./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW --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 89950477a2818e2be847e3014c0e2f9e906834037b4e328723302699ed4d9564 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 14:44:43,578 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:44:43,582 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:44:43,630 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:44:43,631 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:44:43,632 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:44:43,634 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:44:43,636 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:44:43,642 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:44:43,650 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:44:43,652 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:44:43,656 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:44:43,657 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:44:43,660 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:44:43,663 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:44:43,669 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:44:43,671 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:44:43,672 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:44:43,675 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:44:43,683 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:44:43,685 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:44:43,688 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:44:43,691 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:44:43,693 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:44:43,698 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:44:43,698 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:44:43,699 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:44:43,700 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:44:43,700 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:44:43,702 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:44:43,703 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:44:43,704 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:44:43,706 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:44:43,708 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:44:43,710 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:44:43,711 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:44:43,712 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:44:43,712 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:44:43,712 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:44:43,715 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:44:43,716 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:44:43,717 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 14:44:43,765 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:44:43,765 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:44:43,766 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:44:43,766 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:44:43,767 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:44:43,768 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:44:43,768 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:44:43,768 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:44:43,769 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:44:43,769 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:44:43,770 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:44:43,771 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:44:43,771 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:44:43,771 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:44:43,772 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:44:43,772 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:44:43,772 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:44:43,772 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:44:43,773 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:44:43,774 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 14:44:43,774 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:44:43,774 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 14:44:43,775 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:44:43,775 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:44:43,775 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:44:43,775 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:44:43,776 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 14:44:43,777 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:44:43,777 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:44:43,777 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:44:43,778 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:44:43,778 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:44:43,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:44:43,779 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:44:43,779 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:44:43,780 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:44:43,780 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:44:43,780 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:44:43,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:44:43,781 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:44:43,781 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:44:43,781 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89950477a2818e2be847e3014c0e2f9e906834037b4e328723302699ed4d9564 [2022-11-23 14:44:44,086 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:44:44,130 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:44:44,133 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:44:44,135 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:44:44,135 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:44:44,137 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c [2022-11-23 14:44:47,659 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:44:48,175 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:44:48,179 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c [2022-11-23 14:44:48,211 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/data/9567587fc/25ec04e852d44bbf9d7b54e0ffda35b7/FLAGd5cac3ac8 [2022-11-23 14:44:48,237 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/data/9567587fc/25ec04e852d44bbf9d7b54e0ffda35b7 [2022-11-23 14:44:48,243 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:44:48,245 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:44:48,250 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:44:48,250 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:44:48,254 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:44:48,255 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:44:48" (1/1) ... [2022-11-23 14:44:48,257 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b5e522c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:48, skipping insertion in model container [2022-11-23 14:44:48,258 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:44:48" (1/1) ... [2022-11-23 14:44:48,269 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:44:48,356 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:44:48,943 WARN L237 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_10c2e74a-14c4-44fa-b54a-b42a3554f871/sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c[51490,51503] [2022-11-23 14:44:49,054 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:44:49,074 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:44:49,315 WARN L237 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_10c2e74a-14c4-44fa-b54a-b42a3554f871/sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c[51490,51503] [2022-11-23 14:44:49,369 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:44:49,420 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:44:49,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:49 WrapperNode [2022-11-23 14:44:49,421 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:44:49,422 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:44:49,423 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:44:49,423 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:44:49,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:49" (1/1) ... [2022-11-23 14:44:49,495 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:49" (1/1) ... [2022-11-23 14:44:49,581 INFO L138 Inliner]: procedures = 96, calls = 352, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 894 [2022-11-23 14:44:49,581 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:44:49,582 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:44:49,582 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:44:49,583 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:44:49,606 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:49" (1/1) ... [2022-11-23 14:44:49,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:49" (1/1) ... [2022-11-23 14:44:49,625 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:49" (1/1) ... [2022-11-23 14:44:49,633 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:49" (1/1) ... [2022-11-23 14:44:49,670 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:49" (1/1) ... [2022-11-23 14:44:49,702 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:49" (1/1) ... [2022-11-23 14:44:49,707 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:49" (1/1) ... [2022-11-23 14:44:49,712 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:49" (1/1) ... [2022-11-23 14:44:49,722 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:44:49,723 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:44:49,723 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:44:49,724 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:44:49,725 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:49" (1/1) ... [2022-11-23 14:44:49,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:44:49,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:44:49,780 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:44:49,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:44:49,840 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-11-23 14:44:49,840 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-11-23 14:44:49,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:44:49,841 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2022-11-23 14:44:49,841 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2022-11-23 14:44:49,841 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2022-11-23 14:44:49,841 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2022-11-23 14:44:49,842 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-11-23 14:44:49,842 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-11-23 14:44:49,843 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2022-11-23 14:44:49,843 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2022-11-23 14:44:49,843 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-23 14:44:49,843 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-23 14:44:49,843 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-11-23 14:44:49,844 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-11-23 14:44:49,844 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-23 14:44:49,844 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-23 14:44:49,844 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2022-11-23 14:44:49,845 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2022-11-23 14:44:49,845 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-23 14:44:49,850 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-23 14:44:49,850 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-23 14:44:49,851 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-23 14:44:49,851 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-23 14:44:49,852 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-23 14:44:49,852 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-23 14:44:49,853 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-23 14:44:49,853 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-23 14:44:49,853 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-23 14:44:49,854 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-23 14:44:49,854 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-23 14:44:49,854 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-23 14:44:49,854 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-23 14:44:49,854 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-11-23 14:44:49,855 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-11-23 14:44:49,855 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-23 14:44:49,855 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-23 14:44:49,856 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-23 14:44:49,856 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-23 14:44:49,856 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-23 14:44:49,856 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-23 14:44:49,857 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-23 14:44:49,857 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-23 14:44:49,857 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-23 14:44:49,858 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-23 14:44:49,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:44:49,859 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-11-23 14:44:49,859 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-11-23 14:44:49,859 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-23 14:44:49,859 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-23 14:44:49,860 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-23 14:44:49,860 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-23 14:44:49,860 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-23 14:44:49,861 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-23 14:44:49,861 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2022-11-23 14:44:49,861 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2022-11-23 14:44:49,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:44:49,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:44:49,862 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-23 14:44:49,862 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-23 14:44:49,862 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2022-11-23 14:44:49,863 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2022-11-23 14:44:50,112 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:44:50,115 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:44:51,637 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:44:52,726 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:44:52,726 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-23 14:44:52,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:44:52 BoogieIcfgContainer [2022-11-23 14:44:52,733 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:44:52,736 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:44:52,737 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:44:52,741 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:44:52,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:44:48" (1/3) ... [2022-11-23 14:44:52,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19b5f3eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:44:52, skipping insertion in model container [2022-11-23 14:44:52,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:49" (2/3) ... [2022-11-23 14:44:52,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19b5f3eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:44:52, skipping insertion in model container [2022-11-23 14:44:52,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:44:52" (3/3) ... [2022-11-23 14:44:52,748 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product24.cil.c [2022-11-23 14:44:52,772 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:44:52,772 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 14:44:52,878 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:44:52,891 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2e4995a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:44:52,892 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 14:44:52,903 INFO L276 IsEmpty]: Start isEmpty. Operand has 443 states, 302 states have (on average 1.576158940397351) internal successors, (476), 322 states have internal predecessors, (476), 110 states have call successors, (110), 29 states have call predecessors, (110), 29 states have return successors, (110), 106 states have call predecessors, (110), 110 states have call successors, (110) [2022-11-23 14:44:52,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-23 14:44:52,936 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:44:52,936 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-11-23 14:44:52,937 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:44:52,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:44:52,944 INFO L85 PathProgramCache]: Analyzing trace with hash -269389944, now seen corresponding path program 1 times [2022-11-23 14:44:52,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:44:52,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627267461] [2022-11-23 14:44:52,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:44:52,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:44:53,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:44:54,274 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 14:44:54,274 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:44:54,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627267461] [2022-11-23 14:44:54,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627267461] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:44:54,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:44:54,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:44:54,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20301129] [2022-11-23 14:44:54,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:44:54,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:44:54,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:44:54,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:44:54,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:44:54,333 INFO L87 Difference]: Start difference. First operand has 443 states, 302 states have (on average 1.576158940397351) internal successors, (476), 322 states have internal predecessors, (476), 110 states have call successors, (110), 29 states have call predecessors, (110), 29 states have return successors, (110), 106 states have call predecessors, (110), 110 states have call successors, (110) Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2022-11-23 14:44:59,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:44:59,068 INFO L93 Difference]: Finished difference Result 1834 states and 2976 transitions. [2022-11-23 14:44:59,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:44:59,073 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 70 [2022-11-23 14:44:59,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:44:59,113 INFO L225 Difference]: With dead ends: 1834 [2022-11-23 14:44:59,114 INFO L226 Difference]: Without dead ends: 1392 [2022-11-23 14:44:59,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-23 14:44:59,135 INFO L413 NwaCegarLoop]: 969 mSDtfsCounter, 2050 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 2398 mSolverCounterSat, 562 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2131 SdHoareTripleChecker+Valid, 1570 SdHoareTripleChecker+Invalid, 2960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 562 IncrementalHoareTripleChecker+Valid, 2398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:44:59,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2131 Valid, 1570 Invalid, 2960 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [562 Valid, 2398 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-23 14:44:59,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1392 states. [2022-11-23 14:44:59,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1392 to 1279. [2022-11-23 14:44:59,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1279 states, 916 states have (on average 1.5753275109170306) internal successors, (1443), 951 states have internal predecessors, (1443), 292 states have call successors, (292), 71 states have call predecessors, (292), 70 states have return successors, (310), 271 states have call predecessors, (310), 288 states have call successors, (310) [2022-11-23 14:44:59,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1279 states to 1279 states and 2045 transitions. [2022-11-23 14:44:59,414 INFO L78 Accepts]: Start accepts. Automaton has 1279 states and 2045 transitions. Word has length 70 [2022-11-23 14:44:59,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:44:59,416 INFO L495 AbstractCegarLoop]: Abstraction has 1279 states and 2045 transitions. [2022-11-23 14:44:59,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2022-11-23 14:44:59,418 INFO L276 IsEmpty]: Start isEmpty. Operand 1279 states and 2045 transitions. [2022-11-23 14:44:59,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-23 14:44:59,432 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:44:59,432 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 14:44:59,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:44:59,433 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:44:59,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:44:59,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1775734748, now seen corresponding path program 1 times [2022-11-23 14:44:59,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:44:59,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693852749] [2022-11-23 14:44:59,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:44:59,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:44:59,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:45:00,022 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 14:45:00,023 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:45:00,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693852749] [2022-11-23 14:45:00,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693852749] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:45:00,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:45:00,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:45:00,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842065635] [2022-11-23 14:45:00,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:45:00,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:45:00,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:45:00,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:45:00,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:45:00,029 INFO L87 Difference]: Start difference. First operand 1279 states and 2045 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 3 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-23 14:45:00,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:45:00,438 INFO L93 Difference]: Finished difference Result 3187 states and 5085 transitions. [2022-11-23 14:45:00,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:45:00,439 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 3 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 101 [2022-11-23 14:45:00,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:45:00,460 INFO L225 Difference]: With dead ends: 3187 [2022-11-23 14:45:00,460 INFO L226 Difference]: Without dead ends: 1923 [2022-11-23 14:45:00,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:45:00,482 INFO L413 NwaCegarLoop]: 823 mSDtfsCounter, 520 mSDsluCounter, 1229 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 2052 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:45:00,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [526 Valid, 2052 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:45:00,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1923 states. [2022-11-23 14:45:00,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1923 to 1903. [2022-11-23 14:45:00,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1903 states, 1363 states have (on average 1.5414526779163609) internal successors, (2101), 1399 states have internal predecessors, (2101), 426 states have call successors, (426), 109 states have call predecessors, (426), 113 states have return successors, (487), 407 states have call predecessors, (487), 420 states have call successors, (487) [2022-11-23 14:45:00,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1903 states to 1903 states and 3014 transitions. [2022-11-23 14:45:00,648 INFO L78 Accepts]: Start accepts. Automaton has 1903 states and 3014 transitions. Word has length 101 [2022-11-23 14:45:00,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:45:00,649 INFO L495 AbstractCegarLoop]: Abstraction has 1903 states and 3014 transitions. [2022-11-23 14:45:00,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 3 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-23 14:45:00,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1903 states and 3014 transitions. [2022-11-23 14:45:00,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-23 14:45:00,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:45:00,657 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 14:45:00,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 14:45:00,658 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:45:00,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:45:00,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1010596704, now seen corresponding path program 1 times [2022-11-23 14:45:00,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:45:00,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955748002] [2022-11-23 14:45:00,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:45:00,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:45:00,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:45:01,270 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 14:45:01,270 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:45:01,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955748002] [2022-11-23 14:45:01,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955748002] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:45:01,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:45:01,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 14:45:01,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232029093] [2022-11-23 14:45:01,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:45:01,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 14:45:01,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:45:01,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 14:45:01,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:45:01,276 INFO L87 Difference]: Start difference. First operand 1903 states and 3014 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2022-11-23 14:45:05,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:45:05,379 INFO L93 Difference]: Finished difference Result 5618 states and 8973 transitions. [2022-11-23 14:45:05,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 14:45:05,380 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 102 [2022-11-23 14:45:05,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:45:05,420 INFO L225 Difference]: With dead ends: 5618 [2022-11-23 14:45:05,420 INFO L226 Difference]: Without dead ends: 3732 [2022-11-23 14:45:05,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-23 14:45:05,443 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 1334 mSDsluCounter, 1198 mSDsCounter, 0 mSdLazyCounter, 3468 mSolverCounterSat, 487 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1437 SdHoareTripleChecker+Valid, 1580 SdHoareTripleChecker+Invalid, 3955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 487 IncrementalHoareTripleChecker+Valid, 3468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:45:05,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1437 Valid, 1580 Invalid, 3955 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [487 Valid, 3468 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-23 14:45:05,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3732 states. [2022-11-23 14:45:05,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3732 to 3284. [2022-11-23 14:45:05,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3284 states, 2356 states have (on average 1.5509337860780985) internal successors, (3654), 2422 states have internal predecessors, (3654), 726 states have call successors, (726), 190 states have call predecessors, (726), 201 states have return successors, (838), 695 states have call predecessors, (838), 718 states have call successors, (838) [2022-11-23 14:45:05,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3284 states to 3284 states and 5218 transitions. [2022-11-23 14:45:05,737 INFO L78 Accepts]: Start accepts. Automaton has 3284 states and 5218 transitions. Word has length 102 [2022-11-23 14:45:05,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:45:05,739 INFO L495 AbstractCegarLoop]: Abstraction has 3284 states and 5218 transitions. [2022-11-23 14:45:05,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2022-11-23 14:45:05,740 INFO L276 IsEmpty]: Start isEmpty. Operand 3284 states and 5218 transitions. [2022-11-23 14:45:05,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-23 14:45:05,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:45:05,745 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 14:45:05,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 14:45:05,746 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:45:05,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:45:05,747 INFO L85 PathProgramCache]: Analyzing trace with hash 370777201, now seen corresponding path program 1 times [2022-11-23 14:45:05,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:45:05,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667388198] [2022-11-23 14:45:05,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:45:05,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:45:05,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:45:06,072 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-23 14:45:06,072 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:45:06,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667388198] [2022-11-23 14:45:06,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667388198] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:45:06,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196656973] [2022-11-23 14:45:06,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:45:06,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:45:06,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:45:06,082 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:45:06,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 14:45:06,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:45:06,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 1585 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 14:45:06,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:45:06,626 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 14:45:06,627 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:45:06,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196656973] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:45:06,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 14:45:06,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2022-11-23 14:45:06,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411403694] [2022-11-23 14:45:06,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:45:06,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:45:06,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:45:06,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:45:06,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:45:06,631 INFO L87 Difference]: Start difference. First operand 3284 states and 5218 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-23 14:45:07,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:45:07,118 INFO L93 Difference]: Finished difference Result 6607 states and 10671 transitions. [2022-11-23 14:45:07,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:45:07,119 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 106 [2022-11-23 14:45:07,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:45:07,149 INFO L225 Difference]: With dead ends: 6607 [2022-11-23 14:45:07,150 INFO L226 Difference]: Without dead ends: 3338 [2022-11-23 14:45:07,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:45:07,184 INFO L413 NwaCegarLoop]: 636 mSDtfsCounter, 85 mSDsluCounter, 1185 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 1821 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:45:07,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 1821 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:45:07,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3338 states. [2022-11-23 14:45:07,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3338 to 3338. [2022-11-23 14:45:07,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3338 states, 2401 states have (on average 1.544356518117451) internal successors, (3708), 2467 states have internal predecessors, (3708), 726 states have call successors, (726), 199 states have call predecessors, (726), 210 states have return successors, (838), 695 states have call predecessors, (838), 718 states have call successors, (838) [2022-11-23 14:45:07,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3338 states to 3338 states and 5272 transitions. [2022-11-23 14:45:07,540 INFO L78 Accepts]: Start accepts. Automaton has 3338 states and 5272 transitions. Word has length 106 [2022-11-23 14:45:07,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:45:07,543 INFO L495 AbstractCegarLoop]: Abstraction has 3338 states and 5272 transitions. [2022-11-23 14:45:07,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-23 14:45:07,544 INFO L276 IsEmpty]: Start isEmpty. Operand 3338 states and 5272 transitions. [2022-11-23 14:45:07,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-23 14:45:07,549 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:45:07,549 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:45:07,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 14:45:07,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:45:07,759 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:45:07,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:45:07,760 INFO L85 PathProgramCache]: Analyzing trace with hash 388528680, now seen corresponding path program 1 times [2022-11-23 14:45:07,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:45:07,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332330319] [2022-11-23 14:45:07,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:45:07,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:45:07,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:45:08,041 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 14:45:08,041 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:45:08,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332330319] [2022-11-23 14:45:08,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332330319] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:45:08,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498221114] [2022-11-23 14:45:08,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:45:08,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:45:08,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:45:08,044 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:45:08,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 14:45:08,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:45:08,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 1590 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 14:45:08,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:45:08,578 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-23 14:45:08,578 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:45:08,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498221114] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:45:08,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 14:45:08,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2022-11-23 14:45:08,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526819928] [2022-11-23 14:45:08,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:45:08,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:45:08,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:45:08,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:45:08,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:45:08,580 INFO L87 Difference]: Start difference. First operand 3338 states and 5272 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-23 14:45:09,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:45:09,080 INFO L93 Difference]: Finished difference Result 6688 states and 10690 transitions. [2022-11-23 14:45:09,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:45:09,081 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 108 [2022-11-23 14:45:09,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:45:09,116 INFO L225 Difference]: With dead ends: 6688 [2022-11-23 14:45:09,117 INFO L226 Difference]: Without dead ends: 3329 [2022-11-23 14:45:09,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:45:09,149 INFO L413 NwaCegarLoop]: 635 mSDtfsCounter, 91 mSDsluCounter, 1182 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 1817 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:45:09,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 1817 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:45:09,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3329 states. [2022-11-23 14:45:09,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3329 to 3329. [2022-11-23 14:45:09,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3329 states, 2392 states have (on average 1.5351170568561874) internal successors, (3672), 2458 states have internal predecessors, (3672), 726 states have call successors, (726), 199 states have call predecessors, (726), 210 states have return successors, (838), 695 states have call predecessors, (838), 718 states have call successors, (838) [2022-11-23 14:45:09,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3329 states to 3329 states and 5236 transitions. [2022-11-23 14:45:09,479 INFO L78 Accepts]: Start accepts. Automaton has 3329 states and 5236 transitions. Word has length 108 [2022-11-23 14:45:09,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:45:09,479 INFO L495 AbstractCegarLoop]: Abstraction has 3329 states and 5236 transitions. [2022-11-23 14:45:09,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-23 14:45:09,480 INFO L276 IsEmpty]: Start isEmpty. Operand 3329 states and 5236 transitions. [2022-11-23 14:45:09,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-23 14:45:09,484 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:45:09,484 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 14:45:09,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 14:45:09,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:45:09,694 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:45:09,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:45:09,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1365136672, now seen corresponding path program 1 times [2022-11-23 14:45:09,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:45:09,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281931894] [2022-11-23 14:45:09,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:45:09,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:45:09,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:45:09,987 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-23 14:45:09,988 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:45:09,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281931894] [2022-11-23 14:45:09,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281931894] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:45:09,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23100100] [2022-11-23 14:45:09,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:45:09,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:45:09,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:45:09,990 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:45:10,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 14:45:10,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:45:10,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 1594 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:45:10,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:45:10,585 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 14:45:10,585 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:45:10,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23100100] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:45:10,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 14:45:10,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-11-23 14:45:10,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301021655] [2022-11-23 14:45:10,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:45:10,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:45:10,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:45:10,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:45:10,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:45:10,589 INFO L87 Difference]: Start difference. First operand 3329 states and 5236 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-23 14:45:12,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:45:12,424 INFO L93 Difference]: Finished difference Result 8508 states and 13836 transitions. [2022-11-23 14:45:12,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:45:12,425 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 109 [2022-11-23 14:45:12,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:45:12,475 INFO L225 Difference]: With dead ends: 8508 [2022-11-23 14:45:12,477 INFO L226 Difference]: Without dead ends: 5194 [2022-11-23 14:45:12,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-23 14:45:12,512 INFO L413 NwaCegarLoop]: 788 mSDtfsCounter, 666 mSDsluCounter, 1380 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 2168 SdHoareTripleChecker+Invalid, 890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:45:12,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 2168 Invalid, 890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-23 14:45:12,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5194 states. [2022-11-23 14:45:13,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5194 to 5124. [2022-11-23 14:45:13,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5124 states, 3687 states have (on average 1.4890154597233523) internal successors, (5490), 3781 states have internal predecessors, (5490), 1103 states have call successors, (1103), 316 states have call predecessors, (1103), 333 states have return successors, (1471), 1062 states have call predecessors, (1471), 1091 states have call successors, (1471) [2022-11-23 14:45:13,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5124 states to 5124 states and 8064 transitions. [2022-11-23 14:45:13,130 INFO L78 Accepts]: Start accepts. Automaton has 5124 states and 8064 transitions. Word has length 109 [2022-11-23 14:45:13,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:45:13,131 INFO L495 AbstractCegarLoop]: Abstraction has 5124 states and 8064 transitions. [2022-11-23 14:45:13,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-23 14:45:13,133 INFO L276 IsEmpty]: Start isEmpty. Operand 5124 states and 8064 transitions. [2022-11-23 14:45:13,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-23 14:45:13,140 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:45:13,140 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 14:45:13,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 14:45:13,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:45:13,351 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:45:13,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:45:13,352 INFO L85 PathProgramCache]: Analyzing trace with hash 409049355, now seen corresponding path program 1 times [2022-11-23 14:45:13,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:45:13,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2283627] [2022-11-23 14:45:13,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:45:13,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:45:13,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:45:13,668 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 14:45:13,669 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:45:13,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2283627] [2022-11-23 14:45:13,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2283627] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:45:13,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872584263] [2022-11-23 14:45:13,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:45:13,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:45:13,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:45:13,671 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:45:13,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 14:45:14,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:45:14,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 1597 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 14:45:14,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:45:14,214 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 14:45:14,214 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:45:14,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872584263] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:45:14,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 14:45:14,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-11-23 14:45:14,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699784028] [2022-11-23 14:45:14,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:45:14,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:45:14,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:45:14,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:45:14,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:45:14,217 INFO L87 Difference]: Start difference. First operand 5124 states and 8064 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-23 14:45:14,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:45:14,857 INFO L93 Difference]: Finished difference Result 10449 states and 16982 transitions. [2022-11-23 14:45:14,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:45:14,858 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 110 [2022-11-23 14:45:14,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:45:14,923 INFO L225 Difference]: With dead ends: 10449 [2022-11-23 14:45:14,923 INFO L226 Difference]: Without dead ends: 5340 [2022-11-23 14:45:14,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:45:14,960 INFO L413 NwaCegarLoop]: 650 mSDtfsCounter, 2 mSDsluCounter, 1931 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2581 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:45:14,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2581 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:45:14,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5340 states. [2022-11-23 14:45:15,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5340 to 5234. [2022-11-23 14:45:15,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5234 states, 3782 states have (on average 1.4767318878900053) internal successors, (5585), 3851 states have internal predecessors, (5585), 1103 states have call successors, (1103), 316 states have call predecessors, (1103), 348 states have return successors, (1542), 1102 states have call predecessors, (1542), 1091 states have call successors, (1542) [2022-11-23 14:45:15,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5234 states to 5234 states and 8230 transitions. [2022-11-23 14:45:15,576 INFO L78 Accepts]: Start accepts. Automaton has 5234 states and 8230 transitions. Word has length 110 [2022-11-23 14:45:15,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:45:15,578 INFO L495 AbstractCegarLoop]: Abstraction has 5234 states and 8230 transitions. [2022-11-23 14:45:15,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-23 14:45:15,583 INFO L276 IsEmpty]: Start isEmpty. Operand 5234 states and 8230 transitions. [2022-11-23 14:45:15,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-23 14:45:15,588 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:45:15,588 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 14:45:15,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 14:45:15,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-23 14:45:15,797 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:45:15,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:45:15,798 INFO L85 PathProgramCache]: Analyzing trace with hash -406614207, now seen corresponding path program 1 times [2022-11-23 14:45:15,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:45:15,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418697521] [2022-11-23 14:45:15,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:45:15,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:45:15,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:45:16,206 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 14:45:16,206 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:45:16,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418697521] [2022-11-23 14:45:16,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418697521] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:45:16,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015001879] [2022-11-23 14:45:16,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:45:16,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:45:16,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:45:16,209 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:45:16,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 14:45:16,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:45:16,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 1595 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-23 14:45:16,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:45:16,868 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-23 14:45:16,868 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:45:16,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015001879] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:45:16,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 14:45:16,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2022-11-23 14:45:16,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772079634] [2022-11-23 14:45:16,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:45:16,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 14:45:16,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:45:16,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 14:45:16,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-23 14:45:16,871 INFO L87 Difference]: Start difference. First operand 5234 states and 8230 transitions. Second operand has 6 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-23 14:45:18,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:45:18,595 INFO L93 Difference]: Finished difference Result 11731 states and 18766 transitions. [2022-11-23 14:45:18,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 14:45:18,596 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) Word has length 110 [2022-11-23 14:45:18,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:45:18,660 INFO L225 Difference]: With dead ends: 11731 [2022-11-23 14:45:18,661 INFO L226 Difference]: Without dead ends: 6512 [2022-11-23 14:45:18,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-11-23 14:45:18,697 INFO L413 NwaCegarLoop]: 918 mSDtfsCounter, 785 mSDsluCounter, 2942 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 3860 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-23 14:45:18,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [786 Valid, 3860 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-23 14:45:18,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6512 states. [2022-11-23 14:45:19,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6512 to 6384. [2022-11-23 14:45:19,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6384 states, 4663 states have (on average 1.4623632854385589) internal successors, (6819), 4754 states have internal predecessors, (6819), 1244 states have call successors, (1244), 417 states have call predecessors, (1244), 476 states have return successors, (2182), 1248 states have call predecessors, (2182), 1224 states have call successors, (2182) [2022-11-23 14:45:19,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6384 states to 6384 states and 10245 transitions. [2022-11-23 14:45:19,437 INFO L78 Accepts]: Start accepts. Automaton has 6384 states and 10245 transitions. Word has length 110 [2022-11-23 14:45:19,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:45:19,438 INFO L495 AbstractCegarLoop]: Abstraction has 6384 states and 10245 transitions. [2022-11-23 14:45:19,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-23 14:45:19,439 INFO L276 IsEmpty]: Start isEmpty. Operand 6384 states and 10245 transitions. [2022-11-23 14:45:19,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-23 14:45:19,443 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:45:19,444 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 14:45:19,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 14:45:19,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:45:19,654 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:45:19,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:45:19,654 INFO L85 PathProgramCache]: Analyzing trace with hash -588387793, now seen corresponding path program 1 times [2022-11-23 14:45:19,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:45:19,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44644385] [2022-11-23 14:45:19,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:45:19,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:45:19,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:45:20,043 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 14:45:20,043 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:45:20,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44644385] [2022-11-23 14:45:20,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44644385] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:45:20,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846610930] [2022-11-23 14:45:20,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:45:20,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:45:20,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:45:20,046 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:45:20,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 14:45:20,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:45:20,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 1601 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:45:20,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:45:20,659 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 14:45:20,660 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:45:20,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846610930] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:45:20,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 14:45:20,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2022-11-23 14:45:20,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034803113] [2022-11-23 14:45:20,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:45:20,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:45:20,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:45:20,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:45:20,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:45:20,663 INFO L87 Difference]: Start difference. First operand 6384 states and 10245 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-23 14:45:21,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:45:21,610 INFO L93 Difference]: Finished difference Result 13081 states and 21609 transitions. [2022-11-23 14:45:21,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:45:21,610 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 112 [2022-11-23 14:45:21,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:45:21,661 INFO L225 Difference]: With dead ends: 13081 [2022-11-23 14:45:21,661 INFO L226 Difference]: Without dead ends: 6721 [2022-11-23 14:45:21,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:45:21,715 INFO L413 NwaCegarLoop]: 633 mSDtfsCounter, 19 mSDsluCounter, 1144 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 1777 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:45:21,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 1777 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 14:45:21,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6721 states. [2022-11-23 14:45:22,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6721 to 6643. [2022-11-23 14:45:22,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6643 states, 4922 states have (on average 1.4713531084924827) internal successors, (7242), 5013 states have internal predecessors, (7242), 1244 states have call successors, (1244), 417 states have call predecessors, (1244), 476 states have return successors, (2182), 1248 states have call predecessors, (2182), 1224 states have call successors, (2182) [2022-11-23 14:45:22,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6643 states to 6643 states and 10668 transitions. [2022-11-23 14:45:22,358 INFO L78 Accepts]: Start accepts. Automaton has 6643 states and 10668 transitions. Word has length 112 [2022-11-23 14:45:22,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:45:22,359 INFO L495 AbstractCegarLoop]: Abstraction has 6643 states and 10668 transitions. [2022-11-23 14:45:22,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-23 14:45:22,360 INFO L276 IsEmpty]: Start isEmpty. Operand 6643 states and 10668 transitions. [2022-11-23 14:45:22,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-23 14:45:22,365 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:45:22,365 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 14:45:22,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-23 14:45:22,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:45:22,575 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:45:22,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:45:22,575 INFO L85 PathProgramCache]: Analyzing trace with hash 641849861, now seen corresponding path program 1 times [2022-11-23 14:45:22,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:45:22,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121674396] [2022-11-23 14:45:22,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:45:22,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:45:22,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:45:22,989 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 14:45:22,990 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:45:22,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121674396] [2022-11-23 14:45:22,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121674396] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:45:22,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888152267] [2022-11-23 14:45:22,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:45:22,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:45:22,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:45:22,992 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:45:23,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 14:45:23,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:45:23,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:45:23,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:45:23,535 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 14:45:23,536 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:45:23,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888152267] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:45:23,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 14:45:23,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-11-23 14:45:23,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429914475] [2022-11-23 14:45:23,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:45:23,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:45:23,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:45:23,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:45:23,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:45:23,542 INFO L87 Difference]: Start difference. First operand 6643 states and 10668 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-23 14:45:25,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:45:25,788 INFO L93 Difference]: Finished difference Result 16700 states and 28678 transitions. [2022-11-23 14:45:25,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:45:25,789 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 114 [2022-11-23 14:45:25,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:45:25,897 INFO L225 Difference]: With dead ends: 16700 [2022-11-23 14:45:25,897 INFO L226 Difference]: Without dead ends: 11368 [2022-11-23 14:45:25,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-23 14:45:26,000 INFO L413 NwaCegarLoop]: 815 mSDtfsCounter, 677 mSDsluCounter, 1401 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 679 SdHoareTripleChecker+Valid, 2216 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:45:26,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [679 Valid, 2216 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 875 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-23 14:45:26,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11368 states. [2022-11-23 14:45:27,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11368 to 11132. [2022-11-23 14:45:27,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11132 states, 8262 states have (on average 1.4663519728879206) internal successors, (12115), 8409 states have internal predecessors, (12115), 2071 states have call successors, (2071), 703 states have call predecessors, (2071), 798 states have return successors, (4480), 2079 states have call predecessors, (4480), 2038 states have call successors, (4480) [2022-11-23 14:45:27,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11132 states to 11132 states and 18666 transitions. [2022-11-23 14:45:27,565 INFO L78 Accepts]: Start accepts. Automaton has 11132 states and 18666 transitions. Word has length 114 [2022-11-23 14:45:27,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:45:27,569 INFO L495 AbstractCegarLoop]: Abstraction has 11132 states and 18666 transitions. [2022-11-23 14:45:27,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-23 14:45:27,570 INFO L276 IsEmpty]: Start isEmpty. Operand 11132 states and 18666 transitions. [2022-11-23 14:45:27,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-23 14:45:27,578 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:45:27,578 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:45:27,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-23 14:45:27,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-23 14:45:27,794 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:45:27,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:45:27,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1623455249, now seen corresponding path program 1 times [2022-11-23 14:45:27,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:45:27,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590384553] [2022-11-23 14:45:27,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:45:27,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:45:27,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:45:28,055 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 14:45:28,055 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:45:28,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590384553] [2022-11-23 14:45:28,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590384553] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:45:28,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632059376] [2022-11-23 14:45:28,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:45:28,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:45:28,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:45:28,058 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:45:28,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-23 14:45:28,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:45:28,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 1602 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:45:28,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:45:28,543 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-23 14:45:28,543 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:45:28,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632059376] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:45:28,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 14:45:28,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2022-11-23 14:45:28,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476310969] [2022-11-23 14:45:28,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:45:28,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:45:28,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:45:28,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:45:28,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:45:28,546 INFO L87 Difference]: Start difference. First operand 11132 states and 18666 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-23 14:45:29,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:45:29,661 INFO L93 Difference]: Finished difference Result 22544 states and 39469 transitions. [2022-11-23 14:45:29,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:45:29,661 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 114 [2022-11-23 14:45:29,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:45:29,737 INFO L225 Difference]: With dead ends: 22544 [2022-11-23 14:45:29,737 INFO L226 Difference]: Without dead ends: 11436 [2022-11-23 14:45:29,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 114 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:45:29,852 INFO L413 NwaCegarLoop]: 647 mSDtfsCounter, 4 mSDsluCounter, 1256 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1903 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:45:29,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1903 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:45:29,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11436 states. [2022-11-23 14:45:30,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11436 to 11178. [2022-11-23 14:45:30,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11178 states, 8308 states have (on average 1.4534183919114108) internal successors, (12075), 8455 states have internal predecessors, (12075), 2071 states have call successors, (2071), 703 states have call predecessors, (2071), 798 states have return successors, (4480), 2079 states have call predecessors, (4480), 2038 states have call successors, (4480) [2022-11-23 14:45:31,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11178 states to 11178 states and 18626 transitions. [2022-11-23 14:45:31,054 INFO L78 Accepts]: Start accepts. Automaton has 11178 states and 18626 transitions. Word has length 114 [2022-11-23 14:45:31,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:45:31,055 INFO L495 AbstractCegarLoop]: Abstraction has 11178 states and 18626 transitions. [2022-11-23 14:45:31,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-23 14:45:31,056 INFO L276 IsEmpty]: Start isEmpty. Operand 11178 states and 18626 transitions. [2022-11-23 14:45:31,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-23 14:45:31,061 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:45:31,061 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 14:45:31,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-23 14:45:31,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-23 14:45:31,271 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:45:31,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:45:31,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1865720142, now seen corresponding path program 1 times [2022-11-23 14:45:31,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:45:31,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781770509] [2022-11-23 14:45:31,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:45:31,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:45:31,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:45:31,858 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 14:45:31,858 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:45:31,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781770509] [2022-11-23 14:45:31,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781770509] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:45:31,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308372986] [2022-11-23 14:45:31,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:45:31,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:45:31,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:45:31,861 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:45:31,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-23 14:45:32,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:45:32,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 1604 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:45:32,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:45:32,382 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 14:45:32,383 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:45:32,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308372986] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:45:32,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 14:45:32,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-11-23 14:45:32,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037521667] [2022-11-23 14:45:32,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:45:32,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:45:32,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:45:32,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:45:32,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:45:32,386 INFO L87 Difference]: Start difference. First operand 11178 states and 18626 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-23 14:45:35,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:45:35,108 INFO L93 Difference]: Finished difference Result 25707 states and 45200 transitions. [2022-11-23 14:45:35,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:45:35,109 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 115 [2022-11-23 14:45:35,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:45:35,244 INFO L225 Difference]: With dead ends: 25707 [2022-11-23 14:45:35,244 INFO L226 Difference]: Without dead ends: 15867 [2022-11-23 14:45:35,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-23 14:45:35,533 INFO L413 NwaCegarLoop]: 819 mSDtfsCounter, 677 mSDsluCounter, 1646 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 679 SdHoareTripleChecker+Valid, 2465 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:45:35,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [679 Valid, 2465 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 939 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-23 14:45:35,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15867 states. [2022-11-23 14:45:37,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15867 to 15657. [2022-11-23 14:45:37,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15657 states, 11638 states have (on average 1.4512802887094003) internal successors, (16890), 11841 states have internal predecessors, (16890), 2898 states have call successors, (2898), 989 states have call predecessors, (2898), 1120 states have return successors, (7365), 2910 states have call predecessors, (7365), 2852 states have call successors, (7365) [2022-11-23 14:45:37,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15657 states to 15657 states and 27153 transitions. [2022-11-23 14:45:37,581 INFO L78 Accepts]: Start accepts. Automaton has 15657 states and 27153 transitions. Word has length 115 [2022-11-23 14:45:37,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:45:37,582 INFO L495 AbstractCegarLoop]: Abstraction has 15657 states and 27153 transitions. [2022-11-23 14:45:37,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-23 14:45:37,582 INFO L276 IsEmpty]: Start isEmpty. Operand 15657 states and 27153 transitions. [2022-11-23 14:45:37,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-23 14:45:37,589 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:45:37,589 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 14:45:37,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-23 14:45:37,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-23 14:45:37,800 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:45:37,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:45:37,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1196705317, now seen corresponding path program 1 times [2022-11-23 14:45:37,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:45:37,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500185187] [2022-11-23 14:45:37,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:45:37,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:45:37,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:45:38,176 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 14:45:38,176 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:45:38,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500185187] [2022-11-23 14:45:38,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500185187] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:45:38,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523203685] [2022-11-23 14:45:38,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:45:38,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:45:38,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:45:38,180 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:45:38,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-23 14:45:38,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:45:38,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 1605 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:45:38,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:45:38,730 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 14:45:38,730 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:45:38,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523203685] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:45:38,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 14:45:38,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-11-23 14:45:38,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325942103] [2022-11-23 14:45:38,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:45:38,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:45:38,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:45:38,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:45:38,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:45:38,734 INFO L87 Difference]: Start difference. First operand 15657 states and 27153 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-23 14:45:41,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:45:41,850 INFO L93 Difference]: Finished difference Result 33780 states and 60840 transitions. [2022-11-23 14:45:41,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:45:41,851 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 116 [2022-11-23 14:45:41,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:45:42,029 INFO L225 Difference]: With dead ends: 33780 [2022-11-23 14:45:42,029 INFO L226 Difference]: Without dead ends: 19482 [2022-11-23 14:45:42,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-23 14:45:42,318 INFO L413 NwaCegarLoop]: 792 mSDtfsCounter, 695 mSDsluCounter, 1584 mSDsCounter, 0 mSdLazyCounter, 907 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 2376 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:45:42,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [697 Valid, 2376 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 907 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-23 14:45:42,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19482 states. [2022-11-23 14:45:44,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19482 to 18874. [2022-11-23 14:45:44,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18874 states, 13907 states have (on average 1.4505644639390236) internal successors, (20173), 14180 states have internal predecessors, (20173), 3602 states have call successors, (3602), 1228 states have call predecessors, (3602), 1364 states have return successors, (9721), 3573 states have call predecessors, (9721), 3547 states have call successors, (9721) [2022-11-23 14:45:44,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18874 states to 18874 states and 33496 transitions. [2022-11-23 14:45:44,498 INFO L78 Accepts]: Start accepts. Automaton has 18874 states and 33496 transitions. Word has length 116 [2022-11-23 14:45:44,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:45:44,499 INFO L495 AbstractCegarLoop]: Abstraction has 18874 states and 33496 transitions. [2022-11-23 14:45:44,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-23 14:45:44,499 INFO L276 IsEmpty]: Start isEmpty. Operand 18874 states and 33496 transitions. [2022-11-23 14:45:44,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-23 14:45:44,504 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:45:44,504 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:45:44,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-23 14:45:44,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:45:44,712 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:45:44,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:45:44,713 INFO L85 PathProgramCache]: Analyzing trace with hash 463346682, now seen corresponding path program 1 times [2022-11-23 14:45:44,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:45:44,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474297980] [2022-11-23 14:45:44,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:45:44,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:45:44,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:45:44,942 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-23 14:45:44,942 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:45:44,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474297980] [2022-11-23 14:45:44,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474297980] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:45:44,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009128065] [2022-11-23 14:45:44,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:45:44,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:45:44,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:45:44,946 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:45:44,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c2e74a-14c4-44fa-b54a-b42a3554f871/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-23 14:45:45,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:45:45,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 14:45:45,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:45:45,705 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 14:45:45,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:45:46,023 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 14:45:46,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009128065] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:45:46,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1722367656] [2022-11-23 14:45:46,057 INFO L159 IcfgInterpreter]: Started Sifa with 97 locations of interest [2022-11-23 14:45:46,057 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:45:46,067 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:45:46,073 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:45:46,073 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:45:53,474 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 582 for LOIs [2022-11-23 14:46:01,656 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift__wrappee__executivefloor with input of size 578 for LOIs [2022-11-23 14:46:14,180 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 455 for LOIs [2022-11-23 14:46:17,801 INFO L197 IcfgInterpreter]: Interpreting procedure isExecutiveFloorCalling with input of size 510 for LOIs [2022-11-23 14:46:20,933 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 512 for LOIs [2022-11-23 14:46:21,360 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 509 for LOIs [2022-11-23 14:46:21,834 INFO L197 IcfgInterpreter]: Interpreting procedure existInLiftCallsInDirection with input of size 65 for LOIs [2022-11-23 14:46:21,930 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 460 for LOIs [2022-11-23 14:46:23,072 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 456 for LOIs [2022-11-23 14:46:23,164 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentHeading with input of size 445 for LOIs [2022-11-23 14:46:23,245 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 548 for LOIs [2022-11-23 14:46:26,624 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 800 for LOIs