./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem03_label33.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_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/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_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem03_label33.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/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_5834f4af-4359-4496-a8cf-495b3f64d4ae/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 b936499c618953079e53bf3f0c3afd5dfbaafbc2 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/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_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem03_label33.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/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_5834f4af-4359-4496-a8cf-495b3f64d4ae/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 b936499c618953079e53bf3f0c3afd5dfbaafbc2 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 02:36:47,145 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:36:47,148 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:36:47,204 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:36:47,205 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:36:47,207 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:36:47,210 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:36:47,213 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:36:47,216 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:36:47,222 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:36:47,224 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:36:47,228 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:36:47,229 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:36:47,237 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:36:47,240 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:36:47,244 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:36:47,245 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:36:47,247 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:36:47,250 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:36:47,254 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:36:47,256 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:36:47,259 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:36:47,261 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:36:47,262 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:36:47,268 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:36:47,269 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:36:47,269 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:36:47,271 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:36:47,272 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:36:47,274 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:36:47,275 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:36:47,276 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:36:47,278 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:36:47,280 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:36:47,282 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:36:47,282 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:36:47,283 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:36:47,284 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:36:47,285 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:36:47,286 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:36:47,287 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:36:47,289 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:36:47,324 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:36:47,325 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:36:47,326 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:36:47,327 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:36:47,327 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:36:47,328 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:36:47,328 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:36:47,329 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:36:47,329 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:36:47,330 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:36:47,330 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:36:47,330 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:36:47,331 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:36:47,331 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:36:47,332 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:36:47,333 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:36:47,333 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:36:47,334 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:36:47,334 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:36:47,335 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:36:47,335 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:36:47,335 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:36:47,336 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:36:47,336 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:36:47,337 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:36:47,337 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:36:47,337 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:36:47,338 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:36:47,338 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:36:47,339 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:36:47,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:36:47,340 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:36:47,340 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:36:47,341 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:36:47,341 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:36:47,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:36:47,342 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:36:47,342 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:36:47,342 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:36:47,343 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_5834f4af-4359-4496-a8cf-495b3f64d4ae/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b936499c618953079e53bf3f0c3afd5dfbaafbc2 [2021-10-16 02:36:47,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:36:47,769 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:36:47,772 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:36:47,774 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:36:47,775 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:36:47,777 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/eca-rers2012/Problem03_label33.c [2021-10-16 02:36:47,886 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/data/96d91cd30/978e7c97eb854f2ab41fbbc5a490b35f/FLAGc27b5b470 [2021-10-16 02:36:48,769 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:36:48,770 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/sv-benchmarks/c/eca-rers2012/Problem03_label33.c [2021-10-16 02:36:48,803 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/data/96d91cd30/978e7c97eb854f2ab41fbbc5a490b35f/FLAGc27b5b470 [2021-10-16 02:36:48,879 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/data/96d91cd30/978e7c97eb854f2ab41fbbc5a490b35f [2021-10-16 02:36:48,882 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:36:48,885 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:36:48,888 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:36:48,888 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:36:48,894 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:36:48,895 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:36:48" (1/1) ... [2021-10-16 02:36:48,898 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@514e8c02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:36:48, skipping insertion in model container [2021-10-16 02:36:48,898 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:36:48" (1/1) ... [2021-10-16 02:36:48,907 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:36:49,030 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:36:49,917 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_5834f4af-4359-4496-a8cf-495b3f64d4ae/sv-benchmarks/c/eca-rers2012/Problem03_label33.c[55678,55691] [2021-10-16 02:36:49,980 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:36:49,993 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:36:50,333 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_5834f4af-4359-4496-a8cf-495b3f64d4ae/sv-benchmarks/c/eca-rers2012/Problem03_label33.c[55678,55691] [2021-10-16 02:36:50,353 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:36:50,377 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:36:50,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:36:50 WrapperNode [2021-10-16 02:36:50,378 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:36:50,379 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:36:50,380 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:36:50,380 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:36:50,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:36:50" (1/1) ... [2021-10-16 02:36:50,439 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:36:50" (1/1) ... [2021-10-16 02:36:50,584 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:36:50,586 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:36:50,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:36:50,587 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:36:50,599 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:36:50" (1/1) ... [2021-10-16 02:36:50,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:36:50" (1/1) ... [2021-10-16 02:36:50,612 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:36:50" (1/1) ... [2021-10-16 02:36:50,613 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:36:50" (1/1) ... [2021-10-16 02:36:50,750 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:36:50" (1/1) ... [2021-10-16 02:36:50,798 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:36:50" (1/1) ... [2021-10-16 02:36:50,810 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:36:50" (1/1) ... [2021-10-16 02:36:50,853 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:36:50,872 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:36:50,872 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:36:50,873 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:36:50,876 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:36:50" (1/1) ... [2021-10-16 02:36:50,898 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:36:50,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:36:50,928 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:36:50,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:36:50,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:36:50,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:36:50,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:36:50,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:36:54,681 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:36:54,682 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-16 02:36:54,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:36:54 BoogieIcfgContainer [2021-10-16 02:36:54,687 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:36:54,692 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:36:54,692 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:36:54,697 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:36:54,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:36:48" (1/3) ... [2021-10-16 02:36:54,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76f184f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:36:54, skipping insertion in model container [2021-10-16 02:36:54,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:36:50" (2/3) ... [2021-10-16 02:36:54,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76f184f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:36:54, skipping insertion in model container [2021-10-16 02:36:54,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:36:54" (3/3) ... [2021-10-16 02:36:54,702 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label33.c [2021-10-16 02:36:54,710 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:36:54,710 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:36:54,801 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:36:54,812 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 02:36:54,813 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:36:54,843 INFO L276 IsEmpty]: Start isEmpty. Operand has 148 states, 146 states have (on average 1.9726027397260273) internal successors, (288), 147 states have internal predecessors, (288), 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 02:36:54,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-10-16 02:36:54,874 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:36:54,875 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:36:54,876 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:36:54,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:36:54,884 INFO L82 PathProgramCache]: Analyzing trace with hash -1724865544, now seen corresponding path program 1 times [2021-10-16 02:36:54,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:36:54,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897207212] [2021-10-16 02:36:54,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:36:54,908 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:36:55,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:36:55,821 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 02:36:55,822 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:36:55,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897207212] [2021-10-16 02:36:55,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897207212] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:36:55,824 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:36:55,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:36:55,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902318472] [2021-10-16 02:36:55,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:36:55,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:36:55,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:36:55,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:36:55,877 INFO L87 Difference]: Start difference. First operand has 148 states, 146 states have (on average 1.9726027397260273) internal successors, (288), 147 states have internal predecessors, (288), 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 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:36:57,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:36:57,227 INFO L93 Difference]: Finished difference Result 440 states and 860 transitions. [2021-10-16 02:36:57,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:36:57,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2021-10-16 02:36:57,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:36:57,249 INFO L225 Difference]: With dead ends: 440 [2021-10-16 02:36:57,249 INFO L226 Difference]: Without dead ends: 289 [2021-10-16 02:36:57,254 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:36:57,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-10-16 02:36:57,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2021-10-16 02:36:57,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 288 states have (on average 1.90625) internal successors, (549), 288 states have internal predecessors, (549), 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 02:36:57,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 549 transitions. [2021-10-16 02:36:57,347 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 549 transitions. Word has length 143 [2021-10-16 02:36:57,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:36:57,348 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 549 transitions. [2021-10-16 02:36:57,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:36:57,349 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 549 transitions. [2021-10-16 02:36:57,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-10-16 02:36:57,355 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:36:57,355 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:36:57,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:36:57,356 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:36:57,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:36:57,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1190292992, now seen corresponding path program 1 times [2021-10-16 02:36:57,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:36:57,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314741411] [2021-10-16 02:36:57,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:36:57,358 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:36:57,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:36:57,530 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:36:57,530 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:36:57,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314741411] [2021-10-16 02:36:57,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314741411] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:36:57,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:36:57,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:36:57,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365019211] [2021-10-16 02:36:57,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:36:57,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:36:57,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:36:57,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:36:57,541 INFO L87 Difference]: Start difference. First operand 289 states and 549 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 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 02:36:58,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:36:58,546 INFO L93 Difference]: Finished difference Result 863 states and 1644 transitions. [2021-10-16 02:36:58,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:36:58,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 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 148 [2021-10-16 02:36:58,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:36:58,553 INFO L225 Difference]: With dead ends: 863 [2021-10-16 02:36:58,553 INFO L226 Difference]: Without dead ends: 575 [2021-10-16 02:36:58,556 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:36:58,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2021-10-16 02:36:58,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 575. [2021-10-16 02:36:58,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 574 states have (on average 1.740418118466899) internal successors, (999), 574 states have internal predecessors, (999), 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 02:36:58,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 999 transitions. [2021-10-16 02:36:58,602 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 999 transitions. Word has length 148 [2021-10-16 02:36:58,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:36:58,603 INFO L470 AbstractCegarLoop]: Abstraction has 575 states and 999 transitions. [2021-10-16 02:36:58,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 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 02:36:58,604 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 999 transitions. [2021-10-16 02:36:58,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-10-16 02:36:58,612 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:36:58,613 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:36:58,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 02:36:58,613 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:36:58,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:36:58,614 INFO L82 PathProgramCache]: Analyzing trace with hash -801827906, now seen corresponding path program 1 times [2021-10-16 02:36:58,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:36:58,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398623178] [2021-10-16 02:36:58,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:36:58,615 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:36:58,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:36:58,737 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-16 02:36:58,737 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:36:58,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398623178] [2021-10-16 02:36:58,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398623178] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:36:58,738 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:36:58,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:36:58,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119147298] [2021-10-16 02:36:58,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:36:58,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:36:58,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:36:58,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:36:58,741 INFO L87 Difference]: Start difference. First operand 575 states and 999 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 02:36:59,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:36:59,790 INFO L93 Difference]: Finished difference Result 1721 states and 2994 transitions. [2021-10-16 02:36:59,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:36:59,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 163 [2021-10-16 02:36:59,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:36:59,804 INFO L225 Difference]: With dead ends: 1721 [2021-10-16 02:36:59,805 INFO L226 Difference]: Without dead ends: 1147 [2021-10-16 02:36:59,809 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:36:59,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2021-10-16 02:36:59,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 1147. [2021-10-16 02:36:59,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1147 states, 1146 states have (on average 1.4764397905759161) internal successors, (1692), 1146 states have internal predecessors, (1692), 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 02:36:59,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 1692 transitions. [2021-10-16 02:36:59,929 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 1692 transitions. Word has length 163 [2021-10-16 02:36:59,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:36:59,929 INFO L470 AbstractCegarLoop]: Abstraction has 1147 states and 1692 transitions. [2021-10-16 02:36:59,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 02:36:59,930 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 1692 transitions. [2021-10-16 02:36:59,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-10-16 02:36:59,938 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:36:59,938 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:36:59,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-16 02:36:59,939 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:36:59,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:36:59,943 INFO L82 PathProgramCache]: Analyzing trace with hash -2058066157, now seen corresponding path program 1 times [2021-10-16 02:36:59,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:36:59,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205634007] [2021-10-16 02:36:59,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:36:59,945 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:36:59,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:37:00,045 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:37:00,045 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:37:00,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205634007] [2021-10-16 02:37:00,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205634007] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:37:00,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:37:00,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:37:00,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215725500] [2021-10-16 02:37:00,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:37:00,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:37:00,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:37:00,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:37:00,050 INFO L87 Difference]: Start difference. First operand 1147 states and 1692 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 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 02:37:01,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:37:01,068 INFO L93 Difference]: Finished difference Result 3439 states and 5074 transitions. [2021-10-16 02:37:01,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:37:01,069 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2021-10-16 02:37:01,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:37:01,087 INFO L225 Difference]: With dead ends: 3439 [2021-10-16 02:37:01,087 INFO L226 Difference]: Without dead ends: 2293 [2021-10-16 02:37:01,090 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:37:01,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2293 states. [2021-10-16 02:37:01,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2293 to 2291. [2021-10-16 02:37:01,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2291 states, 2290 states have (on average 1.456768558951965) internal successors, (3336), 2290 states have internal predecessors, (3336), 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 02:37:01,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2291 states to 2291 states and 3336 transitions. [2021-10-16 02:37:01,184 INFO L78 Accepts]: Start accepts. Automaton has 2291 states and 3336 transitions. Word has length 166 [2021-10-16 02:37:01,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:37:01,184 INFO L470 AbstractCegarLoop]: Abstraction has 2291 states and 3336 transitions. [2021-10-16 02:37:01,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 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 02:37:01,185 INFO L276 IsEmpty]: Start isEmpty. Operand 2291 states and 3336 transitions. [2021-10-16 02:37:01,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-10-16 02:37:01,194 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:37:01,194 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:37:01,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-16 02:37:01,195 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:37:01,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:37:01,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1145007939, now seen corresponding path program 1 times [2021-10-16 02:37:01,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:37:01,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404239978] [2021-10-16 02:37:01,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:37:01,198 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:37:01,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:37:01,362 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:37:01,362 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:37:01,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404239978] [2021-10-16 02:37:01,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404239978] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:37:01,363 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:37:01,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:37:01,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467403175] [2021-10-16 02:37:01,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:37:01,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:37:01,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:37:01,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:37:01,367 INFO L87 Difference]: Start difference. First operand 2291 states and 3336 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 2 states have internal predecessors, (169), 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 02:37:02,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:37:02,426 INFO L93 Difference]: Finished difference Result 6869 states and 10005 transitions. [2021-10-16 02:37:02,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:37:02,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 2 states have internal predecessors, (169), 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 169 [2021-10-16 02:37:02,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:37:02,464 INFO L225 Difference]: With dead ends: 6869 [2021-10-16 02:37:02,464 INFO L226 Difference]: Without dead ends: 4579 [2021-10-16 02:37:02,469 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:37:02,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4579 states. [2021-10-16 02:37:02,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4579 to 4007. [2021-10-16 02:37:02,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4007 states, 4006 states have (on average 1.4767848227658513) internal successors, (5916), 4006 states have internal predecessors, (5916), 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 02:37:02,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4007 states to 4007 states and 5916 transitions. [2021-10-16 02:37:02,642 INFO L78 Accepts]: Start accepts. Automaton has 4007 states and 5916 transitions. Word has length 169 [2021-10-16 02:37:02,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:37:02,645 INFO L470 AbstractCegarLoop]: Abstraction has 4007 states and 5916 transitions. [2021-10-16 02:37:02,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 2 states have internal predecessors, (169), 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 02:37:02,645 INFO L276 IsEmpty]: Start isEmpty. Operand 4007 states and 5916 transitions. [2021-10-16 02:37:02,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-10-16 02:37:02,659 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:37:02,659 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:37:02,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-16 02:37:02,660 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:37:02,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:37:02,660 INFO L82 PathProgramCache]: Analyzing trace with hash 913287419, now seen corresponding path program 1 times [2021-10-16 02:37:02,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:37:02,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617931262] [2021-10-16 02:37:02,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:37:02,662 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:37:02,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:37:02,796 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-16 02:37:02,801 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:37:02,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617931262] [2021-10-16 02:37:02,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617931262] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:37:02,801 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:37:02,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:37:02,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301844398] [2021-10-16 02:37:02,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:37:02,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:37:02,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:37:02,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:37:02,813 INFO L87 Difference]: Start difference. First operand 4007 states and 5916 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:37:03,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:37:03,425 INFO L93 Difference]: Finished difference Result 8013 states and 11831 transitions. [2021-10-16 02:37:03,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:37:03,426 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2021-10-16 02:37:03,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:37:03,457 INFO L225 Difference]: With dead ends: 8013 [2021-10-16 02:37:03,458 INFO L226 Difference]: Without dead ends: 4007 [2021-10-16 02:37:03,525 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:37:03,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4007 states. [2021-10-16 02:37:03,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4007 to 4007. [2021-10-16 02:37:03,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4007 states, 4006 states have (on average 1.4226160758861708) internal successors, (5699), 4006 states have internal predecessors, (5699), 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 02:37:03,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4007 states to 4007 states and 5699 transitions. [2021-10-16 02:37:03,682 INFO L78 Accepts]: Start accepts. Automaton has 4007 states and 5699 transitions. Word has length 176 [2021-10-16 02:37:03,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:37:03,682 INFO L470 AbstractCegarLoop]: Abstraction has 4007 states and 5699 transitions. [2021-10-16 02:37:03,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:37:03,683 INFO L276 IsEmpty]: Start isEmpty. Operand 4007 states and 5699 transitions. [2021-10-16 02:37:03,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-10-16 02:37:03,696 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:37:03,697 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:37:03,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-16 02:37:03,698 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:37:03,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:37:03,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1557827459, now seen corresponding path program 1 times [2021-10-16 02:37:03,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:37:03,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422019011] [2021-10-16 02:37:03,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:37:03,707 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:37:03,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:37:03,846 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-16 02:37:03,846 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:37:03,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422019011] [2021-10-16 02:37:03,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422019011] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:37:03,848 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:37:03,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:37:03,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436463134] [2021-10-16 02:37:03,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:37:03,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:37:03,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:37:03,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:37:03,851 INFO L87 Difference]: Start difference. First operand 4007 states and 5699 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 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 02:37:04,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:37:04,842 INFO L93 Difference]: Finished difference Result 10875 states and 15666 transitions. [2021-10-16 02:37:04,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:37:04,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 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 184 [2021-10-16 02:37:04,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:37:04,898 INFO L225 Difference]: With dead ends: 10875 [2021-10-16 02:37:04,898 INFO L226 Difference]: Without dead ends: 6869 [2021-10-16 02:37:04,905 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:37:04,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6869 states. [2021-10-16 02:37:05,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6869 to 6724. [2021-10-16 02:37:05,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6724 states, 6723 states have (on average 1.450989141752194) internal successors, (9755), 6723 states have internal predecessors, (9755), 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 02:37:05,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6724 states to 6724 states and 9755 transitions. [2021-10-16 02:37:05,220 INFO L78 Accepts]: Start accepts. Automaton has 6724 states and 9755 transitions. Word has length 184 [2021-10-16 02:37:05,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:37:05,222 INFO L470 AbstractCegarLoop]: Abstraction has 6724 states and 9755 transitions. [2021-10-16 02:37:05,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 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 02:37:05,223 INFO L276 IsEmpty]: Start isEmpty. Operand 6724 states and 9755 transitions. [2021-10-16 02:37:05,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-10-16 02:37:05,239 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:37:05,239 INFO L512 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:37:05,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-16 02:37:05,241 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:37:05,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:37:05,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1381030440, now seen corresponding path program 1 times [2021-10-16 02:37:05,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:37:05,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792927723] [2021-10-16 02:37:05,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:37:05,243 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:37:05,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:37:05,339 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-16 02:37:05,339 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:37:05,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792927723] [2021-10-16 02:37:05,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792927723] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:37:05,340 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:37:05,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:37:05,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133979413] [2021-10-16 02:37:05,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:37:05,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:37:05,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:37:05,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:37:05,343 INFO L87 Difference]: Start difference. First operand 6724 states and 9755 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 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 02:37:06,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:37:06,319 INFO L93 Difference]: Finished difference Result 15449 states and 22395 transitions. [2021-10-16 02:37:06,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:37:06,320 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 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 188 [2021-10-16 02:37:06,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:37:06,375 INFO L225 Difference]: With dead ends: 15449 [2021-10-16 02:37:06,375 INFO L226 Difference]: Without dead ends: 8726 [2021-10-16 02:37:06,387 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:37:06,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8726 states. [2021-10-16 02:37:06,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8726 to 8726. [2021-10-16 02:37:06,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8726 states, 8725 states have (on average 1.4230372492836676) internal successors, (12416), 8725 states have internal predecessors, (12416), 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 02:37:06,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8726 states to 8726 states and 12416 transitions. [2021-10-16 02:37:06,730 INFO L78 Accepts]: Start accepts. Automaton has 8726 states and 12416 transitions. Word has length 188 [2021-10-16 02:37:06,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:37:06,731 INFO L470 AbstractCegarLoop]: Abstraction has 8726 states and 12416 transitions. [2021-10-16 02:37:06,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 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 02:37:06,732 INFO L276 IsEmpty]: Start isEmpty. Operand 8726 states and 12416 transitions. [2021-10-16 02:37:06,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-10-16 02:37:06,753 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:37:06,753 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:37:06,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-16 02:37:06,754 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:37:06,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:37:06,755 INFO L82 PathProgramCache]: Analyzing trace with hash -270748635, now seen corresponding path program 1 times [2021-10-16 02:37:06,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:37:06,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786309560] [2021-10-16 02:37:06,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:37:06,756 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:37:06,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:37:06,869 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 50 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-16 02:37:06,870 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:37:06,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786309560] [2021-10-16 02:37:06,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786309560] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:37:06,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469352237] [2021-10-16 02:37:06,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:37:06,875 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:37:06,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:37:06,878 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:37:06,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 02:37:07,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:37:07,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:37:07,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:37:07,750 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-10-16 02:37:07,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:37:08,450 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-10-16 02:37:08,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469352237] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:37:08,452 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-16 02:37:08,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [3] total 4 [2021-10-16 02:37:08,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775125087] [2021-10-16 02:37:08,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:37:08,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:37:08,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:37:08,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:37:08,457 INFO L87 Difference]: Start difference. First operand 8726 states and 12416 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 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 02:37:09,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:37:09,669 INFO L93 Difference]: Finished difference Result 21598 states and 31588 transitions. [2021-10-16 02:37:09,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:37:09,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 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 195 [2021-10-16 02:37:09,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:37:09,711 INFO L225 Difference]: With dead ends: 21598 [2021-10-16 02:37:09,712 INFO L226 Difference]: Without dead ends: 13016 [2021-10-16 02:37:09,727 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 387 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 146.7ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:37:09,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13016 states. [2021-10-16 02:37:10,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13016 to 13016. [2021-10-16 02:37:10,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13016 states, 13015 states have (on average 1.3306953515174798) internal successors, (17319), 13015 states have internal predecessors, (17319), 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 02:37:10,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13016 states to 13016 states and 17319 transitions. [2021-10-16 02:37:10,156 INFO L78 Accepts]: Start accepts. Automaton has 13016 states and 17319 transitions. Word has length 195 [2021-10-16 02:37:10,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:37:10,157 INFO L470 AbstractCegarLoop]: Abstraction has 13016 states and 17319 transitions. [2021-10-16 02:37:10,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 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 02:37:10,158 INFO L276 IsEmpty]: Start isEmpty. Operand 13016 states and 17319 transitions. [2021-10-16 02:37:10,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-10-16 02:37:10,179 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:37:10,180 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, 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] [2021-10-16 02:37:10,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:37:10,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:37:10,396 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:37:10,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:37:10,396 INFO L82 PathProgramCache]: Analyzing trace with hash -496358475, now seen corresponding path program 1 times [2021-10-16 02:37:10,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:37:10,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385065508] [2021-10-16 02:37:10,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:37:10,397 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:37:10,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:37:10,541 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:37:10,542 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:37:10,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385065508] [2021-10-16 02:37:10,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385065508] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:37:10,542 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:37:10,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:37:10,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310453384] [2021-10-16 02:37:10,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:37:10,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:37:10,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:37:10,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:37:10,546 INFO L87 Difference]: Start difference. First operand 13016 states and 17319 transitions. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 2 states have internal predecessors, (214), 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 02:37:11,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:37:11,680 INFO L93 Difference]: Finished difference Result 27747 states and 36847 transitions. [2021-10-16 02:37:11,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:37:11,681 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 2 states have internal predecessors, (214), 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 214 [2021-10-16 02:37:11,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:37:11,873 INFO L225 Difference]: With dead ends: 27747 [2021-10-16 02:37:11,876 INFO L226 Difference]: Without dead ends: 15161 [2021-10-16 02:37:11,902 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:37:11,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15161 states. [2021-10-16 02:37:12,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15161 to 15161. [2021-10-16 02:37:12,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15161 states, 15160 states have (on average 1.316688654353562) internal successors, (19961), 15160 states have internal predecessors, (19961), 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 02:37:12,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15161 states to 15161 states and 19961 transitions. [2021-10-16 02:37:12,377 INFO L78 Accepts]: Start accepts. Automaton has 15161 states and 19961 transitions. Word has length 214 [2021-10-16 02:37:12,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:37:12,378 INFO L470 AbstractCegarLoop]: Abstraction has 15161 states and 19961 transitions. [2021-10-16 02:37:12,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 2 states have internal predecessors, (214), 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 02:37:12,378 INFO L276 IsEmpty]: Start isEmpty. Operand 15161 states and 19961 transitions. [2021-10-16 02:37:12,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-10-16 02:37:12,404 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:37:12,405 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, 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] [2021-10-16 02:37:12,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-16 02:37:12,406 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:37:12,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:37:12,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1791328964, now seen corresponding path program 1 times [2021-10-16 02:37:12,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:37:12,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894407946] [2021-10-16 02:37:12,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:37:12,408 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:37:12,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:37:12,614 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:37:12,615 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:37:12,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894407946] [2021-10-16 02:37:12,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894407946] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:37:12,616 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:37:12,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:37:12,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281969345] [2021-10-16 02:37:12,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:37:12,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:37:12,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:37:12,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:37:12,619 INFO L87 Difference]: Start difference. First operand 15161 states and 19961 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 2 states have internal predecessors, (217), 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 02:37:13,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:37:13,669 INFO L93 Difference]: Finished difference Result 29606 states and 39123 transitions. [2021-10-16 02:37:13,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:37:13,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 2 states have internal predecessors, (217), 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 217 [2021-10-16 02:37:13,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:37:13,724 INFO L225 Difference]: With dead ends: 29606 [2021-10-16 02:37:13,725 INFO L226 Difference]: Without dead ends: 15304 [2021-10-16 02:37:13,746 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:37:13,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15304 states. [2021-10-16 02:37:14,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15304 to 15304. [2021-10-16 02:37:14,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15304 states, 15303 states have (on average 1.315820427367183) internal successors, (20136), 15303 states have internal predecessors, (20136), 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 02:37:14,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15304 states to 15304 states and 20136 transitions. [2021-10-16 02:37:14,231 INFO L78 Accepts]: Start accepts. Automaton has 15304 states and 20136 transitions. Word has length 217 [2021-10-16 02:37:14,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:37:14,232 INFO L470 AbstractCegarLoop]: Abstraction has 15304 states and 20136 transitions. [2021-10-16 02:37:14,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 2 states have internal predecessors, (217), 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 02:37:14,232 INFO L276 IsEmpty]: Start isEmpty. Operand 15304 states and 20136 transitions. [2021-10-16 02:37:14,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-10-16 02:37:14,262 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:37:14,264 INFO L512 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1] [2021-10-16 02:37:14,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-16 02:37:14,265 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:37:14,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:37:14,266 INFO L82 PathProgramCache]: Analyzing trace with hash 701066453, now seen corresponding path program 1 times [2021-10-16 02:37:14,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:37:14,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673094478] [2021-10-16 02:37:14,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:37:14,268 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:37:14,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:37:14,557 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-16 02:37:14,558 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:37:14,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673094478] [2021-10-16 02:37:14,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673094478] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:37:14,559 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:37:14,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:37:14,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175628252] [2021-10-16 02:37:14,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:37:14,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:37:14,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:37:14,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:37:14,562 INFO L87 Difference]: Start difference. First operand 15304 states and 20136 transitions. Second operand has 4 states, 4 states have (on average 53.5) internal successors, (214), 3 states have internal predecessors, (214), 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 02:37:16,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:37:16,158 INFO L93 Difference]: Finished difference Result 34897 states and 45540 transitions. [2021-10-16 02:37:16,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:37:16,159 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 3 states have internal predecessors, (214), 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 220 [2021-10-16 02:37:16,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:37:16,215 INFO L225 Difference]: With dead ends: 34897 [2021-10-16 02:37:16,216 INFO L226 Difference]: Without dead ends: 20452 [2021-10-16 02:37:16,232 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:37:16,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20452 states. [2021-10-16 02:37:16,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20452 to 19022. [2021-10-16 02:37:16,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19022 states, 19021 states have (on average 1.2806897639451134) internal successors, (24360), 19021 states have internal predecessors, (24360), 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 02:37:16,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19022 states to 19022 states and 24360 transitions. [2021-10-16 02:37:16,778 INFO L78 Accepts]: Start accepts. Automaton has 19022 states and 24360 transitions. Word has length 220 [2021-10-16 02:37:16,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:37:16,778 INFO L470 AbstractCegarLoop]: Abstraction has 19022 states and 24360 transitions. [2021-10-16 02:37:16,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 3 states have internal predecessors, (214), 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 02:37:16,779 INFO L276 IsEmpty]: Start isEmpty. Operand 19022 states and 24360 transitions. [2021-10-16 02:37:16,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2021-10-16 02:37:16,807 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:37:16,807 INFO L512 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:37:16,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-16 02:37:16,808 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:37:16,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:37:16,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1456049833, now seen corresponding path program 1 times [2021-10-16 02:37:16,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:37:16,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852169576] [2021-10-16 02:37:16,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:37:16,810 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:37:16,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:37:16,940 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-10-16 02:37:16,941 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:37:16,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852169576] [2021-10-16 02:37:16,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852169576] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:37:16,941 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:37:16,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:37:16,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579474032] [2021-10-16 02:37:16,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:37:16,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:37:16,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:37:16,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:37:16,945 INFO L87 Difference]: Start difference. First operand 19022 states and 24360 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 states have internal predecessors, (179), 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 02:37:17,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:37:17,889 INFO L93 Difference]: Finished difference Result 39046 states and 49932 transitions. [2021-10-16 02:37:17,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:37:17,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 states have internal predecessors, (179), 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 247 [2021-10-16 02:37:17,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:37:17,940 INFO L225 Difference]: With dead ends: 39046 [2021-10-16 02:37:17,940 INFO L226 Difference]: Without dead ends: 21169 [2021-10-16 02:37:17,955 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:37:17,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21169 states. [2021-10-16 02:37:18,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21169 to 21024. [2021-10-16 02:37:18,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21024 states, 21023 states have (on average 1.2685154354754318) internal successors, (26668), 21023 states have internal predecessors, (26668), 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 02:37:18,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21024 states to 21024 states and 26668 transitions. [2021-10-16 02:37:18,399 INFO L78 Accepts]: Start accepts. Automaton has 21024 states and 26668 transitions. Word has length 247 [2021-10-16 02:37:18,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:37:18,399 INFO L470 AbstractCegarLoop]: Abstraction has 21024 states and 26668 transitions. [2021-10-16 02:37:18,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 states have internal predecessors, (179), 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 02:37:18,400 INFO L276 IsEmpty]: Start isEmpty. Operand 21024 states and 26668 transitions. [2021-10-16 02:37:18,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2021-10-16 02:37:18,439 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:37:18,439 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:37:18,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-16 02:37:18,440 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:37:18,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:37:18,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1311941566, now seen corresponding path program 1 times [2021-10-16 02:37:18,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:37:18,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217911567] [2021-10-16 02:37:18,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:37:18,442 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:37:18,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:37:18,701 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-10-16 02:37:18,701 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:37:18,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217911567] [2021-10-16 02:37:18,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217911567] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:37:18,702 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:37:18,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:37:18,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946208343] [2021-10-16 02:37:18,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:37:18,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:37:18,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:37:18,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:37:18,708 INFO L87 Difference]: Start difference. First operand 21024 states and 26668 transitions. Second operand has 4 states, 4 states have (on average 49.25) internal successors, (197), 3 states have internal predecessors, (197), 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 02:37:19,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:37:19,941 INFO L93 Difference]: Finished difference Result 47052 states and 60318 transitions. [2021-10-16 02:37:19,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:37:19,941 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.25) internal successors, (197), 3 states have internal predecessors, (197), 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 248 [2021-10-16 02:37:19,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:37:20,002 INFO L225 Difference]: With dead ends: 47052 [2021-10-16 02:37:20,002 INFO L226 Difference]: Without dead ends: 27173 [2021-10-16 02:37:20,023 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:37:20,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27173 states. [2021-10-16 02:37:20,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27173 to 26601. [2021-10-16 02:37:20,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26601 states, 26600 states have (on average 1.2132706766917294) internal successors, (32273), 26600 states have internal predecessors, (32273), 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 02:37:20,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26601 states to 26601 states and 32273 transitions. [2021-10-16 02:37:20,831 INFO L78 Accepts]: Start accepts. Automaton has 26601 states and 32273 transitions. Word has length 248 [2021-10-16 02:37:20,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:37:20,831 INFO L470 AbstractCegarLoop]: Abstraction has 26601 states and 32273 transitions. [2021-10-16 02:37:20,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.25) internal successors, (197), 3 states have internal predecessors, (197), 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 02:37:20,832 INFO L276 IsEmpty]: Start isEmpty. Operand 26601 states and 32273 transitions. [2021-10-16 02:37:20,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-10-16 02:37:20,854 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:37:20,855 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 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, 2, 2, 2, 2, 2, 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] [2021-10-16 02:37:20,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-16 02:37:20,856 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:37:20,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:37:20,856 INFO L82 PathProgramCache]: Analyzing trace with hash -2077946769, now seen corresponding path program 1 times [2021-10-16 02:37:20,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:37:20,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882470564] [2021-10-16 02:37:20,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:37:20,858 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:37:20,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:37:21,037 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 109 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-16 02:37:21,038 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:37:21,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882470564] [2021-10-16 02:37:21,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882470564] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:37:21,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022471620] [2021-10-16 02:37:21,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:37:21,039 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:37:21,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:37:21,043 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:37:21,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-16 02:37:21,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:37:21,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:37:21,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:37:22,128 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-16 02:37:22,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:37:22,868 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-16 02:37:22,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022471620] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:37:22,869 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-16 02:37:22,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2021-10-16 02:37:22,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033559655] [2021-10-16 02:37:22,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:37:22,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:37:22,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:37:22,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:37:22,872 INFO L87 Difference]: Start difference. First operand 26601 states and 32273 transitions. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 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 02:37:24,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:37:24,046 INFO L93 Difference]: Finished difference Result 50055 states and 61556 transitions. [2021-10-16 02:37:24,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:37:24,047 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 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 250 [2021-10-16 02:37:24,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:37:24,101 INFO L225 Difference]: With dead ends: 50055 [2021-10-16 02:37:24,102 INFO L226 Difference]: Without dead ends: 27602 [2021-10-16 02:37:24,127 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 497 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.9ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:37:24,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27602 states. [2021-10-16 02:37:24,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27602 to 27602. [2021-10-16 02:37:24,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27602 states, 27601 states have (on average 1.217818194992935) internal successors, (33613), 27601 states have internal predecessors, (33613), 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 02:37:24,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27602 states to 27602 states and 33613 transitions. [2021-10-16 02:37:24,817 INFO L78 Accepts]: Start accepts. Automaton has 27602 states and 33613 transitions. Word has length 250 [2021-10-16 02:37:24,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:37:24,818 INFO L470 AbstractCegarLoop]: Abstraction has 27602 states and 33613 transitions. [2021-10-16 02:37:24,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 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 02:37:24,819 INFO L276 IsEmpty]: Start isEmpty. Operand 27602 states and 33613 transitions. [2021-10-16 02:37:24,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2021-10-16 02:37:24,842 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:37:24,846 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-16 02:37:24,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:37:25,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-16 02:37:25,062 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:37:25,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:37:25,063 INFO L82 PathProgramCache]: Analyzing trace with hash -295748258, now seen corresponding path program 1 times [2021-10-16 02:37:25,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:37:25,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060920809] [2021-10-16 02:37:25,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:37:25,064 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:37:25,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:37:25,265 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:37:25,266 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:37:25,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060920809] [2021-10-16 02:37:25,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060920809] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:37:25,266 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:37:25,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:37:25,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078714372] [2021-10-16 02:37:25,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:37:25,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:37:25,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:37:25,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:37:25,270 INFO L87 Difference]: Start difference. First operand 27602 states and 33613 transitions. Second operand has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 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 02:37:26,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:37:26,654 INFO L93 Difference]: Finished difference Result 54631 states and 66694 transitions. [2021-10-16 02:37:26,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:37:26,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 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 262 [2021-10-16 02:37:26,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:37:26,702 INFO L225 Difference]: With dead ends: 54631 [2021-10-16 02:37:26,703 INFO L226 Difference]: Without dead ends: 27888 [2021-10-16 02:37:26,724 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:37:26,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27888 states. [2021-10-16 02:37:27,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27888 to 26172. [2021-10-16 02:37:27,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26172 states, 26171 states have (on average 1.1857017309235414) internal successors, (31031), 26171 states have internal predecessors, (31031), 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 02:37:27,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26172 states to 26172 states and 31031 transitions. [2021-10-16 02:37:27,433 INFO L78 Accepts]: Start accepts. Automaton has 26172 states and 31031 transitions. Word has length 262 [2021-10-16 02:37:27,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:37:27,434 INFO L470 AbstractCegarLoop]: Abstraction has 26172 states and 31031 transitions. [2021-10-16 02:37:27,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 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 02:37:27,435 INFO L276 IsEmpty]: Start isEmpty. Operand 26172 states and 31031 transitions. [2021-10-16 02:37:27,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2021-10-16 02:37:27,466 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:37:27,466 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:37:27,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-16 02:37:27,467 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:37:27,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:37:27,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1654132681, now seen corresponding path program 1 times [2021-10-16 02:37:27,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:37:27,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011070554] [2021-10-16 02:37:27,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:37:27,469 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:37:27,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:37:27,804 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 133 proven. 6 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2021-10-16 02:37:27,804 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:37:27,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011070554] [2021-10-16 02:37:27,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011070554] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:37:27,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455501007] [2021-10-16 02:37:27,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:37:27,806 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:37:27,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:37:27,808 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:37:27,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-16 02:37:28,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:37:28,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:37:28,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:37:29,227 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 204 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-10-16 02:37:29,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:37:29,904 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 204 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-10-16 02:37:29,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455501007] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:37:29,904 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-16 02:37:29,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2021-10-16 02:37:29,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569178915] [2021-10-16 02:37:29,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:37:29,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:37:29,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:37:29,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:37:29,908 INFO L87 Difference]: Start difference. First operand 26172 states and 31031 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 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 02:37:30,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:37:30,723 INFO L93 Difference]: Finished difference Result 59924 states and 71697 transitions. [2021-10-16 02:37:30,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:37:30,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 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 268 [2021-10-16 02:37:30,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:37:30,780 INFO L225 Difference]: With dead ends: 59924 [2021-10-16 02:37:30,780 INFO L226 Difference]: Without dead ends: 37614 [2021-10-16 02:37:30,800 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 537 GetRequests, 533 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.5ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:37:30,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37614 states. [2021-10-16 02:37:31,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37614 to 37612. [2021-10-16 02:37:31,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37612 states, 37611 states have (on average 1.1794155965010236) internal successors, (44359), 37611 states have internal predecessors, (44359), 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 02:37:31,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37612 states to 37612 states and 44359 transitions. [2021-10-16 02:37:31,756 INFO L78 Accepts]: Start accepts. Automaton has 37612 states and 44359 transitions. Word has length 268 [2021-10-16 02:37:31,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:37:31,757 INFO L470 AbstractCegarLoop]: Abstraction has 37612 states and 44359 transitions. [2021-10-16 02:37:31,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 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 02:37:31,757 INFO L276 IsEmpty]: Start isEmpty. Operand 37612 states and 44359 transitions. [2021-10-16 02:37:31,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2021-10-16 02:37:31,787 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:37:31,788 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-16 02:37:31,840 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-10-16 02:37:32,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-16 02:37:32,004 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:37:32,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:37:32,005 INFO L82 PathProgramCache]: Analyzing trace with hash -633371863, now seen corresponding path program 1 times [2021-10-16 02:37:32,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:37:32,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266556742] [2021-10-16 02:37:32,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:37:32,006 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:37:32,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:37:32,270 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 141 proven. 11 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-10-16 02:37:32,270 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:37:32,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266556742] [2021-10-16 02:37:32,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266556742] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:37:32,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116961982] [2021-10-16 02:37:32,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:37:32,271 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:37:32,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:37:32,272 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:37:32,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-16 02:37:32,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:37:32,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:37:32,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:37:33,689 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 02:37:33,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:37:34,368 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 02:37:34,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116961982] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:37:34,369 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-16 02:37:34,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2021-10-16 02:37:34,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583213773] [2021-10-16 02:37:34,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:37:34,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:37:34,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:37:34,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:37:34,373 INFO L87 Difference]: Start difference. First operand 37612 states and 44359 transitions. Second operand has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 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 02:37:35,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:37:35,553 INFO L93 Difference]: Finished difference Result 76510 states and 90911 transitions. [2021-10-16 02:37:35,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:37:35,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 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 274 [2021-10-16 02:37:35,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:37:35,603 INFO L225 Difference]: With dead ends: 76510 [2021-10-16 02:37:35,604 INFO L226 Difference]: Without dead ends: 40043 [2021-10-16 02:37:35,625 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 545 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.0ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:37:35,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40043 states. [2021-10-16 02:37:36,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40043 to 36039. [2021-10-16 02:37:36,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36039 states, 36038 states have (on average 1.185276652422443) internal successors, (42715), 36038 states have internal predecessors, (42715), 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 02:37:36,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36039 states to 36039 states and 42715 transitions. [2021-10-16 02:37:36,501 INFO L78 Accepts]: Start accepts. Automaton has 36039 states and 42715 transitions. Word has length 274 [2021-10-16 02:37:36,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:37:36,502 INFO L470 AbstractCegarLoop]: Abstraction has 36039 states and 42715 transitions. [2021-10-16 02:37:36,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 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 02:37:36,502 INFO L276 IsEmpty]: Start isEmpty. Operand 36039 states and 42715 transitions. [2021-10-16 02:37:36,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2021-10-16 02:37:36,530 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:37:36,530 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-16 02:37:36,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-16 02:37:36,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:37:36,731 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:37:36,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:37:36,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1713417369, now seen corresponding path program 1 times [2021-10-16 02:37:36,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:37:36,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73861741] [2021-10-16 02:37:36,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:37:36,733 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:37:36,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:37:36,890 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-10-16 02:37:36,890 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:37:36,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73861741] [2021-10-16 02:37:36,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73861741] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:37:36,891 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:37:36,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:37:36,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733642933] [2021-10-16 02:37:36,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:37:36,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:37:36,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:37:36,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:37:36,894 INFO L87 Difference]: Start difference. First operand 36039 states and 42715 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 2 states have internal predecessors, (172), 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 02:37:38,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:37:38,407 INFO L93 Difference]: Finished difference Result 78512 states and 92839 transitions. [2021-10-16 02:37:38,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:37:38,408 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 2 states have internal predecessors, (172), 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 295 [2021-10-16 02:37:38,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:37:38,535 INFO L225 Difference]: With dead ends: 78512 [2021-10-16 02:37:38,535 INFO L226 Difference]: Without dead ends: 43475 [2021-10-16 02:37:38,569 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:37:38,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43475 states. [2021-10-16 02:37:39,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43475 to 43475. [2021-10-16 02:37:39,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43475 states, 43474 states have (on average 1.1735520080967934) internal successors, (51019), 43474 states have internal predecessors, (51019), 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 02:37:39,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43475 states to 43475 states and 51019 transitions. [2021-10-16 02:37:39,472 INFO L78 Accepts]: Start accepts. Automaton has 43475 states and 51019 transitions. Word has length 295 [2021-10-16 02:37:39,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:37:39,472 INFO L470 AbstractCegarLoop]: Abstraction has 43475 states and 51019 transitions. [2021-10-16 02:37:39,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 2 states have internal predecessors, (172), 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 02:37:39,472 INFO L276 IsEmpty]: Start isEmpty. Operand 43475 states and 51019 transitions. [2021-10-16 02:37:39,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2021-10-16 02:37:39,500 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:37:39,501 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-16 02:37:39,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-16 02:37:39,501 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:37:39,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:37:39,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1478361351, now seen corresponding path program 1 times [2021-10-16 02:37:39,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:37:39,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616344324] [2021-10-16 02:37:39,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:37:39,503 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:37:39,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:37:39,705 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 207 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-10-16 02:37:39,706 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:37:39,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616344324] [2021-10-16 02:37:39,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616344324] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:37:39,706 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:37:39,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:37:39,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411746877] [2021-10-16 02:37:39,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:37:39,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:37:39,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:37:39,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:37:39,709 INFO L87 Difference]: Start difference. First operand 43475 states and 51019 transitions. Second operand has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 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 02:37:41,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:37:41,024 INFO L93 Difference]: Finished difference Result 89666 states and 105400 transitions. [2021-10-16 02:37:41,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:37:41,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 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 296 [2021-10-16 02:37:41,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:37:41,087 INFO L225 Difference]: With dead ends: 89666 [2021-10-16 02:37:41,087 INFO L226 Difference]: Without dead ends: 48051 [2021-10-16 02:37:41,110 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:37:41,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48051 states. [2021-10-16 02:37:42,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48051 to 46192. [2021-10-16 02:37:42,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46192 states, 46191 states have (on average 1.167954796388907) internal successors, (53949), 46191 states have internal predecessors, (53949), 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 02:37:42,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46192 states to 46192 states and 53949 transitions. [2021-10-16 02:37:42,146 INFO L78 Accepts]: Start accepts. Automaton has 46192 states and 53949 transitions. Word has length 296 [2021-10-16 02:37:42,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:37:42,146 INFO L470 AbstractCegarLoop]: Abstraction has 46192 states and 53949 transitions. [2021-10-16 02:37:42,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 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 02:37:42,147 INFO L276 IsEmpty]: Start isEmpty. Operand 46192 states and 53949 transitions. [2021-10-16 02:37:42,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2021-10-16 02:37:42,204 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:37:42,205 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-16 02:37:42,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-10-16 02:37:42,205 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:37:42,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:37:42,206 INFO L82 PathProgramCache]: Analyzing trace with hash 616983622, now seen corresponding path program 1 times [2021-10-16 02:37:42,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:37:42,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766861821] [2021-10-16 02:37:42,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:37:42,207 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:37:42,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:37:42,435 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 173 proven. 3 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-10-16 02:37:42,436 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:37:42,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766861821] [2021-10-16 02:37:42,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766861821] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:37:42,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945207554] [2021-10-16 02:37:42,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:37:42,437 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:37:42,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:37:42,439 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:37:42,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-16 02:37:43,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:37:43,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:37:43,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:37:44,725 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-10-16 02:37:44,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:37:45,479 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-10-16 02:37:45,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945207554] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:37:45,480 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-16 02:37:45,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2021-10-16 02:37:45,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434358992] [2021-10-16 02:37:45,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:37:45,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:37:45,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:37:45,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:37:45,482 INFO L87 Difference]: Start difference. First operand 46192 states and 53949 transitions. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 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 02:37:46,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:37:46,549 INFO L93 Difference]: Finished difference Result 100677 states and 118199 transitions. [2021-10-16 02:37:46,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:37:46,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 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 311 [2021-10-16 02:37:46,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:37:46,633 INFO L225 Difference]: With dead ends: 100677 [2021-10-16 02:37:46,633 INFO L226 Difference]: Without dead ends: 56202 [2021-10-16 02:37:46,659 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 623 GetRequests, 619 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.5ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:37:46,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56202 states. [2021-10-16 02:37:47,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56202 to 52770. [2021-10-16 02:37:47,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52770 states, 52769 states have (on average 1.1564933957437131) internal successors, (61027), 52769 states have internal predecessors, (61027), 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 02:37:48,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52770 states to 52770 states and 61027 transitions. [2021-10-16 02:37:48,022 INFO L78 Accepts]: Start accepts. Automaton has 52770 states and 61027 transitions. Word has length 311 [2021-10-16 02:37:48,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:37:48,023 INFO L470 AbstractCegarLoop]: Abstraction has 52770 states and 61027 transitions. [2021-10-16 02:37:48,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 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 02:37:48,023 INFO L276 IsEmpty]: Start isEmpty. Operand 52770 states and 61027 transitions. [2021-10-16 02:37:48,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2021-10-16 02:37:48,055 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:37:48,056 INFO L512 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 02:37:48,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-16 02:37:48,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-10-16 02:37:48,260 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:37:48,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:37:48,260 INFO L82 PathProgramCache]: Analyzing trace with hash 849519151, now seen corresponding path program 1 times [2021-10-16 02:37:48,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:37:48,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939668587] [2021-10-16 02:37:48,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:37:48,261 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:37:48,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:37:48,557 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 74 proven. 6 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2021-10-16 02:37:48,558 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:37:48,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939668587] [2021-10-16 02:37:48,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939668587] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:37:48,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080621827] [2021-10-16 02:37:48,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:37:48,560 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:37:48,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:37:48,564 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:37:48,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-16 02:37:49,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:37:49,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-16 02:37:49,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:37:52,768 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2021-10-16 02:37:52,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:37:56,073 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2021-10-16 02:37:56,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080621827] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:37:56,074 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-16 02:37:56,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [4] total 9 [2021-10-16 02:37:56,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129771022] [2021-10-16 02:37:56,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 02:37:56,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:37:56,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 02:37:56,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:37:56,078 INFO L87 Difference]: Start difference. First operand 52770 states and 61027 transitions. Second operand has 7 states, 7 states have (on average 31.142857142857142) internal successors, (218), 6 states have internal predecessors, (218), 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 02:37:58,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:37:58,193 INFO L93 Difference]: Finished difference Result 107501 states and 124181 transitions. [2021-10-16 02:37:58,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 02:37:58,195 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 31.142857142857142) internal successors, (218), 6 states have internal predecessors, (218), 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 315 [2021-10-16 02:37:58,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:37:58,267 INFO L225 Difference]: With dead ends: 107501 [2021-10-16 02:37:58,267 INFO L226 Difference]: Without dead ends: 55018 [2021-10-16 02:37:58,290 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 634 GetRequests, 624 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 232.5ms TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-16 02:37:58,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55018 states. [2021-10-16 02:37:59,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55018 to 53771. [2021-10-16 02:37:59,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53771 states, 53770 states have (on average 1.1541937883578204) internal successors, (62061), 53770 states have internal predecessors, (62061), 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 02:37:59,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53771 states to 53771 states and 62061 transitions. [2021-10-16 02:37:59,398 INFO L78 Accepts]: Start accepts. Automaton has 53771 states and 62061 transitions. Word has length 315 [2021-10-16 02:37:59,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:37:59,398 INFO L470 AbstractCegarLoop]: Abstraction has 53771 states and 62061 transitions. [2021-10-16 02:37:59,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 31.142857142857142) internal successors, (218), 6 states have internal predecessors, (218), 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 02:37:59,399 INFO L276 IsEmpty]: Start isEmpty. Operand 53771 states and 62061 transitions. [2021-10-16 02:37:59,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2021-10-16 02:37:59,433 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:37:59,433 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-16 02:37:59,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-16 02:37:59,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:37:59,635 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:37:59,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:37:59,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1952507284, now seen corresponding path program 1 times [2021-10-16 02:37:59,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:37:59,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683878453] [2021-10-16 02:37:59,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:37:59,636 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:37:59,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:37:59,845 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 196 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-10-16 02:37:59,846 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:37:59,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683878453] [2021-10-16 02:37:59,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683878453] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:37:59,846 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:37:59,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:37:59,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771702234] [2021-10-16 02:37:59,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:37:59,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:37:59,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:37:59,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:37:59,849 INFO L87 Difference]: Start difference. First operand 53771 states and 62061 transitions. Second operand has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 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 02:38:01,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:38:01,447 INFO L93 Difference]: Finished difference Result 113118 states and 130739 transitions. [2021-10-16 02:38:01,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:38:01,448 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 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 320 [2021-10-16 02:38:01,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:38:01,545 INFO L225 Difference]: With dead ends: 113118 [2021-10-16 02:38:01,545 INFO L226 Difference]: Without dead ends: 60349 [2021-10-16 02:38:01,569 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:38:01,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60349 states. [2021-10-16 02:38:02,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60349 to 59634. [2021-10-16 02:38:02,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59634 states, 59633 states have (on average 1.1475022219241025) internal successors, (68429), 59633 states have internal predecessors, (68429), 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 02:38:02,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59634 states to 59634 states and 68429 transitions. [2021-10-16 02:38:02,830 INFO L78 Accepts]: Start accepts. Automaton has 59634 states and 68429 transitions. Word has length 320 [2021-10-16 02:38:02,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:38:02,830 INFO L470 AbstractCegarLoop]: Abstraction has 59634 states and 68429 transitions. [2021-10-16 02:38:02,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 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 02:38:02,830 INFO L276 IsEmpty]: Start isEmpty. Operand 59634 states and 68429 transitions. [2021-10-16 02:38:02,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2021-10-16 02:38:02,867 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:38:02,868 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-16 02:38:02,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-10-16 02:38:02,869 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:38:02,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:38:02,869 INFO L82 PathProgramCache]: Analyzing trace with hash -468259048, now seen corresponding path program 1 times [2021-10-16 02:38:02,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:38:02,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366963475] [2021-10-16 02:38:02,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:38:02,871 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:38:02,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:38:03,107 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 225 proven. 34 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-10-16 02:38:03,107 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:38:03,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366963475] [2021-10-16 02:38:03,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366963475] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:38:03,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011680328] [2021-10-16 02:38:03,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:38:03,109 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:38:03,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:38:03,112 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:38:03,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-16 02:38:04,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:38:04,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 625 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:38:04,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:38:05,641 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 213 proven. 40 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-10-16 02:38:05,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:38:07,047 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 213 proven. 40 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-10-16 02:38:07,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011680328] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:38:07,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [638896225] [2021-10-16 02:38:07,087 INFO L159 IcfgInterpreter]: Started Sifa with 145 locations of interest [2021-10-16 02:38:07,087 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 02:38:07,095 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 02:38:07,102 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 02:38:07,103 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 02:38:07,647 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:38:07,658 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:38:07,659 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:38:07,663 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 02:38:07,666 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:38:07,667 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:38:07,668 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-16 02:38:07,677 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 248 [2021-10-16 02:38:07,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:38:07,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:38:07,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:38:07,755 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 02:38:07,756 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:38:07,757 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 02:38:07,758 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:38:07,759 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 02:38:07,759 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-16 02:38:07,762 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:38:07,822 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:38:07,829 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:38:07,844 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 248 [2021-10-16 02:38:07,845 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-16 02:38:07,845 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:245, output treesize:248 [2021-10-16 02:38:07,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-16 02:38:08,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:38:08,060 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 02:38:08,065 INFO L168 Benchmark]: Toolchain (without parser) took 79181.90 ms. Allocated memory was 86.0 MB in the beginning and 10.4 GB in the end (delta: 10.3 GB). Free memory was 63.2 MB in the beginning and 8.8 GB in the end (delta: -8.7 GB). Peak memory consumption was 1.6 GB. Max. memory is 16.1 GB. [2021-10-16 02:38:08,066 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 86.0 MB. Free memory was 55.9 MB in the beginning and 55.9 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:38:08,067 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1490.81 ms. Allocated memory was 86.0 MB in the beginning and 109.1 MB in the end (delta: 23.1 MB). Free memory was 62.9 MB in the beginning and 65.8 MB in the end (delta: -2.9 MB). Peak memory consumption was 46.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:38:08,067 INFO L168 Benchmark]: Boogie Procedure Inliner took 205.04 ms. Allocated memory is still 109.1 MB. Free memory was 65.8 MB in the beginning and 51.1 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:38:08,068 INFO L168 Benchmark]: Boogie Preprocessor took 285.35 ms. Allocated memory is still 109.1 MB. Free memory was 51.1 MB in the beginning and 66.5 MB in the end (delta: -15.4 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:38:08,068 INFO L168 Benchmark]: RCFGBuilder took 3814.91 ms. Allocated memory was 109.1 MB in the beginning and 216.0 MB in the end (delta: 107.0 MB). Free memory was 66.5 MB in the beginning and 146.7 MB in the end (delta: -80.2 MB). Peak memory consumption was 70.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:38:08,069 INFO L168 Benchmark]: TraceAbstraction took 73372.21 ms. Allocated memory was 216.0 MB in the beginning and 10.4 GB in the end (delta: 10.2 GB). Free memory was 146.7 MB in the beginning and 8.8 GB in the end (delta: -8.6 GB). Peak memory consumption was 1.5 GB. Max. memory is 16.1 GB. [2021-10-16 02:38:08,072 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 86.0 MB. Free memory was 55.9 MB in the beginning and 55.9 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1490.81 ms. Allocated memory was 86.0 MB in the beginning and 109.1 MB in the end (delta: 23.1 MB). Free memory was 62.9 MB in the beginning and 65.8 MB in the end (delta: -2.9 MB). Peak memory consumption was 46.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 205.04 ms. Allocated memory is still 109.1 MB. Free memory was 65.8 MB in the beginning and 51.1 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 285.35 ms. Allocated memory is still 109.1 MB. Free memory was 51.1 MB in the beginning and 66.5 MB in the end (delta: -15.4 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 3814.91 ms. Allocated memory was 109.1 MB in the beginning and 216.0 MB in the end (delta: 107.0 MB). Free memory was 66.5 MB in the beginning and 146.7 MB in the end (delta: -80.2 MB). Peak memory consumption was 70.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 73372.21 ms. Allocated memory was 216.0 MB in the beginning and 10.4 GB in the end (delta: 10.2 GB). Free memory was 146.7 MB in the beginning and 8.8 GB in the end (delta: -8.6 GB). Peak memory consumption was 1.5 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 02:38:08,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/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 02:38:11,366 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:38:11,371 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:38:11,415 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:38:11,416 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:38:11,418 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:38:11,420 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:38:11,429 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:38:11,436 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:38:11,441 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:38:11,443 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:38:11,448 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:38:11,448 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:38:11,459 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:38:11,461 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:38:11,464 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:38:11,466 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:38:11,468 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:38:11,475 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:38:11,483 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:38:11,486 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:38:11,488 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:38:11,490 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:38:11,491 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:38:11,501 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:38:11,503 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:38:11,504 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:38:11,507 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:38:11,507 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:38:11,509 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:38:11,511 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:38:11,512 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:38:11,515 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:38:11,516 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:38:11,518 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:38:11,519 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:38:11,520 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:38:11,521 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:38:11,530 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:38:11,533 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:38:11,534 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:38:11,541 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 02:38:11,616 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:38:11,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:38:11,620 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:38:11,620 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:38:11,620 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:38:11,621 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:38:11,621 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:38:11,621 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:38:11,622 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:38:11,624 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:38:11,625 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:38:11,626 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:38:11,626 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:38:11,627 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:38:11,627 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:38:11,627 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:38:11,628 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:38:11,628 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:38:11,628 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:38:11,629 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:38:11,629 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:38:11,629 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:38:11,630 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:38:11,630 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:38:11,630 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:38:11,631 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:38:11,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:38:11,631 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:38:11,632 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:38:11,632 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:38:11,632 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:38:11,633 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:38:11,633 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:38:11,634 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:38:11,634 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:38:11,634 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_5834f4af-4359-4496-a8cf-495b3f64d4ae/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b936499c618953079e53bf3f0c3afd5dfbaafbc2 [2021-10-16 02:38:12,168 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:38:12,195 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:38:12,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:38:12,201 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:38:12,202 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:38:12,203 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/eca-rers2012/Problem03_label33.c [2021-10-16 02:38:12,311 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/data/bcb8db35c/cd9628f71cdf4134868d45338f65eee8/FLAGaf1c720dd [2021-10-16 02:38:13,422 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:38:13,424 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/sv-benchmarks/c/eca-rers2012/Problem03_label33.c [2021-10-16 02:38:13,457 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/data/bcb8db35c/cd9628f71cdf4134868d45338f65eee8/FLAGaf1c720dd [2021-10-16 02:38:13,955 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/data/bcb8db35c/cd9628f71cdf4134868d45338f65eee8 [2021-10-16 02:38:13,958 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:38:13,960 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:38:13,962 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:38:13,963 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:38:13,968 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:38:13,969 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:38:13" (1/1) ... [2021-10-16 02:38:13,970 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d2a07a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:38:13, skipping insertion in model container [2021-10-16 02:38:13,971 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:38:13" (1/1) ... [2021-10-16 02:38:13,981 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:38:14,077 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:38:14,895 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_5834f4af-4359-4496-a8cf-495b3f64d4ae/sv-benchmarks/c/eca-rers2012/Problem03_label33.c[55678,55691] [2021-10-16 02:38:14,953 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:38:14,974 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:38:15,511 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_5834f4af-4359-4496-a8cf-495b3f64d4ae/sv-benchmarks/c/eca-rers2012/Problem03_label33.c[55678,55691] [2021-10-16 02:38:15,546 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:38:15,575 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:38:15,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:38:15 WrapperNode [2021-10-16 02:38:15,576 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:38:15,578 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:38:15,579 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:38:15,579 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:38:15,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:38:15" (1/1) ... [2021-10-16 02:38:15,653 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:38:15" (1/1) ... [2021-10-16 02:38:15,851 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:38:15,852 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:38:15,853 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:38:15,853 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:38:15,866 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:38:15" (1/1) ... [2021-10-16 02:38:15,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:38:15" (1/1) ... [2021-10-16 02:38:15,884 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:38:15" (1/1) ... [2021-10-16 02:38:15,884 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:38:15" (1/1) ... [2021-10-16 02:38:16,004 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:38:15" (1/1) ... [2021-10-16 02:38:16,038 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:38:15" (1/1) ... [2021-10-16 02:38:16,070 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:38:15" (1/1) ... [2021-10-16 02:38:16,092 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:38:16,095 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:38:16,096 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:38:16,096 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:38:16,097 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:38:15" (1/1) ... [2021-10-16 02:38:16,107 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:38:16,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:38:16,140 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:38:16,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:38:16,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:38:16,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:38:16,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:38:16,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:38:19,574 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:38:19,575 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-16 02:38:19,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:38:19 BoogieIcfgContainer [2021-10-16 02:38:19,580 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:38:19,582 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:38:19,583 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:38:19,587 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:38:19,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:38:13" (1/3) ... [2021-10-16 02:38:19,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3621cde7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:38:19, skipping insertion in model container [2021-10-16 02:38:19,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:38:15" (2/3) ... [2021-10-16 02:38:19,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3621cde7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:38:19, skipping insertion in model container [2021-10-16 02:38:19,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:38:19" (3/3) ... [2021-10-16 02:38:19,592 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label33.c [2021-10-16 02:38:19,600 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:38:19,600 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:38:19,706 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:38:19,714 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 02:38:19,715 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:38:19,745 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 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 02:38:19,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-10-16 02:38:19,769 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:38:19,770 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:38:19,771 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:38:19,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:38:19,779 INFO L82 PathProgramCache]: Analyzing trace with hash 263676051, now seen corresponding path program 1 times [2021-10-16 02:38:19,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:38:19,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1519696999] [2021-10-16 02:38:19,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:38:19,818 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:38:19,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:38:19,823 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:38:19,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:38:20,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:38:20,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-16 02:38:20,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:38:44,116 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 02:38:44,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:39:24,809 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 02:39:24,810 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:39:24,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1519696999] [2021-10-16 02:39:24,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1519696999] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:39:24,812 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:39:24,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 15 [2021-10-16 02:39:24,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738997376] [2021-10-16 02:39:24,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-16 02:39:24,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:39:24,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-16 02:39:24,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2021-10-16 02:39:24,839 INFO L87 Difference]: Start difference. First operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 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 16 states, 16 states have (on average 17.125) internal successors, (274), 15 states have internal predecessors, (274), 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 02:39:31,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:39:31,237 INFO L93 Difference]: Finished difference Result 718 states and 1265 transitions. [2021-10-16 02:39:31,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 02:39:31,250 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 17.125) internal successors, (274), 15 states have internal predecessors, (274), 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 159 [2021-10-16 02:39:31,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:39:31,267 INFO L225 Difference]: With dead ends: 718 [2021-10-16 02:39:31,267 INFO L226 Difference]: Without dead ends: 352 [2021-10-16 02:39:31,274 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 3353.4ms TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2021-10-16 02:39:31,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2021-10-16 02:39:31,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 352. [2021-10-16 02:39:31,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 351 states have (on average 1.4586894586894588) internal successors, (512), 351 states have internal predecessors, (512), 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 02:39:31,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 512 transitions. [2021-10-16 02:39:31,350 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 512 transitions. Word has length 159 [2021-10-16 02:39:31,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:39:31,351 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 512 transitions. [2021-10-16 02:39:31,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 17.125) internal successors, (274), 15 states have internal predecessors, (274), 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 02:39:31,352 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 512 transitions. [2021-10-16 02:39:31,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-10-16 02:39:31,359 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:39:31,360 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:39:31,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:39:31,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:39:31,568 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:39:31,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:39:31,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1939731592, now seen corresponding path program 1 times [2021-10-16 02:39:31,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:39:31,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [167158086] [2021-10-16 02:39:31,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:39:31,574 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:39:31,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:39:31,576 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:39:31,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 02:39:34,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:39:34,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-16 02:39:34,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:39:56,235 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:39:56,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:40:49,379 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:40:49,380 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:40:49,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [167158086] [2021-10-16 02:40:49,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [167158086] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-16 02:40:49,381 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-16 02:40:49,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 17 [2021-10-16 02:40:49,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763878556] [2021-10-16 02:40:49,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-16 02:40:49,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:40:49,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-16 02:40:49,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2021-10-16 02:40:49,386 INFO L87 Difference]: Start difference. First operand 352 states and 512 transitions. Second operand has 10 states, 10 states have (on average 16.6) internal successors, (166), 9 states have internal predecessors, (166), 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 02:40:55,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:40:55,345 INFO L93 Difference]: Finished difference Result 730 states and 1182 transitions. [2021-10-16 02:40:55,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 02:40:55,346 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.6) internal successors, (166), 9 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2021-10-16 02:40:55,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:40:55,355 INFO L225 Difference]: With dead ends: 730 [2021-10-16 02:40:55,355 INFO L226 Difference]: Without dead ends: 493 [2021-10-16 02:40:55,358 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 2935.8ms TimeCoverageRelationStatistics Valid=140, Invalid=280, Unknown=0, NotChecked=0, Total=420 [2021-10-16 02:40:55,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2021-10-16 02:40:55,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 493. [2021-10-16 02:40:55,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 492 states have (on average 1.339430894308943) internal successors, (659), 492 states have internal predecessors, (659), 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 02:40:55,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 659 transitions. [2021-10-16 02:40:55,396 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 659 transitions. Word has length 166 [2021-10-16 02:40:55,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:40:55,397 INFO L470 AbstractCegarLoop]: Abstraction has 493 states and 659 transitions. [2021-10-16 02:40:55,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.6) internal successors, (166), 9 states have internal predecessors, (166), 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 02:40:55,398 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 659 transitions. [2021-10-16 02:40:55,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-10-16 02:40:55,417 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:40:55,418 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:40:55,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:40:55,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:40:55,643 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:40:55,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:40:55,644 INFO L82 PathProgramCache]: Analyzing trace with hash 946562569, now seen corresponding path program 1 times [2021-10-16 02:40:55,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:40:55,649 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [218971908] [2021-10-16 02:40:55,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:40:55,650 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:40:55,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:40:55,652 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:40:55,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 02:41:00,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:41:00,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:41:00,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:41:01,005 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-16 02:41:01,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:41:01,511 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-16 02:41:01,511 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:41:01,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [218971908] [2021-10-16 02:41:01,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [218971908] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:41:01,512 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:41:01,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:41:01,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991656769] [2021-10-16 02:41:01,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:41:01,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:41:01,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:41:01,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:41:01,514 INFO L87 Difference]: Start difference. First operand 493 states and 659 transitions. Second operand has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 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 02:41:04,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:41:04,039 INFO L93 Difference]: Finished difference Result 1145 states and 1745 transitions. [2021-10-16 02:41:04,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:41:04,040 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 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 174 [2021-10-16 02:41:04,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:41:04,047 INFO L225 Difference]: With dead ends: 1145 [2021-10-16 02:41:04,048 INFO L226 Difference]: Without dead ends: 908 [2021-10-16 02:41:04,049 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:41:04,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2021-10-16 02:41:04,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 906. [2021-10-16 02:41:04,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 906 states, 905 states have (on average 1.3635359116022099) internal successors, (1234), 905 states have internal predecessors, (1234), 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 02:41:04,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1234 transitions. [2021-10-16 02:41:04,094 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1234 transitions. Word has length 174 [2021-10-16 02:41:04,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:41:04,095 INFO L470 AbstractCegarLoop]: Abstraction has 906 states and 1234 transitions. [2021-10-16 02:41:04,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 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 02:41:04,096 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1234 transitions. [2021-10-16 02:41:04,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-10-16 02:41:04,101 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:41:04,101 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:41:04,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:41:04,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:41:04,328 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:41:04,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:41:04,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1810775666, now seen corresponding path program 1 times [2021-10-16 02:41:04,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:41:04,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1409440344] [2021-10-16 02:41:04,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:41:04,331 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:41:04,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:41:04,335 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:41:04,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 02:41:09,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:41:09,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:41:09,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:41:10,434 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-10-16 02:41:10,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:41:11,014 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-10-16 02:41:11,014 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:41:11,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1409440344] [2021-10-16 02:41:11,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1409440344] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:41:11,015 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:41:11,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 02:41:11,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243357449] [2021-10-16 02:41:11,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:41:11,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:41:11,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:41:11,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:41:11,018 INFO L87 Difference]: Start difference. First operand 906 states and 1234 transitions. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 2 states have internal predecessors, (183), 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 02:41:12,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:41:12,034 INFO L93 Difference]: Finished difference Result 1536 states and 2172 transitions. [2021-10-16 02:41:12,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:41:12,035 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 2 states have internal predecessors, (183), 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 213 [2021-10-16 02:41:12,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:41:12,042 INFO L225 Difference]: With dead ends: 1536 [2021-10-16 02:41:12,042 INFO L226 Difference]: Without dead ends: 886 [2021-10-16 02:41:12,044 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 423 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:41:12,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2021-10-16 02:41:12,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 886. [2021-10-16 02:41:12,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 886 states, 885 states have (on average 1.311864406779661) internal successors, (1161), 885 states have internal predecessors, (1161), 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 02:41:12,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 1161 transitions. [2021-10-16 02:41:12,078 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 1161 transitions. Word has length 213 [2021-10-16 02:41:12,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:41:12,078 INFO L470 AbstractCegarLoop]: Abstraction has 886 states and 1161 transitions. [2021-10-16 02:41:12,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 2 states have internal predecessors, (183), 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 02:41:12,079 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 1161 transitions. [2021-10-16 02:41:12,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-10-16 02:41:12,084 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:41:12,084 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:41:12,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-16 02:41:12,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:41:12,300 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:41:12,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:41:12,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1688470894, now seen corresponding path program 1 times [2021-10-16 02:41:12,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:41:12,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1673164973] [2021-10-16 02:41:12,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:41:12,305 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:41:12,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:41:12,307 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:41:12,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-16 02:41:18,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:41:18,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:41:18,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:41:19,018 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-16 02:41:19,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:41:20,118 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 55 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-16 02:41:20,118 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:41:20,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1673164973] [2021-10-16 02:41:20,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1673164973] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-16 02:41:20,119 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-16 02:41:20,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2021-10-16 02:41:20,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571063579] [2021-10-16 02:41:20,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:41:20,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:41:20,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:41:20,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:41:20,123 INFO L87 Difference]: Start difference. First operand 886 states and 1161 transitions. Second operand has 4 states, 4 states have (on average 52.5) internal successors, (210), 3 states have internal predecessors, (210), 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 02:41:22,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:41:22,272 INFO L93 Difference]: Finished difference Result 2133 states and 2931 transitions. [2021-10-16 02:41:22,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:41:22,273 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.5) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2021-10-16 02:41:22,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:41:22,288 INFO L225 Difference]: With dead ends: 2133 [2021-10-16 02:41:22,289 INFO L226 Difference]: Without dead ends: 1503 [2021-10-16 02:41:22,291 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 24.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:41:22,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1503 states. [2021-10-16 02:41:22,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1503 to 1499. [2021-10-16 02:41:22,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1499 states, 1498 states have (on average 1.3190921228304406) internal successors, (1976), 1498 states have internal predecessors, (1976), 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 02:41:22,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1499 states to 1499 states and 1976 transitions. [2021-10-16 02:41:22,340 INFO L78 Accepts]: Start accepts. Automaton has 1499 states and 1976 transitions. Word has length 215 [2021-10-16 02:41:22,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:41:22,341 INFO L470 AbstractCegarLoop]: Abstraction has 1499 states and 1976 transitions. [2021-10-16 02:41:22,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.5) internal successors, (210), 3 states have internal predecessors, (210), 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 02:41:22,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1499 states and 1976 transitions. [2021-10-16 02:41:22,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2021-10-16 02:41:22,348 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:41:22,349 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:41:22,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-16 02:41:22,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:41:22,564 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:41:22,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:41:22,564 INFO L82 PathProgramCache]: Analyzing trace with hash -535923035, now seen corresponding path program 1 times [2021-10-16 02:41:22,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:41:22,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1509013704] [2021-10-16 02:41:22,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:41:22,567 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:41:22,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:41:22,569 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:41:22,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-16 02:41:27,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:41:27,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:41:27,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:41:28,265 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-10-16 02:41:28,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:41:28,847 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-10-16 02:41:28,847 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:41:28,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1509013704] [2021-10-16 02:41:28,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1509013704] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:41:28,848 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:41:28,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:41:28,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598221120] [2021-10-16 02:41:28,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:41:28,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:41:28,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:41:28,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:41:28,851 INFO L87 Difference]: Start difference. First operand 1499 states and 1976 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 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 02:41:30,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:41:30,168 INFO L93 Difference]: Finished difference Result 3966 states and 5370 transitions. [2021-10-16 02:41:30,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:41:30,168 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 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 249 [2021-10-16 02:41:30,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:41:30,198 INFO L225 Difference]: With dead ends: 3966 [2021-10-16 02:41:30,198 INFO L226 Difference]: Without dead ends: 2723 [2021-10-16 02:41:30,201 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 495 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:41:30,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2723 states. [2021-10-16 02:41:30,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2723 to 2720. [2021-10-16 02:41:30,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2720 states, 2719 states have (on average 1.3026848105921294) internal successors, (3542), 2719 states have internal predecessors, (3542), 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 02:41:30,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2720 states to 2720 states and 3542 transitions. [2021-10-16 02:41:30,285 INFO L78 Accepts]: Start accepts. Automaton has 2720 states and 3542 transitions. Word has length 249 [2021-10-16 02:41:30,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:41:30,287 INFO L470 AbstractCegarLoop]: Abstraction has 2720 states and 3542 transitions. [2021-10-16 02:41:30,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 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 02:41:30,287 INFO L276 IsEmpty]: Start isEmpty. Operand 2720 states and 3542 transitions. [2021-10-16 02:41:30,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2021-10-16 02:41:30,298 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:41:30,298 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-16 02:41:30,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-16 02:41:30,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:41:30,520 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:41:30,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:41:30,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1535197581, now seen corresponding path program 1 times [2021-10-16 02:41:30,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:41:30,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2088404683] [2021-10-16 02:41:30,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:41:30,525 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:41:30,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:41:30,526 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:41:30,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-16 02:41:36,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:41:36,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-16 02:41:36,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:42:06,224 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 21 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:42:06,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:43:14,682 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 2 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:43:14,682 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:43:14,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2088404683] [2021-10-16 02:43:14,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2088404683] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:43:14,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1995466948] [2021-10-16 02:43:14,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:43:14,683 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:43:14,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:43:14,685 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:43:14,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-10-16 02:43:26,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:43:26,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:43:26,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:43:27,611 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:43:27,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:43:28,251 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:43:28,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1995466948] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:43:28,251 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-16 02:43:28,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [9, 9] total 19 [2021-10-16 02:43:28,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001053927] [2021-10-16 02:43:28,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:43:28,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:43:28,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:43:28,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-10-16 02:43:28,254 INFO L87 Difference]: Start difference. First operand 2720 states and 3542 transitions. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 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 02:43:29,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:43:29,769 INFO L93 Difference]: Finished difference Result 7623 states and 10059 transitions. [2021-10-16 02:43:29,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:43:29,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 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 261 [2021-10-16 02:43:29,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:43:29,803 INFO L225 Difference]: With dead ends: 7623 [2021-10-16 02:43:29,804 INFO L226 Difference]: Without dead ends: 5159 [2021-10-16 02:43:29,809 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1040 GetRequests, 1023 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2563.8ms TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-10-16 02:43:29,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5159 states. [2021-10-16 02:43:29,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5159 to 5157. [2021-10-16 02:43:29,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5157 states, 5156 states have (on average 1.2608611326609775) internal successors, (6501), 5156 states have internal predecessors, (6501), 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 02:43:29,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5157 states to 5157 states and 6501 transitions. [2021-10-16 02:43:29,969 INFO L78 Accepts]: Start accepts. Automaton has 5157 states and 6501 transitions. Word has length 261 [2021-10-16 02:43:29,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:43:29,970 INFO L470 AbstractCegarLoop]: Abstraction has 5157 states and 6501 transitions. [2021-10-16 02:43:29,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 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 02:43:29,971 INFO L276 IsEmpty]: Start isEmpty. Operand 5157 states and 6501 transitions. [2021-10-16 02:43:29,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2021-10-16 02:43:29,987 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:43:29,987 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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:43:30,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-10-16 02:43:30,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-10-16 02:43:30,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:43:30,408 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:43:30,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:43:30,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1835403839, now seen corresponding path program 1 times [2021-10-16 02:43:30,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:43:30,412 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1163505352] [2021-10-16 02:43:30,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:43:30,412 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:43:30,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:43:30,414 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:43:30,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-16 02:43:39,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:43:39,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:43:39,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:43:39,771 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-10-16 02:43:39,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:43:40,520 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-10-16 02:43:40,520 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:43:40,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1163505352] [2021-10-16 02:43:40,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1163505352] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:43:40,520 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:43:40,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-16 02:43:40,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059679161] [2021-10-16 02:43:40,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:43:40,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:43:40,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:43:40,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:43:40,523 INFO L87 Difference]: Start difference. First operand 5157 states and 6501 transitions. Second operand has 4 states, 4 states have (on average 54.5) internal successors, (218), 3 states have internal predecessors, (218), 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 02:43:42,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:43:42,732 INFO L93 Difference]: Finished difference Result 13314 states and 16751 transitions. [2021-10-16 02:43:42,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:43:42,733 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.5) internal successors, (218), 3 states have internal predecessors, (218), 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 262 [2021-10-16 02:43:42,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:43:42,771 INFO L225 Difference]: With dead ends: 13314 [2021-10-16 02:43:42,771 INFO L226 Difference]: Without dead ends: 8413 [2021-10-16 02:43:42,778 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 520 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:43:42,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8413 states. [2021-10-16 02:43:42,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8413 to 8409. [2021-10-16 02:43:42,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8409 states, 8408 states have (on average 1.1930304471931494) internal successors, (10031), 8408 states have internal predecessors, (10031), 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 02:43:42,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8409 states to 8409 states and 10031 transitions. [2021-10-16 02:43:42,993 INFO L78 Accepts]: Start accepts. Automaton has 8409 states and 10031 transitions. Word has length 262 [2021-10-16 02:43:42,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:43:42,993 INFO L470 AbstractCegarLoop]: Abstraction has 8409 states and 10031 transitions. [2021-10-16 02:43:42,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.5) internal successors, (218), 3 states have internal predecessors, (218), 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 02:43:42,994 INFO L276 IsEmpty]: Start isEmpty. Operand 8409 states and 10031 transitions. [2021-10-16 02:43:43,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-10-16 02:43:43,012 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:43:43,013 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:43:43,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-16 02:43:43,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:43:43,228 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:43:43,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:43:43,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1460616756, now seen corresponding path program 1 times [2021-10-16 02:43:43,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:43:43,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1306795095] [2021-10-16 02:43:43,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:43:43,232 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:43:43,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:43:43,235 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:43:43,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-16 02:43:52,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:43:52,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:43:52,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:43:53,137 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-10-16 02:43:53,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:43:54,389 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-10-16 02:43:54,389 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:43:54,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1306795095] [2021-10-16 02:43:54,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1306795095] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:43:54,390 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:43:54,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:43:54,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549423140] [2021-10-16 02:43:54,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:43:54,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:43:54,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:43:54,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:43:54,392 INFO L87 Difference]: Start difference. First operand 8409 states and 10031 transitions. Second operand has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 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 02:43:56,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:43:56,739 INFO L93 Difference]: Finished difference Result 21438 states and 25826 transitions. [2021-10-16 02:43:56,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:43:56,739 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 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 269 [2021-10-16 02:43:56,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:43:56,829 INFO L225 Difference]: With dead ends: 21438 [2021-10-16 02:43:56,829 INFO L226 Difference]: Without dead ends: 13285 [2021-10-16 02:43:56,839 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 534 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:43:56,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13285 states. [2021-10-16 02:43:57,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13285 to 12469. [2021-10-16 02:43:57,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12469 states, 12468 states have (on average 1.1832691690728265) internal successors, (14753), 12468 states have internal predecessors, (14753), 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 02:43:57,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12469 states to 12469 states and 14753 transitions. [2021-10-16 02:43:57,120 INFO L78 Accepts]: Start accepts. Automaton has 12469 states and 14753 transitions. Word has length 269 [2021-10-16 02:43:57,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:43:57,120 INFO L470 AbstractCegarLoop]: Abstraction has 12469 states and 14753 transitions. [2021-10-16 02:43:57,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 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 02:43:57,121 INFO L276 IsEmpty]: Start isEmpty. Operand 12469 states and 14753 transitions. [2021-10-16 02:43:57,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2021-10-16 02:43:57,142 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:43:57,142 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-16 02:43:57,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-16 02:43:57,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:43:57,364 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:43:57,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:43:57,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1635377643, now seen corresponding path program 1 times [2021-10-16 02:43:57,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:43:57,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1994079768] [2021-10-16 02:43:57,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:43:57,367 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:43:57,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:43:57,368 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:43:57,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-16 02:44:06,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:44:06,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:44:06,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:44:07,684 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-16 02:44:07,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:44:09,543 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-16 02:44:09,543 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:44:09,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1994079768] [2021-10-16 02:44:09,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1994079768] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:44:09,544 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:44:09,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-16 02:44:09,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203599824] [2021-10-16 02:44:09,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:44:09,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:44:09,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:44:09,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:44:09,547 INFO L87 Difference]: Start difference. First operand 12469 states and 14753 transitions. Second operand has 4 states, 4 states have (on average 90.0) internal successors, (360), 3 states have internal predecessors, (360), 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 02:44:12,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:44:12,252 INFO L93 Difference]: Finished difference Result 31388 states and 37539 transitions. [2021-10-16 02:44:12,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:44:12,253 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 90.0) internal successors, (360), 3 states have internal predecessors, (360), 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 290 [2021-10-16 02:44:12,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:44:12,295 INFO L225 Difference]: With dead ends: 31388 [2021-10-16 02:44:12,296 INFO L226 Difference]: Without dead ends: 19175 [2021-10-16 02:44:12,309 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 578 GetRequests, 576 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:44:12,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19175 states. [2021-10-16 02:44:12,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19175 to 19168. [2021-10-16 02:44:12,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19168 states, 19167 states have (on average 1.1641884488965408) internal successors, (22314), 19167 states have internal predecessors, (22314), 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 02:44:12,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19168 states to 19168 states and 22314 transitions. [2021-10-16 02:44:12,680 INFO L78 Accepts]: Start accepts. Automaton has 19168 states and 22314 transitions. Word has length 290 [2021-10-16 02:44:12,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:44:12,681 INFO L470 AbstractCegarLoop]: Abstraction has 19168 states and 22314 transitions. [2021-10-16 02:44:12,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.0) internal successors, (360), 3 states have internal predecessors, (360), 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 02:44:12,682 INFO L276 IsEmpty]: Start isEmpty. Operand 19168 states and 22314 transitions. [2021-10-16 02:44:12,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2021-10-16 02:44:12,703 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:44:12,704 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-16 02:44:12,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-16 02:44:12,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:44:12,921 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:44:12,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:44:12,921 INFO L82 PathProgramCache]: Analyzing trace with hash -738073748, now seen corresponding path program 1 times [2021-10-16 02:44:12,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:44:12,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2109371432] [2021-10-16 02:44:12,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:44:12,926 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:44:12,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:44:12,927 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:44:12,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-16 02:44:22,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:44:22,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:44:22,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:44:23,302 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-10-16 02:44:23,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:44:24,151 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-10-16 02:44:24,152 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:44:24,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2109371432] [2021-10-16 02:44:24,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2109371432] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:44:24,152 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:44:24,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-16 02:44:24,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848652631] [2021-10-16 02:44:24,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:44:24,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:44:24,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:44:24,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:44:24,155 INFO L87 Difference]: Start difference. First operand 19168 states and 22314 transitions. Second operand has 4 states, 4 states have (on average 92.0) internal successors, (368), 3 states have internal predecessors, (368), 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 02:44:26,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:44:26,312 INFO L93 Difference]: Finished difference Result 52306 states and 60688 transitions. [2021-10-16 02:44:26,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:44:26,313 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 92.0) internal successors, (368), 3 states have internal predecessors, (368), 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 291 [2021-10-16 02:44:26,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:44:26,463 INFO L225 Difference]: With dead ends: 52306 [2021-10-16 02:44:26,463 INFO L226 Difference]: Without dead ends: 33394 [2021-10-16 02:44:26,484 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 580 GetRequests, 578 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:44:26,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33394 states. [2021-10-16 02:44:27,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33394 to 26071. [2021-10-16 02:44:27,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26071 states, 26070 states have (on average 1.1262370540851554) internal successors, (29361), 26070 states have internal predecessors, (29361), 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 02:44:27,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26071 states to 26071 states and 29361 transitions. [2021-10-16 02:44:27,084 INFO L78 Accepts]: Start accepts. Automaton has 26071 states and 29361 transitions. Word has length 291 [2021-10-16 02:44:27,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:44:27,085 INFO L470 AbstractCegarLoop]: Abstraction has 26071 states and 29361 transitions. [2021-10-16 02:44:27,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.0) internal successors, (368), 3 states have internal predecessors, (368), 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 02:44:27,085 INFO L276 IsEmpty]: Start isEmpty. Operand 26071 states and 29361 transitions. [2021-10-16 02:44:27,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2021-10-16 02:44:27,109 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:44:27,109 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-16 02:44:27,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-16 02:44:27,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:44:27,310 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:44:27,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:44:27,311 INFO L82 PathProgramCache]: Analyzing trace with hash -931258021, now seen corresponding path program 1 times [2021-10-16 02:44:27,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:44:27,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [50033389] [2021-10-16 02:44:27,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:44:27,316 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:44:27,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:44:27,317 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:44:27,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-16 02:44:36,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:44:36,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:44:36,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:44:36,850 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 197 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-10-16 02:44:36,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:44:37,648 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 197 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-10-16 02:44:37,648 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:44:37,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [50033389] [2021-10-16 02:44:37,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [50033389] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:44:37,649 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:44:37,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-16 02:44:37,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684695749] [2021-10-16 02:44:37,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:44:37,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:44:37,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:44:37,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:44:37,652 INFO L87 Difference]: Start difference. First operand 26071 states and 29361 transitions. Second operand has 4 states, 4 states have (on average 89.25) internal successors, (357), 3 states have internal predecessors, (357), 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 02:44:38,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:44:38,626 INFO L93 Difference]: Finished difference Result 90713 states and 102039 transitions. [2021-10-16 02:44:38,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:44:38,627 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 89.25) internal successors, (357), 3 states have internal predecessors, (357), 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 335 [2021-10-16 02:44:38,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:44:38,726 INFO L225 Difference]: With dead ends: 90713 [2021-10-16 02:44:38,726 INFO L226 Difference]: Without dead ends: 64898 [2021-10-16 02:44:38,754 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 668 GetRequests, 666 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:44:38,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64898 states. [2021-10-16 02:44:39,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64898 to 42335. [2021-10-16 02:44:39,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42335 states, 42334 states have (on average 1.1185571880757783) internal successors, (47353), 42334 states have internal predecessors, (47353), 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 02:44:40,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42335 states to 42335 states and 47353 transitions. [2021-10-16 02:44:40,071 INFO L78 Accepts]: Start accepts. Automaton has 42335 states and 47353 transitions. Word has length 335 [2021-10-16 02:44:40,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:44:40,072 INFO L470 AbstractCegarLoop]: Abstraction has 42335 states and 47353 transitions. [2021-10-16 02:44:40,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.25) internal successors, (357), 3 states have internal predecessors, (357), 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 02:44:40,073 INFO L276 IsEmpty]: Start isEmpty. Operand 42335 states and 47353 transitions. [2021-10-16 02:44:40,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2021-10-16 02:44:40,114 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:44:40,114 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 02:44:40,166 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-10-16 02:44:40,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:44:40,328 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:44:40,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:44:40,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1423565059, now seen corresponding path program 1 times [2021-10-16 02:44:40,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:44:40,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1784963288] [2021-10-16 02:44:40,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:44:40,441 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:44:40,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:44:40,451 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:44:40,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-16 02:44:49,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:44:49,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-16 02:44:49,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:44:53,141 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 272 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-10-16 02:44:53,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:44:57,078 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 272 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-10-16 02:44:57,078 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:44:57,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1784963288] [2021-10-16 02:44:57,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1784963288] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:44:57,078 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:44:57,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-16 02:44:57,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619683991] [2021-10-16 02:44:57,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-16 02:44:57,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:44:57,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-16 02:44:57,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:44:57,081 INFO L87 Difference]: Start difference. First operand 42335 states and 47353 transitions. Second operand has 9 states, 9 states have (on average 73.44444444444444) internal successors, (661), 8 states have internal predecessors, (661), 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 02:45:04,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:45:04,289 INFO L93 Difference]: Finished difference Result 92437 states and 103362 transitions. [2021-10-16 02:45:04,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-16 02:45:04,290 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 73.44444444444444) internal successors, (661), 8 states have internal predecessors, (661), 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 363 [2021-10-16 02:45:04,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:45:04,290 INFO L225 Difference]: With dead ends: 92437 [2021-10-16 02:45:04,290 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 02:45:04,319 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 728 GetRequests, 717 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 143.0ms TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2021-10-16 02:45:04,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 02:45:04,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 02:45:04,320 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 02:45:04,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 02:45:04,320 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 363 [2021-10-16 02:45:04,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:45:04,321 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 02:45:04,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 73.44444444444444) internal successors, (661), 8 states have internal predecessors, (661), 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 02:45:04,321 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 02:45:04,321 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 02:45:04,323 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:45:04,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-16 02:45:04,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:45:04,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 02:45:04,537 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:45:04,572 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:45:06,686 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:45:14,086 INFO L857 garLoopResultBuilder]: For program point L1621(line 1621) no Hoare annotation was computed. [2021-10-16 02:45:14,086 INFO L857 garLoopResultBuilder]: For program point L1555(line 1555) no Hoare annotation was computed. [2021-10-16 02:45:14,086 INFO L857 garLoopResultBuilder]: For program point L498(lines 498 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,086 INFO L857 garLoopResultBuilder]: For program point L1489(line 1489) no Hoare annotation was computed. [2021-10-16 02:45:14,086 INFO L857 garLoopResultBuilder]: For program point L432(lines 432 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,087 INFO L857 garLoopResultBuilder]: For program point L366(lines 366 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,087 INFO L857 garLoopResultBuilder]: For program point L763(lines 763 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,087 INFO L857 garLoopResultBuilder]: For program point L632(lines 632 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,087 INFO L857 garLoopResultBuilder]: For program point L566(lines 566 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,087 INFO L857 garLoopResultBuilder]: For program point L1623-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,087 INFO L857 garLoopResultBuilder]: For program point L1557-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,087 INFO L857 garLoopResultBuilder]: For program point L1491-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,087 INFO L857 garLoopResultBuilder]: For program point L302(lines 302 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,087 INFO L857 garLoopResultBuilder]: For program point L1293(lines 1293 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,087 INFO L857 garLoopResultBuilder]: For program point L1624(line 1624) no Hoare annotation was computed. [2021-10-16 02:45:14,087 INFO L857 garLoopResultBuilder]: For program point L1558(line 1558) no Hoare annotation was computed. [2021-10-16 02:45:14,087 INFO L857 garLoopResultBuilder]: For program point L1492(line 1492) no Hoare annotation was computed. [2021-10-16 02:45:14,088 INFO L857 garLoopResultBuilder]: For program point L1360(lines 1360 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,088 INFO L857 garLoopResultBuilder]: For program point L1294(lines 1294 1313) no Hoare annotation was computed. [2021-10-16 02:45:14,088 INFO L857 garLoopResultBuilder]: For program point L1294-2(lines 1294 1313) no Hoare annotation was computed. [2021-10-16 02:45:14,088 INFO L857 garLoopResultBuilder]: For program point L1162(lines 1162 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,088 INFO L857 garLoopResultBuilder]: For program point L105(lines 105 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,088 INFO L857 garLoopResultBuilder]: For program point L1096(lines 1096 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,088 INFO L857 garLoopResultBuilder]: For program point L1031(lines 1031 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,089 INFO L857 garLoopResultBuilder]: For program point L965(lines 965 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,089 INFO L857 garLoopResultBuilder]: For program point L899(lines 899 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,089 INFO L857 garLoopResultBuilder]: For program point L1626-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,089 INFO L857 garLoopResultBuilder]: For program point L1560-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,089 INFO L857 garLoopResultBuilder]: For program point L1494-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,089 INFO L857 garLoopResultBuilder]: For program point L1627(line 1627) no Hoare annotation was computed. [2021-10-16 02:45:14,089 INFO L857 garLoopResultBuilder]: For program point L1561(line 1561) no Hoare annotation was computed. [2021-10-16 02:45:14,089 INFO L857 garLoopResultBuilder]: For program point L1495(line 1495) no Hoare annotation was computed. [2021-10-16 02:45:14,089 INFO L857 garLoopResultBuilder]: For program point L174(lines 174 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,089 INFO L857 garLoopResultBuilder]: For program point L835(lines 835 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,089 INFO L857 garLoopResultBuilder]: For program point L1629-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,089 INFO L857 garLoopResultBuilder]: For program point L1563-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,089 INFO L857 garLoopResultBuilder]: For program point L1497-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,089 INFO L857 garLoopResultBuilder]: For program point L771(lines 771 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,090 INFO L857 garLoopResultBuilder]: For program point L1630(line 1630) no Hoare annotation was computed. [2021-10-16 02:45:14,090 INFO L857 garLoopResultBuilder]: For program point L1564(line 1564) no Hoare annotation was computed. [2021-10-16 02:45:14,090 INFO L857 garLoopResultBuilder]: For program point L507(lines 507 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,090 INFO L857 garLoopResultBuilder]: For program point L1498(line 1498) no Hoare annotation was computed. [2021-10-16 02:45:14,090 INFO L857 garLoopResultBuilder]: For program point L243(lines 243 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,090 INFO L857 garLoopResultBuilder]: For program point L508(lines 508 521) no Hoare annotation was computed. [2021-10-16 02:45:14,090 INFO L857 garLoopResultBuilder]: For program point L508-2(lines 508 521) no Hoare annotation was computed. [2021-10-16 02:45:14,090 INFO L857 garLoopResultBuilder]: For program point L1433(lines 1433 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,090 INFO L857 garLoopResultBuilder]: For program point L376(lines 376 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,090 INFO L857 garLoopResultBuilder]: For program point L1632-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,090 INFO L857 garLoopResultBuilder]: For program point L1566-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,091 INFO L857 garLoopResultBuilder]: For program point L1500-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,091 INFO L857 garLoopResultBuilder]: For program point L311(lines 311 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,091 INFO L857 garLoopResultBuilder]: For program point L1236(lines 1236 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,091 INFO L857 garLoopResultBuilder]: For program point L1633(line 1633) no Hoare annotation was computed. [2021-10-16 02:45:14,091 INFO L857 garLoopResultBuilder]: For program point L576(lines 576 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,091 INFO L857 garLoopResultBuilder]: For program point L1567(line 1567) no Hoare annotation was computed. [2021-10-16 02:45:14,091 INFO L857 garLoopResultBuilder]: For program point L1501(line 1501) no Hoare annotation was computed. [2021-10-16 02:45:14,091 INFO L857 garLoopResultBuilder]: For program point L444(lines 444 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,091 INFO L857 garLoopResultBuilder]: For program point L1369(lines 1369 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,091 INFO L857 garLoopResultBuilder]: For program point L1105(lines 1105 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,091 INFO L857 garLoopResultBuilder]: For program point L643(lines 643 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,092 INFO L857 garLoopResultBuilder]: For program point L1370(lines 1370 1389) no Hoare annotation was computed. [2021-10-16 02:45:14,092 INFO L857 garLoopResultBuilder]: For program point L1370-2(lines 1370 1389) no Hoare annotation was computed. [2021-10-16 02:45:14,092 INFO L857 garLoopResultBuilder]: For program point L1172(lines 1172 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,092 INFO L857 garLoopResultBuilder]: For program point L115(lines 115 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,092 INFO L857 garLoopResultBuilder]: For program point L1635-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,092 INFO L857 garLoopResultBuilder]: For program point L1569-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,092 INFO L857 garLoopResultBuilder]: For program point L1503-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,093 INFO L857 garLoopResultBuilder]: For program point L248(lines 248 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,093 INFO L857 garLoopResultBuilder]: For program point L182(lines 182 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,093 INFO L857 garLoopResultBuilder]: For program point L1041(lines 1041 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,093 INFO L857 garLoopResultBuilder]: For program point L909(lines 909 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,093 INFO L857 garLoopResultBuilder]: For program point L711(lines 711 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,093 INFO L857 garLoopResultBuilder]: For program point L1636(line 1636) no Hoare annotation was computed. [2021-10-16 02:45:14,094 INFO L857 garLoopResultBuilder]: For program point L1570(line 1570) no Hoare annotation was computed. [2021-10-16 02:45:14,094 INFO L857 garLoopResultBuilder]: For program point L1504(line 1504) no Hoare annotation was computed. [2021-10-16 02:45:14,094 INFO L857 garLoopResultBuilder]: For program point L976(lines 976 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,094 INFO L857 garLoopResultBuilder]: For program point L779(lines 779 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,094 INFO L857 garLoopResultBuilder]: For program point L1638-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,094 INFO L857 garLoopResultBuilder]: For program point L1572-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,094 INFO L857 garLoopResultBuilder]: For program point L1506-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,094 INFO L857 garLoopResultBuilder]: For program point L846(lines 846 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,094 INFO L857 garLoopResultBuilder]: For program point L1639(line 1639) no Hoare annotation was computed. [2021-10-16 02:45:14,094 INFO L857 garLoopResultBuilder]: For program point L1573(line 1573) no Hoare annotation was computed. [2021-10-16 02:45:14,095 INFO L857 garLoopResultBuilder]: For program point L1507(line 1507) no Hoare annotation was computed. [2021-10-16 02:45:14,095 INFO L857 garLoopResultBuilder]: For program point L451(lines 451 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,095 INFO L857 garLoopResultBuilder]: For program point L1442(lines 1442 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,095 INFO L857 garLoopResultBuilder]: For program point L584(lines 584 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,095 INFO L857 garLoopResultBuilder]: For program point L1641-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,095 INFO L857 garLoopResultBuilder]: For program point L1575-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,095 INFO L857 garLoopResultBuilder]: For program point L1509-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,095 INFO L857 garLoopResultBuilder]: For program point L1642(line 1642) no Hoare annotation was computed. [2021-10-16 02:45:14,095 INFO L857 garLoopResultBuilder]: For program point L1576(line 1576) no Hoare annotation was computed. [2021-10-16 02:45:14,095 INFO L857 garLoopResultBuilder]: For program point L1510(line 1510) no Hoare annotation was computed. [2021-10-16 02:45:14,095 INFO L857 garLoopResultBuilder]: For program point L387(lines 387 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,095 INFO L857 garLoopResultBuilder]: For program point L1114(lines 1114 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,095 INFO L857 garLoopResultBuilder]: For program point L1048(lines 1048 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,096 INFO L857 garLoopResultBuilder]: For program point L388(lines 388 405) no Hoare annotation was computed. [2021-10-16 02:45:14,096 INFO L857 garLoopResultBuilder]: For program point L322(lines 322 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,096 INFO L857 garLoopResultBuilder]: For program point L388-2(lines 388 405) no Hoare annotation was computed. [2021-10-16 02:45:14,096 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 02:45:14,096 INFO L857 garLoopResultBuilder]: For program point L1247(lines 1247 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,096 INFO L857 garLoopResultBuilder]: For program point L124(lines 124 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,096 INFO L857 garLoopResultBuilder]: For program point L1049(lines 1049 1069) no Hoare annotation was computed. [2021-10-16 02:45:14,096 INFO L857 garLoopResultBuilder]: For program point L1049-2(lines 1049 1069) no Hoare annotation was computed. [2021-10-16 02:45:14,096 INFO L857 garLoopResultBuilder]: For program point L917(lines 917 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,096 INFO L857 garLoopResultBuilder]: For program point L719(lines 719 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,097 INFO L857 garLoopResultBuilder]: For program point L653(lines 653 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,097 INFO L857 garLoopResultBuilder]: For program point L1644-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,097 INFO L857 garLoopResultBuilder]: For program point L1578-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,097 INFO L857 garLoopResultBuilder]: For program point L1512-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,097 INFO L857 garLoopResultBuilder]: For program point L191(lines 191 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,097 INFO L857 garLoopResultBuilder]: For program point L720(lines 720 741) no Hoare annotation was computed. [2021-10-16 02:45:14,098 INFO L857 garLoopResultBuilder]: For program point L720-2(lines 720 741) no Hoare annotation was computed. [2021-10-16 02:45:14,098 INFO L857 garLoopResultBuilder]: For program point L1645(line 1645) no Hoare annotation was computed. [2021-10-16 02:45:14,098 INFO L857 garLoopResultBuilder]: For program point L1579(line 1579) no Hoare annotation was computed. [2021-10-16 02:45:14,098 INFO L857 garLoopResultBuilder]: For program point L1513(line 1513) no Hoare annotation was computed. [2021-10-16 02:45:14,098 INFO L857 garLoopResultBuilder]: For program point L1315(lines 1315 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,098 INFO L857 garLoopResultBuilder]: For program point L258(lines 258 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,098 INFO L857 garLoopResultBuilder]: For program point L1183(lines 1183 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,099 INFO L857 garLoopResultBuilder]: For program point L985(lines 985 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,099 INFO L857 garLoopResultBuilder]: For program point L787(lines 787 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,099 INFO L857 garLoopResultBuilder]: For program point L523(lines 523 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,099 INFO L857 garLoopResultBuilder]: For program point L854(lines 854 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,099 INFO L857 garLoopResultBuilder]: For program point L1647-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,099 INFO L857 garLoopResultBuilder]: For program point L1581-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,100 INFO L857 garLoopResultBuilder]: For program point L1515-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,100 INFO L857 garLoopResultBuilder]: For program point L1648(line 1648) no Hoare annotation was computed. [2021-10-16 02:45:14,100 INFO L857 garLoopResultBuilder]: For program point L1582(line 1582) no Hoare annotation was computed. [2021-10-16 02:45:14,100 INFO L857 garLoopResultBuilder]: For program point L1516(line 1516) no Hoare annotation was computed. [2021-10-16 02:45:14,100 INFO L857 garLoopResultBuilder]: For program point L460(lines 460 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,100 INFO L857 garLoopResultBuilder]: For program point L593(lines 593 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,100 INFO L857 garLoopResultBuilder]: For program point L1650-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,101 INFO L857 garLoopResultBuilder]: For program point L1584-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,101 INFO L857 garLoopResultBuilder]: For program point L1518-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,101 INFO L857 garLoopResultBuilder]: For program point L1452(lines 1452 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,101 INFO L857 garLoopResultBuilder]: For program point L329(lines 329 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,101 INFO L857 garLoopResultBuilder]: For program point L1122(lines 1122 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,101 INFO L857 garLoopResultBuilder]: For program point L65(lines 65 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,101 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-16 02:45:14,102 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 1522) no Hoare annotation was computed. [2021-10-16 02:45:14,102 INFO L857 garLoopResultBuilder]: For program point L1651(line 1651) no Hoare annotation was computed. [2021-10-16 02:45:14,102 INFO L857 garLoopResultBuilder]: For program point L1585(line 1585) no Hoare annotation was computed. [2021-10-16 02:45:14,102 INFO L857 garLoopResultBuilder]: For program point L1519(line 1519) no Hoare annotation was computed. [2021-10-16 02:45:14,102 INFO L857 garLoopResultBuilder]: For program point L66(lines 66 81) no Hoare annotation was computed. [2021-10-16 02:45:14,102 INFO L857 garLoopResultBuilder]: For program point L66-2(lines 66 81) no Hoare annotation was computed. [2021-10-16 02:45:14,103 INFO L857 garLoopResultBuilder]: For program point L794(lines 794 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,103 INFO L857 garLoopResultBuilder]: For program point L1653-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,103 INFO L857 garLoopResultBuilder]: For program point L1587-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,103 INFO L857 garLoopResultBuilder]: For program point L1521-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,103 INFO L857 garLoopResultBuilder]: For program point L1323(lines 1323 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,103 INFO L857 garLoopResultBuilder]: For program point L993(lines 993 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,104 INFO L857 garLoopResultBuilder]: For program point L927(lines 927 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,104 INFO L857 garLoopResultBuilder]: For program point L663(lines 663 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,104 INFO L857 garLoopResultBuilder]: For program point L1654(line 1654) no Hoare annotation was computed. [2021-10-16 02:45:14,104 INFO L857 garLoopResultBuilder]: For program point L1588(line 1588) no Hoare annotation was computed. [2021-10-16 02:45:14,104 INFO L857 garLoopResultBuilder]: For program point L1522(line 1522) no Hoare annotation was computed. [2021-10-16 02:45:14,104 INFO L857 garLoopResultBuilder]: For program point L267(lines 267 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,104 INFO L857 garLoopResultBuilder]: For program point L201(lines 201 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,105 INFO L857 garLoopResultBuilder]: For program point L1192(lines 1192 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,105 INFO L857 garLoopResultBuilder]: For program point L928(lines 928 945) no Hoare annotation was computed. [2021-10-16 02:45:14,105 INFO L857 garLoopResultBuilder]: For program point L928-2(lines 928 945) no Hoare annotation was computed. [2021-10-16 02:45:14,105 INFO L857 garLoopResultBuilder]: For program point L532(lines 532 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,105 INFO L857 garLoopResultBuilder]: For program point L1391(lines 1391 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,105 INFO L857 garLoopResultBuilder]: For program point L1259(lines 1259 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,105 INFO L857 garLoopResultBuilder]: For program point L202(lines 202 221) no Hoare annotation was computed. [2021-10-16 02:45:14,106 INFO L857 garLoopResultBuilder]: For program point L136(lines 136 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,106 INFO L857 garLoopResultBuilder]: For program point L202-2(lines 202 221) no Hoare annotation was computed. [2021-10-16 02:45:14,106 INFO L857 garLoopResultBuilder]: For program point L863(lines 863 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,106 INFO L857 garLoopResultBuilder]: For program point L1656-1(lines 1656 1658) no Hoare annotation was computed. [2021-10-16 02:45:14,106 INFO L857 garLoopResultBuilder]: For program point L1590-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,106 INFO L857 garLoopResultBuilder]: For program point L1524-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,107 INFO L857 garLoopResultBuilder]: For program point L1392(lines 1392 1410) no Hoare annotation was computed. [2021-10-16 02:45:14,107 INFO L857 garLoopResultBuilder]: For program point L1392-2(lines 1392 1410) no Hoare annotation was computed. [2021-10-16 02:45:14,107 INFO L857 garLoopResultBuilder]: For program point L1260(lines 1260 1282) no Hoare annotation was computed. [2021-10-16 02:45:14,107 INFO L857 garLoopResultBuilder]: For program point L1260-2(lines 1260 1282) no Hoare annotation was computed. [2021-10-16 02:45:14,107 INFO L857 garLoopResultBuilder]: For program point L1657(line 1657) no Hoare annotation was computed. [2021-10-16 02:45:14,107 INFO L857 garLoopResultBuilder]: For program point L1591(line 1591) no Hoare annotation was computed. [2021-10-16 02:45:14,108 INFO L857 garLoopResultBuilder]: For program point L1525(line 1525) no Hoare annotation was computed. [2021-10-16 02:45:14,108 INFO L857 garLoopResultBuilder]: For program point L468(lines 468 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,108 INFO L857 garLoopResultBuilder]: For program point L1130(lines 1130 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,108 INFO L857 garLoopResultBuilder]: For program point L668(lines 668 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,109 INFO L853 garLoopResultBuilder]: At program point L1659(lines 64 1660) the Hoare annotation is: (let ((.cse0 (= ~a5~0 (_ bv1 32))) (.cse12 (not (= ~a6~0 (_ bv1 32)))) (.cse7 (= (_ bv1 32) ~a27~0)) (.cse13 (= (_ bv1 32) ~a26~0))) (let ((.cse6 (= (_ bv0 32) ~a11~0)) (.cse15 (= (_ bv1 32) ~a15~0)) (.cse9 (= (_ bv0 32) ~a26~0)) (.cse4 (not (= ~a3~0 (_ bv1 32)))) (.cse10 (or (not .cse7) .cse13)) (.cse2 (or (not .cse0) (not .cse13) .cse12)) (.cse11 (not (= (_ bv1 32) ~a11~0))) (.cse3 (= (_ bv1 32) ~a12~0)) (.cse14 (= ~a3~0 (_ bv0 32))) (.cse1 (not (= (_ bv1 32) ~a23~0))) (.cse5 (= (_ bv0 32) ~a12~0)) (.cse8 (= (_ bv1 32) ~a18~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse5 .cse6 .cse4) (and .cse7 .cse0 .cse5 .cse8 .cse9 .cse4) (and .cse10 .cse0 .cse11 .cse5 .cse12) (and .cse0 .cse13 .cse6 .cse3) (and .cse0 .cse1 .cse5 .cse6) (and .cse7 .cse0 .cse13 .cse14) (and .cse7 .cse0 .cse5 .cse14 .cse9) (and .cse7 .cse0 .cse5 .cse13) (and .cse7 .cse10 .cse0 .cse11 .cse3) (and .cse0 .cse5 .cse13 .cse8 .cse4) (and .cse0 .cse15 .cse5 .cse13 .cse8 (= (_ bv0 32) ~a27~0)) (and .cse0 .cse9 .cse3 .cse4) (and .cse7 .cse0 .cse13 .cse3 .cse4) (and .cse7 .cse0 .cse15 .cse13 .cse3) (and .cse7 .cse0 .cse15 .cse5 .cse12 .cse8 .cse9) (and .cse10 .cse0 .cse11 .cse5 .cse4) (and .cse7 .cse0 .cse11 .cse2 .cse13 .cse4) (and .cse7 .cse0 .cse1 .cse11 .cse5) (and .cse7 .cse0 .cse11 .cse5 .cse9) (and .cse10 .cse0 .cse5 .cse12 .cse8 .cse4) (and .cse10 .cse0 .cse2 .cse3) (and .cse0 .cse11 .cse5 .cse13) (and .cse0 .cse13 .cse14 .cse3) (and .cse0 .cse5 .cse13 .cse14) (and .cse0 .cse1 .cse5 .cse12 .cse8)))) [2021-10-16 02:45:14,109 INFO L857 garLoopResultBuilder]: For program point L602(lines 602 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,109 INFO L857 garLoopResultBuilder]: For program point L1593-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,109 INFO L857 garLoopResultBuilder]: For program point L1527-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,109 INFO L857 garLoopResultBuilder]: For program point L1594(line 1594) no Hoare annotation was computed. [2021-10-16 02:45:14,109 INFO L857 garLoopResultBuilder]: For program point L1528(line 1528) no Hoare annotation was computed. [2021-10-16 02:45:14,110 INFO L857 garLoopResultBuilder]: For program point L1462(lines 1462 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,110 INFO L857 garLoopResultBuilder]: For program point L339(lines 339 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,110 INFO L857 garLoopResultBuilder]: For program point L1331(lines 1331 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,110 INFO L860 garLoopResultBuilder]: At program point L1662(lines 1662 1679) the Hoare annotation is: true [2021-10-16 02:45:14,110 INFO L857 garLoopResultBuilder]: For program point L539(lines 539 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,110 INFO L857 garLoopResultBuilder]: For program point L1596-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,110 INFO L857 garLoopResultBuilder]: For program point L1530-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,111 INFO L857 garLoopResultBuilder]: For program point L407(lines 407 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,111 INFO L857 garLoopResultBuilder]: For program point L275(lines 275 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,111 INFO L857 garLoopResultBuilder]: For program point L1200(lines 1200 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,111 INFO L857 garLoopResultBuilder]: For program point L1597(line 1597) no Hoare annotation was computed. [2021-10-16 02:45:14,111 INFO L857 garLoopResultBuilder]: For program point L1531(line 1531) no Hoare annotation was computed. [2021-10-16 02:45:14,111 INFO L857 garLoopResultBuilder]: For program point L805(lines 805 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,112 INFO L857 garLoopResultBuilder]: For program point L145(lines 145 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,112 INFO L857 garLoopResultBuilder]: For program point L1004(lines 1004 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,112 INFO L857 garLoopResultBuilder]: For program point L1599-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,112 INFO L857 garLoopResultBuilder]: For program point L1533-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,112 INFO L857 garLoopResultBuilder]: For program point L1137(lines 1137 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,112 INFO L857 garLoopResultBuilder]: For program point L1071(lines 1071 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,112 INFO L857 garLoopResultBuilder]: For program point L873(lines 873 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,113 INFO L857 garLoopResultBuilder]: For program point L675(lines 675 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,113 INFO L857 garLoopResultBuilder]: For program point L1600(line 1600) no Hoare annotation was computed. [2021-10-16 02:45:14,113 INFO L857 garLoopResultBuilder]: For program point L1534(line 1534) no Hoare annotation was computed. [2021-10-16 02:45:14,113 INFO L857 garLoopResultBuilder]: For program point L477(lines 477 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,113 INFO L857 garLoopResultBuilder]: For program point L1336(lines 1336 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,113 INFO L857 garLoopResultBuilder]: For program point L478(lines 478 488) no Hoare annotation was computed. [2021-10-16 02:45:14,113 INFO L857 garLoopResultBuilder]: For program point L478-2(lines 478 488) no Hoare annotation was computed. [2021-10-16 02:45:14,114 INFO L857 garLoopResultBuilder]: For program point L743(lines 743 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,114 INFO L853 garLoopResultBuilder]: At program point L1668-2(lines 1668 1678) the Hoare annotation is: (let ((.cse0 (= ~a5~0 (_ bv1 32))) (.cse12 (not (= ~a6~0 (_ bv1 32)))) (.cse7 (= (_ bv1 32) ~a27~0)) (.cse13 (= (_ bv1 32) ~a26~0))) (let ((.cse6 (= (_ bv0 32) ~a11~0)) (.cse15 (= (_ bv1 32) ~a15~0)) (.cse9 (= (_ bv0 32) ~a26~0)) (.cse4 (not (= ~a3~0 (_ bv1 32)))) (.cse10 (or (not .cse7) .cse13)) (.cse2 (or (not .cse0) (not .cse13) .cse12)) (.cse11 (not (= (_ bv1 32) ~a11~0))) (.cse3 (= (_ bv1 32) ~a12~0)) (.cse14 (= ~a3~0 (_ bv0 32))) (.cse1 (not (= (_ bv1 32) ~a23~0))) (.cse5 (= (_ bv0 32) ~a12~0)) (.cse8 (= (_ bv1 32) ~a18~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse5 .cse6 .cse4) (and .cse7 .cse0 .cse5 .cse8 .cse9 .cse4) (and .cse10 .cse0 .cse11 .cse5 .cse12) (and .cse0 .cse13 .cse6 .cse3) (and .cse0 .cse1 .cse5 .cse6) (and .cse7 .cse0 .cse13 .cse14) (and .cse7 .cse0 .cse5 .cse14 .cse9) (and .cse7 .cse0 .cse5 .cse13) (and .cse7 .cse10 .cse0 .cse11 .cse3) (and .cse0 .cse5 .cse13 .cse8 .cse4) (and .cse0 .cse15 .cse5 .cse13 .cse8 (= (_ bv0 32) ~a27~0)) (and .cse0 .cse9 .cse3 .cse4) (and .cse7 .cse0 .cse13 .cse3 .cse4) (and .cse7 .cse0 .cse15 .cse13 .cse3) (and .cse7 .cse0 .cse15 .cse5 .cse12 .cse8 .cse9) (and .cse10 .cse0 .cse11 .cse5 .cse4) (and .cse7 .cse0 .cse11 .cse2 .cse13 .cse4) (and .cse7 .cse0 .cse1 .cse11 .cse5) (and .cse7 .cse0 .cse11 .cse5 .cse9) (and .cse10 .cse0 .cse5 .cse12 .cse8 .cse4) (and .cse10 .cse0 .cse2 .cse3) (and .cse0 .cse11 .cse5 .cse13) (and .cse0 .cse13 .cse14 .cse3) (and .cse0 .cse5 .cse13 .cse14) (and .cse0 .cse1 .cse5 .cse12 .cse8)))) [2021-10-16 02:45:14,114 INFO L857 garLoopResultBuilder]: For program point L1602-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,114 INFO L857 garLoopResultBuilder]: For program point L1536-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,115 INFO L857 garLoopResultBuilder]: For program point L1470(lines 1470 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,115 INFO L857 garLoopResultBuilder]: For program point L83(lines 83 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,115 INFO L857 garLoopResultBuilder]: For program point L1603(line 1603) no Hoare annotation was computed. [2021-10-16 02:45:14,115 INFO L857 garLoopResultBuilder]: For program point L1537(line 1537) no Hoare annotation was computed. [2021-10-16 02:45:14,115 INFO L857 garLoopResultBuilder]: For program point L613(lines 613 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,115 INFO L857 garLoopResultBuilder]: For program point L415(lines 415 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,116 INFO L857 garLoopResultBuilder]: For program point L349(lines 349 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,116 INFO L857 garLoopResultBuilder]: For program point L1142(lines 1142 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,116 INFO L857 garLoopResultBuilder]: For program point L1076(lines 1076 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,116 INFO L857 garLoopResultBuilder]: For program point L878(lines 878 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,116 INFO L857 garLoopResultBuilder]: For program point L1605-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,116 INFO L857 garLoopResultBuilder]: For program point L1539-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,116 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 02:45:14,117 INFO L857 garLoopResultBuilder]: For program point L879(lines 879 897) no Hoare annotation was computed. [2021-10-16 02:45:14,117 INFO L857 garLoopResultBuilder]: For program point L879-2(lines 879 897) no Hoare annotation was computed. [2021-10-16 02:45:14,117 INFO L857 garLoopResultBuilder]: For program point L1606(line 1606) no Hoare annotation was computed. [2021-10-16 02:45:14,117 INFO L857 garLoopResultBuilder]: For program point L549(lines 549 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,117 INFO L857 garLoopResultBuilder]: For program point L1540(line 1540) no Hoare annotation was computed. [2021-10-16 02:45:14,117 INFO L857 garLoopResultBuilder]: For program point L1210(lines 1210 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,118 INFO L857 garLoopResultBuilder]: For program point L814(lines 814 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,118 INFO L857 garLoopResultBuilder]: For program point L1673(line 1673) no Hoare annotation was computed. [2021-10-16 02:45:14,118 INFO L857 garLoopResultBuilder]: For program point L286(lines 286 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,118 INFO L857 garLoopResultBuilder]: For program point L1013(lines 1013 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,118 INFO L857 garLoopResultBuilder]: For program point L947(lines 947 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,118 INFO L857 garLoopResultBuilder]: For program point L1608-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,118 INFO L857 garLoopResultBuilder]: For program point L1542-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,119 INFO L857 garLoopResultBuilder]: For program point L1476(lines 1476 1478) no Hoare annotation was computed. [2021-10-16 02:45:14,119 INFO L857 garLoopResultBuilder]: For program point L1476-2(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,119 INFO L857 garLoopResultBuilder]: For program point L1609(line 1609) no Hoare annotation was computed. [2021-10-16 02:45:14,119 INFO L857 garLoopResultBuilder]: For program point L1543(line 1543) no Hoare annotation was computed. [2021-10-16 02:45:14,119 INFO L857 garLoopResultBuilder]: For program point L1477(line 1477) no Hoare annotation was computed. [2021-10-16 02:45:14,119 INFO L857 garLoopResultBuilder]: For program point L156(lines 156 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,120 INFO L857 garLoopResultBuilder]: For program point L685(lines 685 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,120 INFO L857 garLoopResultBuilder]: For program point L1412(lines 1412 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,120 INFO L857 garLoopResultBuilder]: For program point L1346(lines 1346 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,120 INFO L857 garLoopResultBuilder]: For program point L223(lines 223 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,120 INFO L857 garLoopResultBuilder]: For program point L1611-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,120 INFO L857 garLoopResultBuilder]: For program point L1545-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,120 INFO L857 garLoopResultBuilder]: For program point L1479-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,121 INFO L857 garLoopResultBuilder]: For program point L1413(lines 1413 1431) no Hoare annotation was computed. [2021-10-16 02:45:14,121 INFO L857 garLoopResultBuilder]: For program point L1413-2(lines 1413 1431) no Hoare annotation was computed. [2021-10-16 02:45:14,121 INFO L857 garLoopResultBuilder]: For program point L92(lines 92 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,121 INFO L857 garLoopResultBuilder]: For program point L753(lines 753 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,121 INFO L857 garLoopResultBuilder]: For program point L1612(line 1612) no Hoare annotation was computed. [2021-10-16 02:45:14,121 INFO L857 garLoopResultBuilder]: For program point L1546(line 1546) no Hoare annotation was computed. [2021-10-16 02:45:14,122 INFO L857 garLoopResultBuilder]: For program point L1480(line 1480) no Hoare annotation was computed. [2021-10-16 02:45:14,122 INFO L857 garLoopResultBuilder]: For program point L1084(lines 1084 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,122 INFO L857 garLoopResultBuilder]: For program point L556(lines 556 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,122 INFO L857 garLoopResultBuilder]: For program point L490(lines 490 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,122 INFO L857 garLoopResultBuilder]: For program point L424(lines 424 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,122 INFO L857 garLoopResultBuilder]: For program point L358(lines 358 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,122 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-16 02:45:14,123 INFO L857 garLoopResultBuilder]: For program point L1614-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,123 INFO L857 garLoopResultBuilder]: For program point L1548-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,123 INFO L857 garLoopResultBuilder]: For program point L1482-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,123 INFO L857 garLoopResultBuilder]: For program point L1284(lines 1284 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,123 INFO L857 garLoopResultBuilder]: For program point L1152(lines 1152 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,123 INFO L857 garLoopResultBuilder]: For program point L624(lines 624 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,124 INFO L857 garLoopResultBuilder]: For program point L1615(line 1615) no Hoare annotation was computed. [2021-10-16 02:45:14,124 INFO L857 garLoopResultBuilder]: For program point L1549(line 1549) no Hoare annotation was computed. [2021-10-16 02:45:14,124 INFO L857 garLoopResultBuilder]: For program point L1483(line 1483) no Hoare annotation was computed. [2021-10-16 02:45:14,124 INFO L857 garLoopResultBuilder]: For program point L294(lines 294 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,124 INFO L857 garLoopResultBuilder]: For program point L1021(lines 1021 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,124 INFO L857 garLoopResultBuilder]: For program point L823(lines 823 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,125 INFO L857 garLoopResultBuilder]: For program point L1220(lines 1220 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,125 INFO L857 garLoopResultBuilder]: For program point L1617-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,125 INFO L857 garLoopResultBuilder]: For program point L1551-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,125 INFO L857 garLoopResultBuilder]: For program point L1485-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,125 INFO L857 garLoopResultBuilder]: For program point L1221(lines 1221 1234) no Hoare annotation was computed. [2021-10-16 02:45:14,125 INFO L857 garLoopResultBuilder]: For program point L1221-2(lines 1221 1234) no Hoare annotation was computed. [2021-10-16 02:45:14,126 INFO L857 garLoopResultBuilder]: For program point L957(lines 957 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,126 INFO L857 garLoopResultBuilder]: For program point L1618(line 1618) no Hoare annotation was computed. [2021-10-16 02:45:14,126 INFO L857 garLoopResultBuilder]: For program point L1552(line 1552) no Hoare annotation was computed. [2021-10-16 02:45:14,126 INFO L857 garLoopResultBuilder]: For program point L1486(line 1486) no Hoare annotation was computed. [2021-10-16 02:45:14,126 INFO L857 garLoopResultBuilder]: For program point L1354(lines 1354 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,126 INFO L857 garLoopResultBuilder]: For program point L165(lines 165 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,126 INFO L857 garLoopResultBuilder]: For program point L99(lines 99 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,127 INFO L857 garLoopResultBuilder]: For program point L694(lines 694 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,127 INFO L857 garLoopResultBuilder]: For program point L232(lines 232 1475) no Hoare annotation was computed. [2021-10-16 02:45:14,127 INFO L857 garLoopResultBuilder]: For program point L695(lines 695 709) no Hoare annotation was computed. [2021-10-16 02:45:14,127 INFO L857 garLoopResultBuilder]: For program point L695-2(lines 695 709) no Hoare annotation was computed. [2021-10-16 02:45:14,127 INFO L857 garLoopResultBuilder]: For program point L1620-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,127 INFO L857 garLoopResultBuilder]: For program point L1554-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,128 INFO L857 garLoopResultBuilder]: For program point L1488-1(lines 64 1660) no Hoare annotation was computed. [2021-10-16 02:45:14,132 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:45:14,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:45:14 BoogieIcfgContainer [2021-10-16 02:45:14,164 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:45:14,165 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:45:14,165 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:45:14,192 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:45:14,192 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:38:19" (3/4) ... [2021-10-16 02:45:14,196 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 02:45:14,247 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-16 02:45:14,251 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-16 02:45:14,255 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:45:14,259 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:45:14,483 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:45:14,483 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:45:14,485 INFO L168 Benchmark]: Toolchain (without parser) took 420523.84 ms. Allocated memory was 54.5 MB in the beginning and 1.9 GB in the end (delta: 1.8 GB). Free memory was 37.8 MB in the beginning and 895.8 MB in the end (delta: -858.0 MB). Peak memory consumption was 1.6 GB. Max. memory is 16.1 GB. [2021-10-16 02:45:14,486 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 54.5 MB. Free memory was 35.6 MB in the beginning and 35.5 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:45:14,487 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1614.22 ms. Allocated memory was 54.5 MB in the beginning and 69.2 MB in the end (delta: 14.7 MB). Free memory was 37.5 MB in the beginning and 39.8 MB in the end (delta: -2.3 MB). Peak memory consumption was 28.9 MB. Max. memory is 16.1 GB. [2021-10-16 02:45:14,489 INFO L168 Benchmark]: Boogie Procedure Inliner took 274.07 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 39.8 MB in the beginning and 49.6 MB in the end (delta: -9.8 MB). Peak memory consumption was 21.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:45:14,491 INFO L168 Benchmark]: Boogie Preprocessor took 239.85 ms. Allocated memory is still 83.9 MB. Free memory was 49.6 MB in the beginning and 39.5 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:45:14,491 INFO L168 Benchmark]: RCFGBuilder took 3485.83 ms. Allocated memory was 83.9 MB in the beginning and 115.3 MB in the end (delta: 31.5 MB). Free memory was 39.5 MB in the beginning and 43.5 MB in the end (delta: -4.0 MB). Peak memory consumption was 30.8 MB. Max. memory is 16.1 GB. [2021-10-16 02:45:14,491 INFO L168 Benchmark]: TraceAbstraction took 414582.08 ms. Allocated memory was 115.3 MB in the beginning and 1.9 GB in the end (delta: 1.7 GB). Free memory was 43.5 MB in the beginning and 290.8 MB in the end (delta: -247.3 MB). Peak memory consumption was 1.5 GB. Max. memory is 16.1 GB. [2021-10-16 02:45:14,492 INFO L168 Benchmark]: Witness Printer took 318.16 ms. Allocated memory is still 1.9 GB. Free memory was 290.8 MB in the beginning and 895.8 MB in the end (delta: -605.0 MB). Peak memory consumption was 3.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:45:14,497 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 54.5 MB. Free memory was 35.6 MB in the beginning and 35.5 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1614.22 ms. Allocated memory was 54.5 MB in the beginning and 69.2 MB in the end (delta: 14.7 MB). Free memory was 37.5 MB in the beginning and 39.8 MB in the end (delta: -2.3 MB). Peak memory consumption was 28.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 274.07 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 39.8 MB in the beginning and 49.6 MB in the end (delta: -9.8 MB). Peak memory consumption was 21.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 239.85 ms. Allocated memory is still 83.9 MB. Free memory was 49.6 MB in the beginning and 39.5 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * RCFGBuilder took 3485.83 ms. Allocated memory was 83.9 MB in the beginning and 115.3 MB in the end (delta: 31.5 MB). Free memory was 39.5 MB in the beginning and 43.5 MB in the end (delta: -4.0 MB). Peak memory consumption was 30.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 414582.08 ms. Allocated memory was 115.3 MB in the beginning and 1.9 GB in the end (delta: 1.7 GB). Free memory was 43.5 MB in the beginning and 290.8 MB in the end (delta: -247.3 MB). Peak memory consumption was 1.5 GB. Max. memory is 16.1 GB. * Witness Printer took 318.16 ms. Allocated memory is still 1.9 GB. Free memory was 290.8 MB in the beginning and 895.8 MB in the end (delta: -605.0 MB). Peak memory consumption was 3.1 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: 1522]: 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, 302 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 414429.1ms, OverallIterations: 13, TraceHistogramMax: 5, EmptinessCheckTime: 225.5ms, AutomataDifference: 39203.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 9561.3ms, InitialAbstractionConstructionTime: 22.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2461 SDtfs, 5814 SDslu, 1052 SDs, 0 SdLazy, 16628 SolverSat, 2203 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 29728.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7000 GetRequests, 6917 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 9092.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=42335occurred in iteration=12, InterpolantAutomatonStates: 65, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 3247.6ms AutomataMinimizationTime, 13 MinimizatonAttempts, 30724 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 502 NumberOfFragments, 969 HoareAnnotationTreeSize, 3 FomulaSimplifications, 22471 FormulaSimplificationTreeSizeReduction, 3602.4ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 12408 FormulaSimplificationTreeSizeReductionInter, 5947.2ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 522.4ms SsaConstructionTime, 4442.2ms SatisfiabilityAnalysisTime, 262124.5ms InterpolantComputationTime, 3508 NumberOfCodeBlocks, 3508 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 6988 ConstructedInterpolants, 0 QuantifiedInterpolants, 131422 SizeOfPredicates, 58 NumberOfNonLiveVariables, 5202 ConjunctsInSsa, 130 ConjunctsInUnsatCore, 28 InterpolantComputations, 24 PerfectInterpolantSequences, 3495/3692 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: 1662]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 64]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((a5 == 1bv32 && !(1bv32 == a23)) && ((!(a5 == 1bv32) || !(1bv32 == a26)) || !(a6 == 1bv32))) && 1bv32 == a12) && !(a3 == 1bv32)) || (((a5 == 1bv32 && 0bv32 == a12) && 0bv32 == a11) && !(a3 == 1bv32))) || (((((1bv32 == a27 && a5 == 1bv32) && 0bv32 == a12) && 1bv32 == a18) && 0bv32 == a26) && !(a3 == 1bv32))) || (((((!(1bv32 == a27) || 1bv32 == a26) && a5 == 1bv32) && !(1bv32 == a11)) && 0bv32 == a12) && !(a6 == 1bv32))) || (((a5 == 1bv32 && 1bv32 == a26) && 0bv32 == a11) && 1bv32 == a12)) || (((a5 == 1bv32 && !(1bv32 == a23)) && 0bv32 == a12) && 0bv32 == a11)) || (((1bv32 == a27 && a5 == 1bv32) && 1bv32 == a26) && a3 == 0bv32)) || ((((1bv32 == a27 && a5 == 1bv32) && 0bv32 == a12) && a3 == 0bv32) && 0bv32 == a26)) || (((1bv32 == a27 && a5 == 1bv32) && 0bv32 == a12) && 1bv32 == a26)) || ((((1bv32 == a27 && (!(1bv32 == a27) || 1bv32 == a26)) && a5 == 1bv32) && !(1bv32 == a11)) && 1bv32 == a12)) || ((((a5 == 1bv32 && 0bv32 == a12) && 1bv32 == a26) && 1bv32 == a18) && !(a3 == 1bv32))) || (((((a5 == 1bv32 && 1bv32 == a15) && 0bv32 == a12) && 1bv32 == a26) && 1bv32 == a18) && 0bv32 == a27)) || (((a5 == 1bv32 && 0bv32 == a26) && 1bv32 == a12) && !(a3 == 1bv32))) || ((((1bv32 == a27 && a5 == 1bv32) && 1bv32 == a26) && 1bv32 == a12) && !(a3 == 1bv32))) || ((((1bv32 == a27 && a5 == 1bv32) && 1bv32 == a15) && 1bv32 == a26) && 1bv32 == a12)) || ((((((1bv32 == a27 && a5 == 1bv32) && 1bv32 == a15) && 0bv32 == a12) && !(a6 == 1bv32)) && 1bv32 == a18) && 0bv32 == a26)) || (((((!(1bv32 == a27) || 1bv32 == a26) && a5 == 1bv32) && !(1bv32 == a11)) && 0bv32 == a12) && !(a3 == 1bv32))) || (((((1bv32 == a27 && a5 == 1bv32) && !(1bv32 == a11)) && ((!(a5 == 1bv32) || !(1bv32 == a26)) || !(a6 == 1bv32))) && 1bv32 == a26) && !(a3 == 1bv32))) || ((((1bv32 == a27 && a5 == 1bv32) && !(1bv32 == a23)) && !(1bv32 == a11)) && 0bv32 == a12)) || ((((1bv32 == a27 && a5 == 1bv32) && !(1bv32 == a11)) && 0bv32 == a12) && 0bv32 == a26)) || ((((((!(1bv32 == a27) || 1bv32 == a26) && a5 == 1bv32) && 0bv32 == a12) && !(a6 == 1bv32)) && 1bv32 == a18) && !(a3 == 1bv32))) || ((((!(1bv32 == a27) || 1bv32 == a26) && a5 == 1bv32) && ((!(a5 == 1bv32) || !(1bv32 == a26)) || !(a6 == 1bv32))) && 1bv32 == a12)) || (((a5 == 1bv32 && !(1bv32 == a11)) && 0bv32 == a12) && 1bv32 == a26)) || (((a5 == 1bv32 && 1bv32 == a26) && a3 == 0bv32) && 1bv32 == a12)) || (((a5 == 1bv32 && 0bv32 == a12) && 1bv32 == a26) && a3 == 0bv32)) || ((((a5 == 1bv32 && !(1bv32 == a23)) && 0bv32 == a12) && !(a6 == 1bv32)) && 1bv32 == a18) - InvariantResult [Line: 1668]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((a5 == 1bv32 && !(1bv32 == a23)) && ((!(a5 == 1bv32) || !(1bv32 == a26)) || !(a6 == 1bv32))) && 1bv32 == a12) && !(a3 == 1bv32)) || (((a5 == 1bv32 && 0bv32 == a12) && 0bv32 == a11) && !(a3 == 1bv32))) || (((((1bv32 == a27 && a5 == 1bv32) && 0bv32 == a12) && 1bv32 == a18) && 0bv32 == a26) && !(a3 == 1bv32))) || (((((!(1bv32 == a27) || 1bv32 == a26) && a5 == 1bv32) && !(1bv32 == a11)) && 0bv32 == a12) && !(a6 == 1bv32))) || (((a5 == 1bv32 && 1bv32 == a26) && 0bv32 == a11) && 1bv32 == a12)) || (((a5 == 1bv32 && !(1bv32 == a23)) && 0bv32 == a12) && 0bv32 == a11)) || (((1bv32 == a27 && a5 == 1bv32) && 1bv32 == a26) && a3 == 0bv32)) || ((((1bv32 == a27 && a5 == 1bv32) && 0bv32 == a12) && a3 == 0bv32) && 0bv32 == a26)) || (((1bv32 == a27 && a5 == 1bv32) && 0bv32 == a12) && 1bv32 == a26)) || ((((1bv32 == a27 && (!(1bv32 == a27) || 1bv32 == a26)) && a5 == 1bv32) && !(1bv32 == a11)) && 1bv32 == a12)) || ((((a5 == 1bv32 && 0bv32 == a12) && 1bv32 == a26) && 1bv32 == a18) && !(a3 == 1bv32))) || (((((a5 == 1bv32 && 1bv32 == a15) && 0bv32 == a12) && 1bv32 == a26) && 1bv32 == a18) && 0bv32 == a27)) || (((a5 == 1bv32 && 0bv32 == a26) && 1bv32 == a12) && !(a3 == 1bv32))) || ((((1bv32 == a27 && a5 == 1bv32) && 1bv32 == a26) && 1bv32 == a12) && !(a3 == 1bv32))) || ((((1bv32 == a27 && a5 == 1bv32) && 1bv32 == a15) && 1bv32 == a26) && 1bv32 == a12)) || ((((((1bv32 == a27 && a5 == 1bv32) && 1bv32 == a15) && 0bv32 == a12) && !(a6 == 1bv32)) && 1bv32 == a18) && 0bv32 == a26)) || (((((!(1bv32 == a27) || 1bv32 == a26) && a5 == 1bv32) && !(1bv32 == a11)) && 0bv32 == a12) && !(a3 == 1bv32))) || (((((1bv32 == a27 && a5 == 1bv32) && !(1bv32 == a11)) && ((!(a5 == 1bv32) || !(1bv32 == a26)) || !(a6 == 1bv32))) && 1bv32 == a26) && !(a3 == 1bv32))) || ((((1bv32 == a27 && a5 == 1bv32) && !(1bv32 == a23)) && !(1bv32 == a11)) && 0bv32 == a12)) || ((((1bv32 == a27 && a5 == 1bv32) && !(1bv32 == a11)) && 0bv32 == a12) && 0bv32 == a26)) || ((((((!(1bv32 == a27) || 1bv32 == a26) && a5 == 1bv32) && 0bv32 == a12) && !(a6 == 1bv32)) && 1bv32 == a18) && !(a3 == 1bv32))) || ((((!(1bv32 == a27) || 1bv32 == a26) && a5 == 1bv32) && ((!(a5 == 1bv32) || !(1bv32 == a26)) || !(a6 == 1bv32))) && 1bv32 == a12)) || (((a5 == 1bv32 && !(1bv32 == a11)) && 0bv32 == a12) && 1bv32 == a26)) || (((a5 == 1bv32 && 1bv32 == a26) && a3 == 0bv32) && 1bv32 == a12)) || (((a5 == 1bv32 && 0bv32 == a12) && 1bv32 == a26) && a3 == 0bv32)) || ((((a5 == 1bv32 && !(1bv32 == a23)) && 0bv32 == a12) && !(a6 == 1bv32)) && 1bv32 == a18) RESULT: Ultimate proved your program to be correct! [2021-10-16 02:45:14,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5834f4af-4359-4496-a8cf-495b3f64d4ae/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...