./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/transmitter.12.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3cc02a8-99cb-44f0-b995-81275bfc80c4/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3cc02a8-99cb-44f0-b995-81275bfc80c4/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3cc02a8-99cb-44f0-b995-81275bfc80c4/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3cc02a8-99cb-44f0-b995-81275bfc80c4/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/transmitter.12.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3cc02a8-99cb-44f0-b995-81275bfc80c4/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3cc02a8-99cb-44f0-b995-81275bfc80c4/bin/utaipan-vmNK8stdcF --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 062c7418109a213aa13d25a99437d8241cca4f6492c123259890838dc94aff90 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:53:38,461 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:53:38,464 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:53:38,517 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:53:38,518 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:53:38,522 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:53:38,524 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:53:38,527 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:53:38,530 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:53:38,536 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:53:38,537 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:53:38,539 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:53:38,539 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:53:38,542 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:53:38,544 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:53:38,552 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:53:38,554 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:53:38,555 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:53:38,557 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:53:38,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:53:38,566 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:53:38,568 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:53:38,571 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:53:38,572 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:53:38,581 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:53:38,581 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:53:38,581 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:53:38,583 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:53:38,584 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:53:38,586 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:53:38,586 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:53:38,587 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:53:38,589 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:53:38,590 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:53:38,592 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:53:38,592 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:53:38,593 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:53:38,593 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:53:38,593 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:53:38,594 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:53:38,595 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:53:38,596 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3cc02a8-99cb-44f0-b995-81275bfc80c4/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 22:53:38,637 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:53:38,637 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:53:38,639 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:53:38,639 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:53:38,639 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:53:38,640 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:53:38,640 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:53:38,640 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:53:38,647 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:53:38,647 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:53:38,648 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:53:38,648 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:53:38,649 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:53:38,649 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:53:38,649 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:53:38,649 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:53:38,650 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:53:38,650 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:53:38,651 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:53:38,651 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:53:38,651 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:53:38,651 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:53:38,652 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:53:38,652 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:53:38,652 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:53:38,652 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:53:38,652 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:53:38,653 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:53:38,653 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:53:38,655 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:53:38,655 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:53:38,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:53:38,656 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:53:38,656 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:53:38,656 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:53:38,656 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:53:38,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:53:38,657 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:53:38,657 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:53:38,657 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:53:38,657 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_a3cc02a8-99cb-44f0-b995-81275bfc80c4/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3cc02a8-99cb-44f0-b995-81275bfc80c4/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 062c7418109a213aa13d25a99437d8241cca4f6492c123259890838dc94aff90 [2021-11-12 22:53:38,933 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:53:39,005 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:53:39,008 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:53:39,009 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:53:39,010 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:53:39,011 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3cc02a8-99cb-44f0-b995-81275bfc80c4/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/systemc/transmitter.12.cil.c [2021-11-12 22:53:39,082 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3cc02a8-99cb-44f0-b995-81275bfc80c4/bin/utaipan-vmNK8stdcF/data/329f7c945/9db9791e802d41368d54b4fb84e375d0/FLAG9cce30e4a [2021-11-12 22:53:39,684 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:53:39,685 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3cc02a8-99cb-44f0-b995-81275bfc80c4/sv-benchmarks/c/systemc/transmitter.12.cil.c [2021-11-12 22:53:39,711 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3cc02a8-99cb-44f0-b995-81275bfc80c4/bin/utaipan-vmNK8stdcF/data/329f7c945/9db9791e802d41368d54b4fb84e375d0/FLAG9cce30e4a [2021-11-12 22:53:39,976 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3cc02a8-99cb-44f0-b995-81275bfc80c4/bin/utaipan-vmNK8stdcF/data/329f7c945/9db9791e802d41368d54b4fb84e375d0 [2021-11-12 22:53:39,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:53:39,980 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:53:39,984 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:53:39,985 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:53:39,988 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:53:39,989 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:53:39" (1/1) ... [2021-11-12 22:53:39,990 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76935fbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:39, skipping insertion in model container [2021-11-12 22:53:39,990 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:53:39" (1/1) ... [2021-11-12 22:53:39,998 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:53:40,065 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:53:40,250 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_a3cc02a8-99cb-44f0-b995-81275bfc80c4/sv-benchmarks/c/systemc/transmitter.12.cil.c[706,719] [2021-11-12 22:53:40,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:53:40,423 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:53:40,432 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_a3cc02a8-99cb-44f0-b995-81275bfc80c4/sv-benchmarks/c/systemc/transmitter.12.cil.c[706,719] [2021-11-12 22:53:40,503 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:53:40,525 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:53:40,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:40 WrapperNode [2021-11-12 22:53:40,526 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:53:40,527 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:53:40,527 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:53:40,527 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:53:40,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:40" (1/1) ... [2021-11-12 22:53:40,566 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:40" (1/1) ... [2021-11-12 22:53:40,618 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:53:40,619 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:53:40,619 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:53:40,619 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:53:40,630 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:40" (1/1) ... [2021-11-12 22:53:40,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:40" (1/1) ... [2021-11-12 22:53:40,635 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:40" (1/1) ... [2021-11-12 22:53:40,635 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:40" (1/1) ... [2021-11-12 22:53:40,656 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:40" (1/1) ... [2021-11-12 22:53:40,686 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:40" (1/1) ... [2021-11-12 22:53:40,689 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:40" (1/1) ... [2021-11-12 22:53:40,695 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:53:40,696 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:53:40,696 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:53:40,696 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:53:40,697 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:40" (1/1) ... [2021-11-12 22:53:40,704 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:53:40,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3cc02a8-99cb-44f0-b995-81275bfc80c4/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:53:40,729 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3cc02a8-99cb-44f0-b995-81275bfc80c4/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:53:40,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3cc02a8-99cb-44f0-b995-81275bfc80c4/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:53:40,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:53:40,779 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-11-12 22:53:40,779 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-11-12 22:53:40,779 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-11-12 22:53:40,779 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-11-12 22:53:40,780 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-11-12 22:53:40,780 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-11-12 22:53:40,780 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-11-12 22:53:40,780 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-11-12 22:53:40,780 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-11-12 22:53:40,780 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-11-12 22:53:40,780 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-11-12 22:53:40,781 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-11-12 22:53:40,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-12 22:53:40,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:53:40,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:53:42,249 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:53:42,249 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-11-12 22:53:42,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:53:42 BoogieIcfgContainer [2021-11-12 22:53:42,252 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:53:42,254 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:53:42,254 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:53:42,257 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:53:42,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:53:39" (1/3) ... [2021-11-12 22:53:42,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44c6cb34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:53:42, skipping insertion in model container [2021-11-12 22:53:42,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:40" (2/3) ... [2021-11-12 22:53:42,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44c6cb34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:53:42, skipping insertion in model container [2021-11-12 22:53:42,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:53:42" (3/3) ... [2021-11-12 22:53:42,260 INFO L111 eAbstractionObserver]: Analyzing ICFG transmitter.12.cil.c [2021-11-12 22:53:42,265 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:53:42,265 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 22:53:42,315 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:53:42,321 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 22:53:42,321 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 22:53:42,343 INFO L276 IsEmpty]: Start isEmpty. Operand has 186 states, 153 states have (on average 1.5620915032679739) internal successors, (239), 155 states have internal predecessors, (239), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-12 22:53:42,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-12 22:53:42,355 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:53:42,356 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:53:42,357 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:53:42,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:53:42,362 INFO L85 PathProgramCache]: Analyzing trace with hash 2024217964, now seen corresponding path program 1 times [2021-11-12 22:53:42,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:53:42,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638059713] [2021-11-12 22:53:42,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:53:42,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:53:42,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:53:42,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:53:42,919 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:53:42,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638059713] [2021-11-12 22:53:42,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638059713] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:53:42,920 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:53:42,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-12 22:53:42,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620988638] [2021-11-12 22:53:42,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:53:42,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:53:42,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:53:42,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:53:42,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:53:42,958 INFO L87 Difference]: Start difference. First operand has 186 states, 153 states have (on average 1.5620915032679739) internal successors, (239), 155 states have internal predecessors, (239), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-12 22:53:43,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:53:43,567 INFO L93 Difference]: Finished difference Result 545 states and 862 transitions. [2021-11-12 22:53:43,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:53:43,571 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 77 [2021-11-12 22:53:43,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:53:43,593 INFO L225 Difference]: With dead ends: 545 [2021-11-12 22:53:43,593 INFO L226 Difference]: Without dead ends: 360 [2021-11-12 22:53:43,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:53:43,603 INFO L933 BasicCegarLoop]: 447 mSDtfsCounter, 507 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 334.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.34ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 453.50ms IncrementalHoareTripleChecker+Time [2021-11-12 22:53:43,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [507 Valid, 802 Invalid, 315 Unknown, 0 Unchecked, 21.34ms Time], IncrementalHoareTripleChecker [13 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 453.50ms Time] [2021-11-12 22:53:43,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2021-11-12 22:53:43,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 356. [2021-11-12 22:53:43,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 297 states have (on average 1.5252525252525253) internal successors, (453), 299 states have internal predecessors, (453), 46 states have call successors, (46), 12 states have call predecessors, (46), 12 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2021-11-12 22:53:43,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 545 transitions. [2021-11-12 22:53:43,683 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 545 transitions. Word has length 77 [2021-11-12 22:53:43,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:53:43,684 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 545 transitions. [2021-11-12 22:53:43,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-12 22:53:43,684 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 545 transitions. [2021-11-12 22:53:43,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-12 22:53:43,688 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:53:43,688 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:53:43,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-12 22:53:43,689 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:53:43,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:53:43,690 INFO L85 PathProgramCache]: Analyzing trace with hash -133255059, now seen corresponding path program 1 times [2021-11-12 22:53:43,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:53:43,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071872026] [2021-11-12 22:53:43,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:53:43,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:53:43,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:53:43,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:53:43,921 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:53:43,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071872026] [2021-11-12 22:53:43,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071872026] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:53:43,922 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:53:43,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-12 22:53:43,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642535569] [2021-11-12 22:53:43,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:53:43,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:53:43,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:53:43,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:53:43,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:53:43,925 INFO L87 Difference]: Start difference. First operand 356 states and 545 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-12 22:53:44,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:53:44,775 INFO L93 Difference]: Finished difference Result 2077 states and 3363 transitions. [2021-11-12 22:53:44,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:53:44,776 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 77 [2021-11-12 22:53:44,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:53:44,795 INFO L225 Difference]: With dead ends: 2077 [2021-11-12 22:53:44,795 INFO L226 Difference]: Without dead ends: 1726 [2021-11-12 22:53:44,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:53:44,801 INFO L933 BasicCegarLoop]: 612 mSDtfsCounter, 1199 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 597.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1226 SdHoareTripleChecker+Valid, 1295 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.03ms SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 706.62ms IncrementalHoareTripleChecker+Time [2021-11-12 22:53:44,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1226 Valid, 1295 Invalid, 807 Unknown, 0 Unchecked, 14.03ms Time], IncrementalHoareTripleChecker [214 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 706.62ms Time] [2021-11-12 22:53:44,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2021-11-12 22:53:44,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1690. [2021-11-12 22:53:44,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1690 states, 1427 states have (on average 1.5227750525578136) internal successors, (2173), 1435 states have internal predecessors, (2173), 202 states have call successors, (202), 60 states have call predecessors, (202), 60 states have return successors, (316), 195 states have call predecessors, (316), 202 states have call successors, (316) [2021-11-12 22:53:44,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 2691 transitions. [2021-11-12 22:53:44,938 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 2691 transitions. Word has length 77 [2021-11-12 22:53:44,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:53:44,938 INFO L470 AbstractCegarLoop]: Abstraction has 1690 states and 2691 transitions. [2021-11-12 22:53:44,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-12 22:53:44,939 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 2691 transitions. [2021-11-12 22:53:44,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-12 22:53:44,944 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:53:44,944 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:53:44,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-12 22:53:44,944 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:53:44,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:53:44,945 INFO L85 PathProgramCache]: Analyzing trace with hash 895277102, now seen corresponding path program 1 times [2021-11-12 22:53:44,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:53:44,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721968644] [2021-11-12 22:53:44,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:53:44,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:53:44,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:53:45,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:53:45,042 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:53:45,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721968644] [2021-11-12 22:53:45,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721968644] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:53:45,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:53:45,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-12 22:53:45,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922704893] [2021-11-12 22:53:45,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:53:45,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:53:45,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:53:45,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:53:45,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:53:45,045 INFO L87 Difference]: Start difference. First operand 1690 states and 2691 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-12 22:53:46,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:53:46,012 INFO L93 Difference]: Finished difference Result 6683 states and 10977 transitions. [2021-11-12 22:53:46,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:53:46,013 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 77 [2021-11-12 22:53:46,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:53:46,059 INFO L225 Difference]: With dead ends: 6683 [2021-11-12 22:53:46,059 INFO L226 Difference]: Without dead ends: 4998 [2021-11-12 22:53:46,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:53:46,073 INFO L933 BasicCegarLoop]: 649 mSDtfsCounter, 1203 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 556.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1209 SdHoareTripleChecker+Valid, 1319 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.17ms SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 659.96ms IncrementalHoareTripleChecker+Time [2021-11-12 22:53:46,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1209 Valid, 1319 Invalid, 826 Unknown, 0 Unchecked, 12.17ms Time], IncrementalHoareTripleChecker [215 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 659.96ms Time] [2021-11-12 22:53:46,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4998 states. [2021-11-12 22:53:46,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4998 to 4704. [2021-11-12 22:53:46,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4704 states, 4075 states have (on average 1.5334969325153374) internal successors, (6249), 4017 states have internal predecessors, (6249), 464 states have call successors, (464), 148 states have call predecessors, (464), 164 states have return successors, (958), 539 states have call predecessors, (958), 464 states have call successors, (958) [2021-11-12 22:53:46,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4704 states to 4704 states and 7671 transitions. [2021-11-12 22:53:46,428 INFO L78 Accepts]: Start accepts. Automaton has 4704 states and 7671 transitions. Word has length 77 [2021-11-12 22:53:46,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:53:46,428 INFO L470 AbstractCegarLoop]: Abstraction has 4704 states and 7671 transitions. [2021-11-12 22:53:46,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-12 22:53:46,428 INFO L276 IsEmpty]: Start isEmpty. Operand 4704 states and 7671 transitions. [2021-11-12 22:53:46,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-12 22:53:46,462 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:53:46,463 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:53:46,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-12 22:53:46,463 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:53:46,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:53:46,464 INFO L85 PathProgramCache]: Analyzing trace with hash -246370291, now seen corresponding path program 1 times [2021-11-12 22:53:46,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:53:46,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957644497] [2021-11-12 22:53:46,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:53:46,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:53:46,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:53:46,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:53:46,611 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:53:46,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957644497] [2021-11-12 22:53:46,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957644497] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:53:46,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:53:46,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-12 22:53:46,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235612183] [2021-11-12 22:53:46,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:53:46,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:53:46,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:53:46,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:53:46,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:53:46,617 INFO L87 Difference]: Start difference. First operand 4704 states and 7671 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-12 22:53:47,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:53:47,914 INFO L93 Difference]: Finished difference Result 17415 states and 29463 transitions. [2021-11-12 22:53:47,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:53:47,915 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 77 [2021-11-12 22:53:47,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:53:48,087 INFO L225 Difference]: With dead ends: 17415 [2021-11-12 22:53:48,087 INFO L226 Difference]: Without dead ends: 12716 [2021-11-12 22:53:48,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:53:48,125 INFO L933 BasicCegarLoop]: 636 mSDtfsCounter, 1198 mSDsluCounter, 823 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 545.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1216 SdHoareTripleChecker+Valid, 1305 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.66ms SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 664.57ms IncrementalHoareTripleChecker+Time [2021-11-12 22:53:48,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1216 Valid, 1305 Invalid, 814 Unknown, 0 Unchecked, 13.66ms Time], IncrementalHoareTripleChecker [215 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 664.57ms Time] [2021-11-12 22:53:48,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12716 states. [2021-11-12 22:53:48,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12716 to 12048. [2021-11-12 22:53:48,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12048 states, 10597 states have (on average 1.543172596017741) internal successors, (16353), 10317 states have internal predecessors, (16353), 1030 states have call successors, (1030), 348 states have call predecessors, (1030), 420 states have return successors, (2738), 1383 states have call predecessors, (2738), 1030 states have call successors, (2738) [2021-11-12 22:53:49,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12048 states to 12048 states and 20121 transitions. [2021-11-12 22:53:49,023 INFO L78 Accepts]: Start accepts. Automaton has 12048 states and 20121 transitions. Word has length 77 [2021-11-12 22:53:49,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:53:49,024 INFO L470 AbstractCegarLoop]: Abstraction has 12048 states and 20121 transitions. [2021-11-12 22:53:49,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-12 22:53:49,025 INFO L276 IsEmpty]: Start isEmpty. Operand 12048 states and 20121 transitions. [2021-11-12 22:53:49,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-12 22:53:49,029 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:53:49,030 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:53:49,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-12 22:53:49,031 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:53:49,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:53:49,033 INFO L85 PathProgramCache]: Analyzing trace with hash -947938516, now seen corresponding path program 1 times [2021-11-12 22:53:49,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:53:49,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322821275] [2021-11-12 22:53:49,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:53:49,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:53:49,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:53:49,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:53:49,143 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:53:49,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322821275] [2021-11-12 22:53:49,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322821275] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:53:49,145 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:53:49,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-12 22:53:49,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129661516] [2021-11-12 22:53:49,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:53:49,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:53:49,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:53:49,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:53:49,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:53:49,147 INFO L87 Difference]: Start difference. First operand 12048 states and 20121 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-12 22:53:51,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:53:51,206 INFO L93 Difference]: Finished difference Result 43847 states and 76605 transitions. [2021-11-12 22:53:51,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:53:51,207 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 77 [2021-11-12 22:53:51,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:53:51,555 INFO L225 Difference]: With dead ends: 43847 [2021-11-12 22:53:51,555 INFO L226 Difference]: Without dead ends: 31804 [2021-11-12 22:53:51,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:53:51,625 INFO L933 BasicCegarLoop]: 634 mSDtfsCounter, 1193 mSDsluCounter, 822 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 709.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1212 SdHoareTripleChecker+Valid, 1302 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.23ms SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 817.39ms IncrementalHoareTripleChecker+Time [2021-11-12 22:53:51,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1212 Valid, 1302 Invalid, 813 Unknown, 0 Unchecked, 12.23ms Time], IncrementalHoareTripleChecker [215 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 817.39ms Time] [2021-11-12 22:53:51,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31804 states. [2021-11-12 22:53:53,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31804 to 30384. [2021-11-12 22:53:53,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30384 states, 27015 states have (on average 1.5541365907828983) internal successors, (41985), 26037 states have internal predecessors, (41985), 2292 states have call successors, (2292), 820 states have call predecessors, (2292), 1076 states have return successors, (7766), 3527 states have call predecessors, (7766), 2292 states have call successors, (7766) [2021-11-12 22:53:53,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30384 states to 30384 states and 52043 transitions. [2021-11-12 22:53:53,745 INFO L78 Accepts]: Start accepts. Automaton has 30384 states and 52043 transitions. Word has length 77 [2021-11-12 22:53:53,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:53:53,745 INFO L470 AbstractCegarLoop]: Abstraction has 30384 states and 52043 transitions. [2021-11-12 22:53:53,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-12 22:53:53,746 INFO L276 IsEmpty]: Start isEmpty. Operand 30384 states and 52043 transitions. [2021-11-12 22:53:53,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-12 22:53:53,748 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:53:53,749 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:53:53,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-12 22:53:53,749 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:53:53,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:53:53,750 INFO L85 PathProgramCache]: Analyzing trace with hash 2039024011, now seen corresponding path program 1 times [2021-11-12 22:53:53,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:53:53,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556050244] [2021-11-12 22:53:53,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:53:53,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:53:53,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:53:53,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:53:53,841 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:53:53,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556050244] [2021-11-12 22:53:53,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556050244] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:53:53,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:53:53,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-12 22:53:53,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61842804] [2021-11-12 22:53:53,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:53:53,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:53:53,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:53:53,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:53:53,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:53:53,843 INFO L87 Difference]: Start difference. First operand 30384 states and 52043 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-12 22:53:57,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:53:57,574 INFO L93 Difference]: Finished difference Result 110463 states and 199563 transitions. [2021-11-12 22:53:57,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:53:57,575 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 77 [2021-11-12 22:53:57,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:53:58,166 INFO L225 Difference]: With dead ends: 110463 [2021-11-12 22:53:58,166 INFO L226 Difference]: Without dead ends: 80084 [2021-11-12 22:53:58,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:53:58,421 INFO L933 BasicCegarLoop]: 632 mSDtfsCounter, 1188 mSDsluCounter, 821 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 692.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1208 SdHoareTripleChecker+Valid, 1299 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.01ms SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 843.49ms IncrementalHoareTripleChecker+Time [2021-11-12 22:53:58,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1208 Valid, 1299 Invalid, 812 Unknown, 0 Unchecked, 11.01ms Time], IncrementalHoareTripleChecker [215 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 843.49ms Time] [2021-11-12 22:53:58,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80084 states. [2021-11-12 22:54:02,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80084 to 77140. [2021-11-12 22:54:02,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77140 states, 69101 states have (on average 1.56699613609065) internal successors, (108281), 66029 states have internal predecessors, (108281), 5218 states have call successors, (5218), 1980 states have call predecessors, (5218), 2820 states have return successors, (22146), 9131 states have call predecessors, (22146), 5218 states have call successors, (22146) [2021-11-12 22:54:03,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77140 states to 77140 states and 135645 transitions. [2021-11-12 22:54:03,184 INFO L78 Accepts]: Start accepts. Automaton has 77140 states and 135645 transitions. Word has length 77 [2021-11-12 22:54:03,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:54:03,185 INFO L470 AbstractCegarLoop]: Abstraction has 77140 states and 135645 transitions. [2021-11-12 22:54:03,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-12 22:54:03,185 INFO L276 IsEmpty]: Start isEmpty. Operand 77140 states and 135645 transitions. [2021-11-12 22:54:03,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-12 22:54:03,194 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:54:03,194 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:54:03,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-12 22:54:03,194 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:54:03,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:54:03,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1855952086, now seen corresponding path program 1 times [2021-11-12 22:54:03,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:54:03,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120652904] [2021-11-12 22:54:03,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:54:03,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:54:03,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:54:03,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:54:03,285 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:54:03,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120652904] [2021-11-12 22:54:03,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120652904] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:54:03,287 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:54:03,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-12 22:54:03,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857230483] [2021-11-12 22:54:03,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:54:03,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:54:03,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:54:03,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:54:03,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:54:03,289 INFO L87 Difference]: Start difference. First operand 77140 states and 135645 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-12 22:54:08,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:54:08,225 INFO L93 Difference]: Finished difference Result 229999 states and 421184 transitions. [2021-11-12 22:54:08,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:54:08,229 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 77 [2021-11-12 22:54:08,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:54:09,008 INFO L225 Difference]: With dead ends: 229999 [2021-11-12 22:54:09,008 INFO L226 Difference]: Without dead ends: 152864 [2021-11-12 22:54:09,430 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:54:09,431 INFO L933 BasicCegarLoop]: 445 mSDtfsCounter, 534 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 248.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.27ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 344.45ms IncrementalHoareTripleChecker+Time [2021-11-12 22:54:09,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [534 Valid, 800 Invalid, 297 Unknown, 0 Unchecked, 11.27ms Time], IncrementalHoareTripleChecker [5 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 344.45ms Time] [2021-11-12 22:54:09,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152864 states. [2021-11-12 22:54:16,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152864 to 152252. [2021-11-12 22:54:16,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152252 states, 136369 states have (on average 1.5567247688257595) internal successors, (212289), 130644 states have internal predecessors, (212289), 10242 states have call successors, (10242), 3960 states have call predecessors, (10242), 5640 states have return successors, (42770), 17648 states have call predecessors, (42770), 10242 states have call successors, (42770) [2021-11-12 22:54:17,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152252 states to 152252 states and 265301 transitions. [2021-11-12 22:54:17,486 INFO L78 Accepts]: Start accepts. Automaton has 152252 states and 265301 transitions. Word has length 77 [2021-11-12 22:54:17,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:54:17,486 INFO L470 AbstractCegarLoop]: Abstraction has 152252 states and 265301 transitions. [2021-11-12 22:54:17,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-12 22:54:17,487 INFO L276 IsEmpty]: Start isEmpty. Operand 152252 states and 265301 transitions. [2021-11-12 22:54:17,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-12 22:54:17,490 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:54:17,490 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:54:17,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-12 22:54:17,490 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:54:17,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:54:17,491 INFO L85 PathProgramCache]: Analyzing trace with hash 810364937, now seen corresponding path program 1 times [2021-11-12 22:54:17,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:54:17,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306666259] [2021-11-12 22:54:17,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:54:17,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:54:17,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:54:17,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:54:17,557 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:54:17,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306666259] [2021-11-12 22:54:17,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306666259] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:54:17,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:54:17,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-12 22:54:17,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575029302] [2021-11-12 22:54:17,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:54:17,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:54:17,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:54:17,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:54:17,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:54:17,560 INFO L87 Difference]: Start difference. First operand 152252 states and 265301 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-12 22:54:30,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:54:30,590 INFO L93 Difference]: Finished difference Result 554209 states and 1030374 transitions. [2021-11-12 22:54:30,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:54:30,590 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 77 [2021-11-12 22:54:30,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:54:33,456 INFO L225 Difference]: With dead ends: 554209 [2021-11-12 22:54:33,456 INFO L226 Difference]: Without dead ends: 401962 [2021-11-12 22:54:33,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:54:33,908 INFO L933 BasicCegarLoop]: 646 mSDtfsCounter, 1184 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 579.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1195 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.66ms SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 700.04ms IncrementalHoareTripleChecker+Time [2021-11-12 22:54:33,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1195 Valid, 1309 Invalid, 836 Unknown, 0 Unchecked, 9.66ms Time], IncrementalHoareTripleChecker [220 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 700.04ms Time] [2021-11-12 22:54:34,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401962 states.