./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label00.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dd17d11-8d2e-45af-90cb-c88959aad5b3/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dd17d11-8d2e-45af-90cb-c88959aad5b3/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dd17d11-8d2e-45af-90cb-c88959aad5b3/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dd17d11-8d2e-45af-90cb-c88959aad5b3/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label00.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dd17d11-8d2e-45af-90cb-c88959aad5b3/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dd17d11-8d2e-45af-90cb-c88959aad5b3/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2bca315e83f3e404b0e19c30f2a2a6ccd3138047241e2a3074cd921904dce242 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:56:22,769 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:56:22,771 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:56:22,801 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:56:22,802 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:56:22,803 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:56:22,805 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:56:22,807 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:56:22,809 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:56:22,811 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:56:22,812 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:56:22,813 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:56:22,814 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:56:22,815 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:56:22,817 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:56:22,818 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:56:22,820 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:56:22,821 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:56:22,823 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:56:22,825 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:56:22,827 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:56:22,829 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:56:22,831 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:56:22,832 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:56:22,835 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:56:22,836 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:56:22,836 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:56:22,837 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:56:22,838 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:56:22,839 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:56:22,840 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:56:22,841 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:56:22,842 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:56:22,843 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:56:22,844 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:56:22,845 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:56:22,845 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:56:22,846 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:56:22,846 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:56:22,847 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:56:22,848 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:56:22,851 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dd17d11-8d2e-45af-90cb-c88959aad5b3/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 19:56:22,889 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:56:22,891 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:56:22,892 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:56:22,892 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:56:22,894 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:56:22,900 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:56:22,900 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:56:22,900 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:56:22,900 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:56:22,901 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:56:22,902 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:56:22,902 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:56:22,902 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:56:22,902 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:56:22,903 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:56:22,903 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:56:22,903 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:56:22,903 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:56:22,904 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:56:22,904 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:56:22,905 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:56:22,905 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:56:22,905 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:56:22,905 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:56:22,906 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:56:22,906 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:56:22,907 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:56:22,908 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:56:22,908 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:56:22,908 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:56:22,908 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:56:22,909 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:56:22,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:56:22,909 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:56:22,909 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:56:22,910 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:56:22,910 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:56:22,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:56:22,910 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:56:22,911 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:56:22,911 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:56:22,911 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_3dd17d11-8d2e-45af-90cb-c88959aad5b3/bin/utaipan-eEHZpOm5b7/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dd17d11-8d2e-45af-90cb-c88959aad5b3/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2bca315e83f3e404b0e19c30f2a2a6ccd3138047241e2a3074cd921904dce242 [2021-11-25 19:56:23,221 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:56:23,243 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:56:23,246 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:56:23,247 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:56:23,248 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:56:23,249 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dd17d11-8d2e-45af-90cb-c88959aad5b3/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/eca-rers2012/Problem02_label00.c [2021-11-25 19:56:23,322 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dd17d11-8d2e-45af-90cb-c88959aad5b3/bin/utaipan-eEHZpOm5b7/data/53fa0c00d/47c1f465bd8342959c9764b169be5581/FLAG1cf0bedd6 [2021-11-25 19:56:23,865 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:56:23,866 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dd17d11-8d2e-45af-90cb-c88959aad5b3/sv-benchmarks/c/eca-rers2012/Problem02_label00.c [2021-11-25 19:56:23,895 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dd17d11-8d2e-45af-90cb-c88959aad5b3/bin/utaipan-eEHZpOm5b7/data/53fa0c00d/47c1f465bd8342959c9764b169be5581/FLAG1cf0bedd6 [2021-11-25 19:56:24,302 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dd17d11-8d2e-45af-90cb-c88959aad5b3/bin/utaipan-eEHZpOm5b7/data/53fa0c00d/47c1f465bd8342959c9764b169be5581 [2021-11-25 19:56:24,304 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:56:24,308 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:56:24,311 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:56:24,312 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:56:24,315 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:56:24,315 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:56:24" (1/1) ... [2021-11-25 19:56:24,317 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36c67721 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:56:24, skipping insertion in model container [2021-11-25 19:56:24,317 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:56:24" (1/1) ... [2021-11-25 19:56:24,324 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:56:24,385 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:56:24,741 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dd17d11-8d2e-45af-90cb-c88959aad5b3/sv-benchmarks/c/eca-rers2012/Problem02_label00.c[18487,18500] [2021-11-25 19:56:24,795 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:56:24,803 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:56:24,877 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dd17d11-8d2e-45af-90cb-c88959aad5b3/sv-benchmarks/c/eca-rers2012/Problem02_label00.c[18487,18500] [2021-11-25 19:56:24,889 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:56:24,903 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:56:24,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:56:24 WrapperNode [2021-11-25 19:56:24,904 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:56:24,905 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:56:24,905 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:56:24,905 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:56:24,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:56:24" (1/1) ... [2021-11-25 19:56:24,936 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:56:24" (1/1) ... [2021-11-25 19:56:25,013 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 668 [2021-11-25 19:56:25,021 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:56:25,022 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:56:25,022 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:56:25,023 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:56:25,029 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:56:24" (1/1) ... [2021-11-25 19:56:25,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:56:24" (1/1) ... [2021-11-25 19:56:25,034 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:56:24" (1/1) ... [2021-11-25 19:56:25,034 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:56:24" (1/1) ... [2021-11-25 19:56:25,058 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:56:24" (1/1) ... [2021-11-25 19:56:25,068 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:56:24" (1/1) ... [2021-11-25 19:56:25,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:56:24" (1/1) ... [2021-11-25 19:56:25,084 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:56:25,099 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:56:25,099 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:56:25,099 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:56:25,100 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:56:24" (1/1) ... [2021-11-25 19:56:25,108 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:56:25,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dd17d11-8d2e-45af-90cb-c88959aad5b3/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:56:25,140 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dd17d11-8d2e-45af-90cb-c88959aad5b3/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:56:25,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dd17d11-8d2e-45af-90cb-c88959aad5b3/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:56:25,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:56:25,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:56:25,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:56:25,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:56:25,282 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:56:25,284 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:56:26,113 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:56:26,377 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:56:26,377 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 19:56:26,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:56:26 BoogieIcfgContainer [2021-11-25 19:56:26,381 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:56:26,383 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:56:26,383 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:56:26,387 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:56:26,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:56:24" (1/3) ... [2021-11-25 19:56:26,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c698aac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:56:26, skipping insertion in model container [2021-11-25 19:56:26,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:56:24" (2/3) ... [2021-11-25 19:56:26,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c698aac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:56:26, skipping insertion in model container [2021-11-25 19:56:26,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:56:26" (3/3) ... [2021-11-25 19:56:26,390 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label00.c [2021-11-25 19:56:26,398 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:56:26,398 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:56:26,461 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:56:26,471 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 19:56:26,471 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 19:56:26,499 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:56:26,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-25 19:56:26,509 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:56:26,509 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:56:26,510 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:56:26,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:56:26,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1814580247, now seen corresponding path program 1 times [2021-11-25 19:56:26,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:56:26,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844713094] [2021-11-25 19:56:26,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:56:26,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:56:26,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:56:26,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:56:26,911 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:56:26,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844713094] [2021-11-25 19:56:26,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844713094] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:56:26,912 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:56:26,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:56:26,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155202312] [2021-11-25 19:56:26,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:56:26,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:56:26,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:56:26,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:56:26,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:56:26,968 INFO L87 Difference]: Start difference. First operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:56:27,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:56:27,363 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2021-11-25 19:56:27,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:56:27,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-25 19:56:27,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:56:27,377 INFO L225 Difference]: With dead ends: 251 [2021-11-25 19:56:27,377 INFO L226 Difference]: Without dead ends: 163 [2021-11-25 19:56:27,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:56:27,383 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 16 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:56:27,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 29 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 19:56:27,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-11-25 19:56:27,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-11-25 19:56:27,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.808641975308642) internal successors, (293), 162 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:56:27,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 293 transitions. [2021-11-25 19:56:27,437 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 293 transitions. Word has length 80 [2021-11-25 19:56:27,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:56:27,439 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 293 transitions. [2021-11-25 19:56:27,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:56:27,440 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 293 transitions. [2021-11-25 19:56:27,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-25 19:56:27,446 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:56:27,447 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:56:27,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:56:27,448 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:56:27,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:56:27,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1153876202, now seen corresponding path program 1 times [2021-11-25 19:56:27,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:56:27,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208219564] [2021-11-25 19:56:27,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:56:27,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:56:27,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:56:27,559 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:56:27,559 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:56:27,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208219564] [2021-11-25 19:56:27,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208219564] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:56:27,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:56:27,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:56:27,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597809926] [2021-11-25 19:56:27,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:56:27,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:56:27,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:56:27,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:56:27,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:56:27,566 INFO L87 Difference]: Start difference. First operand 163 states and 293 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:56:28,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:56:28,012 INFO L93 Difference]: Finished difference Result 485 states and 876 transitions. [2021-11-25 19:56:28,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:56:28,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 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 88 [2021-11-25 19:56:28,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:56:28,020 INFO L225 Difference]: With dead ends: 485 [2021-11-25 19:56:28,020 INFO L226 Difference]: Without dead ends: 323 [2021-11-25 19:56:28,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:56:28,027 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 75 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:56:28,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 62 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 19:56:28,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-11-25 19:56:28,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2021-11-25 19:56:28,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 322 states have (on average 1.5031055900621118) internal successors, (484), 322 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:56:28,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 484 transitions. [2021-11-25 19:56:28,079 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 484 transitions. Word has length 88 [2021-11-25 19:56:28,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:56:28,082 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 484 transitions. [2021-11-25 19:56:28,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:56:28,083 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 484 transitions. [2021-11-25 19:56:28,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-25 19:56:28,091 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:56:28,091 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:56:28,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 19:56:28,092 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:56:28,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:56:28,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1787474428, now seen corresponding path program 1 times [2021-11-25 19:56:28,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:56:28,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203797971] [2021-11-25 19:56:28,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:56:28,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:56:28,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:56:28,282 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:56:28,283 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:56:28,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203797971] [2021-11-25 19:56:28,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203797971] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:56:28,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:56:28,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:56:28,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987810643] [2021-11-25 19:56:28,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:56:28,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:56:28,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:56:28,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:56:28,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:56:28,286 INFO L87 Difference]: Start difference. First operand 323 states and 484 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:56:28,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:56:28,646 INFO L93 Difference]: Finished difference Result 965 states and 1449 transitions. [2021-11-25 19:56:28,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:56:28,646 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 89 [2021-11-25 19:56:28,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:56:28,651 INFO L225 Difference]: With dead ends: 965 [2021-11-25 19:56:28,651 INFO L226 Difference]: Without dead ends: 643 [2021-11-25 19:56:28,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:56:28,655 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 13 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:56:28,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 167 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:56:28,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-11-25 19:56:28,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 563. [2021-11-25 19:56:28,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 562 states have (on average 1.4572953736654803) internal successors, (819), 562 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:56:28,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 819 transitions. [2021-11-25 19:56:28,676 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 819 transitions. Word has length 89 [2021-11-25 19:56:28,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:56:28,677 INFO L470 AbstractCegarLoop]: Abstraction has 563 states and 819 transitions. [2021-11-25 19:56:28,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:56:28,677 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 819 transitions. [2021-11-25 19:56:28,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-25 19:56:28,682 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:56:28,682 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:56:28,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 19:56:28,683 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:56:28,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:56:28,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1696189147, now seen corresponding path program 1 times [2021-11-25 19:56:28,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:56:28,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974325619] [2021-11-25 19:56:28,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:56:28,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:56:28,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:56:28,751 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:56:28,752 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:56:28,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974325619] [2021-11-25 19:56:28,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974325619] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:56:28,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:56:28,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:56:28,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650792530] [2021-11-25 19:56:28,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:56:28,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:56:28,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:56:28,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:56:28,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:56:28,755 INFO L87 Difference]: Start difference. First operand 563 states and 819 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:56:29,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:56:29,107 INFO L93 Difference]: Finished difference Result 1605 states and 2358 transitions. [2021-11-25 19:56:29,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:56:29,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-25 19:56:29,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:56:29,114 INFO L225 Difference]: With dead ends: 1605 [2021-11-25 19:56:29,114 INFO L226 Difference]: Without dead ends: 1043 [2021-11-25 19:56:29,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:56:29,117 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 111 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:56:29,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 28 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:56:29,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2021-11-25 19:56:29,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1043. [2021-11-25 19:56:29,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1043 states, 1042 states have (on average 1.3915547024952015) internal successors, (1450), 1042 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:56:29,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1450 transitions. [2021-11-25 19:56:29,145 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1450 transitions. Word has length 90 [2021-11-25 19:56:29,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:56:29,146 INFO L470 AbstractCegarLoop]: Abstraction has 1043 states and 1450 transitions. [2021-11-25 19:56:29,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:56:29,146 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1450 transitions. [2021-11-25 19:56:29,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-25 19:56:29,149 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:56:29,149 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:56:29,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 19:56:29,149 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:56:29,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:56:29,150 INFO L85 PathProgramCache]: Analyzing trace with hash -699174855, now seen corresponding path program 1 times [2021-11-25 19:56:29,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:56:29,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29274863] [2021-11-25 19:56:29,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:56:29,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:56:29,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:56:29,238 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-25 19:56:29,238 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:56:29,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29274863] [2021-11-25 19:56:29,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29274863] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:56:29,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108395465] [2021-11-25 19:56:29,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:56:29,240 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:56:29,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dd17d11-8d2e-45af-90cb-c88959aad5b3/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:56:29,255 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dd17d11-8d2e-45af-90cb-c88959aad5b3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:56:29,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dd17d11-8d2e-45af-90cb-c88959aad5b3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 19:56:29,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:56:29,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 19:56:29,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:56:29,648 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-25 19:56:29,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:56:29,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108395465] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:56:29,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:56:29,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2021-11-25 19:56:29,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139028302] [2021-11-25 19:56:29,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:56:29,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:56:29,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:56:29,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:56:29,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:56:29,655 INFO L87 Difference]: Start difference. First operand 1043 states and 1450 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:56:30,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:56:30,028 INFO L93 Difference]: Finished difference Result 2645 states and 3697 transitions. [2021-11-25 19:56:30,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:56:30,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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 93 [2021-11-25 19:56:30,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:56:30,038 INFO L225 Difference]: With dead ends: 2645 [2021-11-25 19:56:30,038 INFO L226 Difference]: Without dead ends: 1523 [2021-11-25 19:56:30,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:56:30,041 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 42 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:56:30,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 41 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:56:30,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2021-11-25 19:56:30,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1523. [2021-11-25 19:56:30,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1522 states have (on average 1.3515111695137976) internal successors, (2057), 1522 states have internal predecessors, (2057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:56:30,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 2057 transitions. [2021-11-25 19:56:30,077 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 2057 transitions. Word has length 93 [2021-11-25 19:56:30,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:56:30,078 INFO L470 AbstractCegarLoop]: Abstraction has 1523 states and 2057 transitions. [2021-11-25 19:56:30,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:56:30,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 2057 transitions. [2021-11-25 19:56:30,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-25 19:56:30,081 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:56:30,081 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 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] [2021-11-25 19:56:30,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dd17d11-8d2e-45af-90cb-c88959aad5b3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 19:56:30,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dd17d11-8d2e-45af-90cb-c88959aad5b3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:56:30,295 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:56:30,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:56:30,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1651157294, now seen corresponding path program 1 times [2021-11-25 19:56:30,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:56:30,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61773736] [2021-11-25 19:56:30,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:56:30,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:56:30,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:56:30,339 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-25 19:56:30,339 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:56:30,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61773736] [2021-11-25 19:56:30,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61773736] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:56:30,340 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:56:30,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:56:30,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101655784] [2021-11-25 19:56:30,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:56:30,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:56:30,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:56:30,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:56:30,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:56:30,342 INFO L87 Difference]: Start difference. First operand 1523 states and 2057 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:56:30,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:56:30,702 INFO L93 Difference]: Finished difference Result 3445 states and 4740 transitions. [2021-11-25 19:56:30,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:56:30,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-25 19:56:30,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:56:30,713 INFO L225 Difference]: With dead ends: 3445 [2021-11-25 19:56:30,714 INFO L226 Difference]: Without dead ends: 1923 [2021-11-25 19:56:30,715 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:56:30,716 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 77 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:56:30,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 139 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:56:30,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1923 states. [2021-11-25 19:56:30,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1923 to 1843. [2021-11-25 19:56:30,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1843 states, 1842 states have (on average 1.3165038002171552) internal successors, (2425), 1842 states have internal predecessors, (2425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:56:30,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1843 states to 1843 states and 2425 transitions. [2021-11-25 19:56:30,765 INFO L78 Accepts]: Start accepts. Automaton has 1843 states and 2425 transitions. Word has length 97 [2021-11-25 19:56:30,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:56:30,765 INFO L470 AbstractCegarLoop]: Abstraction has 1843 states and 2425 transitions. [2021-11-25 19:56:30,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:56:30,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1843 states and 2425 transitions. [2021-11-25 19:56:30,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-25 19:56:30,769 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:56:30,769 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:56:30,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 19:56:30,770 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:56:30,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:56:30,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1105133976, now seen corresponding path program 1 times [2021-11-25 19:56:30,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:56:30,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765122415] [2021-11-25 19:56:30,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:56:30,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:56:30,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:56:30,828 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:56:30,829 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:56:30,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765122415] [2021-11-25 19:56:30,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765122415] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:56:30,829 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:56:30,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:56:30,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573606306] [2021-11-25 19:56:30,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:56:30,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:56:30,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:56:30,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:56:30,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:56:30,831 INFO L87 Difference]: Start difference. First operand 1843 states and 2425 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:56:31,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:56:31,182 INFO L93 Difference]: Finished difference Result 4005 states and 5238 transitions. [2021-11-25 19:56:31,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:56:31,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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 109 [2021-11-25 19:56:31,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:56:31,194 INFO L225 Difference]: With dead ends: 4005 [2021-11-25 19:56:31,194 INFO L226 Difference]: Without dead ends: 2163 [2021-11-25 19:56:31,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:56:31,200 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 77 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:56:31,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 25 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:56:31,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2163 states. [2021-11-25 19:56:31,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2163 to 2163. [2021-11-25 19:56:31,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2163 states, 2162 states have (on average 1.2645698427382053) internal successors, (2734), 2162 states have internal predecessors, (2734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:56:31,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2163 states to 2163 states and 2734 transitions. [2021-11-25 19:56:31,253 INFO L78 Accepts]: Start accepts. Automaton has 2163 states and 2734 transitions. Word has length 109 [2021-11-25 19:56:31,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:56:31,253 INFO L470 AbstractCegarLoop]: Abstraction has 2163 states and 2734 transitions. [2021-11-25 19:56:31,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:56:31,254 INFO L276 IsEmpty]: Start isEmpty. Operand 2163 states and 2734 transitions. [2021-11-25 19:56:31,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-25 19:56:31,260 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:56:31,261 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:56:31,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 19:56:31,261 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:56:31,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:56:31,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1445120881, now seen corresponding path program 1 times [2021-11-25 19:56:31,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:56:31,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773741117] [2021-11-25 19:56:31,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:56:31,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:56:31,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:56:31,320 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-25 19:56:31,320 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:56:31,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773741117] [2021-11-25 19:56:31,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773741117] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:56:31,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:56:31,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:56:31,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269284377] [2021-11-25 19:56:31,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:56:31,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:56:31,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:56:31,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:56:31,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:56:31,323 INFO L87 Difference]: Start difference. First operand 2163 states and 2734 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:56:31,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:56:31,710 INFO L93 Difference]: Finished difference Result 4325 states and 5467 transitions. [2021-11-25 19:56:31,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:56:31,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-11-25 19:56:31,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:56:31,722 INFO L225 Difference]: With dead ends: 4325 [2021-11-25 19:56:31,722 INFO L226 Difference]: Without dead ends: 2163 [2021-11-25 19:56:31,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:56:31,725 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 78 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:56:31,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 143 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:56:31,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2163 states. [2021-11-25 19:56:31,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2163 to 2163. [2021-11-25 19:56:31,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2163 states, 2162 states have (on average 1.2391304347826086) internal successors, (2679), 2162 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:56:31,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2163 states to 2163 states and 2679 transitions. [2021-11-25 19:56:31,802 INFO L78 Accepts]: Start accepts. Automaton has 2163 states and 2679 transitions. Word has length 118 [2021-11-25 19:56:31,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:56:31,802 INFO L470 AbstractCegarLoop]: Abstraction has 2163 states and 2679 transitions. [2021-11-25 19:56:31,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:56:31,802 INFO L276 IsEmpty]: Start isEmpty. Operand 2163 states and 2679 transitions. [2021-11-25 19:56:31,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-25 19:56:31,807 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:56:31,808 INFO L514 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, 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] [2021-11-25 19:56:31,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 19:56:31,808 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:56:31,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:56:31,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1806897951, now seen corresponding path program 1 times [2021-11-25 19:56:31,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:56:31,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69697983] [2021-11-25 19:56:31,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:56:31,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:56:31,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:56:31,891 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-25 19:56:31,892 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:56:31,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69697983] [2021-11-25 19:56:31,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69697983] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:56:31,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:56:31,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:56:31,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660624946] [2021-11-25 19:56:31,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:56:31,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:56:31,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:56:31,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:56:31,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:56:31,895 INFO L87 Difference]: Start difference. First operand 2163 states and 2679 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:56:32,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:56:32,066 INFO L93 Difference]: Finished difference Result 3925 states and 4897 transitions. [2021-11-25 19:56:32,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:56:32,067 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 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 139 [2021-11-25 19:56:32,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:56:32,076 INFO L225 Difference]: With dead ends: 3925 [2021-11-25 19:56:32,076 INFO L226 Difference]: Without dead ends: 1683 [2021-11-25 19:56:32,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:56:32,080 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 99 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:56:32,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 4 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:56:32,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1683 states. [2021-11-25 19:56:32,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1683 to 1683. [2021-11-25 19:56:32,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1683 states, 1682 states have (on average 1.2045184304399525) internal successors, (2026), 1682 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:56:32,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1683 states to 1683 states and 2026 transitions. [2021-11-25 19:56:32,123 INFO L78 Accepts]: Start accepts. Automaton has 1683 states and 2026 transitions. Word has length 139 [2021-11-25 19:56:32,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:56:32,123 INFO L470 AbstractCegarLoop]: Abstraction has 1683 states and 2026 transitions. [2021-11-25 19:56:32,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:56:32,124 INFO L276 IsEmpty]: Start isEmpty. Operand 1683 states and 2026 transitions. [2021-11-25 19:56:32,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-25 19:56:32,128 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:56:32,128 INFO L514 BasicCegarLoop]: trace histogram [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, 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] [2021-11-25 19:56:32,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 19:56:32,128 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:56:32,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:56:32,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1029735206, now seen corresponding path program 1 times [2021-11-25 19:56:32,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:56:32,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754681539] [2021-11-25 19:56:32,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:56:32,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:56:32,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:56:32,187 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-25 19:56:32,188 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:56:32,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754681539] [2021-11-25 19:56:32,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754681539] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:56:32,188 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:56:32,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:56:32,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184967125] [2021-11-25 19:56:32,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:56:32,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:56:32,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:56:32,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:56:32,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:56:32,190 INFO L87 Difference]: Start difference. First operand 1683 states and 2026 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:56:32,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:56:32,468 INFO L93 Difference]: Finished difference Result 3605 states and 4407 transitions. [2021-11-25 19:56:32,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:56:32,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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 152 [2021-11-25 19:56:32,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:56:32,478 INFO L225 Difference]: With dead ends: 3605 [2021-11-25 19:56:32,479 INFO L226 Difference]: Without dead ends: 2003 [2021-11-25 19:56:32,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:56:32,482 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 62 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:56:32,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 103 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:56:32,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2003 states. [2021-11-25 19:56:32,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2003 to 1523. [2021-11-25 19:56:32,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1522 states have (on average 1.216819973718791) internal successors, (1852), 1522 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:56:32,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 1852 transitions. [2021-11-25 19:56:32,552 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 1852 transitions. Word has length 152 [2021-11-25 19:56:32,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:56:32,552 INFO L470 AbstractCegarLoop]: Abstraction has 1523 states and 1852 transitions. [2021-11-25 19:56:32,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:56:32,553 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 1852 transitions. [2021-11-25 19:56:32,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-25 19:56:32,556 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:56:32,557 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:56:32,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 19:56:32,557 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:56:32,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:56:32,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1186098213, now seen corresponding path program 1 times [2021-11-25 19:56:32,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:56:32,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728654323] [2021-11-25 19:56:32,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:56:32,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:56:32,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:56:32,629 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:56:32,629 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:56:32,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728654323] [2021-11-25 19:56:32,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728654323] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:56:32,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:56:32,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:56:32,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408760912] [2021-11-25 19:56:32,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:56:32,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:56:32,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:56:32,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:56:32,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:56:32,631 INFO L87 Difference]: Start difference. First operand 1523 states and 1852 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) [2021-11-25 19:56:32,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:56:32,866 INFO L93 Difference]: Finished difference Result 2565 states and 3086 transitions. [2021-11-25 19:56:32,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:56:32,866 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 165 [2021-11-25 19:56:32,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:56:32,872 INFO L225 Difference]: With dead ends: 2565 [2021-11-25 19:56:32,873 INFO L226 Difference]: Without dead ends: 1203 [2021-11-25 19:56:32,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:56:32,875 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 34 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:56:32,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 131 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:56:32,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2021-11-25 19:56:32,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1203. [2021-11-25 19:56:32,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 1202 states have (on average 1.1106489184692179) internal successors, (1335), 1202 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:56:32,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1335 transitions. [2021-11-25 19:56:32,905 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1335 transitions. Word has length 165 [2021-11-25 19:56:32,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:56:32,906 INFO L470 AbstractCegarLoop]: Abstraction has 1203 states and 1335 transitions. [2021-11-25 19:56:32,906 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) [2021-11-25 19:56:32,906 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1335 transitions. [2021-11-25 19:56:32,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-25 19:56:32,909 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:56:32,910 INFO L514 BasicCegarLoop]: trace histogram [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, 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] [2021-11-25 19:56:32,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 19:56:32,910 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:56:32,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:56:32,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1927541270, now seen corresponding path program 1 times [2021-11-25 19:56:32,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:56:32,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8240865] [2021-11-25 19:56:32,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:56:32,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:56:32,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:56:32,997 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:56:32,998 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:56:32,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8240865] [2021-11-25 19:56:32,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8240865] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:56:32,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:56:32,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:56:32,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694503926] [2021-11-25 19:56:32,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:56:32,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:56:32,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:56:33,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:56:33,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:56:33,000 INFO L87 Difference]: Start difference. First operand 1203 states and 1335 transitions. Second operand has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:56:33,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:56:33,327 INFO L93 Difference]: Finished difference Result 2325 states and 2586 transitions. [2021-11-25 19:56:33,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:56:33,327 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 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 [2021-11-25 19:56:33,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:56:33,334 INFO L225 Difference]: With dead ends: 2325 [2021-11-25 19:56:33,334 INFO L226 Difference]: Without dead ends: 1203 [2021-11-25 19:56:33,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:56:33,336 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 123 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:56:33,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 115 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:56:33,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2021-11-25 19:56:33,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1203. [2021-11-25 19:56:33,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 1202 states have (on average 1.1073211314475873) internal successors, (1331), 1202 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:56:33,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1331 transitions. [2021-11-25 19:56:33,373 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1331 transitions. Word has length 178 [2021-11-25 19:56:33,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:56:33,374 INFO L470 AbstractCegarLoop]: Abstraction has 1203 states and 1331 transitions. [2021-11-25 19:56:33,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:56:33,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1331 transitions. [2021-11-25 19:56:33,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-25 19:56:33,378 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:56:33,378 INFO L514 BasicCegarLoop]: trace histogram [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, 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] [2021-11-25 19:56:33,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 19:56:33,379 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:56:33,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:56:33,379 INFO L85 PathProgramCache]: Analyzing trace with hash -32390184, now seen corresponding path program 1 times [2021-11-25 19:56:33,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:56:33,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30885456] [2021-11-25 19:56:33,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:56:33,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:56:33,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:56:33,647 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 93 proven. 101 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:56:33,647 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:56:33,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30885456] [2021-11-25 19:56:33,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30885456] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:56:33,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902252137] [2021-11-25 19:56:33,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:56:33,648 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:56:33,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dd17d11-8d2e-45af-90cb-c88959aad5b3/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:56:33,651 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dd17d11-8d2e-45af-90cb-c88959aad5b3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:56:33,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dd17d11-8d2e-45af-90cb-c88959aad5b3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 19:56:33,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:56:33,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 19:56:33,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:56:34,187 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2021-11-25 19:56:34,187 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:56:34,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902252137] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:56:34,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:56:34,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2021-11-25 19:56:34,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198491430] [2021-11-25 19:56:34,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:56:34,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:56:34,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:56:34,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:56:34,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:56:34,190 INFO L87 Difference]: Start difference. First operand 1203 states and 1331 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:56:34,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:56:34,300 INFO L93 Difference]: Finished difference Result 1203 states and 1331 transitions. [2021-11-25 19:56:34,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:56:34,301 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 210 [2021-11-25 19:56:34,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:56:34,301 INFO L225 Difference]: With dead ends: 1203 [2021-11-25 19:56:34,301 INFO L226 Difference]: Without dead ends: 0 [2021-11-25 19:56:34,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:56:34,304 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:56:34,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 3 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:56:34,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-25 19:56:34,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-25 19:56:34,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:56:34,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-25 19:56:34,307 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 210 [2021-11-25 19:56:34,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:56:34,307 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-25 19:56:34,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:56:34,307 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-25 19:56:34,307 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-25 19:56:34,312 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-25 19:56:34,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dd17d11-8d2e-45af-90cb-c88959aad5b3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 19:56:34,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dd17d11-8d2e-45af-90cb-c88959aad5b3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:56:34,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-25 19:56:34,993 INFO L858 garLoopResultBuilder]: For program point L301(lines 301 423) no Hoare annotation was computed. [2021-11-25 19:56:34,993 INFO L858 garLoopResultBuilder]: For program point L235(lines 235 423) no Hoare annotation was computed. [2021-11-25 19:56:34,993 INFO L858 garLoopResultBuilder]: For program point L169(lines 169 423) no Hoare annotation was computed. [2021-11-25 19:56:34,994 INFO L858 garLoopResultBuilder]: For program point L303(lines 303 423) no Hoare annotation was computed. [2021-11-25 19:56:34,994 INFO L858 garLoopResultBuilder]: For program point L105(lines 105 423) no Hoare annotation was computed. [2021-11-25 19:56:34,994 INFO L858 garLoopResultBuilder]: For program point L40(lines 40 423) no Hoare annotation was computed. [2021-11-25 19:56:34,994 INFO L858 garLoopResultBuilder]: For program point L371(lines 371 423) no Hoare annotation was computed. [2021-11-25 19:56:34,994 INFO L858 garLoopResultBuilder]: For program point L307(lines 307 423) no Hoare annotation was computed. [2021-11-25 19:56:34,994 INFO L858 garLoopResultBuilder]: For program point L175(lines 175 423) no Hoare annotation was computed. [2021-11-25 19:56:34,994 INFO L858 garLoopResultBuilder]: For program point L109(lines 109 423) no Hoare annotation was computed. [2021-11-25 19:56:34,994 INFO L858 garLoopResultBuilder]: For program point L242(lines 242 423) no Hoare annotation was computed. [2021-11-25 19:56:34,994 INFO L858 garLoopResultBuilder]: For program point L45(lines 45 423) no Hoare annotation was computed. [2021-11-25 19:56:34,994 INFO L858 garLoopResultBuilder]: For program point L244(lines 244 423) no Hoare annotation was computed. [2021-11-25 19:56:34,995 INFO L858 garLoopResultBuilder]: For program point L179(lines 179 423) no Hoare annotation was computed. [2021-11-25 19:56:34,995 INFO L858 garLoopResultBuilder]: For program point L378(lines 378 423) no Hoare annotation was computed. [2021-11-25 19:56:34,995 INFO L858 garLoopResultBuilder]: For program point L48(lines 48 423) no Hoare annotation was computed. [2021-11-25 19:56:34,995 INFO L858 garLoopResultBuilder]: For program point L247(lines 247 423) no Hoare annotation was computed. [2021-11-25 19:56:34,995 INFO L858 garLoopResultBuilder]: For program point L116(lines 116 423) no Hoare annotation was computed. [2021-11-25 19:56:34,995 INFO L858 garLoopResultBuilder]: For program point L52(lines 52 423) no Hoare annotation was computed. [2021-11-25 19:56:34,995 INFO L858 garLoopResultBuilder]: For program point L185(lines 185 423) no Hoare annotation was computed. [2021-11-25 19:56:34,995 INFO L858 garLoopResultBuilder]: For program point L385(lines 385 423) no Hoare annotation was computed. [2021-11-25 19:56:34,995 INFO L858 garLoopResultBuilder]: For program point L319(lines 319 423) no Hoare annotation was computed. [2021-11-25 19:56:34,995 INFO L858 garLoopResultBuilder]: For program point L189(lines 189 423) no Hoare annotation was computed. [2021-11-25 19:56:34,996 INFO L858 garLoopResultBuilder]: For program point L123(lines 123 423) no Hoare annotation was computed. [2021-11-25 19:56:34,996 INFO L858 garLoopResultBuilder]: For program point L57(lines 57 423) no Hoare annotation was computed. [2021-11-25 19:56:34,996 INFO L858 garLoopResultBuilder]: For program point L388(lines 388 423) no Hoare annotation was computed. [2021-11-25 19:56:34,996 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-25 19:56:34,996 INFO L858 garLoopResultBuilder]: For program point L390(lines 390 423) no Hoare annotation was computed. [2021-11-25 19:56:34,996 INFO L858 garLoopResultBuilder]: For program point L324(lines 324 423) no Hoare annotation was computed. [2021-11-25 19:56:34,996 INFO L858 garLoopResultBuilder]: For program point L258(lines 258 423) no Hoare annotation was computed. [2021-11-25 19:56:34,996 INFO L858 garLoopResultBuilder]: For program point L60(lines 60 423) no Hoare annotation was computed. [2021-11-25 19:56:34,996 INFO L858 garLoopResultBuilder]: For program point L523-1(lines 39 608) no Hoare annotation was computed. [2021-11-25 19:56:34,997 INFO L858 garLoopResultBuilder]: For program point L195(lines 195 423) no Hoare annotation was computed. [2021-11-25 19:56:34,997 INFO L858 garLoopResultBuilder]: For program point L129(lines 129 423) no Hoare annotation was computed. [2021-11-25 19:56:34,997 INFO L858 garLoopResultBuilder]: For program point L526-1(lines 39 608) no Hoare annotation was computed. [2021-11-25 19:56:34,997 INFO L858 garLoopResultBuilder]: For program point L64(lines 64 423) no Hoare annotation was computed. [2021-11-25 19:56:34,997 INFO L858 garLoopResultBuilder]: For program point L527(line 527) no Hoare annotation was computed. [2021-11-25 19:56:34,997 INFO L858 garLoopResultBuilder]: For program point L263(lines 263 423) no Hoare annotation was computed. [2021-11-25 19:56:34,997 INFO L858 garLoopResultBuilder]: For program point L197(lines 197 423) no Hoare annotation was computed. [2021-11-25 19:56:34,997 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 527) no Hoare annotation was computed. [2021-11-25 19:56:34,997 INFO L858 garLoopResultBuilder]: For program point L199(lines 199 423) no Hoare annotation was computed. [2021-11-25 19:56:34,997 INFO L858 garLoopResultBuilder]: For program point L133(lines 133 423) no Hoare annotation was computed. [2021-11-25 19:56:34,998 INFO L858 garLoopResultBuilder]: For program point L399(lines 399 423) no Hoare annotation was computed. [2021-11-25 19:56:34,998 INFO L858 garLoopResultBuilder]: For program point L201(lines 201 423) no Hoare annotation was computed. [2021-11-25 19:56:34,998 INFO L858 garLoopResultBuilder]: For program point L69(lines 69 423) no Hoare annotation was computed. [2021-11-25 19:56:34,998 INFO L858 garLoopResultBuilder]: For program point L269(lines 269 423) no Hoare annotation was computed. [2021-11-25 19:56:34,998 INFO L858 garLoopResultBuilder]: For program point L204(lines 204 423) no Hoare annotation was computed. [2021-11-25 19:56:34,998 INFO L858 garLoopResultBuilder]: For program point L271(lines 271 423) no Hoare annotation was computed. [2021-11-25 19:56:34,998 INFO L858 garLoopResultBuilder]: For program point L404(lines 404 423) no Hoare annotation was computed. [2021-11-25 19:56:34,998 INFO L858 garLoopResultBuilder]: For program point L338(lines 338 423) no Hoare annotation was computed. [2021-11-25 19:56:34,998 INFO L858 garLoopResultBuilder]: For program point L140(lines 140 423) no Hoare annotation was computed. [2021-11-25 19:56:34,998 INFO L858 garLoopResultBuilder]: For program point L75(lines 75 423) no Hoare annotation was computed. [2021-11-25 19:56:34,999 INFO L858 garLoopResultBuilder]: For program point L208(lines 208 423) no Hoare annotation was computed. [2021-11-25 19:56:34,999 INFO L858 garLoopResultBuilder]: For program point L341(lines 341 423) no Hoare annotation was computed. [2021-11-25 19:56:34,999 INFO L858 garLoopResultBuilder]: For program point L408(lines 408 423) no Hoare annotation was computed. [2021-11-25 19:56:34,999 INFO L858 garLoopResultBuilder]: For program point L144(lines 144 423) no Hoare annotation was computed. [2021-11-25 19:56:34,999 INFO L854 garLoopResultBuilder]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse4 (<= ~a28~0 7)) (.cse1 (<= 8 ~a17~0)) (.cse5 (<= 9 ~a28~0)) (.cse2 (<= ~a17~0 8)) (.cse3 (= ~a19~0 1)) (.cse6 (<= ~a17~0 7)) (.cse7 (<= ~a28~0 10)) (.cse0 (= ~a25~0 1))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse0 .cse2 .cse3 .cse4) (and (= ~a25~0 ~a11~0) .cse5 .cse0 .cse6 .cse7) (and .cse0 (<= ~a11~0 0) .cse3 .cse4) (and .cse1 .cse2 .cse7) (and .cse5 .cse0 .cse2 .cse7 .cse3) (and (<= 10 ~a28~0) .cse6 .cse7 (not .cse0)))) [2021-11-25 19:56:34,999 INFO L858 garLoopResultBuilder]: For program point L79(lines 79 423) no Hoare annotation was computed. [2021-11-25 19:56:34,999 INFO L858 garLoopResultBuilder]: For program point L212(lines 212 423) no Hoare annotation was computed. [2021-11-25 19:56:34,999 INFO L861 garLoopResultBuilder]: At program point L610(lines 610 627) the Hoare annotation is: true [2021-11-25 19:56:35,000 INFO L858 garLoopResultBuilder]: For program point L412(lines 412 423) no Hoare annotation was computed. [2021-11-25 19:56:35,000 INFO L858 garLoopResultBuilder]: For program point L347(lines 347 423) no Hoare annotation was computed. [2021-11-25 19:56:35,000 INFO L858 garLoopResultBuilder]: For program point L149(lines 149 423) no Hoare annotation was computed. [2021-11-25 19:56:35,000 INFO L858 garLoopResultBuilder]: For program point L414(lines 414 423) no Hoare annotation was computed. [2021-11-25 19:56:35,000 INFO L858 garLoopResultBuilder]: For program point L84(lines 84 423) no Hoare annotation was computed. [2021-11-25 19:56:35,000 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-25 19:56:35,000 INFO L858 garLoopResultBuilder]: For program point L417(lines 417 423) no Hoare annotation was computed. [2021-11-25 19:56:35,000 INFO L858 garLoopResultBuilder]: For program point L153(lines 153 423) no Hoare annotation was computed. [2021-11-25 19:56:35,000 INFO L854 garLoopResultBuilder]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse4 (<= ~a28~0 7)) (.cse1 (<= 8 ~a17~0)) (.cse5 (<= 9 ~a28~0)) (.cse2 (<= ~a17~0 8)) (.cse3 (= ~a19~0 1)) (.cse6 (<= ~a17~0 7)) (.cse7 (<= ~a28~0 10)) (.cse0 (= ~a25~0 1))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse0 .cse2 .cse3 .cse4) (and (= ~a25~0 ~a11~0) .cse5 .cse0 .cse6 .cse7) (and .cse0 (<= ~a11~0 0) .cse3 .cse4) (and .cse1 .cse2 .cse7) (and .cse5 .cse0 .cse2 .cse7 .cse3) (and (<= 10 ~a28~0) .cse6 .cse7 (not .cse0)))) [2021-11-25 19:56:35,001 INFO L858 garLoopResultBuilder]: For program point L286(lines 286 423) no Hoare annotation was computed. [2021-11-25 19:56:35,001 INFO L858 garLoopResultBuilder]: For program point L419(lines 419 423) no Hoare annotation was computed. [2021-11-25 19:56:35,001 INFO L858 garLoopResultBuilder]: For program point L222(lines 222 423) no Hoare annotation was computed. [2021-11-25 19:56:35,001 INFO L858 garLoopResultBuilder]: For program point L290(lines 290 423) no Hoare annotation was computed. [2021-11-25 19:56:35,001 INFO L858 garLoopResultBuilder]: For program point L158(lines 158 423) no Hoare annotation was computed. [2021-11-25 19:56:35,001 INFO L858 garLoopResultBuilder]: For program point L92(lines 92 423) no Hoare annotation was computed. [2021-11-25 19:56:35,001 INFO L858 garLoopResultBuilder]: For program point L621(line 621) no Hoare annotation was computed. [2021-11-25 19:56:35,001 INFO L858 garLoopResultBuilder]: For program point L225(lines 225 423) no Hoare annotation was computed. [2021-11-25 19:56:35,001 INFO L858 garLoopResultBuilder]: For program point L359(lines 359 423) no Hoare annotation was computed. [2021-11-25 19:56:35,001 INFO L858 garLoopResultBuilder]: For program point L293(lines 293 423) no Hoare annotation was computed. [2021-11-25 19:56:35,002 INFO L858 garLoopResultBuilder]: For program point L228(lines 228 423) no Hoare annotation was computed. [2021-11-25 19:56:35,002 INFO L858 garLoopResultBuilder]: For program point L296(lines 296 423) no Hoare annotation was computed. [2021-11-25 19:56:35,002 INFO L858 garLoopResultBuilder]: For program point L164(lines 164 423) no Hoare annotation was computed. [2021-11-25 19:56:35,002 INFO L858 garLoopResultBuilder]: For program point L364(lines 364 423) no Hoare annotation was computed. [2021-11-25 19:56:35,002 INFO L858 garLoopResultBuilder]: For program point L233(lines 233 423) no Hoare annotation was computed. [2021-11-25 19:56:35,002 INFO L858 garLoopResultBuilder]: For program point L101(lines 101 423) no Hoare annotation was computed. [2021-11-25 19:56:35,007 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:56:35,008 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 19:56:35,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 07:56:35 BoogieIcfgContainer [2021-11-25 19:56:35,054 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 19:56:35,055 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 19:56:35,055 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 19:56:35,056 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 19:56:35,056 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:56:26" (3/4) ... [2021-11-25 19:56:35,059 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-25 19:56:35,087 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 116 nodes and edges [2021-11-25 19:56:35,095 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2021-11-25 19:56:35,096 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-11-25 19:56:35,098 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-25 19:56:35,247 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dd17d11-8d2e-45af-90cb-c88959aad5b3/bin/utaipan-eEHZpOm5b7/witness.graphml [2021-11-25 19:56:35,248 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 19:56:35,248 INFO L158 Benchmark]: Toolchain (without parser) took 10940.42ms. Allocated memory was 90.2MB in the beginning and 209.7MB in the end (delta: 119.5MB). Free memory was 56.1MB in the beginning and 127.4MB in the end (delta: -71.3MB). Peak memory consumption was 48.6MB. Max. memory is 16.1GB. [2021-11-25 19:56:35,249 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 90.2MB. Free memory was 58.4MB in the beginning and 58.3MB in the end (delta: 24.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:56:35,249 INFO L158 Benchmark]: CACSL2BoogieTranslator took 593.12ms. Allocated memory was 90.2MB in the beginning and 115.3MB in the end (delta: 25.2MB). Free memory was 55.9MB in the beginning and 75.2MB in the end (delta: -19.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-25 19:56:35,250 INFO L158 Benchmark]: Boogie Procedure Inliner took 116.49ms. Allocated memory is still 115.3MB. Free memory was 75.2MB in the beginning and 70.1MB in the end (delta: 5.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-25 19:56:35,251 INFO L158 Benchmark]: Boogie Preprocessor took 61.71ms. Allocated memory is still 115.3MB. Free memory was 70.1MB in the beginning and 65.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-25 19:56:35,251 INFO L158 Benchmark]: RCFGBuilder took 1281.95ms. Allocated memory is still 115.3MB. Free memory was 65.9MB in the beginning and 67.8MB in the end (delta: -1.9MB). Peak memory consumption was 32.3MB. Max. memory is 16.1GB. [2021-11-25 19:56:35,251 INFO L158 Benchmark]: TraceAbstraction took 8671.73ms. Allocated memory was 115.3MB in the beginning and 209.7MB in the end (delta: 94.4MB). Free memory was 67.2MB in the beginning and 142.1MB in the end (delta: -74.9MB). Peak memory consumption was 109.0MB. Max. memory is 16.1GB. [2021-11-25 19:56:35,252 INFO L158 Benchmark]: Witness Printer took 192.51ms. Allocated memory is still 209.7MB. Free memory was 142.1MB in the beginning and 127.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-25 19:56:35,258 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 90.2MB. Free memory was 58.4MB in the beginning and 58.3MB in the end (delta: 24.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 593.12ms. Allocated memory was 90.2MB in the beginning and 115.3MB in the end (delta: 25.2MB). Free memory was 55.9MB in the beginning and 75.2MB in the end (delta: -19.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 116.49ms. Allocated memory is still 115.3MB. Free memory was 75.2MB in the beginning and 70.1MB in the end (delta: 5.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.71ms. Allocated memory is still 115.3MB. Free memory was 70.1MB in the beginning and 65.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1281.95ms. Allocated memory is still 115.3MB. Free memory was 65.9MB in the beginning and 67.8MB in the end (delta: -1.9MB). Peak memory consumption was 32.3MB. Max. memory is 16.1GB. * TraceAbstraction took 8671.73ms. Allocated memory was 115.3MB in the beginning and 209.7MB in the end (delta: 94.4MB). Free memory was 67.2MB in the beginning and 142.1MB in the end (delta: -74.9MB). Peak memory consumption was 109.0MB. Max. memory is 16.1GB. * Witness Printer took 192.51ms. Allocated memory is still 209.7MB. Free memory was 142.1MB in the beginning and 127.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 527]: 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: 8.5s, OverallIterations: 13, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 832 SdHoareTripleChecker+Valid, 3.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 832 mSDsluCounter, 990 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 69 mSDsCounter, 607 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3019 IncrementalHoareTripleChecker+Invalid, 3626 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 607 mSolverCounterUnsat, 922 mSDtfsCounter, 3019 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 339 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2163occurred in iteration=7, InterpolantAutomatonStates: 40, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 13 MinimizatonAttempts, 640 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 49 NumberOfFragments, 193 HoareAnnotationTreeSize, 3 FomulaSimplifications, 78 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 942 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 1911 NumberOfCodeBlocks, 1911 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 1896 ConstructedInterpolants, 0 QuantifiedInterpolants, 6123 SizeOfPredicates, 0 NumberOfNonLiveVariables, 652 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 15 InterpolantComputations, 13 PerfectInterpolantSequences, 953/1062 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: ((((((((a25 == 1 && 8 <= a17) && a17 <= 8) && a19 == 1) || (((a25 == 1 && a17 <= 8) && a19 == 1) && a28 <= 7)) || ((((a25 == a11 && 9 <= a28) && a25 == 1) && a17 <= 7) && a28 <= 10)) || (((a25 == 1 && a11 <= 0) && a19 == 1) && a28 <= 7)) || ((8 <= a17 && a17 <= 8) && a28 <= 10)) || ((((9 <= a28 && a25 == 1) && a17 <= 8) && a28 <= 10) && a19 == 1)) || (((10 <= a28 && a17 <= 7) && a28 <= 10) && !(a25 == 1)) - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((((((a25 == 1 && 8 <= a17) && a17 <= 8) && a19 == 1) || (((a25 == 1 && a17 <= 8) && a19 == 1) && a28 <= 7)) || ((((a25 == a11 && 9 <= a28) && a25 == 1) && a17 <= 7) && a28 <= 10)) || (((a25 == 1 && a11 <= 0) && a19 == 1) && a28 <= 7)) || ((8 <= a17 && a17 <= 8) && a28 <= 10)) || ((((9 <= a28 && a25 == 1) && a17 <= 8) && a28 <= 10) && a19 == 1)) || (((10 <= a28 && a17 <= 7) && a28 <= 10) && !(a25 == 1)) RESULT: Ultimate proved your program to be correct! [2021-11-25 19:56:35,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dd17d11-8d2e-45af-90cb-c88959aad5b3/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE