./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label32.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_da17761e-34e8-4de6-91ac-a7d55d25179d/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da17761e-34e8-4de6-91ac-a7d55d25179d/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da17761e-34e8-4de6-91ac-a7d55d25179d/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da17761e-34e8-4de6-91ac-a7d55d25179d/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label32.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da17761e-34e8-4de6-91ac-a7d55d25179d/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da17761e-34e8-4de6-91ac-a7d55d25179d/bin/utaipan-9zjyvhn0QE --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 dfcc0c3466e0ad99a1193d0083cedd3fc450234fcd184acb12bef00501b42460 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 09:58:35,517 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 09:58:35,520 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 09:58:35,572 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 09:58:35,573 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 09:58:35,577 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 09:58:35,579 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 09:58:35,584 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 09:58:35,586 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 09:58:35,594 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 09:58:35,595 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 09:58:35,597 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 09:58:35,597 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 09:58:35,600 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 09:58:35,603 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 09:58:35,609 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 09:58:35,611 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 09:58:35,612 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 09:58:35,614 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 09:58:35,624 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 09:58:35,626 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 09:58:35,627 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 09:58:35,629 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 09:58:35,630 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 09:58:35,633 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 09:58:35,634 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 09:58:35,634 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 09:58:35,636 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 09:58:35,636 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 09:58:35,637 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 09:58:35,638 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 09:58:35,639 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 09:58:35,640 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 09:58:35,641 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 09:58:35,642 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 09:58:35,642 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 09:58:35,643 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 09:58:35,643 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 09:58:35,644 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 09:58:35,645 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 09:58:35,646 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 09:58:35,646 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da17761e-34e8-4de6-91ac-a7d55d25179d/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 09:58:35,673 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 09:58:35,673 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 09:58:35,674 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 09:58:35,674 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 09:58:35,674 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 09:58:35,675 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 09:58:35,675 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 09:58:35,675 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 09:58:35,675 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 09:58:35,676 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 09:58:35,676 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 09:58:35,676 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 09:58:35,676 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 09:58:35,677 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 09:58:35,677 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 09:58:35,678 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 09:58:35,678 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 09:58:35,678 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 09:58:35,678 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 09:58:35,679 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 09:58:35,679 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 09:58:35,679 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 09:58:35,679 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 09:58:35,680 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 09:58:35,680 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 09:58:35,680 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 09:58:35,680 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 09:58:35,681 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 09:58:35,681 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 09:58:35,681 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 09:58:35,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:58:35,682 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 09:58:35,682 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 09:58:35,682 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 09:58:35,683 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 09:58:35,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 09:58:35,683 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 09:58:35,683 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 09:58:35,684 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 09:58:35,684 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_da17761e-34e8-4de6-91ac-a7d55d25179d/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da17761e-34e8-4de6-91ac-a7d55d25179d/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dfcc0c3466e0ad99a1193d0083cedd3fc450234fcd184acb12bef00501b42460 [2021-10-24 09:58:35,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 09:58:35,952 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 09:58:35,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 09:58:35,955 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 09:58:35,956 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 09:58:35,957 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da17761e-34e8-4de6-91ac-a7d55d25179d/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/eca-rers2012/Problem02_label32.c [2021-10-24 09:58:36,033 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da17761e-34e8-4de6-91ac-a7d55d25179d/bin/utaipan-9zjyvhn0QE/data/fe3d36215/79db6b8102ed4fb1a6cd1a834d39b916/FLAG49da97b55 [2021-10-24 09:58:36,606 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 09:58:36,607 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da17761e-34e8-4de6-91ac-a7d55d25179d/sv-benchmarks/c/eca-rers2012/Problem02_label32.c [2021-10-24 09:58:36,617 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da17761e-34e8-4de6-91ac-a7d55d25179d/bin/utaipan-9zjyvhn0QE/data/fe3d36215/79db6b8102ed4fb1a6cd1a834d39b916/FLAG49da97b55 [2021-10-24 09:58:36,893 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da17761e-34e8-4de6-91ac-a7d55d25179d/bin/utaipan-9zjyvhn0QE/data/fe3d36215/79db6b8102ed4fb1a6cd1a834d39b916 [2021-10-24 09:58:36,895 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 09:58:36,897 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 09:58:36,901 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 09:58:36,901 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 09:58:36,904 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 09:58:36,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:58:36" (1/1) ... [2021-10-24 09:58:36,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a5a5802 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:58:36, skipping insertion in model container [2021-10-24 09:58:36,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:58:36" (1/1) ... [2021-10-24 09:58:36,915 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 09:58:36,978 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 09:58:37,320 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_da17761e-34e8-4de6-91ac-a7d55d25179d/sv-benchmarks/c/eca-rers2012/Problem02_label32.c[17811,17824] [2021-10-24 09:58:37,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:58:37,379 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 09:58:37,540 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_da17761e-34e8-4de6-91ac-a7d55d25179d/sv-benchmarks/c/eca-rers2012/Problem02_label32.c[17811,17824] [2021-10-24 09:58:37,555 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:58:37,570 INFO L208 MainTranslator]: Completed translation [2021-10-24 09:58:37,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:58:37 WrapperNode [2021-10-24 09:58:37,576 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 09:58:37,577 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 09:58:37,577 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 09:58:37,577 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 09:58:37,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:58:37" (1/1) ... [2021-10-24 09:58:37,609 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:58:37" (1/1) ... [2021-10-24 09:58:37,678 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 09:58:37,680 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 09:58:37,680 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 09:58:37,680 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 09:58:37,689 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:58:37" (1/1) ... [2021-10-24 09:58:37,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:58:37" (1/1) ... [2021-10-24 09:58:37,703 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:58:37" (1/1) ... [2021-10-24 09:58:37,703 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:58:37" (1/1) ... [2021-10-24 09:58:37,745 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:58:37" (1/1) ... [2021-10-24 09:58:37,767 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:58:37" (1/1) ... [2021-10-24 09:58:37,783 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:58:37" (1/1) ... [2021-10-24 09:58:37,791 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 09:58:37,802 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 09:58:37,802 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 09:58:37,802 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 09:58:37,803 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:58:37" (1/1) ... [2021-10-24 09:58:37,811 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:58:37,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da17761e-34e8-4de6-91ac-a7d55d25179d/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:58:37,837 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da17761e-34e8-4de6-91ac-a7d55d25179d/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 09:58:37,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da17761e-34e8-4de6-91ac-a7d55d25179d/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 09:58:37,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 09:58:37,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 09:58:37,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 09:58:37,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 09:58:39,775 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 09:58:39,776 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-24 09:58:39,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:58:39 BoogieIcfgContainer [2021-10-24 09:58:39,779 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 09:58:39,782 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 09:58:39,783 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 09:58:39,786 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 09:58:39,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:58:36" (1/3) ... [2021-10-24 09:58:39,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@523f13c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:58:39, skipping insertion in model container [2021-10-24 09:58:39,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:58:37" (2/3) ... [2021-10-24 09:58:39,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@523f13c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:58:39, skipping insertion in model container [2021-10-24 09:58:39,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:58:39" (3/3) ... [2021-10-24 09:58:39,791 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label32.c [2021-10-24 09:58:39,800 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 09:58:39,800 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 09:58:39,862 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 09:58:39,871 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 [2021-10-24 09:58:39,871 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-24 09:58:39,895 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:58:39,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-24 09:58:39,909 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:58:39,910 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:58:39,910 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:58:39,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:58:39,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1243324595, now seen corresponding path program 1 times [2021-10-24 09:58:39,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:58:39,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450036997] [2021-10-24 09:58:39,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:58:39,938 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:58:40,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:58:40,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:58:40,394 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:58:40,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450036997] [2021-10-24 09:58:40,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450036997] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:58:40,396 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:58:40,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 09:58:40,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576069817] [2021-10-24 09:58:40,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 09:58:40,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:58:40,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 09:58:40,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:58:40,429 INFO L87 Difference]: Start difference. First operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:58:40,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:58:40,897 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2021-10-24 09:58:40,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 09:58:40,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-10-24 09:58:40,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:58:40,916 INFO L225 Difference]: With dead ends: 251 [2021-10-24 09:58:40,916 INFO L226 Difference]: Without dead ends: 163 [2021-10-24 09:58:40,920 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:58:40,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-10-24 09:58:40,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-10-24 09:58:40,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.5617283950617284) internal successors, (253), 162 states have internal predecessors, (253), 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) [2021-10-24 09:58:40,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 253 transitions. [2021-10-24 09:58:40,984 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 253 transitions. Word has length 80 [2021-10-24 09:58:40,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:58:40,985 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 253 transitions. [2021-10-24 09:58:40,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:58:40,986 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 253 transitions. [2021-10-24 09:58:40,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-24 09:58:40,990 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:58:40,990 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:58:40,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 09:58:40,991 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:58:40,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:58:40,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1692947336, now seen corresponding path program 1 times [2021-10-24 09:58:40,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:58:40,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141419863] [2021-10-24 09:58:40,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:58:40,993 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:58:41,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:58:41,099 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:58:41,100 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:58:41,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141419863] [2021-10-24 09:58:41,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141419863] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:58:41,101 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:58:41,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 09:58:41,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781649981] [2021-10-24 09:58:41,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 09:58:41,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:58:41,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 09:58:41,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:58:41,104 INFO L87 Difference]: Start difference. First operand 163 states and 253 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) [2021-10-24 09:58:41,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:58:41,478 INFO L93 Difference]: Finished difference Result 405 states and 661 transitions. [2021-10-24 09:58:41,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 09:58:41,479 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 85 [2021-10-24 09:58:41,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:58:41,487 INFO L225 Difference]: With dead ends: 405 [2021-10-24 09:58:41,487 INFO L226 Difference]: Without dead ends: 243 [2021-10-24 09:58:41,489 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:58:41,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-10-24 09:58:41,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2021-10-24 09:58:41,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 1.4793388429752066) internal successors, (358), 242 states have internal predecessors, (358), 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) [2021-10-24 09:58:41,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 358 transitions. [2021-10-24 09:58:41,518 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 358 transitions. Word has length 85 [2021-10-24 09:58:41,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:58:41,518 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 358 transitions. [2021-10-24 09:58:41,519 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) [2021-10-24 09:58:41,519 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 358 transitions. [2021-10-24 09:58:41,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-24 09:58:41,534 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:58:41,534 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:58:41,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-24 09:58:41,535 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:58:41,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:58:41,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1724805233, now seen corresponding path program 1 times [2021-10-24 09:58:41,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:58:41,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615400447] [2021-10-24 09:58:41,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:58:41,541 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:58:41,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:58:41,645 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:58:41,645 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:58:41,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615400447] [2021-10-24 09:58:41,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615400447] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:58:41,646 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:58:41,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 09:58:41,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147207393] [2021-10-24 09:58:41,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 09:58:41,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:58:41,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 09:58:41,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:58:41,652 INFO L87 Difference]: Start difference. First operand 243 states and 358 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 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) [2021-10-24 09:58:42,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:58:42,040 INFO L93 Difference]: Finished difference Result 725 states and 1071 transitions. [2021-10-24 09:58:42,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 09:58:42,041 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-10-24 09:58:42,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:58:42,044 INFO L225 Difference]: With dead ends: 725 [2021-10-24 09:58:42,044 INFO L226 Difference]: Without dead ends: 483 [2021-10-24 09:58:42,046 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:58:42,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2021-10-24 09:58:42,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2021-10-24 09:58:42,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.396265560165975) internal successors, (673), 482 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:58:42,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 673 transitions. [2021-10-24 09:58:42,081 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 673 transitions. Word has length 95 [2021-10-24 09:58:42,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:58:42,082 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 673 transitions. [2021-10-24 09:58:42,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 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) [2021-10-24 09:58:42,083 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 673 transitions. [2021-10-24 09:58:42,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-10-24 09:58:42,086 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:58:42,086 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:58:42,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-24 09:58:42,087 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:58:42,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:58:42,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1523202786, now seen corresponding path program 1 times [2021-10-24 09:58:42,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:58:42,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208969482] [2021-10-24 09:58:42,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:58:42,088 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:58:42,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:58:42,142 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-24 09:58:42,143 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:58:42,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208969482] [2021-10-24 09:58:42,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208969482] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:58:42,144 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:58:42,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 09:58:42,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180337309] [2021-10-24 09:58:42,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 09:58:42,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:58:42,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 09:58:42,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:58:42,146 INFO L87 Difference]: Start difference. First operand 483 states and 673 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) 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) [2021-10-24 09:58:42,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:58:42,496 INFO L93 Difference]: Finished difference Result 1125 states and 1545 transitions. [2021-10-24 09:58:42,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 09:58:42,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) 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 124 [2021-10-24 09:58:42,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:58:42,501 INFO L225 Difference]: With dead ends: 1125 [2021-10-24 09:58:42,501 INFO L226 Difference]: Without dead ends: 563 [2021-10-24 09:58:42,504 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:58:42,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-10-24 09:58:42,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 563. [2021-10-24 09:58:42,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 562 states have (on average 1.2384341637010676) internal successors, (696), 562 states have internal predecessors, (696), 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) [2021-10-24 09:58:42,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 696 transitions. [2021-10-24 09:58:42,527 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 696 transitions. Word has length 124 [2021-10-24 09:58:42,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:58:42,528 INFO L470 AbstractCegarLoop]: Abstraction has 563 states and 696 transitions. [2021-10-24 09:58:42,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) 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) [2021-10-24 09:58:42,528 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 696 transitions. [2021-10-24 09:58:42,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-10-24 09:58:42,532 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:58:42,532 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:58:42,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-24 09:58:42,533 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:58:42,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:58:42,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1982697324, now seen corresponding path program 1 times [2021-10-24 09:58:42,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:58:42,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120666167] [2021-10-24 09:58:42,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:58:42,534 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:58:42,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:58:42,594 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-24 09:58:42,594 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:58:42,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120666167] [2021-10-24 09:58:42,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120666167] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:58:42,595 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:58:42,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 09:58:42,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66680240] [2021-10-24 09:58:42,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 09:58:42,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:58:42,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 09:58:42,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:58:42,597 INFO L87 Difference]: Start difference. First operand 563 states and 696 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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) [2021-10-24 09:58:42,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:58:42,926 INFO L93 Difference]: Finished difference Result 1605 states and 1990 transitions. [2021-10-24 09:58:42,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 09:58:42,927 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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 128 [2021-10-24 09:58:42,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:58:42,935 INFO L225 Difference]: With dead ends: 1605 [2021-10-24 09:58:42,935 INFO L226 Difference]: Without dead ends: 1043 [2021-10-24 09:58:42,936 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:58:42,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2021-10-24 09:58:42,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 963. [2021-10-24 09:58:42,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 1.208939708939709) internal successors, (1163), 962 states have internal predecessors, (1163), 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) [2021-10-24 09:58:42,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1163 transitions. [2021-10-24 09:58:42,978 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1163 transitions. Word has length 128 [2021-10-24 09:58:42,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:58:42,981 INFO L470 AbstractCegarLoop]: Abstraction has 963 states and 1163 transitions. [2021-10-24 09:58:42,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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) [2021-10-24 09:58:42,982 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1163 transitions. [2021-10-24 09:58:42,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-10-24 09:58:42,986 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:58:42,986 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-24 09:58:42,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-24 09:58:42,987 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:58:42,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:58:42,987 INFO L82 PathProgramCache]: Analyzing trace with hash 969100642, now seen corresponding path program 1 times [2021-10-24 09:58:42,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:58:42,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715294530] [2021-10-24 09:58:42,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:58:42,988 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:58:43,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:58:43,133 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:58:43,134 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:58:43,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715294530] [2021-10-24 09:58:43,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715294530] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:58:43,134 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:58:43,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 09:58:43,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252900720] [2021-10-24 09:58:43,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 09:58:43,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:58:43,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 09:58:43,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:58:43,141 INFO L87 Difference]: Start difference. First operand 963 states and 1163 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 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) [2021-10-24 09:58:43,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:58:43,471 INFO L93 Difference]: Finished difference Result 2727 states and 3303 transitions. [2021-10-24 09:58:43,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 09:58:43,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 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 [2021-10-24 09:58:43,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:58:43,483 INFO L225 Difference]: With dead ends: 2727 [2021-10-24 09:58:43,484 INFO L226 Difference]: Without dead ends: 1685 [2021-10-24 09:58:43,486 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:58:43,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2021-10-24 09:58:43,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1603. [2021-10-24 09:58:43,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1603 states, 1602 states have (on average 1.1853932584269662) internal successors, (1899), 1602 states have internal predecessors, (1899), 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) [2021-10-24 09:58:43,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1603 states to 1603 states and 1899 transitions. [2021-10-24 09:58:43,534 INFO L78 Accepts]: Start accepts. Automaton has 1603 states and 1899 transitions. Word has length 132 [2021-10-24 09:58:43,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:58:43,536 INFO L470 AbstractCegarLoop]: Abstraction has 1603 states and 1899 transitions. [2021-10-24 09:58:43,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 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) [2021-10-24 09:58:43,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1603 states and 1899 transitions. [2021-10-24 09:58:43,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-10-24 09:58:43,540 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:58:43,541 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-24 09:58:43,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-24 09:58:43,541 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:58:43,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:58:43,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1838722068, now seen corresponding path program 1 times [2021-10-24 09:58:43,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:58:43,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807823824] [2021-10-24 09:58:43,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:58:43,547 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:58:43,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:58:43,644 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-24 09:58:43,644 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:58:43,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807823824] [2021-10-24 09:58:43,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807823824] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:58:43,645 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:58:43,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 09:58:43,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768389005] [2021-10-24 09:58:43,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 09:58:43,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:58:43,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 09:58:43,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:58:43,647 INFO L87 Difference]: Start difference. First operand 1603 states and 1899 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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) [2021-10-24 09:58:43,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:58:43,975 INFO L93 Difference]: Finished difference Result 3685 states and 4433 transitions. [2021-10-24 09:58:43,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 09:58:43,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2021-10-24 09:58:43,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:58:43,988 INFO L225 Difference]: With dead ends: 3685 [2021-10-24 09:58:43,988 INFO L226 Difference]: Without dead ends: 2083 [2021-10-24 09:58:43,991 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:58:43,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2083 states. [2021-10-24 09:58:44,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2083 to 2083. [2021-10-24 09:58:44,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2083 states, 2082 states have (on average 1.175792507204611) internal successors, (2448), 2082 states have internal predecessors, (2448), 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) [2021-10-24 09:58:44,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2083 states to 2083 states and 2448 transitions. [2021-10-24 09:58:44,050 INFO L78 Accepts]: Start accepts. Automaton has 2083 states and 2448 transitions. Word has length 166 [2021-10-24 09:58:44,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:58:44,051 INFO L470 AbstractCegarLoop]: Abstraction has 2083 states and 2448 transitions. [2021-10-24 09:58:44,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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) [2021-10-24 09:58:44,052 INFO L276 IsEmpty]: Start isEmpty. Operand 2083 states and 2448 transitions. [2021-10-24 09:58:44,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-10-24 09:58:44,058 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:58:44,058 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:58:44,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-24 09:58:44,059 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:58:44,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:58:44,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1669221455, now seen corresponding path program 1 times [2021-10-24 09:58:44,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:58:44,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842890367] [2021-10-24 09:58:44,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:58:44,062 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:58:44,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:58:44,175 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-10-24 09:58:44,175 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:58:44,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842890367] [2021-10-24 09:58:44,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842890367] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:58:44,177 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:58:44,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 09:58:44,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108720836] [2021-10-24 09:58:44,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 09:58:44,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:58:44,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 09:58:44,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:58:44,179 INFO L87 Difference]: Start difference. First operand 2083 states and 2448 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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) [2021-10-24 09:58:44,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:58:44,513 INFO L93 Difference]: Finished difference Result 4565 states and 5353 transitions. [2021-10-24 09:58:44,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 09:58:44,514 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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 170 [2021-10-24 09:58:44,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:58:44,525 INFO L225 Difference]: With dead ends: 4565 [2021-10-24 09:58:44,525 INFO L226 Difference]: Without dead ends: 1843 [2021-10-24 09:58:44,528 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:58:44,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2021-10-24 09:58:44,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1843. [2021-10-24 09:58:44,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1843 states, 1842 states have (on average 1.1389793702497286) internal successors, (2098), 1842 states have internal predecessors, (2098), 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) [2021-10-24 09:58:44,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1843 states to 1843 states and 2098 transitions. [2021-10-24 09:58:44,578 INFO L78 Accepts]: Start accepts. Automaton has 1843 states and 2098 transitions. Word has length 170 [2021-10-24 09:58:44,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:58:44,579 INFO L470 AbstractCegarLoop]: Abstraction has 1843 states and 2098 transitions. [2021-10-24 09:58:44,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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) [2021-10-24 09:58:44,580 INFO L276 IsEmpty]: Start isEmpty. Operand 1843 states and 2098 transitions. [2021-10-24 09:58:44,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-10-24 09:58:44,585 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:58:44,585 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:58:44,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-24 09:58:44,586 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:58:44,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:58:44,586 INFO L82 PathProgramCache]: Analyzing trace with hash -140676704, now seen corresponding path program 1 times [2021-10-24 09:58:44,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:58:44,587 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927399124] [2021-10-24 09:58:44,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:58:44,587 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:58:44,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:58:44,666 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2021-10-24 09:58:44,666 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:58:44,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927399124] [2021-10-24 09:58:44,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927399124] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:58:44,668 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:58:44,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 09:58:44,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426620120] [2021-10-24 09:58:44,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 09:58:44,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:58:44,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 09:58:44,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:58:44,677 INFO L87 Difference]: Start difference. First operand 1843 states and 2098 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 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) [2021-10-24 09:58:44,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:58:44,842 INFO L93 Difference]: Finished difference Result 3285 states and 3744 transitions. [2021-10-24 09:58:44,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 09:58:44,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 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 178 [2021-10-24 09:58:44,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:58:44,852 INFO L225 Difference]: With dead ends: 3285 [2021-10-24 09:58:44,852 INFO L226 Difference]: Without dead ends: 1203 [2021-10-24 09:58:44,855 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:58:44,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2021-10-24 09:58:44,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 723. [2021-10-24 09:58:44,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 722 states have (on average 1.0941828254847645) internal successors, (790), 722 states have internal predecessors, (790), 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) [2021-10-24 09:58:44,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 790 transitions. [2021-10-24 09:58:44,876 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 790 transitions. Word has length 178 [2021-10-24 09:58:44,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:58:44,876 INFO L470 AbstractCegarLoop]: Abstraction has 723 states and 790 transitions. [2021-10-24 09:58:44,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 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) [2021-10-24 09:58:44,877 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 790 transitions. [2021-10-24 09:58:44,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-10-24 09:58:44,880 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:58:44,881 INFO L512 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:58:44,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-24 09:58:44,881 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:58:44,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:58:44,882 INFO L82 PathProgramCache]: Analyzing trace with hash 158813844, now seen corresponding path program 1 times [2021-10-24 09:58:44,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:58:44,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874750468] [2021-10-24 09:58:44,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:58:44,885 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:58:44,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:58:45,065 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2021-10-24 09:58:45,066 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:58:45,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874750468] [2021-10-24 09:58:45,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874750468] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:58:45,066 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:58:45,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 09:58:45,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710402153] [2021-10-24 09:58:45,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 09:58:45,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:58:45,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 09:58:45,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:58:45,069 INFO L87 Difference]: Start difference. First operand 723 states and 790 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:58:45,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:58:45,203 INFO L93 Difference]: Finished difference Result 723 states and 790 transitions. [2021-10-24 09:58:45,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 09:58:45,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2021-10-24 09:58:45,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:58:45,205 INFO L225 Difference]: With dead ends: 723 [2021-10-24 09:58:45,205 INFO L226 Difference]: Without dead ends: 0 [2021-10-24 09:58:45,206 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:58:45,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-24 09:58:45,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-24 09:58:45,207 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) [2021-10-24 09:58:45,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-24 09:58:45,211 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 215 [2021-10-24 09:58:45,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:58:45,212 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-24 09:58:45,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:58:45,212 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-24 09:58:45,212 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-24 09:58:45,215 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:58:45,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-24 09:58:45,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-24 09:58:45,222 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:58:45,254 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:58:45,255 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:58:45,517 INFO L857 garLoopResultBuilder]: For program point L301(lines 301 423) no Hoare annotation was computed. [2021-10-24 09:58:45,517 INFO L857 garLoopResultBuilder]: For program point L235(lines 235 423) no Hoare annotation was computed. [2021-10-24 09:58:45,518 INFO L857 garLoopResultBuilder]: For program point L169(lines 169 423) no Hoare annotation was computed. [2021-10-24 09:58:45,518 INFO L857 garLoopResultBuilder]: For program point L303(lines 303 423) no Hoare annotation was computed. [2021-10-24 09:58:45,518 INFO L857 garLoopResultBuilder]: For program point L105(lines 105 423) no Hoare annotation was computed. [2021-10-24 09:58:45,518 INFO L857 garLoopResultBuilder]: For program point L40(lines 40 423) no Hoare annotation was computed. [2021-10-24 09:58:45,518 INFO L857 garLoopResultBuilder]: For program point L371(lines 371 423) no Hoare annotation was computed. [2021-10-24 09:58:45,518 INFO L857 garLoopResultBuilder]: For program point L505-1(lines 39 608) no Hoare annotation was computed. [2021-10-24 09:58:45,518 INFO L857 garLoopResultBuilder]: For program point L307(lines 307 423) no Hoare annotation was computed. [2021-10-24 09:58:45,518 INFO L857 garLoopResultBuilder]: For program point L175(lines 175 423) no Hoare annotation was computed. [2021-10-24 09:58:45,519 INFO L857 garLoopResultBuilder]: For program point L109(lines 109 423) no Hoare annotation was computed. [2021-10-24 09:58:45,519 INFO L857 garLoopResultBuilder]: For program point L242(lines 242 423) no Hoare annotation was computed. [2021-10-24 09:58:45,519 INFO L857 garLoopResultBuilder]: For program point L45(lines 45 423) no Hoare annotation was computed. [2021-10-24 09:58:45,519 INFO L857 garLoopResultBuilder]: For program point L508-1(lines 39 608) no Hoare annotation was computed. [2021-10-24 09:58:45,519 INFO L857 garLoopResultBuilder]: For program point L244(lines 244 423) no Hoare annotation was computed. [2021-10-24 09:58:45,519 INFO L857 garLoopResultBuilder]: For program point L509(line 509) no Hoare annotation was computed. [2021-10-24 09:58:45,519 INFO L857 garLoopResultBuilder]: For program point L179(lines 179 423) no Hoare annotation was computed. [2021-10-24 09:58:45,519 INFO L857 garLoopResultBuilder]: For program point L378(lines 378 423) no Hoare annotation was computed. [2021-10-24 09:58:45,520 INFO L857 garLoopResultBuilder]: For program point L48(lines 48 423) no Hoare annotation was computed. [2021-10-24 09:58:45,520 INFO L857 garLoopResultBuilder]: For program point L247(lines 247 423) no Hoare annotation was computed. [2021-10-24 09:58:45,520 INFO L857 garLoopResultBuilder]: For program point L116(lines 116 423) no Hoare annotation was computed. [2021-10-24 09:58:45,520 INFO L857 garLoopResultBuilder]: For program point L52(lines 52 423) no Hoare annotation was computed. [2021-10-24 09:58:45,520 INFO L857 garLoopResultBuilder]: For program point L185(lines 185 423) no Hoare annotation was computed. [2021-10-24 09:58:45,520 INFO L857 garLoopResultBuilder]: For program point L385(lines 385 423) no Hoare annotation was computed. [2021-10-24 09:58:45,520 INFO L857 garLoopResultBuilder]: For program point L319(lines 319 423) no Hoare annotation was computed. [2021-10-24 09:58:45,520 INFO L857 garLoopResultBuilder]: For program point L189(lines 189 423) no Hoare annotation was computed. [2021-10-24 09:58:45,520 INFO L857 garLoopResultBuilder]: For program point L123(lines 123 423) no Hoare annotation was computed. [2021-10-24 09:58:45,521 INFO L857 garLoopResultBuilder]: For program point L57(lines 57 423) no Hoare annotation was computed. [2021-10-24 09:58:45,521 INFO L857 garLoopResultBuilder]: For program point L388(lines 388 423) no Hoare annotation was computed. [2021-10-24 09:58:45,521 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-24 09:58:45,521 INFO L857 garLoopResultBuilder]: For program point L390(lines 390 423) no Hoare annotation was computed. [2021-10-24 09:58:45,521 INFO L857 garLoopResultBuilder]: For program point L324(lines 324 423) no Hoare annotation was computed. [2021-10-24 09:58:45,521 INFO L857 garLoopResultBuilder]: For program point L258(lines 258 423) no Hoare annotation was computed. [2021-10-24 09:58:45,521 INFO L857 garLoopResultBuilder]: For program point L60(lines 60 423) no Hoare annotation was computed. [2021-10-24 09:58:45,521 INFO L857 garLoopResultBuilder]: For program point L195(lines 195 423) no Hoare annotation was computed. [2021-10-24 09:58:45,521 INFO L857 garLoopResultBuilder]: For program point L129(lines 129 423) no Hoare annotation was computed. [2021-10-24 09:58:45,522 INFO L857 garLoopResultBuilder]: For program point L64(lines 64 423) no Hoare annotation was computed. [2021-10-24 09:58:45,522 INFO L857 garLoopResultBuilder]: For program point L263(lines 263 423) no Hoare annotation was computed. [2021-10-24 09:58:45,522 INFO L857 garLoopResultBuilder]: For program point L197(lines 197 423) no Hoare annotation was computed. [2021-10-24 09:58:45,522 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 509) no Hoare annotation was computed. [2021-10-24 09:58:45,522 INFO L857 garLoopResultBuilder]: For program point L199(lines 199 423) no Hoare annotation was computed. [2021-10-24 09:58:45,522 INFO L857 garLoopResultBuilder]: For program point L133(lines 133 423) no Hoare annotation was computed. [2021-10-24 09:58:45,522 INFO L857 garLoopResultBuilder]: For program point L399(lines 399 423) no Hoare annotation was computed. [2021-10-24 09:58:45,522 INFO L857 garLoopResultBuilder]: For program point L201(lines 201 423) no Hoare annotation was computed. [2021-10-24 09:58:45,523 INFO L857 garLoopResultBuilder]: For program point L69(lines 69 423) no Hoare annotation was computed. [2021-10-24 09:58:45,523 INFO L857 garLoopResultBuilder]: For program point L269(lines 269 423) no Hoare annotation was computed. [2021-10-24 09:58:45,523 INFO L857 garLoopResultBuilder]: For program point L204(lines 204 423) no Hoare annotation was computed. [2021-10-24 09:58:45,523 INFO L857 garLoopResultBuilder]: For program point L271(lines 271 423) no Hoare annotation was computed. [2021-10-24 09:58:45,523 INFO L857 garLoopResultBuilder]: For program point L404(lines 404 423) no Hoare annotation was computed. [2021-10-24 09:58:45,523 INFO L857 garLoopResultBuilder]: For program point L338(lines 338 423) no Hoare annotation was computed. [2021-10-24 09:58:45,524 INFO L857 garLoopResultBuilder]: For program point L140(lines 140 423) no Hoare annotation was computed. [2021-10-24 09:58:45,524 INFO L857 garLoopResultBuilder]: For program point L75(lines 75 423) no Hoare annotation was computed. [2021-10-24 09:58:45,525 INFO L857 garLoopResultBuilder]: For program point L208(lines 208 423) no Hoare annotation was computed. [2021-10-24 09:58:45,525 INFO L857 garLoopResultBuilder]: For program point L341(lines 341 423) no Hoare annotation was computed. [2021-10-24 09:58:45,525 INFO L857 garLoopResultBuilder]: For program point L408(lines 408 423) no Hoare annotation was computed. [2021-10-24 09:58:45,525 INFO L857 garLoopResultBuilder]: For program point L144(lines 144 423) no Hoare annotation was computed. [2021-10-24 09:58:45,526 INFO L853 garLoopResultBuilder]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse0 (<= 9 ~a28~0)) (.cse5 (<= 10 ~a28~0)) (.cse7 (<= ~a17~0 8)) (.cse3 (<= ~a28~0 10)) (.cse1 (<= ~a17~0 7)) (.cse4 (= ~a25~0 1)) (.cse2 (= ~a11~0 0)) (.cse6 (= ~a19~0 1))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse0 .cse4 .cse1 .cse3) (and .cse5 .cse3 .cse6) (and .cse5 .cse1 .cse3) (and .cse4 .cse7 .cse6) (and (<= 8 ~a17~0) .cse7 .cse3) (and .cse1 .cse6) (and .cse4 .cse2 .cse6 (<= ~a28~0 7)))) [2021-10-24 09:58:45,526 INFO L857 garLoopResultBuilder]: For program point L79(lines 79 423) no Hoare annotation was computed. [2021-10-24 09:58:45,526 INFO L857 garLoopResultBuilder]: For program point L212(lines 212 423) no Hoare annotation was computed. [2021-10-24 09:58:45,526 INFO L860 garLoopResultBuilder]: At program point L610(lines 610 627) the Hoare annotation is: true [2021-10-24 09:58:45,526 INFO L857 garLoopResultBuilder]: For program point L412(lines 412 423) no Hoare annotation was computed. [2021-10-24 09:58:45,526 INFO L857 garLoopResultBuilder]: For program point L347(lines 347 423) no Hoare annotation was computed. [2021-10-24 09:58:45,527 INFO L857 garLoopResultBuilder]: For program point L149(lines 149 423) no Hoare annotation was computed. [2021-10-24 09:58:45,527 INFO L857 garLoopResultBuilder]: For program point L414(lines 414 423) no Hoare annotation was computed. [2021-10-24 09:58:45,527 INFO L857 garLoopResultBuilder]: For program point L84(lines 84 423) no Hoare annotation was computed. [2021-10-24 09:58:45,527 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-24 09:58:45,527 INFO L857 garLoopResultBuilder]: For program point L417(lines 417 423) no Hoare annotation was computed. [2021-10-24 09:58:45,527 INFO L857 garLoopResultBuilder]: For program point L153(lines 153 423) no Hoare annotation was computed. [2021-10-24 09:58:45,528 INFO L853 garLoopResultBuilder]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse0 (<= 9 ~a28~0)) (.cse5 (<= 10 ~a28~0)) (.cse7 (<= ~a17~0 8)) (.cse3 (<= ~a28~0 10)) (.cse1 (<= ~a17~0 7)) (.cse4 (= ~a25~0 1)) (.cse2 (= ~a11~0 0)) (.cse6 (= ~a19~0 1))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse0 .cse4 .cse1 .cse3) (and .cse5 .cse3 .cse6) (and .cse5 .cse1 .cse3) (and .cse4 .cse7 .cse6) (and (<= 8 ~a17~0) .cse7 .cse3) (and .cse1 .cse6) (and .cse4 .cse2 .cse6 (<= ~a28~0 7)))) [2021-10-24 09:58:45,528 INFO L857 garLoopResultBuilder]: For program point L286(lines 286 423) no Hoare annotation was computed. [2021-10-24 09:58:45,528 INFO L857 garLoopResultBuilder]: For program point L419(lines 419 423) no Hoare annotation was computed. [2021-10-24 09:58:45,528 INFO L857 garLoopResultBuilder]: For program point L222(lines 222 423) no Hoare annotation was computed. [2021-10-24 09:58:45,528 INFO L857 garLoopResultBuilder]: For program point L290(lines 290 423) no Hoare annotation was computed. [2021-10-24 09:58:45,529 INFO L857 garLoopResultBuilder]: For program point L158(lines 158 423) no Hoare annotation was computed. [2021-10-24 09:58:45,529 INFO L857 garLoopResultBuilder]: For program point L92(lines 92 423) no Hoare annotation was computed. [2021-10-24 09:58:45,529 INFO L857 garLoopResultBuilder]: For program point L621(line 621) no Hoare annotation was computed. [2021-10-24 09:58:45,529 INFO L857 garLoopResultBuilder]: For program point L225(lines 225 423) no Hoare annotation was computed. [2021-10-24 09:58:45,529 INFO L857 garLoopResultBuilder]: For program point L359(lines 359 423) no Hoare annotation was computed. [2021-10-24 09:58:45,529 INFO L857 garLoopResultBuilder]: For program point L293(lines 293 423) no Hoare annotation was computed. [2021-10-24 09:58:45,530 INFO L857 garLoopResultBuilder]: For program point L228(lines 228 423) no Hoare annotation was computed. [2021-10-24 09:58:45,530 INFO L857 garLoopResultBuilder]: For program point L296(lines 296 423) no Hoare annotation was computed. [2021-10-24 09:58:45,530 INFO L857 garLoopResultBuilder]: For program point L164(lines 164 423) no Hoare annotation was computed. [2021-10-24 09:58:45,530 INFO L857 garLoopResultBuilder]: For program point L364(lines 364 423) no Hoare annotation was computed. [2021-10-24 09:58:45,530 INFO L857 garLoopResultBuilder]: For program point L233(lines 233 423) no Hoare annotation was computed. [2021-10-24 09:58:45,530 INFO L857 garLoopResultBuilder]: For program point L101(lines 101 423) no Hoare annotation was computed. [2021-10-24 09:58:45,535 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 09:58:45,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:58:45 BoogieIcfgContainer [2021-10-24 09:58:45,551 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 09:58:45,552 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 09:58:45,552 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 09:58:45,552 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 09:58:45,553 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:58:39" (3/4) ... [2021-10-24 09:58:45,556 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-24 09:58:45,577 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 114 nodes and edges [2021-10-24 09:58:45,579 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2021-10-24 09:58:45,580 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-24 09:58:45,582 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-24 09:58:45,720 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da17761e-34e8-4de6-91ac-a7d55d25179d/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 09:58:45,720 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 09:58:45,723 INFO L168 Benchmark]: Toolchain (without parser) took 8824.66 ms. Allocated memory was 98.6 MB in the beginning and 220.2 MB in the end (delta: 121.6 MB). Free memory was 60.9 MB in the beginning and 121.3 MB in the end (delta: -60.3 MB). Peak memory consumption was 62.0 MB. Max. memory is 16.1 GB. [2021-10-24 09:58:45,723 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 98.6 MB. Free memory is still 79.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:58:45,724 INFO L168 Benchmark]: CACSL2BoogieTranslator took 675.49 ms. Allocated memory is still 98.6 MB. Free memory was 60.7 MB in the beginning and 56.0 MB in the end (delta: 4.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 09:58:45,724 INFO L168 Benchmark]: Boogie Procedure Inliner took 101.66 ms. Allocated memory is still 98.6 MB. Free memory was 56.0 MB in the beginning and 50.7 MB in the end (delta: 5.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-24 09:58:45,725 INFO L168 Benchmark]: Boogie Preprocessor took 121.16 ms. Allocated memory is still 98.6 MB. Free memory was 50.5 MB in the beginning and 46.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-24 09:58:45,725 INFO L168 Benchmark]: RCFGBuilder took 1977.78 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 46.2 MB in the beginning and 79.1 MB in the end (delta: -32.8 MB). Peak memory consumption was 31.2 MB. Max. memory is 16.1 GB. [2021-10-24 09:58:45,725 INFO L168 Benchmark]: TraceAbstraction took 5769.03 ms. Allocated memory was 119.5 MB in the beginning and 220.2 MB in the end (delta: 100.7 MB). Free memory was 78.2 MB in the beginning and 136.0 MB in the end (delta: -57.7 MB). Peak memory consumption was 43.6 MB. Max. memory is 16.1 GB. [2021-10-24 09:58:45,726 INFO L168 Benchmark]: Witness Printer took 168.72 ms. Allocated memory is still 220.2 MB. Free memory was 136.0 MB in the beginning and 121.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-24 09:58:45,729 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 98.6 MB. Free memory is still 79.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 675.49 ms. Allocated memory is still 98.6 MB. Free memory was 60.7 MB in the beginning and 56.0 MB in the end (delta: 4.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 101.66 ms. Allocated memory is still 98.6 MB. Free memory was 56.0 MB in the beginning and 50.7 MB in the end (delta: 5.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 121.16 ms. Allocated memory is still 98.6 MB. Free memory was 50.5 MB in the beginning and 46.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1977.78 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 46.2 MB in the beginning and 79.1 MB in the end (delta: -32.8 MB). Peak memory consumption was 31.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5769.03 ms. Allocated memory was 119.5 MB in the beginning and 220.2 MB in the end (delta: 100.7 MB). Free memory was 78.2 MB in the beginning and 136.0 MB in the end (delta: -57.7 MB). Peak memory consumption was 43.6 MB. Max. memory is 16.1 GB. * Witness Printer took 168.72 ms. Allocated memory is still 220.2 MB. Free memory was 136.0 MB in the beginning and 121.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 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: 509]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5674.6ms, OverallIterations: 10, TraceHistogramMax: 7, EmptinessCheckTime: 66.7ms, AutomataDifference: 3359.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 300.5ms, InitialAbstractionConstructionTime: 19.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 699 SDtfs, 497 SDslu, 42 SDs, 0 SdLazy, 1992 SolverSat, 523 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2172.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=2083occurred in iteration=7, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 360.0ms AutomataMinimizationTime, 10 MinimizatonAttempts, 642 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 49 NumberOfFragments, 175 HoareAnnotationTreeSize, 3 FomulaSimplifications, 670 FormulaSimplificationTreeSizeReduction, 64.8ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 126 FormulaSimplificationTreeSizeReductionInter, 227.4ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 102.0ms SsaConstructionTime, 354.8ms SatisfiabilityAnalysisTime, 840.4ms InterpolantComputationTime, 1373 NumberOfCodeBlocks, 1373 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1363 ConstructedInterpolants, 0 QuantifiedInterpolants, 2607 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 947/947 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: (((((((((9 <= a28 && a17 <= 7) && a11 == 0) && a28 <= 10) || (((9 <= a28 && a25 == 1) && a17 <= 7) && a28 <= 10)) || ((10 <= a28 && a28 <= 10) && a19 == 1)) || ((10 <= a28 && a17 <= 7) && a28 <= 10)) || ((a25 == 1 && a17 <= 8) && a19 == 1)) || ((8 <= a17 && a17 <= 8) && a28 <= 10)) || (a17 <= 7 && a19 == 1)) || (((a25 == 1 && a11 == 0) && a19 == 1) && a28 <= 7) - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: (((((((((9 <= a28 && a17 <= 7) && a11 == 0) && a28 <= 10) || (((9 <= a28 && a25 == 1) && a17 <= 7) && a28 <= 10)) || ((10 <= a28 && a28 <= 10) && a19 == 1)) || ((10 <= a28 && a17 <= 7) && a28 <= 10)) || ((a25 == 1 && a17 <= 8) && a19 == 1)) || ((8 <= a17 && a17 <= 8) && a28 <= 10)) || (a17 <= 7 && a19 == 1)) || (((a25 == 1 && a11 == 0) && a19 == 1) && a28 <= 7) RESULT: Ultimate proved your program to be correct! [2021-10-24 09:58:45,793 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da17761e-34e8-4de6-91ac-a7d55d25179d/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...