopResultBuilder]: For program point L64(lines 64 400) no Hoare annotation was computed. [2021-10-20 05:11:01,272 INFO L853 garLoopResultBuilder]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse2 (<= 15 ~a8~0)) (.cse5 (<= ~a8~0 13)) (.cse7 (<= ~a17~0 0)) (.cse6 (<= ~a16~0 5)) (.cse3 (= ~a12~0 8)) (.cse0 (= ~a21~0 1)) (.cse1 (= ~a17~0 1)) (.cse4 (= ~a20~0 1))) (or (and .cse0 .cse1 .cse2) (and .cse3 (<= 6 ~a16~0) .cse0 .cse1 .cse4) (and .cse5 .cse6) (and .cse7 .cse0 .cse2) (and .cse5 .cse7 .cse4) (and .cse7 .cse0 .cse6) (and .cse3 .cse0 .cse1 (<= ~a16~0 4) .cse4))) [2021-10-20 05:11:01,272 INFO L857 garLoopResultBuilder]: For program point L296(lines 296 400) no Hoare annotation was computed. [2021-10-20 05:11:01,272 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 546) no Hoare annotation was computed. [2021-10-20 05:11:01,272 INFO L857 garLoopResultBuilder]: For program point L363(lines 363 400) no Hoare annotation was computed. [2021-10-20 05:11:01,272 INFO L857 garLoopResultBuilder]: For program point L199(lines 199 400) no Hoare annotation was computed. [2021-10-20 05:11:01,273 INFO L857 garLoopResultBuilder]: For program point L365(lines 365 400) no Hoare annotation was computed. [2021-10-20 05:11:01,273 INFO L857 garLoopResultBuilder]: For program point L266(lines 266 400) no Hoare annotation was computed. [2021-10-20 05:11:01,273 INFO L857 garLoopResultBuilder]: For program point L233(lines 233 400) no Hoare annotation was computed. [2021-10-20 05:11:01,273 INFO L857 garLoopResultBuilder]: For program point L134(lines 134 400) no Hoare annotation was computed. [2021-10-20 05:11:01,281 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-20 05:11:01,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 05:11:01 BoogieIcfgContainer [2021-10-20 05:11:01,318 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-20 05:11:01,318 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-20 05:11:01,319 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-20 05:11:01,319 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-20 05:11:01,319 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:10:51" (3/4) ... [2021-10-20 05:11:01,322 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-20 05:11:01,353 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 107 nodes and edges [2021-10-20 05:11:01,354 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2021-10-20 05:11:01,356 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-20 05:11:01,358 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-20 05:11:01,504 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7db5b6-9160-4413-80bc-f3bdf1c914b9/bin/utaipan-tZwUujhuQw/witness.graphml [2021-10-20 05:11:01,504 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-20 05:11:01,506 INFO L168 Benchmark]: Toolchain (without parser) took 12437.36 ms. Allocated memory was 83.9 MB in the beginning and 222.3 MB in the end (delta: 138.4 MB). Free memory was 45.2 MB in the beginning and 88.6 MB in the end (delta: -43.4 MB). Peak memory consumption was 95.1 MB. Max. memory is 16.1 GB. [2021-10-20 05:11:01,506 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 83.9 MB. Free memory was 63.5 MB in the beginning and 63.5 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:11:01,507 INFO L168 Benchmark]: CACSL2BoogieTranslator took 735.55 ms. Allocated memory was 83.9 MB in the beginning and 104.9 MB in the end (delta: 21.0 MB). Free memory was 44.9 MB in the beginning and 63.7 MB in the end (delta: -18.7 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. [2021-10-20 05:11:01,508 INFO L168 Benchmark]: Boogie Procedure Inliner took 109.86 ms. Allocated memory is still 104.9 MB. Free memory was 63.7 MB in the beginning and 57.8 MB in the end (delta: 5.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-20 05:11:01,508 INFO L168 Benchmark]: Boogie Preprocessor took 63.52 ms. Allocated memory is still 104.9 MB. Free memory was 57.8 MB in the beginning and 53.5 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-20 05:11:01,508 INFO L168 Benchmark]: RCFGBuilder took 1795.09 ms. Allocated memory was 104.9 MB in the beginning and 153.1 MB in the end (delta: 48.2 MB). Free memory was 53.5 MB in the beginning and 105.9 MB in the end (delta: -52.4 MB). Peak memory consumption was 24.0 MB. Max. memory is 16.1 GB. [2021-10-20 05:11:01,509 INFO L168 Benchmark]: TraceAbstraction took 9535.66 ms. Allocated memory was 153.1 MB in the beginning and 222.3 MB in the end (delta: 69.2 MB). Free memory was 105.0 MB in the beginning and 104.3 MB in the end (delta: 654.6 kB). Peak memory consumption was 68.6 MB. Max. memory is 16.1 GB. [2021-10-20 05:11:01,509 INFO L168 Benchmark]: Witness Printer took 186.14 ms. Allocated memory is still 222.3 MB. Free memory was 104.3 MB in the beginning and 88.6 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-20 05:11:01,511 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 83.9 MB. Free memory was 63.5 MB in the beginning and 63.5 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 735.55 ms. Allocated memory was 83.9 MB in the beginning and 104.9 MB in the end (delta: 21.0 MB). Free memory was 44.9 MB in the beginning and 63.7 MB in the end (delta: -18.7 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 109.86 ms. Allocated memory is still 104.9 MB. Free memory was 63.7 MB in the beginning and 57.8 MB in the end (delta: 5.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 63.52 ms. Allocated memory is still 104.9 MB. Free memory was 57.8 MB in the beginning and 53.5 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1795.09 ms. Allocated memory was 104.9 MB in the beginning and 153.1 MB in the end (delta: 48.2 MB). Free memory was 53.5 MB in the beginning and 105.9 MB in the end (delta: -52.4 MB). Peak memory consumption was 24.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9535.66 ms. Allocated memory was 153.1 MB in the beginning and 222.3 MB in the end (delta: 69.2 MB). Free memory was 105.0 MB in the beginning and 104.3 MB in the end (delta: 654.6 kB). Peak memory consumption was 68.6 MB. Max. memory is 16.1 GB. * Witness Printer took 186.14 ms. Allocated memory is still 222.3 MB. Free memory was 104.3 MB in the beginning and 88.6 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 546]: 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: 9444.4ms, OverallIterations: 11, TraceHistogramMax: 5, EmptinessCheckTime: 69.1ms, AutomataDifference: 4044.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 427.9ms, InitialAbstractionConstructionTime: 12.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 576 SDtfs, 697 SDslu, 50 SDs, 0 SdLazy, 2624 SolverSat, 618 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2811.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 857 GetRequests, 836 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 99.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1068occurred in iteration=7, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 372.4ms AutomataMinimizationTime, 11 MinimizatonAttempts, 710 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 45 NumberOfFragments, 161 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1304 FormulaSimplificationTreeSizeReduction, 73.4ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 244 FormulaSimplificationTreeSizeReductionInter, 346.7ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 160.9ms SsaConstructionTime, 579.7ms SatisfiabilityAnalysisTime, 2859.9ms InterpolantComputationTime, 1687 NumberOfCodeBlocks, 1687 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 2085 ConstructedInterpolants, 0 QuantifiedInterpolants, 7091 SizeOfPredicates, 0 NumberOfNonLiveVariables, 919 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 15 InterpolantComputations, 13 PerfectInterpolantSequences, 1619/1772 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: (((((((a21 == 1 && a17 == 1) && 15 <= a8) || ((((a12 == 8 && 6 <= a16) && a21 == 1) && a17 == 1) && a20 == 1)) || (a8 <= 13 && a16 <= 5)) || ((a17 <= 0 && a21 == 1) && 15 <= a8)) || ((a8 <= 13 && a17 <= 0) && a20 == 1)) || ((a17 <= 0 && a21 == 1) && a16 <= 5)) || ((((a12 == 8 && a21 == 1) && a17 == 1) && a16 <= 4) && a20 == 1) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((((((a21 == 1 && a17 == 1) && 15 <= a8) || ((((a12 == 8 && 6 <= a16) && a21 == 1) && a17 == 1) && a20 == 1)) || (a8 <= 13 && a16 <= 5)) || ((a17 <= 0 && a21 == 1) && 15 <= a8)) || ((a8 <= 13 && a17 <= 0) && a20 == 1)) || ((a17 <= 0 && a21 == 1) && a16 <= 5)) || ((((a12 == 8 && a21 == 1) && a17 == 1) && a16 <= 4) && a20 == 1) RESULT: Ultimate proved your program to be correct! [2021-10-20 05:11:01,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7db5b6-9160-4413-80bc-f3bdf1c914b9/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...