./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem14_label26.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem14_label26.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs --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 b595fa05a1614340785d09d23c14605d58462277 ....................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem14_label26.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs --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 b595fa05a1614340785d09d23c14605d58462277 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:56:26,943 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:56:26,945 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:56:26,978 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:56:26,978 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:56:26,980 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:56:26,982 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:56:26,984 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:56:26,986 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:56:26,988 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:56:26,989 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:56:26,991 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:56:26,991 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:56:26,993 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:56:26,994 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:56:26,996 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:56:26,997 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:56:26,998 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:56:27,000 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:56:27,003 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:56:27,005 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:56:27,006 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:56:27,008 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:56:27,009 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:56:27,013 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:56:27,014 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:56:27,014 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:56:27,015 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:56:27,016 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:56:27,017 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:56:27,018 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:56:27,019 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:56:27,020 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:56:27,021 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:56:27,022 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:56:27,023 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:56:27,024 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:56:27,024 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:56:27,024 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:56:27,026 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:56:27,026 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:56:27,027 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:56:27,053 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:56:27,054 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:56:27,054 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:56:27,055 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:56:27,055 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:56:27,055 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:56:27,056 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:56:27,056 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:56:27,056 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:56:27,056 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:56:27,057 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:56:27,057 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:56:27,058 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:56:27,058 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:56:27,058 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:56:27,059 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:56:27,059 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:56:27,060 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:56:27,060 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:56:27,060 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:56:27,060 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:56:27,061 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:56:27,061 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:56:27,061 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:56:27,062 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:56:27,062 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:56:27,062 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:56:27,062 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:56:27,063 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:56:27,063 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:56:27,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:56:27,064 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:56:27,064 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:56:27,064 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:56:27,065 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:56:27,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:56:27,065 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:56:27,066 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:56:27,066 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:56:27,066 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_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b595fa05a1614340785d09d23c14605d58462277 [2021-10-16 02:56:27,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:56:27,388 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:56:27,391 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:56:27,393 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:56:27,394 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:56:27,395 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/eca-rers2012/Problem14_label26.c [2021-10-16 02:56:27,457 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/data/b721c42be/b3f76f0f17214f71a164af59ebefde85/FLAG12877dc41 [2021-10-16 02:56:28,088 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:56:28,093 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/sv-benchmarks/c/eca-rers2012/Problem14_label26.c [2021-10-16 02:56:28,109 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/data/b721c42be/b3f76f0f17214f71a164af59ebefde85/FLAG12877dc41 [2021-10-16 02:56:28,335 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/data/b721c42be/b3f76f0f17214f71a164af59ebefde85 [2021-10-16 02:56:28,338 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:56:28,339 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:56:28,341 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:56:28,341 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:56:28,347 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:56:28,348 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:56:28" (1/1) ... [2021-10-16 02:56:28,349 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2da28aaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:28, skipping insertion in model container [2021-10-16 02:56:28,349 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:56:28" (1/1) ... [2021-10-16 02:56:28,356 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:56:28,424 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:56:28,671 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/sv-benchmarks/c/eca-rers2012/Problem14_label26.c[6725,6738] [2021-10-16 02:56:28,906 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:56:28,927 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:56:28,977 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/sv-benchmarks/c/eca-rers2012/Problem14_label26.c[6725,6738] [2021-10-16 02:56:29,132 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:56:29,147 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:56:29,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:29 WrapperNode [2021-10-16 02:56:29,148 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:56:29,149 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:56:29,149 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:56:29,149 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:56:29,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:29" (1/1) ... [2021-10-16 02:56:29,186 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:29" (1/1) ... [2021-10-16 02:56:29,259 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:56:29,260 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:56:29,261 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:56:29,261 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:56:29,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:29" (1/1) ... [2021-10-16 02:56:29,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:29" (1/1) ... [2021-10-16 02:56:29,277 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:29" (1/1) ... [2021-10-16 02:56:29,277 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:29" (1/1) ... [2021-10-16 02:56:29,311 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:29" (1/1) ... [2021-10-16 02:56:29,321 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:29" (1/1) ... [2021-10-16 02:56:29,332 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:29" (1/1) ... [2021-10-16 02:56:29,346 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:56:29,347 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:56:29,347 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:56:29,348 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:56:29,349 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:29" (1/1) ... [2021-10-16 02:56:29,356 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:56:29,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:56:29,381 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:56:29,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:56:29,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:56:29,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:56:29,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:56:29,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:56:42,389 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:56:42,389 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-16 02:56:42,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:56:42 BoogieIcfgContainer [2021-10-16 02:56:42,391 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:56:42,393 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:56:42,393 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:56:42,400 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:56:42,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:56:28" (1/3) ... [2021-10-16 02:56:42,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@578e35bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:56:42, skipping insertion in model container [2021-10-16 02:56:42,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:29" (2/3) ... [2021-10-16 02:56:42,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@578e35bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:56:42, skipping insertion in model container [2021-10-16 02:56:42,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:56:42" (3/3) ... [2021-10-16 02:56:42,404 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label26.c [2021-10-16 02:56:42,416 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:56:42,416 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:56:42,486 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:56:42,496 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, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 02:56:42,497 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:56:42,511 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:56:42,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-16 02:56:42,516 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:56:42,516 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-16 02:56:42,517 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:56:42,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:56:42,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1065584302, now seen corresponding path program 1 times [2021-10-16 02:56:42,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:56:42,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894914495] [2021-10-16 02:56:42,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:56:42,551 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:56:42,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:56:42,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:56:42,828 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:56:42,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894914495] [2021-10-16 02:56:42,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894914495] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:56:42,830 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:56:42,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:56:42,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646336060] [2021-10-16 02:56:42,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:56:42,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:56:42,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:56:42,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:56:42,861 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 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 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:56:42,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:56:42,942 INFO L93 Difference]: Finished difference Result 23 states and 29 transitions. [2021-10-16 02:56:42,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:56:42,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2021-10-16 02:56:42,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:56:42,953 INFO L225 Difference]: With dead ends: 23 [2021-10-16 02:56:42,953 INFO L226 Difference]: Without dead ends: 11 [2021-10-16 02:56:42,957 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:56:42,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-16 02:56:42,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2021-10-16 02:56:42,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:56:42,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-10-16 02:56:42,992 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 5 [2021-10-16 02:56:42,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:56:42,993 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-10-16 02:56:42,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:56:42,994 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-10-16 02:56:42,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-16 02:56:42,994 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:56:42,994 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2021-10-16 02:56:42,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:56:42,996 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:56:42,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:56:43,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1864470743, now seen corresponding path program 1 times [2021-10-16 02:56:43,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:56:43,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050735745] [2021-10-16 02:56:43,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:56:43,002 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:56:43,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:56:43,525 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:56:43,526 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:56:43,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050735745] [2021-10-16 02:56:43,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050735745] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:56:43,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682622956] [2021-10-16 02:56:43,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:56:43,527 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:56:43,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:56:43,529 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:56:43,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 02:56:43,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:56:43,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 02:56:43,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:57:19,707 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:19,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:00:40,227 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-16 03:00:40,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [677274347] [2021-10-16 03:00:40,247 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-10-16 03:00:40,247 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 03:00:40,252 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 03:00:40,257 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 03:00:40,258 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 03:00:40,295 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:00:40,297 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 03:00:40,298 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:00:40,298 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 03:00:40,299 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 03:00:40,300 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:00:40,300 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-16 03:00:40,302 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 152 [2021-10-16 03:00:40,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:00:40,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:00:40,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:00:40,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-16 03:00:40,350 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:00:40,351 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 03:00:40,352 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:00:40,356 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 03:00:40,356 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-16 03:00:40,367 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:00:40,404 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:00:40,407 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:00:40,409 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 152 [2021-10-16 03:00:40,410 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-16 03:00:40,410 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:149, output treesize:152 [2021-10-16 03:00:40,440 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-16 03:00:40,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:00:40,626 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#valid_10| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-16 03:00:40,628 INFO L168 Benchmark]: Toolchain (without parser) took 252288.36 ms. Allocated memory was 88.1 MB in the beginning and 2.9 GB in the end (delta: 2.9 GB). Free memory was 49.7 MB in the beginning and 1.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.6 GB. Max. memory is 16.1 GB. [2021-10-16 03:00:40,629 INFO L168 Benchmark]: CDTParser took 0.94 ms. Allocated memory is still 88.1 MB. Free memory is still 68.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:00:40,630 INFO L168 Benchmark]: CACSL2BoogieTranslator took 807.43 ms. Allocated memory was 88.1 MB in the beginning and 113.2 MB in the end (delta: 25.2 MB). Free memory was 49.5 MB in the beginning and 67.8 MB in the end (delta: -18.3 MB). Peak memory consumption was 8.7 MB. Max. memory is 16.1 GB. [2021-10-16 03:00:40,630 INFO L168 Benchmark]: Boogie Procedure Inliner took 110.36 ms. Allocated memory is still 113.2 MB. Free memory was 67.8 MB in the beginning and 58.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 03:00:40,631 INFO L168 Benchmark]: Boogie Preprocessor took 86.58 ms. Allocated memory is still 113.2 MB. Free memory was 58.1 MB in the beginning and 52.1 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-16 03:00:40,632 INFO L168 Benchmark]: RCFGBuilder took 13044.32 ms. Allocated memory was 113.2 MB in the beginning and 780.1 MB in the end (delta: 666.9 MB). Free memory was 52.1 MB in the beginning and 600.4 MB in the end (delta: -548.3 MB). Peak memory consumption was 248.5 MB. Max. memory is 16.1 GB. [2021-10-16 03:00:40,632 INFO L168 Benchmark]: TraceAbstraction took 238233.85 ms. Allocated memory was 780.1 MB in the beginning and 2.9 GB in the end (delta: 2.2 GB). Free memory was 600.4 MB in the beginning and 1.3 GB in the end (delta: -732.7 MB). Peak memory consumption was 1.4 GB. Max. memory is 16.1 GB. [2021-10-16 03:00:40,636 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.94 ms. Allocated memory is still 88.1 MB. Free memory is still 68.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 807.43 ms. Allocated memory was 88.1 MB in the beginning and 113.2 MB in the end (delta: 25.2 MB). Free memory was 49.5 MB in the beginning and 67.8 MB in the end (delta: -18.3 MB). Peak memory consumption was 8.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 110.36 ms. Allocated memory is still 113.2 MB. Free memory was 67.8 MB in the beginning and 58.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 86.58 ms. Allocated memory is still 113.2 MB. Free memory was 58.1 MB in the beginning and 52.1 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 13044.32 ms. Allocated memory was 113.2 MB in the beginning and 780.1 MB in the end (delta: 666.9 MB). Free memory was 52.1 MB in the beginning and 600.4 MB in the end (delta: -548.3 MB). Peak memory consumption was 248.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 238233.85 ms. Allocated memory was 780.1 MB in the beginning and 2.9 GB in the end (delta: 2.2 GB). Free memory was 600.4 MB in the beginning and 1.3 GB in the end (delta: -732.7 MB). Peak memory consumption was 1.4 GB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#valid_10| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#valid_10|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-16 03:00:40,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 03:00:43,225 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 03:00:43,228 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 03:00:43,282 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 03:00:43,282 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 03:00:43,287 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 03:00:43,288 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 03:00:43,293 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 03:00:43,296 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 03:00:43,303 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 03:00:43,305 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 03:00:43,306 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 03:00:43,307 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 03:00:43,309 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 03:00:43,311 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 03:00:43,315 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 03:00:43,317 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 03:00:43,318 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 03:00:43,325 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 03:00:43,332 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 03:00:43,334 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 03:00:43,336 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 03:00:43,339 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 03:00:43,341 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 03:00:43,350 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 03:00:43,350 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 03:00:43,351 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 03:00:43,353 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 03:00:43,353 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 03:00:43,355 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 03:00:43,355 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 03:00:43,356 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 03:00:43,358 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 03:00:43,359 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 03:00:43,361 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 03:00:43,361 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 03:00:43,362 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 03:00:43,362 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 03:00:43,363 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 03:00:43,365 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 03:00:43,366 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 03:00:43,371 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 03:00:43,412 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 03:00:43,413 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 03:00:43,414 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 03:00:43,415 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 03:00:43,415 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 03:00:43,415 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 03:00:43,416 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 03:00:43,416 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 03:00:43,416 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 03:00:43,418 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 03:00:43,419 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 03:00:43,419 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 03:00:43,420 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 03:00:43,420 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 03:00:43,420 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 03:00:43,421 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 03:00:43,421 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 03:00:43,421 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 03:00:43,421 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 03:00:43,422 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 03:00:43,422 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 03:00:43,422 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 03:00:43,423 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 03:00:43,423 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 03:00:43,423 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 03:00:43,424 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 03:00:43,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:00:43,425 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 03:00:43,425 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 03:00:43,425 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 03:00:43,425 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 03:00:43,426 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 03:00:43,426 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 03:00:43,427 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 03:00:43,427 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 03:00:43,428 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b595fa05a1614340785d09d23c14605d58462277 [2021-10-16 03:00:43,802 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 03:00:43,823 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 03:00:43,825 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 03:00:43,827 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 03:00:43,827 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 03:00:43,828 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/eca-rers2012/Problem14_label26.c [2021-10-16 03:00:43,893 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/data/f938ae099/9d5a97ac4f634a93ac799aa4c460f9e4/FLAG9b870055b [2021-10-16 03:00:44,569 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 03:00:44,569 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/sv-benchmarks/c/eca-rers2012/Problem14_label26.c [2021-10-16 03:00:44,586 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/data/f938ae099/9d5a97ac4f634a93ac799aa4c460f9e4/FLAG9b870055b [2021-10-16 03:00:44,912 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/data/f938ae099/9d5a97ac4f634a93ac799aa4c460f9e4 [2021-10-16 03:00:44,914 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 03:00:44,917 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 03:00:44,920 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 03:00:44,921 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 03:00:44,924 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 03:00:44,925 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:00:44" (1/1) ... [2021-10-16 03:00:44,926 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@657c3c08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:00:44, skipping insertion in model container [2021-10-16 03:00:44,926 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:00:44" (1/1) ... [2021-10-16 03:00:44,934 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 03:00:45,012 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 03:00:45,337 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/sv-benchmarks/c/eca-rers2012/Problem14_label26.c[6725,6738] [2021-10-16 03:00:45,611 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:00:45,630 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 03:00:45,684 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/sv-benchmarks/c/eca-rers2012/Problem14_label26.c[6725,6738] [2021-10-16 03:00:45,916 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:00:45,931 INFO L208 MainTranslator]: Completed translation [2021-10-16 03:00:45,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:00:45 WrapperNode [2021-10-16 03:00:45,932 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 03:00:45,934 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 03:00:45,934 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 03:00:45,934 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 03:00:45,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:00:45" (1/1) ... [2021-10-16 03:00:45,967 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:00:45" (1/1) ... [2021-10-16 03:00:46,039 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 03:00:46,040 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 03:00:46,040 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 03:00:46,040 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 03:00:46,048 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:00:45" (1/1) ... [2021-10-16 03:00:46,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:00:45" (1/1) ... [2021-10-16 03:00:46,054 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:00:45" (1/1) ... [2021-10-16 03:00:46,055 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:00:45" (1/1) ... [2021-10-16 03:00:46,096 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:00:45" (1/1) ... [2021-10-16 03:00:46,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:00:45" (1/1) ... [2021-10-16 03:00:46,113 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:00:45" (1/1) ... [2021-10-16 03:00:46,119 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 03:00:46,120 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 03:00:46,120 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 03:00:46,120 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 03:00:46,121 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:00:45" (1/1) ... [2021-10-16 03:00:46,128 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:00:46,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:00:46,162 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 03:00:46,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 03:00:46,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 03:00:46,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 03:00:46,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 03:00:46,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 03:00:49,640 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 03:00:49,640 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-16 03:00:49,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:00:49 BoogieIcfgContainer [2021-10-16 03:00:49,644 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 03:00:49,647 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 03:00:49,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 03:00:49,650 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 03:00:49,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:00:44" (1/3) ... [2021-10-16 03:00:49,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@132b8ba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:00:49, skipping insertion in model container [2021-10-16 03:00:49,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:00:45" (2/3) ... [2021-10-16 03:00:49,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@132b8ba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:00:49, skipping insertion in model container [2021-10-16 03:00:49,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:00:49" (3/3) ... [2021-10-16 03:00:49,653 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label26.c [2021-10-16 03:00:49,675 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 03:00:49,675 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 03:00:49,722 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 03:00:49,727 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, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 03:00:49,727 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 03:00:49,749 INFO L276 IsEmpty]: Start isEmpty. Operand has 245 states, 243 states have (on average 1.7366255144032923) internal successors, (422), 244 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:00:49,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-10-16 03:00:49,758 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:00:49,758 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:00:49,759 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:00:49,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:00:49,764 INFO L82 PathProgramCache]: Analyzing trace with hash -215114758, now seen corresponding path program 1 times [2021-10-16 03:00:49,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:00:49,778 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2130358863] [2021-10-16 03:00:49,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:00:49,779 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:00:49,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:00:49,786 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:00:49,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 03:00:49,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:00:49,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 03:00:49,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:00:50,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:00:50,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:00:50,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:00:50,719 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:00:50,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2130358863] [2021-10-16 03:00:50,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2130358863] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:00:50,721 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:00:50,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-16 03:00:50,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599213509] [2021-10-16 03:00:50,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:00:50,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:00:50,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:00:50,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:00:50,751 INFO L87 Difference]: Start difference. First operand has 245 states, 243 states have (on average 1.7366255144032923) internal successors, (422), 244 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:00:58,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:00:58,772 INFO L93 Difference]: Finished difference Result 866 states and 1574 transitions. [2021-10-16 03:00:58,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 03:00:58,774 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 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 66 [2021-10-16 03:00:58,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:00:58,790 INFO L225 Difference]: With dead ends: 866 [2021-10-16 03:00:58,790 INFO L226 Difference]: Without dead ends: 538 [2021-10-16 03:00:58,793 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:00:58,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2021-10-16 03:00:58,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 360. [2021-10-16 03:00:58,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 359 states have (on average 1.4206128133704736) internal successors, (510), 359 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:00:58,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 510 transitions. [2021-10-16 03:00:58,856 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 510 transitions. Word has length 66 [2021-10-16 03:00:58,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:00:58,857 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 510 transitions. [2021-10-16 03:00:58,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:00:58,858 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 510 transitions. [2021-10-16 03:00:58,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-10-16 03:00:58,867 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:00:58,867 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-16 03:00:58,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 03:00:59,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:00:59,074 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:00:59,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:00:59,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1093648019, now seen corresponding path program 1 times [2021-10-16 03:00:59,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:00:59,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [140466297] [2021-10-16 03:00:59,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:00:59,077 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:00:59,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:00:59,078 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:00:59,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 03:00:59,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:00:59,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 03:00:59,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:00:59,717 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:00:59,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:01:00,641 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:01:00,641 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:01:00,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [140466297] [2021-10-16 03:01:00,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [140466297] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:01:00,642 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:01:00,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-16 03:01:00,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937604939] [2021-10-16 03:01:00,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:01:00,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:01:00,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:01:00,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:01:00,646 INFO L87 Difference]: Start difference. First operand 360 states and 510 transitions. Second operand has 4 states, 4 states have (on average 56.25) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:01:05,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:01:05,137 INFO L93 Difference]: Finished difference Result 1430 states and 2032 transitions. [2021-10-16 03:01:05,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 03:01:05,138 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 3 states have internal predecessors, (225), 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 145 [2021-10-16 03:01:05,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:01:05,147 INFO L225 Difference]: With dead ends: 1430 [2021-10-16 03:01:05,148 INFO L226 Difference]: Without dead ends: 1072 [2021-10-16 03:01:05,149 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:01:05,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2021-10-16 03:01:05,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 1072. [2021-10-16 03:01:05,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1072 states, 1071 states have (on average 1.315592903828198) internal successors, (1409), 1071 states have internal predecessors, (1409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:01:05,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1409 transitions. [2021-10-16 03:01:05,208 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1409 transitions. Word has length 145 [2021-10-16 03:01:05,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:01:05,209 INFO L470 AbstractCegarLoop]: Abstraction has 1072 states and 1409 transitions. [2021-10-16 03:01:05,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:01:05,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1409 transitions. [2021-10-16 03:01:05,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-10-16 03:01:05,223 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:01:05,224 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:01:05,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 03:01:05,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:01:05,436 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:01:05,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:01:05,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1271856538, now seen corresponding path program 1 times [2021-10-16 03:01:05,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:01:05,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [814952315] [2021-10-16 03:01:05,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:01:05,454 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:01:05,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:01:05,455 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:01:05,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 03:01:05,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:01:05,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 03:01:05,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:01:07,045 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:01:07,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:01:11,759 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:01:11,759 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:01:11,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [814952315] [2021-10-16 03:01:11,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [814952315] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:01:11,760 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:01:11,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-16 03:01:11,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294192750] [2021-10-16 03:01:11,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:01:11,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:01:11,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:01:11,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:01:11,763 INFO L87 Difference]: Start difference. First operand 1072 states and 1409 transitions. Second operand has 4 states, 4 states have (on average 84.75) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:01:18,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:01:18,509 INFO L93 Difference]: Finished difference Result 2498 states and 3353 transitions. [2021-10-16 03:01:18,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 03:01:18,510 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 84.75) internal successors, (339), 3 states have internal predecessors, (339), 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 202 [2021-10-16 03:01:18,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:01:18,520 INFO L225 Difference]: With dead ends: 2498 [2021-10-16 03:01:18,520 INFO L226 Difference]: Without dead ends: 1606 [2021-10-16 03:01:18,522 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 400 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:01:18,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2021-10-16 03:01:18,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 1606. [2021-10-16 03:01:18,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1606 states, 1605 states have (on average 1.3121495327102803) internal successors, (2106), 1605 states have internal predecessors, (2106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:01:18,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2106 transitions. [2021-10-16 03:01:18,588 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2106 transitions. Word has length 202 [2021-10-16 03:01:18,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:01:18,589 INFO L470 AbstractCegarLoop]: Abstraction has 1606 states and 2106 transitions. [2021-10-16 03:01:18,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.75) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:01:18,590 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2106 transitions. [2021-10-16 03:01:18,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-10-16 03:01:18,600 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:01:18,601 INFO L512 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:01:18,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 03:01:18,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:01:18,816 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:01:18,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:01:18,817 INFO L82 PathProgramCache]: Analyzing trace with hash 2142917086, now seen corresponding path program 1 times [2021-10-16 03:01:18,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:01:18,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1912666172] [2021-10-16 03:01:18,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:01:18,822 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:01:18,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:01:18,823 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:01:18,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 03:01:19,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:01:19,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 03:01:19,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:01:20,166 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-10-16 03:01:20,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:01:20,725 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-10-16 03:01:20,725 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:01:20,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1912666172] [2021-10-16 03:01:20,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1912666172] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:01:20,726 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:01:20,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-16 03:01:20,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856881685] [2021-10-16 03:01:20,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:01:20,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:01:20,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:01:20,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:01:20,729 INFO L87 Difference]: Start difference. First operand 1606 states and 2106 transitions. Second operand has 4 states, 4 states have (on average 53.75) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:01:25,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:01:25,543 INFO L93 Difference]: Finished difference Result 4456 states and 6006 transitions. [2021-10-16 03:01:25,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 03:01:25,547 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 3 states have internal predecessors, (215), 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 211 [2021-10-16 03:01:25,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:01:25,563 INFO L225 Difference]: With dead ends: 4456 [2021-10-16 03:01:25,563 INFO L226 Difference]: Without dead ends: 3030 [2021-10-16 03:01:25,566 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:01:25,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3030 states. [2021-10-16 03:01:25,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3030 to 2318. [2021-10-16 03:01:25,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2318 states, 2317 states have (on average 1.2529132498921018) internal successors, (2903), 2317 states have internal predecessors, (2903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:01:25,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2318 states to 2318 states and 2903 transitions. [2021-10-16 03:01:25,640 INFO L78 Accepts]: Start accepts. Automaton has 2318 states and 2903 transitions. Word has length 211 [2021-10-16 03:01:25,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:01:25,641 INFO L470 AbstractCegarLoop]: Abstraction has 2318 states and 2903 transitions. [2021-10-16 03:01:25,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:01:25,641 INFO L276 IsEmpty]: Start isEmpty. Operand 2318 states and 2903 transitions. [2021-10-16 03:01:25,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-10-16 03:01:25,645 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:01:25,646 INFO L512 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:01:25,661 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-16 03:01:25,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:01:25,857 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:01:25,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:01:25,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1032338879, now seen corresponding path program 1 times [2021-10-16 03:01:25,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:01:25,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [813678703] [2021-10-16 03:01:25,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:01:25,860 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:01:25,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:01:25,861 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:01:25,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-16 03:01:26,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:01:26,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 03:01:26,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:01:27,876 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-16 03:01:27,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:01:29,249 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-16 03:01:29,249 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:01:29,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [813678703] [2021-10-16 03:01:29,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [813678703] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:01:29,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:01:29,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-16 03:01:29,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105050390] [2021-10-16 03:01:29,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 03:01:29,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:01:29,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 03:01:29,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-16 03:01:29,253 INFO L87 Difference]: Start difference. First operand 2318 states and 2903 transitions. Second operand has 6 states, 6 states have (on average 50.166666666666664) internal successors, (301), 5 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:01:34,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:01:34,001 INFO L93 Difference]: Finished difference Result 4870 states and 6076 transitions. [2021-10-16 03:01:34,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 03:01:34,005 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 50.166666666666664) internal successors, (301), 5 states have internal predecessors, (301), 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 225 [2021-10-16 03:01:34,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:01:34,023 INFO L225 Difference]: With dead ends: 4870 [2021-10-16 03:01:34,023 INFO L226 Difference]: Without dead ends: 2674 [2021-10-16 03:01:34,026 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 444 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 41.9ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-16 03:01:34,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2021-10-16 03:01:34,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2318. [2021-10-16 03:01:34,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2318 states, 2317 states have (on average 1.096245144583513) internal successors, (2540), 2317 states have internal predecessors, (2540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:01:34,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2318 states to 2318 states and 2540 transitions. [2021-10-16 03:01:34,097 INFO L78 Accepts]: Start accepts. Automaton has 2318 states and 2540 transitions. Word has length 225 [2021-10-16 03:01:34,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:01:34,098 INFO L470 AbstractCegarLoop]: Abstraction has 2318 states and 2540 transitions. [2021-10-16 03:01:34,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 50.166666666666664) internal successors, (301), 5 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:01:34,098 INFO L276 IsEmpty]: Start isEmpty. Operand 2318 states and 2540 transitions. [2021-10-16 03:01:34,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2021-10-16 03:01:34,105 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:01:34,105 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:01:34,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-16 03:01:34,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:01:34,323 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:01:34,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:01:34,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1466568101, now seen corresponding path program 1 times [2021-10-16 03:01:34,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:01:34,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [939422863] [2021-10-16 03:01:34,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:01:34,327 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:01:34,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:01:34,328 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:01:34,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-16 03:01:35,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:01:35,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 03:01:35,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:01:37,190 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-10-16 03:01:37,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:01:40,739 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-10-16 03:01:40,741 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:01:40,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [939422863] [2021-10-16 03:01:40,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [939422863] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:01:40,742 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:01:40,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-16 03:01:40,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099018783] [2021-10-16 03:01:40,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:01:40,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:01:40,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:01:40,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:01:40,746 INFO L87 Difference]: Start difference. First operand 2318 states and 2540 transitions. Second operand has 4 states, 4 states have (on average 83.75) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:01:45,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:01:45,096 INFO L93 Difference]: Finished difference Result 5168 states and 5694 transitions. [2021-10-16 03:01:45,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 03:01:45,099 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 83.75) internal successors, (335), 3 states have internal predecessors, (335), 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 370 [2021-10-16 03:01:45,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:01:45,115 INFO L225 Difference]: With dead ends: 5168 [2021-10-16 03:01:45,116 INFO L226 Difference]: Without dead ends: 3030 [2021-10-16 03:01:45,119 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 738 GetRequests, 736 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:01:45,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3030 states. [2021-10-16 03:01:45,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3030 to 2674. [2021-10-16 03:01:45,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2673 states have (on average 1.091657313879536) internal successors, (2918), 2673 states have internal predecessors, (2918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:01:45,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 2918 transitions. [2021-10-16 03:01:45,192 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 2918 transitions. Word has length 370 [2021-10-16 03:01:45,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:01:45,193 INFO L470 AbstractCegarLoop]: Abstraction has 2674 states and 2918 transitions. [2021-10-16 03:01:45,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.75) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:01:45,194 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 2918 transitions. [2021-10-16 03:01:45,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2021-10-16 03:01:45,204 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:01:45,205 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2021-10-16 03:01:45,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-16 03:01:45,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:01:45,421 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:01:45,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:01:45,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1401574794, now seen corresponding path program 1 times [2021-10-16 03:01:45,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:01:45,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [187796431] [2021-10-16 03:01:45,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:01:45,429 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:01:45,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:01:45,430 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:01:45,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-16 03:01:46,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:01:46,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-16 03:01:46,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:01:56,306 INFO L134 CoverageAnalysis]: Checked inductivity of 775 backedges. 255 proven. 416 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-10-16 03:01:56,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:02:21,952 INFO L134 CoverageAnalysis]: Checked inductivity of 775 backedges. 602 proven. 69 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-10-16 03:02:21,953 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:02:21,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [187796431] [2021-10-16 03:02:21,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [187796431] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:02:21,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1216012693] [2021-10-16 03:02:21,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:02:21,953 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 03:02:21,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 03:02:21,954 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 03:02:21,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-10-16 03:02:26,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:02:26,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 03:02:26,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:02:28,035 INFO L134 CoverageAnalysis]: Checked inductivity of 775 backedges. 255 proven. 0 refuted. 0 times theorem prover too weak. 520 trivial. 0 not checked. [2021-10-16 03:02:28,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:02:29,998 INFO L134 CoverageAnalysis]: Checked inductivity of 775 backedges. 255 proven. 0 refuted. 0 times theorem prover too weak. 520 trivial. 0 not checked. [2021-10-16 03:02:29,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1216012693] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:02:29,998 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-16 03:02:29,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [10, 10] total 25 [2021-10-16 03:02:29,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508539842] [2021-10-16 03:02:30,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-16 03:02:30,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:02:30,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-16 03:02:30,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2021-10-16 03:02:30,001 INFO L87 Difference]: Start difference. First operand 2674 states and 2918 transitions. Second operand has 10 states, 10 states have (on average 25.5) internal successors, (255), 10 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:02:33,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:02:33,192 INFO L93 Difference]: Finished difference Result 5396 states and 5899 transitions. [2021-10-16 03:02:33,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 03:02:33,196 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 25.5) internal successors, (255), 10 states have internal predecessors, (255), 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 504 [2021-10-16 03:02:33,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:02:33,212 INFO L225 Difference]: With dead ends: 5396 [2021-10-16 03:02:33,212 INFO L226 Difference]: Without dead ends: 2902 [2021-10-16 03:02:33,215 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2014 GetRequests, 1990 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 1136.3ms TimeCoverageRelationStatistics Valid=145, Invalid=505, Unknown=0, NotChecked=0, Total=650 [2021-10-16 03:02:33,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2902 states. [2021-10-16 03:02:33,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2902 to 2674. [2021-10-16 03:02:33,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2673 states have (on average 1.0909090909090908) internal successors, (2916), 2673 states have internal predecessors, (2916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:02:33,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 2916 transitions. [2021-10-16 03:02:33,279 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 2916 transitions. Word has length 504 [2021-10-16 03:02:33,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:02:33,280 INFO L470 AbstractCegarLoop]: Abstraction has 2674 states and 2916 transitions. [2021-10-16 03:02:33,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 25.5) internal successors, (255), 10 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:02:33,281 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 2916 transitions. [2021-10-16 03:02:33,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2021-10-16 03:02:33,298 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:02:33,298 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:02:33,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-16 03:02:33,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-10-16 03:02:33,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 03:02:33,722 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:02:33,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:02:33,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1577044849, now seen corresponding path program 1 times [2021-10-16 03:02:33,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:02:33,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1084047982] [2021-10-16 03:02:33,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:02:33,725 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:02:33,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:02:33,726 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:02:33,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-16 03:02:36,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:02:37,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-16 03:02:37,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:02:45,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1144 backedges. 560 proven. 416 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2021-10-16 03:02:45,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:03:10,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1144 backedges. 907 proven. 69 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2021-10-16 03:03:10,260 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:03:10,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1084047982] [2021-10-16 03:03:10,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1084047982] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:03:10,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1291253829] [2021-10-16 03:03:10,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:03:10,261 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 03:03:10,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 03:03:10,262 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 03:03:10,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-10-16 03:03:17,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:03:17,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 03:03:17,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:03:18,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1144 backedges. 610 proven. 0 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked. [2021-10-16 03:03:18,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:03:20,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1144 backedges. 610 proven. 0 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked. [2021-10-16 03:03:20,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1291253829] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:03:20,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-16 03:03:20,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [10, 10] total 22 [2021-10-16 03:03:20,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46093826] [2021-10-16 03:03:20,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 03:03:20,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:03:20,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 03:03:20,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=350, Unknown=0, NotChecked=0, Total=462 [2021-10-16 03:03:20,580 INFO L87 Difference]: Start difference. First operand 2674 states and 2916 transitions. Second operand has 6 states, 6 states have (on average 49.0) internal successors, (294), 6 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:03:22,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:03:22,312 INFO L93 Difference]: Finished difference Result 5218 states and 5701 transitions. [2021-10-16 03:03:22,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 03:03:22,316 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 49.0) internal successors, (294), 6 states have internal predecessors, (294), 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 583 [2021-10-16 03:03:22,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:03:22,326 INFO L225 Difference]: With dead ends: 5218 [2021-10-16 03:03:22,327 INFO L226 Difference]: Without dead ends: 2674 [2021-10-16 03:03:22,330 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2328 GetRequests, 2306 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 877.9ms TimeCoverageRelationStatistics Valid=112, Invalid=350, Unknown=0, NotChecked=0, Total=462 [2021-10-16 03:03:22,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2021-10-16 03:03:22,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2674. [2021-10-16 03:03:22,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2673 states have (on average 1.0830527497194165) internal successors, (2895), 2673 states have internal predecessors, (2895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:03:22,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 2895 transitions. [2021-10-16 03:03:22,393 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 2895 transitions. Word has length 583 [2021-10-16 03:03:22,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:03:22,394 INFO L470 AbstractCegarLoop]: Abstraction has 2674 states and 2895 transitions. [2021-10-16 03:03:22,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.0) internal successors, (294), 6 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:03:22,394 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 2895 transitions. [2021-10-16 03:03:22,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2021-10-16 03:03:22,400 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:03:22,401 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-16 03:03:22,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-10-16 03:03:22,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-16 03:03:22,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:03:22,826 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:03:22,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:03:22,827 INFO L82 PathProgramCache]: Analyzing trace with hash -158206931, now seen corresponding path program 1 times [2021-10-16 03:03:22,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:03:22,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [748293737] [2021-10-16 03:03:22,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:03:22,829 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:03:22,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:03:22,830 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:03:22,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-16 03:03:28,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:03:28,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 681 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-16 03:03:28,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:03:34,511 INFO L134 CoverageAnalysis]: Checked inductivity of 937 backedges. 554 proven. 210 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2021-10-16 03:03:34,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:04:02,334 INFO L134 CoverageAnalysis]: Checked inductivity of 937 backedges. 764 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2021-10-16 03:04:02,334 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:04:02,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [748293737] [2021-10-16 03:04:02,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [748293737] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-16 03:04:02,335 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-16 03:04:02,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 17 [2021-10-16 03:04:02,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190774421] [2021-10-16 03:04:02,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-16 03:04:02,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:04:02,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-16 03:04:02,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=171, Unknown=0, NotChecked=0, Total=272 [2021-10-16 03:04:02,337 INFO L87 Difference]: Start difference. First operand 2674 states and 2895 transitions. Second operand has 9 states, 9 states have (on average 48.888888888888886) internal successors, (440), 9 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:04:05,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:04:05,850 INFO L93 Difference]: Finished difference Result 5321 states and 5764 transitions. [2021-10-16 03:04:05,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-16 03:04:05,854 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 48.888888888888886) internal successors, (440), 9 states have internal predecessors, (440), 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 610 [2021-10-16 03:04:05,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:04:05,863 INFO L225 Difference]: With dead ends: 5321 [2021-10-16 03:04:05,863 INFO L226 Difference]: Without dead ends: 2787 [2021-10-16 03:04:05,866 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1218 GetRequests, 1203 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 592.9ms TimeCoverageRelationStatistics Valid=101, Invalid=171, Unknown=0, NotChecked=0, Total=272 [2021-10-16 03:04:05,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2787 states. [2021-10-16 03:04:05,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2787 to 2787. [2021-10-16 03:04:05,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2787 states, 2786 states have (on average 1.0796841349605169) internal successors, (3008), 2786 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:04:05,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2787 states to 2787 states and 3008 transitions. [2021-10-16 03:04:05,925 INFO L78 Accepts]: Start accepts. Automaton has 2787 states and 3008 transitions. Word has length 610 [2021-10-16 03:04:05,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:04:05,926 INFO L470 AbstractCegarLoop]: Abstraction has 2787 states and 3008 transitions. [2021-10-16 03:04:05,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 48.888888888888886) internal successors, (440), 9 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:04:05,926 INFO L276 IsEmpty]: Start isEmpty. Operand 2787 states and 3008 transitions. [2021-10-16 03:04:05,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2021-10-16 03:04:05,932 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:04:05,932 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:04:05,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-16 03:04:06,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:04:06,157 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:04:06,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:04:06,158 INFO L82 PathProgramCache]: Analyzing trace with hash 84590118, now seen corresponding path program 1 times [2021-10-16 03:04:06,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:04:06,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1966882083] [2021-10-16 03:04:06,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:04:06,160 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:04:06,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:04:06,161 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:04:06,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-16 03:04:13,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:04:13,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 719 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 03:04:13,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:04:14,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 650 proven. 353 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-10-16 03:04:14,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:04:16,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 1003 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-10-16 03:04:16,885 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:04:16,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1966882083] [2021-10-16 03:04:16,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1966882083] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-16 03:04:16,886 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-16 03:04:16,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2021-10-16 03:04:16,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767086893] [2021-10-16 03:04:16,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:04:16,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:04:16,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:04:16,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 03:04:16,887 INFO L87 Difference]: Start difference. First operand 2787 states and 3008 transitions. Second operand has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:04:20,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:04:20,687 INFO L93 Difference]: Finished difference Result 6284 states and 6843 transitions. [2021-10-16 03:04:20,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:04:20,687 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 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 637 [2021-10-16 03:04:20,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:04:20,700 INFO L225 Difference]: With dead ends: 6284 [2021-10-16 03:04:20,700 INFO L226 Difference]: Without dead ends: 3677 [2021-10-16 03:04:20,703 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1272 GetRequests, 1269 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 03:04:20,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3677 states. [2021-10-16 03:04:20,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3677 to 3677. [2021-10-16 03:04:20,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3677 states, 3676 states have (on average 1.0745375408052231) internal successors, (3950), 3676 states have internal predecessors, (3950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:04:20,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3677 states to 3677 states and 3950 transitions. [2021-10-16 03:04:20,776 INFO L78 Accepts]: Start accepts. Automaton has 3677 states and 3950 transitions. Word has length 637 [2021-10-16 03:04:20,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:04:20,777 INFO L470 AbstractCegarLoop]: Abstraction has 3677 states and 3950 transitions. [2021-10-16 03:04:20,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:04:20,778 INFO L276 IsEmpty]: Start isEmpty. Operand 3677 states and 3950 transitions. [2021-10-16 03:04:20,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 793 [2021-10-16 03:04:20,785 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:04:20,786 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:04:20,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-16 03:04:21,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:04:21,009 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:04:21,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:04:21,010 INFO L82 PathProgramCache]: Analyzing trace with hash -476160545, now seen corresponding path program 1 times [2021-10-16 03:04:21,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:04:21,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1381566535] [2021-10-16 03:04:21,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:04:21,013 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:04:21,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:04:21,014 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:04:21,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-16 03:04:28,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:04:28,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 884 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 03:04:28,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:04:29,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1857 backedges. 1156 proven. 0 refuted. 0 times theorem prover too weak. 701 trivial. 0 not checked. [2021-10-16 03:04:29,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:04:31,334 INFO L134 CoverageAnalysis]: Checked inductivity of 1857 backedges. 1156 proven. 0 refuted. 0 times theorem prover too weak. 701 trivial. 0 not checked. [2021-10-16 03:04:31,334 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:04:31,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1381566535] [2021-10-16 03:04:31,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1381566535] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:04:31,334 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:04:31,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 03:04:31,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719149223] [2021-10-16 03:04:31,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:04:31,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:04:31,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:04:31,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:04:31,337 INFO L87 Difference]: Start difference. First operand 3677 states and 3950 transitions. Second operand has 4 states, 4 states have (on average 120.5) internal successors, (482), 4 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:04:34,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:04:34,074 INFO L93 Difference]: Finished difference Result 7886 states and 8489 transitions. [2021-10-16 03:04:34,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 03:04:34,081 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 120.5) internal successors, (482), 4 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 792 [2021-10-16 03:04:34,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:04:34,113 INFO L225 Difference]: With dead ends: 7886 [2021-10-16 03:04:34,113 INFO L226 Difference]: Without dead ends: 4389 [2021-10-16 03:04:34,117 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1582 GetRequests, 1580 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:04:34,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4389 states. [2021-10-16 03:04:34,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4389 to 4211. [2021-10-16 03:04:34,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4211 states, 4210 states have (on average 1.057482185273159) internal successors, (4452), 4210 states have internal predecessors, (4452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:04:34,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4211 states to 4211 states and 4452 transitions. [2021-10-16 03:04:34,239 INFO L78 Accepts]: Start accepts. Automaton has 4211 states and 4452 transitions. Word has length 792 [2021-10-16 03:04:34,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:04:34,240 INFO L470 AbstractCegarLoop]: Abstraction has 4211 states and 4452 transitions. [2021-10-16 03:04:34,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 120.5) internal successors, (482), 4 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:04:34,241 INFO L276 IsEmpty]: Start isEmpty. Operand 4211 states and 4452 transitions. [2021-10-16 03:04:34,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 888 [2021-10-16 03:04:34,250 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:04:34,250 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-16 03:04:34,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-16 03:04:34,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:04:34,473 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:04:34,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:04:34,474 INFO L82 PathProgramCache]: Analyzing trace with hash 318517462, now seen corresponding path program 1 times [2021-10-16 03:04:34,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:04:34,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1740176813] [2021-10-16 03:04:34,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:04:34,477 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:04:34,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:04:34,478 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:04:34,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-16 03:04:42,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:04:42,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 986 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 03:04:42,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:04:44,707 INFO L134 CoverageAnalysis]: Checked inductivity of 2395 backedges. 0 proven. 2024 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2021-10-16 03:04:44,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:04:49,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2395 backedges. 1387 proven. 64 refuted. 0 times theorem prover too weak. 944 trivial. 0 not checked. [2021-10-16 03:04:49,250 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:04:49,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1740176813] [2021-10-16 03:04:49,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1740176813] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:04:49,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1001433857] [2021-10-16 03:04:49,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:04:49,251 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 03:04:49,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 03:04:49,252 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 03:04:49,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-10-16 03:05:00,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:05:00,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 986 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 03:05:00,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:05:02,258 INFO L134 CoverageAnalysis]: Checked inductivity of 2395 backedges. 447 proven. 0 refuted. 0 times theorem prover too weak. 1948 trivial. 0 not checked. [2021-10-16 03:05:02,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:05:03,590 INFO L134 CoverageAnalysis]: Checked inductivity of 2395 backedges. 447 proven. 0 refuted. 0 times theorem prover too weak. 1948 trivial. 0 not checked. [2021-10-16 03:05:03,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1001433857] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:05:03,590 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-16 03:05:03,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6, 5] total 12 [2021-10-16 03:05:03,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292466429] [2021-10-16 03:05:03,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:05:03,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:05:03,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:05:03,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-16 03:05:03,598 INFO L87 Difference]: Start difference. First operand 4211 states and 4452 transitions. Second operand has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:05:05,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:05:05,895 INFO L93 Difference]: Finished difference Result 8954 states and 9472 transitions. [2021-10-16 03:05:05,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 03:05:05,898 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 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 887 [2021-10-16 03:05:05,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:05:05,911 INFO L225 Difference]: With dead ends: 8954 [2021-10-16 03:05:05,911 INFO L226 Difference]: Without dead ends: 4923 [2021-10-16 03:05:05,914 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3544 GetRequests, 3534 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 294.2ms TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-16 03:05:05,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4923 states. [2021-10-16 03:05:05,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4923 to 4567. [2021-10-16 03:05:05,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4567 states, 4566 states have (on average 1.0492772667542707) internal successors, (4791), 4566 states have internal predecessors, (4791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:05:05,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4567 states to 4567 states and 4791 transitions. [2021-10-16 03:05:05,969 INFO L78 Accepts]: Start accepts. Automaton has 4567 states and 4791 transitions. Word has length 887 [2021-10-16 03:05:05,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:05:05,970 INFO L470 AbstractCegarLoop]: Abstraction has 4567 states and 4791 transitions. [2021-10-16 03:05:05,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:05:05,971 INFO L276 IsEmpty]: Start isEmpty. Operand 4567 states and 4791 transitions. [2021-10-16 03:05:05,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 976 [2021-10-16 03:05:05,981 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:05:05,982 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-16 03:05:06,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2021-10-16 03:05:06,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-16 03:05:06,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:05:06,409 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:05:06,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:05:06,410 INFO L82 PathProgramCache]: Analyzing trace with hash 539154926, now seen corresponding path program 1 times [2021-10-16 03:05:06,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:05:06,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1096701952] [2021-10-16 03:05:06,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:05:06,415 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:05:06,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:05:06,424 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:05:06,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-16 03:05:14,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:05:14,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 1084 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 03:05:14,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:05:17,718 INFO L134 CoverageAnalysis]: Checked inductivity of 3047 backedges. 511 proven. 2165 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2021-10-16 03:05:17,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:05:22,695 INFO L134 CoverageAnalysis]: Checked inductivity of 3047 backedges. 2015 proven. 88 refuted. 0 times theorem prover too weak. 944 trivial. 0 not checked. [2021-10-16 03:05:22,695 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:05:22,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1096701952] [2021-10-16 03:05:22,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1096701952] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:05:22,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1133464615] [2021-10-16 03:05:22,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:05:22,696 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 03:05:22,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 03:05:22,697 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 03:05:22,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-10-16 03:05:35,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:05:35,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 1084 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 03:05:35,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:05:38,448 INFO L134 CoverageAnalysis]: Checked inductivity of 3047 backedges. 511 proven. 0 refuted. 0 times theorem prover too weak. 2536 trivial. 0 not checked. [2021-10-16 03:05:38,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:05:41,041 INFO L134 CoverageAnalysis]: Checked inductivity of 3047 backedges. 511 proven. 0 refuted. 0 times theorem prover too weak. 2536 trivial. 0 not checked. [2021-10-16 03:05:41,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1133464615] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:05:41,042 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-16 03:05:41,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [6, 5] total 18 [2021-10-16 03:05:41,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392623163] [2021-10-16 03:05:41,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-16 03:05:41,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:05:41,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-16 03:05:41,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2021-10-16 03:05:41,046 INFO L87 Difference]: Start difference. First operand 4567 states and 4791 transitions. Second operand has 10 states, 10 states have (on average 29.2) internal successors, (292), 10 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:05:44,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:05:44,715 INFO L93 Difference]: Finished difference Result 9249 states and 9698 transitions. [2021-10-16 03:05:44,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-16 03:05:44,718 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 29.2) internal successors, (292), 10 states have internal predecessors, (292), 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 975 [2021-10-16 03:05:44,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:05:44,726 INFO L225 Difference]: With dead ends: 9249 [2021-10-16 03:05:44,726 INFO L226 Difference]: Without dead ends: 4862 [2021-10-16 03:05:44,729 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3898 GetRequests, 3881 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 701.7ms TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2021-10-16 03:05:44,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4862 states. [2021-10-16 03:05:44,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4862 to 4389. [2021-10-16 03:05:44,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4389 states, 4388 states have (on average 1.0437556973564266) internal successors, (4580), 4388 states have internal predecessors, (4580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:05:44,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4389 states to 4389 states and 4580 transitions. [2021-10-16 03:05:44,777 INFO L78 Accepts]: Start accepts. Automaton has 4389 states and 4580 transitions. Word has length 975 [2021-10-16 03:05:44,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:05:44,778 INFO L470 AbstractCegarLoop]: Abstraction has 4389 states and 4580 transitions. [2021-10-16 03:05:44,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 29.2) internal successors, (292), 10 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:05:44,778 INFO L276 IsEmpty]: Start isEmpty. Operand 4389 states and 4580 transitions. [2021-10-16 03:05:44,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 978 [2021-10-16 03:05:44,789 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:05:44,790 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-16 03:05:44,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2021-10-16 03:05:45,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-16 03:05:45,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:05:45,205 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:05:45,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:05:45,206 INFO L82 PathProgramCache]: Analyzing trace with hash 292527049, now seen corresponding path program 1 times [2021-10-16 03:05:45,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:05:45,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1620544914] [2021-10-16 03:05:45,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:05:45,218 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:05:45,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:05:45,218 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:05:45,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-16 03:05:54,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:05:54,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 1086 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 03:05:54,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:05:57,584 INFO L134 CoverageAnalysis]: Checked inductivity of 3057 backedges. 511 proven. 2175 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2021-10-16 03:05:57,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:06:02,793 INFO L134 CoverageAnalysis]: Checked inductivity of 3057 backedges. 2023 proven. 90 refuted. 0 times theorem prover too weak. 944 trivial. 0 not checked. [2021-10-16 03:06:02,794 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:06:02,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1620544914] [2021-10-16 03:06:02,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1620544914] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:06:02,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [817674632] [2021-10-16 03:06:02,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:06:02,795 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 03:06:02,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 03:06:02,797 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 03:06:02,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-10-16 03:06:16,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:06:16,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 1086 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 03:06:16,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:06:19,137 INFO L134 CoverageAnalysis]: Checked inductivity of 3057 backedges. 511 proven. 0 refuted. 0 times theorem prover too weak. 2546 trivial. 0 not checked. [2021-10-16 03:06:19,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:06:20,973 INFO L134 CoverageAnalysis]: Checked inductivity of 3057 backedges. 511 proven. 0 refuted. 0 times theorem prover too weak. 2546 trivial. 0 not checked. [2021-10-16 03:06:20,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [817674632] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:06:20,973 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-16 03:06:20,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [6, 5] total 12 [2021-10-16 03:06:20,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460372104] [2021-10-16 03:06:20,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:06:20,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:06:20,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:06:20,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-10-16 03:06:20,977 INFO L87 Difference]: Start difference. First operand 4389 states and 4580 transitions. Second operand has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:06:23,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:06:23,847 INFO L93 Difference]: Finished difference Result 9685 states and 10116 transitions. [2021-10-16 03:06:23,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 03:06:23,848 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 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 977 [2021-10-16 03:06:23,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:06:23,849 INFO L225 Difference]: With dead ends: 9685 [2021-10-16 03:06:23,850 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 03:06:23,856 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3906 GetRequests, 3895 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 369.1ms TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-10-16 03:06:23,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 03:06:23,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 03:06:23,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:06:23,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 03:06:23,857 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 977 [2021-10-16 03:06:23,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:06:23,858 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 03:06:23,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:06:23,858 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 03:06:23,858 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 03:06:23,861 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 03:06:23,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-16 03:06:24,104 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (20)] Ended with exit code 0 [2021-10-16 03:06:24,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 03:06:24,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 03:06:24,284 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:06:24,694 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:06:24,695 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:06:26,036 INFO L857 garLoopResultBuilder]: For program point L762(lines 762 880) no Hoare annotation was computed. [2021-10-16 03:06:26,036 INFO L857 garLoopResultBuilder]: For program point L895(line 895) no Hoare annotation was computed. [2021-10-16 03:06:26,036 INFO L857 garLoopResultBuilder]: For program point L829(lines 829 880) no Hoare annotation was computed. [2021-10-16 03:06:26,036 INFO L857 garLoopResultBuilder]: For program point L631(lines 631 880) no Hoare annotation was computed. [2021-10-16 03:06:26,036 INFO L857 garLoopResultBuilder]: For program point L565(lines 565 880) no Hoare annotation was computed. [2021-10-16 03:06:26,036 INFO L857 garLoopResultBuilder]: For program point L169-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,037 INFO L857 garLoopResultBuilder]: For program point L103-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,037 INFO L857 garLoopResultBuilder]: For program point L37-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,037 INFO L857 garLoopResultBuilder]: For program point L698(lines 698 880) no Hoare annotation was computed. [2021-10-16 03:06:26,037 INFO L857 garLoopResultBuilder]: For program point L500(lines 500 880) no Hoare annotation was computed. [2021-10-16 03:06:26,037 INFO L857 garLoopResultBuilder]: For program point L170(line 170) no Hoare annotation was computed. [2021-10-16 03:06:26,037 INFO L857 garLoopResultBuilder]: For program point L104(line 104) no Hoare annotation was computed. [2021-10-16 03:06:26,037 INFO L857 garLoopResultBuilder]: For program point L38(line 38) no Hoare annotation was computed. [2021-10-16 03:06:26,037 INFO L857 garLoopResultBuilder]: For program point L369(lines 369 880) no Hoare annotation was computed. [2021-10-16 03:06:26,037 INFO L857 garLoopResultBuilder]: For program point L303(lines 303 880) no Hoare annotation was computed. [2021-10-16 03:06:26,038 INFO L857 garLoopResultBuilder]: For program point L436(lines 436 880) no Hoare annotation was computed. [2021-10-16 03:06:26,038 INFO L857 garLoopResultBuilder]: For program point L172-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,038 INFO L857 garLoopResultBuilder]: For program point L106-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,038 INFO L857 garLoopResultBuilder]: For program point L40-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,038 INFO L857 garLoopResultBuilder]: For program point L239(lines 239 880) no Hoare annotation was computed. [2021-10-16 03:06:26,038 INFO L857 garLoopResultBuilder]: For program point L173(line 173) no Hoare annotation was computed. [2021-10-16 03:06:26,038 INFO L857 garLoopResultBuilder]: For program point L107(line 107) no Hoare annotation was computed. [2021-10-16 03:06:26,038 INFO L857 garLoopResultBuilder]: For program point L41(line 41) no Hoare annotation was computed. [2021-10-16 03:06:26,038 INFO L857 garLoopResultBuilder]: For program point L768(lines 768 880) no Hoare annotation was computed. [2021-10-16 03:06:26,038 INFO L857 garLoopResultBuilder]: For program point L636(lines 636 880) no Hoare annotation was computed. [2021-10-16 03:06:26,038 INFO L857 garLoopResultBuilder]: For program point L835(lines 835 880) no Hoare annotation was computed. [2021-10-16 03:06:26,038 INFO L857 garLoopResultBuilder]: For program point L571(lines 571 880) no Hoare annotation was computed. [2021-10-16 03:06:26,039 INFO L857 garLoopResultBuilder]: For program point L505(lines 505 880) no Hoare annotation was computed. [2021-10-16 03:06:26,039 INFO L857 garLoopResultBuilder]: For program point L175-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,039 INFO L857 garLoopResultBuilder]: For program point L109-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,039 INFO L857 garLoopResultBuilder]: For program point L43-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,039 INFO L857 garLoopResultBuilder]: For program point L704(lines 704 880) no Hoare annotation was computed. [2021-10-16 03:06:26,039 INFO L857 garLoopResultBuilder]: For program point L176(line 176) no Hoare annotation was computed. [2021-10-16 03:06:26,039 INFO L857 garLoopResultBuilder]: For program point L110(line 110) no Hoare annotation was computed. [2021-10-16 03:06:26,039 INFO L857 garLoopResultBuilder]: For program point L44(line 44) no Hoare annotation was computed. [2021-10-16 03:06:26,039 INFO L857 garLoopResultBuilder]: For program point L309(lines 309 880) no Hoare annotation was computed. [2021-10-16 03:06:26,040 INFO L857 garLoopResultBuilder]: For program point L442(lines 442 880) no Hoare annotation was computed. [2021-10-16 03:06:26,040 INFO L857 garLoopResultBuilder]: For program point L376(lines 376 880) no Hoare annotation was computed. [2021-10-16 03:06:26,040 INFO L857 garLoopResultBuilder]: For program point L178-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,041 INFO L857 garLoopResultBuilder]: For program point L112-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,041 INFO L857 garLoopResultBuilder]: For program point L46-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,041 INFO L857 garLoopResultBuilder]: For program point L245(lines 245 880) no Hoare annotation was computed. [2021-10-16 03:06:26,041 INFO L857 garLoopResultBuilder]: For program point L179(line 179) no Hoare annotation was computed. [2021-10-16 03:06:26,041 INFO L857 garLoopResultBuilder]: For program point L113(line 113) no Hoare annotation was computed. [2021-10-16 03:06:26,041 INFO L857 garLoopResultBuilder]: For program point L47(line 47) no Hoare annotation was computed. [2021-10-16 03:06:26,042 INFO L857 garLoopResultBuilder]: For program point L774(lines 774 880) no Hoare annotation was computed. [2021-10-16 03:06:26,042 INFO L857 garLoopResultBuilder]: For program point L642(lines 642 880) no Hoare annotation was computed. [2021-10-16 03:06:26,042 INFO L857 garLoopResultBuilder]: For program point L510(lines 510 880) no Hoare annotation was computed. [2021-10-16 03:06:26,042 INFO L857 garLoopResultBuilder]: For program point L841(lines 841 880) no Hoare annotation was computed. [2021-10-16 03:06:26,042 INFO L857 garLoopResultBuilder]: For program point L181-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,042 INFO L857 garLoopResultBuilder]: For program point L115-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,042 INFO L857 garLoopResultBuilder]: For program point L49-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,042 INFO L857 garLoopResultBuilder]: For program point L710(lines 710 880) no Hoare annotation was computed. [2021-10-16 03:06:26,042 INFO L857 garLoopResultBuilder]: For program point L578(lines 578 880) no Hoare annotation was computed. [2021-10-16 03:06:26,042 INFO L857 garLoopResultBuilder]: For program point L182(line 182) no Hoare annotation was computed. [2021-10-16 03:06:26,042 INFO L857 garLoopResultBuilder]: For program point L116(line 116) no Hoare annotation was computed. [2021-10-16 03:06:26,042 INFO L857 garLoopResultBuilder]: For program point L50(line 50) no Hoare annotation was computed. [2021-10-16 03:06:26,043 INFO L857 garLoopResultBuilder]: For program point L315(lines 315 880) no Hoare annotation was computed. [2021-10-16 03:06:26,043 INFO L857 garLoopResultBuilder]: For program point L448(lines 448 880) no Hoare annotation was computed. [2021-10-16 03:06:26,043 INFO L857 garLoopResultBuilder]: For program point L382(lines 382 880) no Hoare annotation was computed. [2021-10-16 03:06:26,043 INFO L857 garLoopResultBuilder]: For program point L184-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,043 INFO L857 garLoopResultBuilder]: For program point L118-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,043 INFO L857 garLoopResultBuilder]: For program point L52-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,043 INFO L857 garLoopResultBuilder]: For program point L251(lines 251 880) no Hoare annotation was computed. [2021-10-16 03:06:26,043 INFO L857 garLoopResultBuilder]: For program point L185(line 185) no Hoare annotation was computed. [2021-10-16 03:06:26,043 INFO L857 garLoopResultBuilder]: For program point L119(line 119) no Hoare annotation was computed. [2021-10-16 03:06:26,044 INFO L857 garLoopResultBuilder]: For program point L53(line 53) no Hoare annotation was computed. [2021-10-16 03:06:26,044 INFO L857 garLoopResultBuilder]: For program point L648(lines 648 880) no Hoare annotation was computed. [2021-10-16 03:06:26,044 INFO L857 garLoopResultBuilder]: For program point L516(lines 516 880) no Hoare annotation was computed. [2021-10-16 03:06:26,044 INFO L857 garLoopResultBuilder]: For program point L847(lines 847 880) no Hoare annotation was computed. [2021-10-16 03:06:26,044 INFO L857 garLoopResultBuilder]: For program point L781(lines 781 880) no Hoare annotation was computed. [2021-10-16 03:06:26,044 INFO L857 garLoopResultBuilder]: For program point L583(lines 583 880) no Hoare annotation was computed. [2021-10-16 03:06:26,044 INFO L857 garLoopResultBuilder]: For program point L187-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,044 INFO L857 garLoopResultBuilder]: For program point L121-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,044 INFO L857 garLoopResultBuilder]: For program point L55-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,044 INFO L857 garLoopResultBuilder]: For program point L716(lines 716 880) no Hoare annotation was computed. [2021-10-16 03:06:26,044 INFO L857 garLoopResultBuilder]: For program point L188(line 188) no Hoare annotation was computed. [2021-10-16 03:06:26,045 INFO L857 garLoopResultBuilder]: For program point L122(line 122) no Hoare annotation was computed. [2021-10-16 03:06:26,045 INFO L857 garLoopResultBuilder]: For program point L56(line 56) no Hoare annotation was computed. [2021-10-16 03:06:26,045 INFO L857 garLoopResultBuilder]: For program point L321(lines 321 880) no Hoare annotation was computed. [2021-10-16 03:06:26,045 INFO L857 garLoopResultBuilder]: For program point L454(lines 454 880) no Hoare annotation was computed. [2021-10-16 03:06:26,045 INFO L857 garLoopResultBuilder]: For program point L388(lines 388 880) no Hoare annotation was computed. [2021-10-16 03:06:26,045 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 03:06:26,045 INFO L857 garLoopResultBuilder]: For program point L190-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,045 INFO L857 garLoopResultBuilder]: For program point L124-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,045 INFO L857 garLoopResultBuilder]: For program point L58-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,045 INFO L857 garLoopResultBuilder]: For program point L257(lines 257 880) no Hoare annotation was computed. [2021-10-16 03:06:26,045 INFO L857 garLoopResultBuilder]: For program point L191(line 191) no Hoare annotation was computed. [2021-10-16 03:06:26,045 INFO L857 garLoopResultBuilder]: For program point L125(line 125) no Hoare annotation was computed. [2021-10-16 03:06:26,045 INFO L857 garLoopResultBuilder]: For program point L59(line 59) no Hoare annotation was computed. [2021-10-16 03:06:26,046 INFO L857 garLoopResultBuilder]: For program point L852(lines 852 880) no Hoare annotation was computed. [2021-10-16 03:06:26,046 INFO L857 garLoopResultBuilder]: For program point L654(lines 654 880) no Hoare annotation was computed. [2021-10-16 03:06:26,046 INFO L857 garLoopResultBuilder]: For program point L522(lines 522 880) no Hoare annotation was computed. [2021-10-16 03:06:26,046 INFO L857 garLoopResultBuilder]: For program point L787(lines 787 880) no Hoare annotation was computed. [2021-10-16 03:06:26,046 INFO L857 garLoopResultBuilder]: For program point L589(lines 589 880) no Hoare annotation was computed. [2021-10-16 03:06:26,046 INFO L857 garLoopResultBuilder]: For program point L193-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,046 INFO L857 garLoopResultBuilder]: For program point L127-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,046 INFO L857 garLoopResultBuilder]: For program point L61-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,046 INFO L857 garLoopResultBuilder]: For program point L722(lines 722 880) no Hoare annotation was computed. [2021-10-16 03:06:26,046 INFO L857 garLoopResultBuilder]: For program point L194(line 194) no Hoare annotation was computed. [2021-10-16 03:06:26,046 INFO L857 garLoopResultBuilder]: For program point L128(line 128) no Hoare annotation was computed. [2021-10-16 03:06:26,046 INFO L857 garLoopResultBuilder]: For program point L62(line 62) no Hoare annotation was computed. [2021-10-16 03:06:26,046 INFO L857 garLoopResultBuilder]: For program point L459(lines 459 880) no Hoare annotation was computed. [2021-10-16 03:06:26,047 INFO L857 garLoopResultBuilder]: For program point L327(lines 327 880) no Hoare annotation was computed. [2021-10-16 03:06:26,047 INFO L857 garLoopResultBuilder]: For program point L394(lines 394 880) no Hoare annotation was computed. [2021-10-16 03:06:26,047 INFO L857 garLoopResultBuilder]: For program point L262(lines 262 880) no Hoare annotation was computed. [2021-10-16 03:06:26,047 INFO L857 garLoopResultBuilder]: For program point L196-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,047 INFO L857 garLoopResultBuilder]: For program point L130-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,047 INFO L857 garLoopResultBuilder]: For program point L64-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,047 INFO L857 garLoopResultBuilder]: For program point L197(line 197) no Hoare annotation was computed. [2021-10-16 03:06:26,047 INFO L857 garLoopResultBuilder]: For program point L131(line 131) no Hoare annotation was computed. [2021-10-16 03:06:26,047 INFO L857 garLoopResultBuilder]: For program point L65(line 65) no Hoare annotation was computed. [2021-10-16 03:06:26,047 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-16 03:06:26,047 INFO L857 garLoopResultBuilder]: For program point L858(lines 858 880) no Hoare annotation was computed. [2021-10-16 03:06:26,047 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 212) no Hoare annotation was computed. [2021-10-16 03:06:26,047 INFO L857 garLoopResultBuilder]: For program point L660(lines 660 880) no Hoare annotation was computed. [2021-10-16 03:06:26,048 INFO L857 garLoopResultBuilder]: For program point L528(lines 528 880) no Hoare annotation was computed. [2021-10-16 03:06:26,048 INFO L857 garLoopResultBuilder]: For program point L793(lines 793 880) no Hoare annotation was computed. [2021-10-16 03:06:26,048 INFO L857 garLoopResultBuilder]: For program point L595(lines 595 880) no Hoare annotation was computed. [2021-10-16 03:06:26,048 INFO L857 garLoopResultBuilder]: For program point L199-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,048 INFO L857 garLoopResultBuilder]: For program point L133-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,048 INFO L857 garLoopResultBuilder]: For program point L67-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,048 INFO L857 garLoopResultBuilder]: For program point L728(lines 728 880) no Hoare annotation was computed. [2021-10-16 03:06:26,048 INFO L857 garLoopResultBuilder]: For program point L464(lines 464 880) no Hoare annotation was computed. [2021-10-16 03:06:26,048 INFO L857 garLoopResultBuilder]: For program point L200(line 200) no Hoare annotation was computed. [2021-10-16 03:06:26,048 INFO L857 garLoopResultBuilder]: For program point L134(line 134) no Hoare annotation was computed. [2021-10-16 03:06:26,048 INFO L857 garLoopResultBuilder]: For program point L68(line 68) no Hoare annotation was computed. [2021-10-16 03:06:26,048 INFO L857 garLoopResultBuilder]: For program point L333(lines 333 880) no Hoare annotation was computed. [2021-10-16 03:06:26,048 INFO L857 garLoopResultBuilder]: For program point L400(lines 400 880) no Hoare annotation was computed. [2021-10-16 03:06:26,049 INFO L857 garLoopResultBuilder]: For program point L268(lines 268 880) no Hoare annotation was computed. [2021-10-16 03:06:26,049 INFO L857 garLoopResultBuilder]: For program point L202-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,049 INFO L857 garLoopResultBuilder]: For program point L136-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,049 INFO L857 garLoopResultBuilder]: For program point L70-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,049 INFO L857 garLoopResultBuilder]: For program point L203(line 203) no Hoare annotation was computed. [2021-10-16 03:06:26,051 INFO L857 garLoopResultBuilder]: For program point L137(line 137) no Hoare annotation was computed. [2021-10-16 03:06:26,051 INFO L857 garLoopResultBuilder]: For program point L71(line 71) no Hoare annotation was computed. [2021-10-16 03:06:26,051 INFO L857 garLoopResultBuilder]: For program point L864(lines 864 880) no Hoare annotation was computed. [2021-10-16 03:06:26,051 INFO L857 garLoopResultBuilder]: For program point L666(lines 666 880) no Hoare annotation was computed. [2021-10-16 03:06:26,052 INFO L857 garLoopResultBuilder]: For program point L534(lines 534 880) no Hoare annotation was computed. [2021-10-16 03:06:26,052 INFO L857 garLoopResultBuilder]: For program point L799(lines 799 880) no Hoare annotation was computed. [2021-10-16 03:06:26,052 INFO L857 garLoopResultBuilder]: For program point L601(lines 601 880) no Hoare annotation was computed. [2021-10-16 03:06:26,052 INFO L857 garLoopResultBuilder]: For program point L205-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,052 INFO L857 garLoopResultBuilder]: For program point L139-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,052 INFO L857 garLoopResultBuilder]: For program point L73-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,052 INFO L857 garLoopResultBuilder]: For program point L734(lines 734 880) no Hoare annotation was computed. [2021-10-16 03:06:26,052 INFO L857 garLoopResultBuilder]: For program point L470(lines 470 880) no Hoare annotation was computed. [2021-10-16 03:06:26,053 INFO L857 garLoopResultBuilder]: For program point L206(line 206) no Hoare annotation was computed. [2021-10-16 03:06:26,053 INFO L857 garLoopResultBuilder]: For program point L140(line 140) no Hoare annotation was computed. [2021-10-16 03:06:26,053 INFO L857 garLoopResultBuilder]: For program point L74(line 74) no Hoare annotation was computed. [2021-10-16 03:06:26,053 INFO L857 garLoopResultBuilder]: For program point L339(lines 339 880) no Hoare annotation was computed. [2021-10-16 03:06:26,053 INFO L857 garLoopResultBuilder]: For program point L406(lines 406 880) no Hoare annotation was computed. [2021-10-16 03:06:26,053 INFO L857 garLoopResultBuilder]: For program point L274(lines 274 880) no Hoare annotation was computed. [2021-10-16 03:06:26,053 INFO L857 garLoopResultBuilder]: For program point L208-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,053 INFO L857 garLoopResultBuilder]: For program point L142-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,053 INFO L857 garLoopResultBuilder]: For program point L76-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,053 INFO L857 garLoopResultBuilder]: For program point L869(lines 869 880) no Hoare annotation was computed. [2021-10-16 03:06:26,053 INFO L857 garLoopResultBuilder]: For program point L209(line 209) no Hoare annotation was computed. [2021-10-16 03:06:26,053 INFO L857 garLoopResultBuilder]: For program point L143(line 143) no Hoare annotation was computed. [2021-10-16 03:06:26,054 INFO L857 garLoopResultBuilder]: For program point L77(line 77) no Hoare annotation was computed. [2021-10-16 03:06:26,054 INFO L857 garLoopResultBuilder]: For program point L672(lines 672 880) no Hoare annotation was computed. [2021-10-16 03:06:26,054 INFO L857 garLoopResultBuilder]: For program point L540(lines 540 880) no Hoare annotation was computed. [2021-10-16 03:06:26,054 INFO L857 garLoopResultBuilder]: For program point L805(lines 805 880) no Hoare annotation was computed. [2021-10-16 03:06:26,054 INFO L857 garLoopResultBuilder]: For program point L607(lines 607 880) no Hoare annotation was computed. [2021-10-16 03:06:26,054 INFO L857 garLoopResultBuilder]: For program point L211-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,054 INFO L857 garLoopResultBuilder]: For program point L145-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,054 INFO L857 garLoopResultBuilder]: For program point L79-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,054 INFO L857 garLoopResultBuilder]: For program point L740(lines 740 880) no Hoare annotation was computed. [2021-10-16 03:06:26,054 INFO L857 garLoopResultBuilder]: For program point L212(line 212) no Hoare annotation was computed. [2021-10-16 03:06:26,054 INFO L857 garLoopResultBuilder]: For program point L146(line 146) no Hoare annotation was computed. [2021-10-16 03:06:26,054 INFO L857 garLoopResultBuilder]: For program point L80(line 80) no Hoare annotation was computed. [2021-10-16 03:06:26,054 INFO L857 garLoopResultBuilder]: For program point L477(lines 477 880) no Hoare annotation was computed. [2021-10-16 03:06:26,055 INFO L857 garLoopResultBuilder]: For program point L345(lines 345 880) no Hoare annotation was computed. [2021-10-16 03:06:26,055 INFO L857 garLoopResultBuilder]: For program point L279(lines 279 880) no Hoare annotation was computed. [2021-10-16 03:06:26,055 INFO L857 garLoopResultBuilder]: For program point L412(lines 412 880) no Hoare annotation was computed. [2021-10-16 03:06:26,055 INFO L857 garLoopResultBuilder]: For program point L148-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,055 INFO L857 garLoopResultBuilder]: For program point L82-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,055 INFO L857 garLoopResultBuilder]: For program point L875(lines 875 880) no Hoare annotation was computed. [2021-10-16 03:06:26,055 INFO L857 garLoopResultBuilder]: For program point L149(line 149) no Hoare annotation was computed. [2021-10-16 03:06:26,056 INFO L857 garLoopResultBuilder]: For program point L83(line 83) no Hoare annotation was computed. [2021-10-16 03:06:26,056 INFO L857 garLoopResultBuilder]: For program point L678(lines 678 880) no Hoare annotation was computed. [2021-10-16 03:06:26,056 INFO L857 garLoopResultBuilder]: For program point L546(lines 546 880) no Hoare annotation was computed. [2021-10-16 03:06:26,056 INFO L857 garLoopResultBuilder]: For program point L811(lines 811 880) no Hoare annotation was computed. [2021-10-16 03:06:26,056 INFO L857 garLoopResultBuilder]: For program point L745(lines 745 880) no Hoare annotation was computed. [2021-10-16 03:06:26,056 INFO L857 garLoopResultBuilder]: For program point L613(lines 613 880) no Hoare annotation was computed. [2021-10-16 03:06:26,057 INFO L857 garLoopResultBuilder]: For program point L151-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,057 INFO L857 garLoopResultBuilder]: For program point L85-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,057 INFO L857 garLoopResultBuilder]: For program point L482(lines 482 880) no Hoare annotation was computed. [2021-10-16 03:06:26,057 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 03:06:26,057 INFO L857 garLoopResultBuilder]: For program point L152(line 152) no Hoare annotation was computed. [2021-10-16 03:06:26,057 INFO L857 garLoopResultBuilder]: For program point L86(line 86) no Hoare annotation was computed. [2021-10-16 03:06:26,058 INFO L857 garLoopResultBuilder]: For program point L351(lines 351 880) no Hoare annotation was computed. [2021-10-16 03:06:26,058 INFO L857 garLoopResultBuilder]: For program point L285(lines 285 880) no Hoare annotation was computed. [2021-10-16 03:06:26,058 INFO L857 garLoopResultBuilder]: For program point L418(lines 418 880) no Hoare annotation was computed. [2021-10-16 03:06:26,058 INFO L857 garLoopResultBuilder]: For program point L154-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,058 INFO L857 garLoopResultBuilder]: For program point L88-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,059 INFO L853 garLoopResultBuilder]: At program point L881(lines 30 882) the Hoare annotation is: (let ((.cse5 (= (_ bv8 32) ~a21~0)) (.cse3 (= (_ bv8 32) ~a15~0)) (.cse6 (not (= ~a21~0 (_ bv9 32)))) (.cse1 (bvsle ~a12~0 (_ bv4294967253 32))) (.cse4 (= (_ bv1 32) ~a24~0)) (.cse2 (= ~a15~0 (_ bv9 32)))) (or (let ((.cse0 (not (bvsge (_ bv11 32) ~a12~0)))) (and (or (not (= (_ bv7 32) ~a21~0)) .cse0) (not .cse1) (or (not (= (_ bv6 32) ~a21~0)) .cse0) .cse2)) (and (or (not (bvslt (_ bv80 32) ~a12~0)) (not .cse3)) (not .cse2) (or (not .cse4) (not .cse5) (not (= (_ bv6 32) ~a15~0)))) (and .cse5 .cse2) (and (bvsge (_ bv80 32) ~a12~0) (bvslt (_ bv11 32) ~a12~0)) (and .cse6 .cse3) (and .cse6 .cse1 .cse4 .cse2))) [2021-10-16 03:06:26,059 INFO L857 garLoopResultBuilder]: For program point L551(lines 551 880) no Hoare annotation was computed. [2021-10-16 03:06:26,060 INFO L857 garLoopResultBuilder]: For program point L221(lines 221 880) no Hoare annotation was computed. [2021-10-16 03:06:26,060 INFO L857 garLoopResultBuilder]: For program point L155(line 155) no Hoare annotation was computed. [2021-10-16 03:06:26,060 INFO L857 garLoopResultBuilder]: For program point L89(line 89) no Hoare annotation was computed. [2021-10-16 03:06:26,060 INFO L857 garLoopResultBuilder]: For program point L684(lines 684 880) no Hoare annotation was computed. [2021-10-16 03:06:26,060 INFO L857 garLoopResultBuilder]: For program point L817(lines 817 880) no Hoare annotation was computed. [2021-10-16 03:06:26,060 INFO L857 garLoopResultBuilder]: For program point L751(lines 751 880) no Hoare annotation was computed. [2021-10-16 03:06:26,060 INFO L857 garLoopResultBuilder]: For program point L619(lines 619 880) no Hoare annotation was computed. [2021-10-16 03:06:26,061 INFO L857 garLoopResultBuilder]: For program point L157-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,061 INFO L857 garLoopResultBuilder]: For program point L91-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,061 INFO L860 garLoopResultBuilder]: At program point L884(lines 884 900) the Hoare annotation is: true [2021-10-16 03:06:26,061 INFO L857 garLoopResultBuilder]: For program point L488(lines 488 880) no Hoare annotation was computed. [2021-10-16 03:06:26,061 INFO L857 garLoopResultBuilder]: For program point L290(lines 290 880) no Hoare annotation was computed. [2021-10-16 03:06:26,061 INFO L857 garLoopResultBuilder]: For program point L158(line 158) no Hoare annotation was computed. [2021-10-16 03:06:26,062 INFO L857 garLoopResultBuilder]: For program point L92(line 92) no Hoare annotation was computed. [2021-10-16 03:06:26,062 INFO L857 garLoopResultBuilder]: For program point L687(lines 687 880) no Hoare annotation was computed. [2021-10-16 03:06:26,062 INFO L857 garLoopResultBuilder]: For program point L357(lines 357 880) no Hoare annotation was computed. [2021-10-16 03:06:26,062 INFO L857 garLoopResultBuilder]: For program point L424(lines 424 880) no Hoare annotation was computed. [2021-10-16 03:06:26,062 INFO L857 garLoopResultBuilder]: For program point L160-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,062 INFO L857 garLoopResultBuilder]: For program point L94-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,063 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-16 03:06:26,063 INFO L857 garLoopResultBuilder]: For program point L557(lines 557 880) no Hoare annotation was computed. [2021-10-16 03:06:26,063 INFO L857 garLoopResultBuilder]: For program point L227(lines 227 880) no Hoare annotation was computed. [2021-10-16 03:06:26,063 INFO L857 garLoopResultBuilder]: For program point L161(line 161) no Hoare annotation was computed. [2021-10-16 03:06:26,063 INFO L857 garLoopResultBuilder]: For program point L95(line 95) no Hoare annotation was computed. [2021-10-16 03:06:26,063 INFO L857 garLoopResultBuilder]: For program point L757(lines 757 880) no Hoare annotation was computed. [2021-10-16 03:06:26,063 INFO L857 garLoopResultBuilder]: For program point L625(lines 625 880) no Hoare annotation was computed. [2021-10-16 03:06:26,064 INFO L857 garLoopResultBuilder]: For program point L163-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,064 INFO L857 garLoopResultBuilder]: For program point L97-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,064 INFO L857 garLoopResultBuilder]: For program point L31(lines 31 33) no Hoare annotation was computed. [2021-10-16 03:06:26,064 INFO L857 garLoopResultBuilder]: For program point L31-2(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,064 INFO L857 garLoopResultBuilder]: For program point L824(lines 824 880) no Hoare annotation was computed. [2021-10-16 03:06:26,066 INFO L853 garLoopResultBuilder]: At program point L890-2(lines 890 899) the Hoare annotation is: (let ((.cse5 (= (_ bv8 32) ~a21~0)) (.cse3 (= (_ bv8 32) ~a15~0)) (.cse6 (not (= ~a21~0 (_ bv9 32)))) (.cse1 (bvsle ~a12~0 (_ bv4294967253 32))) (.cse4 (= (_ bv1 32) ~a24~0)) (.cse2 (= ~a15~0 (_ bv9 32)))) (or (let ((.cse0 (not (bvsge (_ bv11 32) ~a12~0)))) (and (or (not (= (_ bv7 32) ~a21~0)) .cse0) (not .cse1) (or (not (= (_ bv6 32) ~a21~0)) .cse0) .cse2)) (and (or (not (bvslt (_ bv80 32) ~a12~0)) (not .cse3)) (not .cse2) (or (not .cse4) (not .cse5) (not (= (_ bv6 32) ~a15~0)))) (and .cse5 .cse2) (and (bvsge (_ bv80 32) ~a12~0) (bvslt (_ bv11 32) ~a12~0)) (and .cse6 .cse3) (and .cse6 .cse1 .cse4 .cse2))) [2021-10-16 03:06:26,066 INFO L857 garLoopResultBuilder]: For program point L494(lines 494 880) no Hoare annotation was computed. [2021-10-16 03:06:26,066 INFO L857 garLoopResultBuilder]: For program point L296(lines 296 880) no Hoare annotation was computed. [2021-10-16 03:06:26,066 INFO L857 garLoopResultBuilder]: For program point L164(line 164) no Hoare annotation was computed. [2021-10-16 03:06:26,067 INFO L857 garLoopResultBuilder]: For program point L98(line 98) no Hoare annotation was computed. [2021-10-16 03:06:26,067 INFO L857 garLoopResultBuilder]: For program point L32(line 32) no Hoare annotation was computed. [2021-10-16 03:06:26,067 INFO L857 garLoopResultBuilder]: For program point L693(lines 693 880) no Hoare annotation was computed. [2021-10-16 03:06:26,067 INFO L857 garLoopResultBuilder]: For program point L363(lines 363 880) no Hoare annotation was computed. [2021-10-16 03:06:26,067 INFO L857 garLoopResultBuilder]: For program point L562(lines 562 880) no Hoare annotation was computed. [2021-10-16 03:06:26,067 INFO L857 garLoopResultBuilder]: For program point L430(lines 430 880) no Hoare annotation was computed. [2021-10-16 03:06:26,068 INFO L857 garLoopResultBuilder]: For program point L166-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,068 INFO L857 garLoopResultBuilder]: For program point L100-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,068 INFO L857 garLoopResultBuilder]: For program point L34-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 03:06:26,068 INFO L857 garLoopResultBuilder]: For program point L233(lines 233 880) no Hoare annotation was computed. [2021-10-16 03:06:26,068 INFO L857 garLoopResultBuilder]: For program point L167(line 167) no Hoare annotation was computed. [2021-10-16 03:06:26,068 INFO L857 garLoopResultBuilder]: For program point L101(line 101) no Hoare annotation was computed. [2021-10-16 03:06:26,068 INFO L857 garLoopResultBuilder]: For program point L35(line 35) no Hoare annotation was computed. [2021-10-16 03:06:26,078 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 03:06:26,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 03:06:26 BoogieIcfgContainer [2021-10-16 03:06:26,118 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 03:06:26,118 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 03:06:26,119 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 03:06:26,119 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 03:06:26,119 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:00:49" (3/4) ... [2021-10-16 03:06:26,122 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 03:06:26,168 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-16 03:06:26,170 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-16 03:06:26,172 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 03:06:26,174 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 03:06:26,374 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 03:06:26,374 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 03:06:26,376 INFO L168 Benchmark]: Toolchain (without parser) took 341457.82 ms. Allocated memory was 54.5 MB in the beginning and 989.9 MB in the end (delta: 935.3 MB). Free memory was 27.9 MB in the beginning and 453.3 MB in the end (delta: -425.5 MB). Peak memory consumption was 509.6 MB. Max. memory is 16.1 GB. [2021-10-16 03:06:26,376 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 54.5 MB. Free memory was 33.9 MB in the beginning and 33.8 MB in the end (delta: 25.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:06:26,377 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1012.61 ms. Allocated memory was 54.5 MB in the beginning and 73.4 MB in the end (delta: 18.9 MB). Free memory was 27.7 MB in the beginning and 42.6 MB in the end (delta: -15.0 MB). Peak memory consumption was 10.9 MB. Max. memory is 16.1 GB. [2021-10-16 03:06:26,378 INFO L168 Benchmark]: Boogie Procedure Inliner took 105.52 ms. Allocated memory is still 73.4 MB. Free memory was 42.6 MB in the beginning and 36.1 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-16 03:06:26,378 INFO L168 Benchmark]: Boogie Preprocessor took 79.28 ms. Allocated memory is still 73.4 MB. Free memory was 36.1 MB in the beginning and 49.3 MB in the end (delta: -13.2 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. [2021-10-16 03:06:26,379 INFO L168 Benchmark]: RCFGBuilder took 3524.76 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 49.3 MB in the beginning and 38.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 28.9 MB. Max. memory is 16.1 GB. [2021-10-16 03:06:26,379 INFO L168 Benchmark]: TraceAbstraction took 336471.21 ms. Allocated memory was 88.1 MB in the beginning and 989.9 MB in the end (delta: 901.8 MB). Free memory was 38.3 MB in the beginning and 472.2 MB in the end (delta: -433.9 MB). Peak memory consumption was 733.6 MB. Max. memory is 16.1 GB. [2021-10-16 03:06:26,380 INFO L168 Benchmark]: Witness Printer took 255.52 ms. Allocated memory is still 989.9 MB. Free memory was 472.2 MB in the beginning and 453.3 MB in the end (delta: 18.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-16 03:06:26,383 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 54.5 MB. Free memory was 33.9 MB in the beginning and 33.8 MB in the end (delta: 25.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1012.61 ms. Allocated memory was 54.5 MB in the beginning and 73.4 MB in the end (delta: 18.9 MB). Free memory was 27.7 MB in the beginning and 42.6 MB in the end (delta: -15.0 MB). Peak memory consumption was 10.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 105.52 ms. Allocated memory is still 73.4 MB. Free memory was 42.6 MB in the beginning and 36.1 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 79.28 ms. Allocated memory is still 73.4 MB. Free memory was 36.1 MB in the beginning and 49.3 MB in the end (delta: -13.2 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. * RCFGBuilder took 3524.76 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 49.3 MB in the beginning and 38.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 28.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 336471.21 ms. Allocated memory was 88.1 MB in the beginning and 989.9 MB in the end (delta: 901.8 MB). Free memory was 38.3 MB in the beginning and 472.2 MB in the end (delta: -433.9 MB). Peak memory consumption was 733.6 MB. Max. memory is 16.1 GB. * Witness Printer took 255.52 ms. Allocated memory is still 989.9 MB. Free memory was 472.2 MB in the beginning and 453.3 MB in the end (delta: 18.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 212]: 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, 245 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 336354.4ms, OverallIterations: 14, TraceHistogramMax: 9, EmptinessCheckTime: 133.2ms, AutomataDifference: 57289.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 1756.1ms, InitialAbstractionConstructionTime: 16.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1204 SDtfs, 3670 SDslu, 183 SDs, 0 SdLazy, 12043 SolverSat, 1463 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 48877.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22188 GetRequests, 22070 SyntacticMatches, 2 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 466 ImplicationChecksByTransitivity, 4143.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=4567occurred in iteration=12, InterpolantAutomatonStates: 71, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 878.6ms AutomataMinimizationTime, 14 MinimizatonAttempts, 2837 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 76 NumberOfFragments, 181 HoareAnnotationTreeSize, 3 FomulaSimplifications, 6328 FormulaSimplificationTreeSizeReduction, 565.7ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 4908 FormulaSimplificationTreeSizeReductionInter, 1182.0ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 569.5ms SsaConstructionTime, 4809.2ms SatisfiabilityAnalysisTime, 170929.1ms InterpolantComputationTime, 11110 NumberOfCodeBlocks, 11110 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 22182 ConstructedInterpolants, 0 QuantifiedInterpolants, 129901 SizeOfPredicates, 58 NumberOfNonLiveVariables, 12571 ConjunctsInSsa, 112 ConjunctsInUnsatCore, 38 InterpolantComputations, 26 PerfectInterpolantSequences, 43519/51658 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: 30]: Loop Invariant Derived loop invariant: ((((((((!(7bv32 == a21) || !~bvsge32(11bv32, a12)) && !~bvsle32(a12, 4294967253bv32)) && (!(6bv32 == a21) || !~bvsge32(11bv32, a12))) && a15 == 9bv32) || (((!~bvslt32(80bv32, a12) || !(8bv32 == a15)) && !(a15 == 9bv32)) && ((!(1bv32 == a24) || !(8bv32 == a21)) || !(6bv32 == a15)))) || (8bv32 == a21 && a15 == 9bv32)) || (~bvsge32(80bv32, a12) && ~bvslt32(11bv32, a12))) || (!(a21 == 9bv32) && 8bv32 == a15)) || (((!(a21 == 9bv32) && ~bvsle32(a12, 4294967253bv32)) && 1bv32 == a24) && a15 == 9bv32) - InvariantResult [Line: 884]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 890]: Loop Invariant Derived loop invariant: ((((((((!(7bv32 == a21) || !~bvsge32(11bv32, a12)) && !~bvsle32(a12, 4294967253bv32)) && (!(6bv32 == a21) || !~bvsge32(11bv32, a12))) && a15 == 9bv32) || (((!~bvslt32(80bv32, a12) || !(8bv32 == a15)) && !(a15 == 9bv32)) && ((!(1bv32 == a24) || !(8bv32 == a21)) || !(6bv32 == a15)))) || (8bv32 == a21 && a15 == 9bv32)) || (~bvsge32(80bv32, a12) && ~bvslt32(11bv32, a12))) || (!(a21 == 9bv32) && 8bv32 == a15)) || (((!(a21 == 9bv32) && ~bvsle32(a12, 4294967253bv32)) && 1bv32 == a24) && a15 == 9bv32) RESULT: Ultimate proved your program to be correct! [2021-10-16 03:06:26,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbc7c6ab-dee9-40e8-8ca7-fdada4b1604a/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...