./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.03.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.03.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d5e8784cabcb38b73600d610d5b7e0bbbbf790f527b046ae80f9a34c4ea82403 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 20:25:59,516 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 20:25:59,519 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 20:25:59,585 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 20:25:59,587 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 20:25:59,591 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 20:25:59,594 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 20:25:59,598 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 20:25:59,601 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 20:25:59,608 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 20:25:59,610 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 20:25:59,612 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 20:25:59,612 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 20:25:59,615 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 20:25:59,618 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 20:25:59,627 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 20:25:59,629 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 20:25:59,631 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 20:25:59,634 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 20:25:59,642 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 20:25:59,645 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 20:25:59,647 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 20:25:59,650 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 20:25:59,652 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 20:25:59,663 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 20:25:59,663 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 20:25:59,664 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 20:25:59,667 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 20:25:59,667 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 20:25:59,670 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 20:25:59,670 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 20:25:59,672 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 20:25:59,674 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 20:25:59,675 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 20:25:59,677 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 20:25:59,678 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 20:25:59,678 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 20:25:59,679 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 20:25:59,679 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 20:25:59,680 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 20:25:59,681 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 20:25:59,682 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 20:25:59,731 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 20:25:59,732 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 20:25:59,732 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 20:25:59,733 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 20:25:59,734 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 20:25:59,738 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 20:25:59,738 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 20:25:59,739 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 20:25:59,739 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 20:25:59,739 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 20:25:59,740 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 20:25:59,741 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 20:25:59,741 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 20:25:59,741 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 20:25:59,742 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 20:25:59,742 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 20:25:59,742 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 20:25:59,742 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 20:25:59,743 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 20:25:59,744 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 20:25:59,744 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 20:25:59,744 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 20:25:59,744 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 20:25:59,745 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 20:25:59,745 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 20:25:59,745 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 20:25:59,746 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 20:25:59,746 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 20:25:59,746 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 20:25:59,746 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 20:25:59,747 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 20:25:59,747 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 20:25:59,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:25:59,748 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 20:25:59,748 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 20:25:59,748 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 20:25:59,749 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 20:25:59,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 20:25:59,749 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 20:25:59,749 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 20:25:59,750 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 20:25:59,750 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d5e8784cabcb38b73600d610d5b7e0bbbbf790f527b046ae80f9a34c4ea82403 [2021-11-25 20:26:00,031 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:26:00,063 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:26:00,065 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:26:00,066 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:26:00,067 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:26:00,068 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.03.cil-1.c [2021-11-25 20:26:00,150 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/data/80fd49812/dfaeae55048f4b03ac073218d2c39e20/FLAGaf7d0b027 [2021-11-25 20:26:01,134 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:26:01,135 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/sv-benchmarks/c/combinations/Problem05_label43+token_ring.03.cil-1.c [2021-11-25 20:26:01,193 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/data/80fd49812/dfaeae55048f4b03ac073218d2c39e20/FLAGaf7d0b027 [2021-11-25 20:26:01,474 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/data/80fd49812/dfaeae55048f4b03ac073218d2c39e20 [2021-11-25 20:26:01,477 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:26:01,478 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:26:01,482 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:26:01,482 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:26:01,486 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:26:01,487 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:26:01" (1/1) ... [2021-11-25 20:26:01,488 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@449ac97b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:26:01, skipping insertion in model container [2021-11-25 20:26:01,489 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:26:01" (1/1) ... [2021-11-25 20:26:01,498 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:26:01,820 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:26:04,673 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/sv-benchmarks/c/combinations/Problem05_label43+token_ring.03.cil-1.c[381679,381692] [2021-11-25 20:26:04,709 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/sv-benchmarks/c/combinations/Problem05_label43+token_ring.03.cil-1.c[383339,383352] [2021-11-25 20:26:04,985 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:26:04,996 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 20:26:06,444 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/sv-benchmarks/c/combinations/Problem05_label43+token_ring.03.cil-1.c[381679,381692] [2021-11-25 20:26:06,449 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/sv-benchmarks/c/combinations/Problem05_label43+token_ring.03.cil-1.c[383339,383352] [2021-11-25 20:26:06,479 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:26:06,570 INFO L208 MainTranslator]: Completed translation [2021-11-25 20:26:06,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:26:06 WrapperNode [2021-11-25 20:26:06,571 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:26:06,573 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 20:26:06,573 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 20:26:06,573 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 20:26:06,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:26:06" (1/1) ... [2021-11-25 20:26:06,704 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:26:06" (1/1) ... [2021-11-25 20:26:07,118 INFO L137 Inliner]: procedures = 50, calls = 51, calls flagged for inlining = 27, calls inlined = 27, statements flattened = 12682 [2021-11-25 20:26:07,119 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 20:26:07,120 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 20:26:07,120 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 20:26:07,121 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 20:26:07,130 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:26:06" (1/1) ... [2021-11-25 20:26:07,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:26:06" (1/1) ... [2021-11-25 20:26:07,266 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:26:06" (1/1) ... [2021-11-25 20:26:07,267 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:26:06" (1/1) ... [2021-11-25 20:26:07,509 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:26:06" (1/1) ... [2021-11-25 20:26:07,571 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:26:06" (1/1) ... [2021-11-25 20:26:07,700 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:26:06" (1/1) ... [2021-11-25 20:26:07,821 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 20:26:07,823 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 20:26:07,823 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 20:26:07,823 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 20:26:07,837 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:26:06" (1/1) ... [2021-11-25 20:26:07,845 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:26:07,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:26:07,872 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 20:26:07,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 20:26:07,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 20:26:07,936 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-11-25 20:26:07,936 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-11-25 20:26:07,936 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-11-25 20:26:07,937 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-11-25 20:26:07,937 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-11-25 20:26:07,937 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-11-25 20:26:07,937 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-11-25 20:26:07,937 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-11-25 20:26:07,937 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-11-25 20:26:07,937 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-11-25 20:26:07,937 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-11-25 20:26:07,937 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-11-25 20:26:07,938 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-11-25 20:26:07,938 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-11-25 20:26:07,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 20:26:07,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 20:26:07,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 20:26:08,130 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 20:26:08,142 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 20:26:16,571 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 20:26:19,330 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 20:26:19,331 INFO L301 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-25 20:26:19,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:26:19 BoogieIcfgContainer [2021-11-25 20:26:19,338 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 20:26:19,340 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 20:26:19,340 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 20:26:19,344 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 20:26:19,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:26:01" (1/3) ... [2021-11-25 20:26:19,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f46eb95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:26:19, skipping insertion in model container [2021-11-25 20:26:19,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:26:06" (2/3) ... [2021-11-25 20:26:19,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f46eb95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:26:19, skipping insertion in model container [2021-11-25 20:26:19,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:26:19" (3/3) ... [2021-11-25 20:26:19,348 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.03.cil-1.c [2021-11-25 20:26:19,354 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 20:26:19,354 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-25 20:26:19,422 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:26:19,431 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 20:26:19,431 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-25 20:26:19,504 INFO L276 IsEmpty]: Start isEmpty. Operand has 1738 states, 1709 states have (on average 1.9748390871854886) internal successors, (3375), 1714 states have internal predecessors, (3375), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2021-11-25 20:26:19,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-25 20:26:19,515 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:26:19,516 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:26:19,516 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:26:19,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:26:19,523 INFO L85 PathProgramCache]: Analyzing trace with hash -554508062, now seen corresponding path program 1 times [2021-11-25 20:26:19,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:26:19,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133739892] [2021-11-25 20:26:19,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:26:19,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:26:19,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:26:19,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:26:19,955 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:26:19,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133739892] [2021-11-25 20:26:19,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133739892] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:26:19,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:26:19,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:26:19,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274130552] [2021-11-25 20:26:19,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:26:19,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:26:19,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:26:20,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:26:20,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:26:20,043 INFO L87 Difference]: Start difference. First operand has 1738 states, 1709 states have (on average 1.9748390871854886) internal successors, (3375), 1714 states have internal predecessors, (3375), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 20:26:20,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:26:20,930 INFO L93 Difference]: Finished difference Result 3547 states and 6943 transitions. [2021-11-25 20:26:20,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:26:20,933 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 41 [2021-11-25 20:26:20,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:26:20,975 INFO L225 Difference]: With dead ends: 3547 [2021-11-25 20:26:20,975 INFO L226 Difference]: Without dead ends: 1808 [2021-11-25 20:26:20,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:26:20,990 INFO L933 BasicCegarLoop]: 3248 mSDtfsCounter, 3490 mSDsluCounter, 3439 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3490 SdHoareTripleChecker+Valid, 6432 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:26:20,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3490 Valid, 6432 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 20:26:21,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1808 states. [2021-11-25 20:26:21,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1808 to 1807. [2021-11-25 20:26:21,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1807 states, 1761 states have (on average 1.9522998296422487) internal successors, (3438), 1765 states have internal predecessors, (3438), 32 states have call successors, (32), 13 states have call predecessors, (32), 12 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-25 20:26:21,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1807 states to 1807 states and 3500 transitions. [2021-11-25 20:26:21,159 INFO L78 Accepts]: Start accepts. Automaton has 1807 states and 3500 transitions. Word has length 41 [2021-11-25 20:26:21,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:26:21,160 INFO L470 AbstractCegarLoop]: Abstraction has 1807 states and 3500 transitions. [2021-11-25 20:26:21,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 20:26:21,161 INFO L276 IsEmpty]: Start isEmpty. Operand 1807 states and 3500 transitions. [2021-11-25 20:26:21,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-25 20:26:21,167 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:26:21,167 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:26:21,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 20:26:21,168 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:26:21,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:26:21,169 INFO L85 PathProgramCache]: Analyzing trace with hash -604417362, now seen corresponding path program 1 times [2021-11-25 20:26:21,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:26:21,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023505521] [2021-11-25 20:26:21,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:26:21,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:26:21,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:26:21,284 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 20:26:21,285 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:26:21,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023505521] [2021-11-25 20:26:21,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023505521] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:26:21,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041115663] [2021-11-25 20:26:21,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:26:21,286 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:26:21,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:26:21,301 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:26:21,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 20:26:21,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:26:21,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 20:26:21,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:26:21,722 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-25 20:26:21,722 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:26:21,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041115663] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:26:21,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:26:21,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2021-11-25 20:26:21,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192263621] [2021-11-25 20:26:21,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:26:21,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:26:21,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:26:21,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:26:21,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:26:21,727 INFO L87 Difference]: Start difference. First operand 1807 states and 3500 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-25 20:26:22,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:26:22,176 INFO L93 Difference]: Finished difference Result 2122 states and 3949 transitions. [2021-11-25 20:26:22,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:26:22,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 74 [2021-11-25 20:26:22,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:26:22,204 INFO L225 Difference]: With dead ends: 2122 [2021-11-25 20:26:22,205 INFO L226 Difference]: Without dead ends: 1961 [2021-11-25 20:26:22,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:26:22,208 INFO L933 BasicCegarLoop]: 3204 mSDtfsCounter, 3374 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3374 SdHoareTripleChecker+Valid, 3301 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:26:22,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3374 Valid, 3301 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 20:26:22,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1961 states. [2021-11-25 20:26:22,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1961 to 1955. [2021-11-25 20:26:22,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1955 states, 1873 states have (on average 1.9183128670581955) internal successors, (3593), 1878 states have internal predecessors, (3593), 56 states have call successors, (56), 25 states have call predecessors, (56), 24 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2021-11-25 20:26:22,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1955 states to 1955 states and 3703 transitions. [2021-11-25 20:26:22,344 INFO L78 Accepts]: Start accepts. Automaton has 1955 states and 3703 transitions. Word has length 74 [2021-11-25 20:26:22,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:26:22,345 INFO L470 AbstractCegarLoop]: Abstraction has 1955 states and 3703 transitions. [2021-11-25 20:26:22,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-25 20:26:22,346 INFO L276 IsEmpty]: Start isEmpty. Operand 1955 states and 3703 transitions. [2021-11-25 20:26:22,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-25 20:26:22,357 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:26:22,357 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:26:22,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 20:26:22,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:26:22,561 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:26:22,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:26:22,562 INFO L85 PathProgramCache]: Analyzing trace with hash -2036667664, now seen corresponding path program 1 times [2021-11-25 20:26:22,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:26:22,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221265991] [2021-11-25 20:26:22,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:26:22,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:26:22,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:26:22,689 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 20:26:22,690 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:26:22,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221265991] [2021-11-25 20:26:22,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221265991] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:26:22,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791088280] [2021-11-25 20:26:22,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:26:22,691 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:26:22,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:26:22,693 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:26:22,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 20:26:22,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:26:22,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 20:26:22,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:26:23,046 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-25 20:26:23,046 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:26:23,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791088280] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:26:23,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:26:23,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2021-11-25 20:26:23,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996456274] [2021-11-25 20:26:23,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:26:23,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:26:23,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:26:23,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:26:23,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:26:23,050 INFO L87 Difference]: Start difference. First operand 1955 states and 3703 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-25 20:26:23,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:26:23,632 INFO L93 Difference]: Finished difference Result 2560 states and 4558 transitions. [2021-11-25 20:26:23,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:26:23,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 74 [2021-11-25 20:26:23,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:26:23,661 INFO L225 Difference]: With dead ends: 2560 [2021-11-25 20:26:23,661 INFO L226 Difference]: Without dead ends: 2251 [2021-11-25 20:26:23,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:26:23,668 INFO L933 BasicCegarLoop]: 3173 mSDtfsCounter, 3371 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3371 SdHoareTripleChecker+Valid, 3270 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:26:23,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3371 Valid, 3270 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 20:26:23,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2251 states. [2021-11-25 20:26:23,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2251 to 2243. [2021-11-25 20:26:23,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2243 states, 2091 states have (on average 1.860832137733142) internal successors, (3891), 2098 states have internal predecessors, (3891), 102 states have call successors, (102), 49 states have call predecessors, (102), 48 states have return successors, (100), 96 states have call predecessors, (100), 100 states have call successors, (100) [2021-11-25 20:26:23,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2243 states to 2243 states and 4093 transitions. [2021-11-25 20:26:23,807 INFO L78 Accepts]: Start accepts. Automaton has 2243 states and 4093 transitions. Word has length 74 [2021-11-25 20:26:23,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:26:23,809 INFO L470 AbstractCegarLoop]: Abstraction has 2243 states and 4093 transitions. [2021-11-25 20:26:23,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-25 20:26:23,810 INFO L276 IsEmpty]: Start isEmpty. Operand 2243 states and 4093 transitions. [2021-11-25 20:26:23,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-25 20:26:23,814 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:26:23,814 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:26:23,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 20:26:24,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:26:24,030 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:26:24,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:26:24,030 INFO L85 PathProgramCache]: Analyzing trace with hash 770705902, now seen corresponding path program 1 times [2021-11-25 20:26:24,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:26:24,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27764483] [2021-11-25 20:26:24,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:26:24,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:26:24,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:26:24,185 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-25 20:26:24,185 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:26:24,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27764483] [2021-11-25 20:26:24,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27764483] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:26:24,186 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:26:24,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 20:26:24,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017827467] [2021-11-25 20:26:24,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:26:24,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 20:26:24,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:26:24,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 20:26:24,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:26:24,188 INFO L87 Difference]: Start difference. First operand 2243 states and 4093 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-25 20:26:25,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:26:25,418 INFO L93 Difference]: Finished difference Result 3547 states and 5884 transitions. [2021-11-25 20:26:25,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 20:26:25,418 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 74 [2021-11-25 20:26:25,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:26:25,448 INFO L225 Difference]: With dead ends: 3547 [2021-11-25 20:26:25,448 INFO L226 Difference]: Without dead ends: 2951 [2021-11-25 20:26:25,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-25 20:26:25,457 INFO L933 BasicCegarLoop]: 3180 mSDtfsCounter, 3607 mSDsluCounter, 10080 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3619 SdHoareTripleChecker+Valid, 12580 SdHoareTripleChecker+Invalid, 1163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-25 20:26:25,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3619 Valid, 12580 Invalid, 1163 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [104 Valid, 1059 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-25 20:26:25,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2021-11-25 20:26:25,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2787. [2021-11-25 20:26:25,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2787 states, 2499 states have (on average 1.776310524209684) internal successors, (4439), 2510 states have internal predecessors, (4439), 190 states have call successors, (190), 97 states have call predecessors, (190), 96 states have return successors, (188), 180 states have call predecessors, (188), 188 states have call successors, (188) [2021-11-25 20:26:25,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2787 states to 2787 states and 4817 transitions. [2021-11-25 20:26:25,679 INFO L78 Accepts]: Start accepts. Automaton has 2787 states and 4817 transitions. Word has length 74 [2021-11-25 20:26:25,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:26:25,681 INFO L470 AbstractCegarLoop]: Abstraction has 2787 states and 4817 transitions. [2021-11-25 20:26:25,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-25 20:26:25,682 INFO L276 IsEmpty]: Start isEmpty. Operand 2787 states and 4817 transitions. [2021-11-25 20:26:25,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-25 20:26:25,688 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:26:25,688 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:26:25,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 20:26:25,696 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:26:25,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:26:25,697 INFO L85 PathProgramCache]: Analyzing trace with hash -557897068, now seen corresponding path program 1 times [2021-11-25 20:26:25,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:26:25,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553993069] [2021-11-25 20:26:25,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:26:25,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:26:25,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:26:25,866 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-25 20:26:25,869 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:26:25,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553993069] [2021-11-25 20:26:25,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553993069] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:26:25,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959242254] [2021-11-25 20:26:25,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:26:25,871 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:26:25,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:26:25,873 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:26:25,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 20:26:26,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:26:26,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 20:26:26,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:26:26,290 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-25 20:26:26,290 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:26:26,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959242254] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:26:26,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:26:26,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-11-25 20:26:26,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225152574] [2021-11-25 20:26:26,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:26:26,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:26:26,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:26:26,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:26:26,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:26:26,296 INFO L87 Difference]: Start difference. First operand 2787 states and 4817 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-25 20:26:26,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:26:26,875 INFO L93 Difference]: Finished difference Result 3674 states and 6046 transitions. [2021-11-25 20:26:26,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:26:26,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 87 [2021-11-25 20:26:26,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:26:26,899 INFO L225 Difference]: With dead ends: 3674 [2021-11-25 20:26:26,899 INFO L226 Difference]: Without dead ends: 3070 [2021-11-25 20:26:26,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:26:26,904 INFO L933 BasicCegarLoop]: 3211 mSDtfsCounter, 44 mSDsluCounter, 3395 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 6376 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:26:26,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 6376 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 20:26:26,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3070 states. [2021-11-25 20:26:27,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3070 to 2939. [2021-11-25 20:26:27,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2939 states, 2635 states have (on average 1.7666034155597723) internal successors, (4655), 2646 states have internal predecessors, (4655), 198 states have call successors, (198), 105 states have call predecessors, (198), 104 states have return successors, (196), 188 states have call predecessors, (196), 196 states have call successors, (196) [2021-11-25 20:26:27,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2939 states to 2939 states and 5049 transitions. [2021-11-25 20:26:27,099 INFO L78 Accepts]: Start accepts. Automaton has 2939 states and 5049 transitions. Word has length 87 [2021-11-25 20:26:27,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:26:27,099 INFO L470 AbstractCegarLoop]: Abstraction has 2939 states and 5049 transitions. [2021-11-25 20:26:27,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-25 20:26:27,100 INFO L276 IsEmpty]: Start isEmpty. Operand 2939 states and 5049 transitions. [2021-11-25 20:26:27,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-25 20:26:27,106 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:26:27,107 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:26:27,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 20:26:27,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:26:27,333 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:26:27,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:26:27,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1347276593, now seen corresponding path program 1 times [2021-11-25 20:26:27,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:26:27,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568907601] [2021-11-25 20:26:27,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:26:27,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:26:27,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:26:27,419 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-25 20:26:27,419 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:26:27,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568907601] [2021-11-25 20:26:27,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568907601] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:26:27,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:26:27,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:26:27,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841294568] [2021-11-25 20:26:27,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:26:27,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:26:27,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:26:27,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:26:27,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:26:27,423 INFO L87 Difference]: Start difference. First operand 2939 states and 5049 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-25 20:26:28,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:26:28,028 INFO L93 Difference]: Finished difference Result 4876 states and 7734 transitions. [2021-11-25 20:26:28,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:26:28,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 97 [2021-11-25 20:26:28,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:26:28,053 INFO L225 Difference]: With dead ends: 4876 [2021-11-25 20:26:28,054 INFO L226 Difference]: Without dead ends: 3583 [2021-11-25 20:26:28,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:26:28,060 INFO L933 BasicCegarLoop]: 3204 mSDtfsCounter, 3367 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3367 SdHoareTripleChecker+Valid, 3301 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:26:28,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3367 Valid, 3301 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 20:26:28,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3583 states. [2021-11-25 20:26:28,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3583 to 3567. [2021-11-25 20:26:28,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3567 states, 3119 states have (on average 1.7015068932350113) internal successors, (5307), 3134 states have internal predecessors, (5307), 290 states have call successors, (290), 157 states have call predecessors, (290), 156 states have return successors, (288), 276 states have call predecessors, (288), 288 states have call successors, (288) [2021-11-25 20:26:28,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3567 states to 3567 states and 5885 transitions. [2021-11-25 20:26:28,228 INFO L78 Accepts]: Start accepts. Automaton has 3567 states and 5885 transitions. Word has length 97 [2021-11-25 20:26:28,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:26:28,228 INFO L470 AbstractCegarLoop]: Abstraction has 3567 states and 5885 transitions. [2021-11-25 20:26:28,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-25 20:26:28,229 INFO L276 IsEmpty]: Start isEmpty. Operand 3567 states and 5885 transitions. [2021-11-25 20:26:28,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-25 20:26:28,238 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:26:28,239 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-25 20:26:28,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 20:26:28,239 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:26:28,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:26:28,240 INFO L85 PathProgramCache]: Analyzing trace with hash 551662953, now seen corresponding path program 1 times [2021-11-25 20:26:28,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:26:28,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117493748] [2021-11-25 20:26:28,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:26:28,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:26:28,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:26:28,324 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 10 proven. 27 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-25 20:26:28,325 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:26:28,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117493748] [2021-11-25 20:26:28,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117493748] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:26:28,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200251259] [2021-11-25 20:26:28,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:26:28,326 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:26:28,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:26:28,327 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:26:28,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 20:26:28,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:26:28,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:26:28,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:26:28,681 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 20:26:28,681 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:26:28,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200251259] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:26:28,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:26:28,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-11-25 20:26:28,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310123384] [2021-11-25 20:26:28,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:26:28,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:26:28,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:26:28,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:26:28,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:26:28,686 INFO L87 Difference]: Start difference. First operand 3567 states and 5885 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-25 20:26:29,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:26:29,308 INFO L93 Difference]: Finished difference Result 4871 states and 7755 transitions. [2021-11-25 20:26:29,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:26:29,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 110 [2021-11-25 20:26:29,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:26:29,337 INFO L225 Difference]: With dead ends: 4871 [2021-11-25 20:26:29,338 INFO L226 Difference]: Without dead ends: 3579 [2021-11-25 20:26:29,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:26:29,346 INFO L933 BasicCegarLoop]: 3224 mSDtfsCounter, 99 mSDsluCounter, 3385 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 6378 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:26:29,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 6378 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 20:26:29,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3579 states. [2021-11-25 20:26:29,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3579 to 3559. [2021-11-25 20:26:29,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3559 states, 3111 states have (on average 1.6904532304725168) internal successors, (5259), 3126 states have internal predecessors, (5259), 290 states have call successors, (290), 157 states have call predecessors, (290), 156 states have return successors, (288), 276 states have call predecessors, (288), 288 states have call successors, (288) [2021-11-25 20:26:29,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3559 states to 3559 states and 5837 transitions. [2021-11-25 20:26:29,545 INFO L78 Accepts]: Start accepts. Automaton has 3559 states and 5837 transitions. Word has length 110 [2021-11-25 20:26:29,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:26:29,546 INFO L470 AbstractCegarLoop]: Abstraction has 3559 states and 5837 transitions. [2021-11-25 20:26:29,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-25 20:26:29,548 INFO L276 IsEmpty]: Start isEmpty. Operand 3559 states and 5837 transitions. [2021-11-25 20:26:29,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-25 20:26:29,558 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:26:29,559 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:26:29,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 20:26:29,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-25 20:26:29,773 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:26:29,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:26:29,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1797116135, now seen corresponding path program 1 times [2021-11-25 20:26:29,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:26:29,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591047047] [2021-11-25 20:26:29,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:26:29,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:26:29,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:26:29,874 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 10 proven. 25 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-25 20:26:29,874 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:26:29,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591047047] [2021-11-25 20:26:29,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591047047] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:26:29,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550752815] [2021-11-25 20:26:29,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:26:29,875 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:26:29,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:26:29,877 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:26:29,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 20:26:30,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:26:30,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 20:26:30,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:26:30,246 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-25 20:26:30,247 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:26:30,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550752815] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:26:30,247 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:26:30,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-11-25 20:26:30,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114479683] [2021-11-25 20:26:30,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:26:30,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:26:30,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:26:30,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:26:30,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:26:30,250 INFO L87 Difference]: Start difference. First operand 3559 states and 5837 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-25 20:26:30,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:26:30,805 INFO L93 Difference]: Finished difference Result 5287 states and 8126 transitions. [2021-11-25 20:26:30,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:26:30,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 110 [2021-11-25 20:26:30,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:26:30,859 INFO L225 Difference]: With dead ends: 5287 [2021-11-25 20:26:30,860 INFO L226 Difference]: Without dead ends: 4007 [2021-11-25 20:26:30,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:26:30,868 INFO L933 BasicCegarLoop]: 3174 mSDtfsCounter, 3377 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3377 SdHoareTripleChecker+Valid, 3198 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:26:30,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3377 Valid, 3198 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 20:26:30,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4007 states. [2021-11-25 20:26:31,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4007 to 4007. [2021-11-25 20:26:31,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4007 states, 3495 states have (on average 1.6317596566523604) internal successors, (5703), 3510 states have internal predecessors, (5703), 310 states have call successors, (310), 201 states have call predecessors, (310), 200 states have return successors, (308), 296 states have call predecessors, (308), 308 states have call successors, (308) [2021-11-25 20:26:31,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4007 states to 4007 states and 6321 transitions. [2021-11-25 20:26:31,066 INFO L78 Accepts]: Start accepts. Automaton has 4007 states and 6321 transitions. Word has length 110 [2021-11-25 20:26:31,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:26:31,067 INFO L470 AbstractCegarLoop]: Abstraction has 4007 states and 6321 transitions. [2021-11-25 20:26:31,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-25 20:26:31,067 INFO L276 IsEmpty]: Start isEmpty. Operand 4007 states and 6321 transitions. [2021-11-25 20:26:31,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-25 20:26:31,076 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:26:31,077 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:26:31,115 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-25 20:26:31,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-25 20:26:31,301 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:26:31,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:26:31,301 INFO L85 PathProgramCache]: Analyzing trace with hash -264146924, now seen corresponding path program 1 times [2021-11-25 20:26:31,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:26:31,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609598957] [2021-11-25 20:26:31,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:26:31,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:26:31,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:26:31,383 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-25 20:26:31,383 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:26:31,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609598957] [2021-11-25 20:26:31,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609598957] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:26:31,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806654238] [2021-11-25 20:26:31,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:26:31,384 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:26:31,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:26:31,397 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:26:31,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 20:26:31,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:26:31,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:26:31,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:26:31,699 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 20:26:31,699 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:26:31,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806654238] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:26:31,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:26:31,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-11-25 20:26:31,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812625544] [2021-11-25 20:26:31,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:26:31,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:26:31,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:26:31,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:26:31,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:26:31,702 INFO L87 Difference]: Start difference. First operand 4007 states and 6321 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-25 20:26:32,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:26:32,446 INFO L93 Difference]: Finished difference Result 7199 states and 10524 transitions. [2021-11-25 20:26:32,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:26:32,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 111 [2021-11-25 20:26:32,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:26:32,468 INFO L225 Difference]: With dead ends: 7199 [2021-11-25 20:26:32,468 INFO L226 Difference]: Without dead ends: 4839 [2021-11-25 20:26:32,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:26:32,479 INFO L933 BasicCegarLoop]: 3183 mSDtfsCounter, 57 mSDsluCounter, 3378 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 6333 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:26:32,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 6333 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 20:26:32,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4839 states. [2021-11-25 20:26:32,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4839 to 4235. [2021-11-25 20:26:32,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4235 states, 3695 states have (on average 1.6267929634641407) internal successors, (6011), 3711 states have internal predecessors, (6011), 324 states have call successors, (324), 215 states have call predecessors, (324), 214 states have return successors, (322), 309 states have call predecessors, (322), 322 states have call successors, (322) [2021-11-25 20:26:32,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4235 states to 4235 states and 6657 transitions. [2021-11-25 20:26:32,713 INFO L78 Accepts]: Start accepts. Automaton has 4235 states and 6657 transitions. Word has length 111 [2021-11-25 20:26:32,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:26:32,714 INFO L470 AbstractCegarLoop]: Abstraction has 4235 states and 6657 transitions. [2021-11-25 20:26:32,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-25 20:26:32,715 INFO L276 IsEmpty]: Start isEmpty. Operand 4235 states and 6657 transitions. [2021-11-25 20:26:32,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-25 20:26:32,726 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:26:32,726 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:26:32,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-25 20:26:32,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:26:32,941 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:26:32,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:26:32,941 INFO L85 PathProgramCache]: Analyzing trace with hash -126738895, now seen corresponding path program 1 times [2021-11-25 20:26:32,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:26:32,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561994429] [2021-11-25 20:26:32,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:26:32,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:26:32,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:26:33,015 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-25 20:26:33,015 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:26:33,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561994429] [2021-11-25 20:26:33,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561994429] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:26:33,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337845875] [2021-11-25 20:26:33,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:26:33,016 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:26:33,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:26:33,017 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:26:33,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-25 20:26:33,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:26:33,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 20:26:33,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:26:33,385 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-25 20:26:33,385 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:26:33,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337845875] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:26:33,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:26:33,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-11-25 20:26:33,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996223510] [2021-11-25 20:26:33,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:26:33,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:26:33,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:26:33,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:26:33,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:26:33,388 INFO L87 Difference]: Start difference. First operand 4235 states and 6657 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-25 20:26:34,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:26:34,052 INFO L93 Difference]: Finished difference Result 6519 states and 9705 transitions. [2021-11-25 20:26:34,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:26:34,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 111 [2021-11-25 20:26:34,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:26:34,072 INFO L225 Difference]: With dead ends: 6519 [2021-11-25 20:26:34,072 INFO L226 Difference]: Without dead ends: 4793 [2021-11-25 20:26:34,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:26:34,080 INFO L933 BasicCegarLoop]: 3212 mSDtfsCounter, 60 mSDsluCounter, 3395 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 6378 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:26:34,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 6378 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 20:26:34,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4793 states. [2021-11-25 20:26:34,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4793 to 4515. [2021-11-25 20:26:34,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4515 states, 3943 states have (on average 1.623890438752219) internal successors, (6403), 3959 states have internal predecessors, (6403), 340 states have call successors, (340), 231 states have call predecessors, (340), 230 states have return successors, (338), 325 states have call predecessors, (338), 338 states have call successors, (338) [2021-11-25 20:26:34,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4515 states to 4515 states and 7081 transitions. [2021-11-25 20:26:34,304 INFO L78 Accepts]: Start accepts. Automaton has 4515 states and 7081 transitions. Word has length 111 [2021-11-25 20:26:34,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:26:34,304 INFO L470 AbstractCegarLoop]: Abstraction has 4515 states and 7081 transitions. [2021-11-25 20:26:34,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-25 20:26:34,305 INFO L276 IsEmpty]: Start isEmpty. Operand 4515 states and 7081 transitions. [2021-11-25 20:26:34,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-25 20:26:34,316 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:26:34,316 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:26:34,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-25 20:26:34,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-25 20:26:34,541 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:26:34,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:26:34,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1313014030, now seen corresponding path program 1 times [2021-11-25 20:26:34,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:26:34,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484928365] [2021-11-25 20:26:34,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:26:34,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:26:34,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:26:34,625 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-25 20:26:34,625 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:26:34,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484928365] [2021-11-25 20:26:34,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484928365] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:26:34,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374831161] [2021-11-25 20:26:34,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:26:34,626 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:26:34,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:26:34,627 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:26:34,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-25 20:26:34,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:26:34,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 20:26:34,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:26:34,975 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-25 20:26:34,975 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:26:34,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374831161] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:26:34,976 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:26:34,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-11-25 20:26:34,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226997838] [2021-11-25 20:26:34,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:26:34,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:26:34,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:26:34,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:26:34,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:26:34,978 INFO L87 Difference]: Start difference. First operand 4515 states and 7081 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-25 20:26:35,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:26:35,633 INFO L93 Difference]: Finished difference Result 6981 states and 10437 transitions. [2021-11-25 20:26:35,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:26:35,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 112 [2021-11-25 20:26:35,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:26:35,652 INFO L225 Difference]: With dead ends: 6981 [2021-11-25 20:26:35,653 INFO L226 Difference]: Without dead ends: 5503 [2021-11-25 20:26:35,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:26:35,661 INFO L933 BasicCegarLoop]: 3230 mSDtfsCounter, 65 mSDsluCounter, 3395 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 6396 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:26:35,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 6396 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 20:26:35,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5503 states. [2021-11-25 20:26:36,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5503 to 4995. [2021-11-25 20:26:36,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4995 states, 4359 states have (on average 1.6102317045193852) internal successors, (7019), 4375 states have internal predecessors, (7019), 372 states have call successors, (372), 263 states have call predecessors, (372), 262 states have return successors, (370), 357 states have call predecessors, (370), 370 states have call successors, (370) [2021-11-25 20:26:36,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4995 states to 4995 states and 7761 transitions. [2021-11-25 20:26:36,028 INFO L78 Accepts]: Start accepts. Automaton has 4995 states and 7761 transitions. Word has length 112 [2021-11-25 20:26:36,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:26:36,028 INFO L470 AbstractCegarLoop]: Abstraction has 4995 states and 7761 transitions. [2021-11-25 20:26:36,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-25 20:26:36,029 INFO L276 IsEmpty]: Start isEmpty. Operand 4995 states and 7761 transitions. [2021-11-25 20:26:36,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-25 20:26:36,040 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:26:36,041 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:26:36,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-25 20:26:36,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:26:36,261 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:26:36,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:26:36,261 INFO L85 PathProgramCache]: Analyzing trace with hash -769810780, now seen corresponding path program 1 times [2021-11-25 20:26:36,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:26:36,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217124246] [2021-11-25 20:26:36,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:26:36,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:26:36,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:26:36,340 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-25 20:26:36,341 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:26:36,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217124246] [2021-11-25 20:26:36,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217124246] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:26:36,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894347045] [2021-11-25 20:26:36,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:26:36,341 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:26:36,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:26:36,353 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:26:36,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-25 20:26:36,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:26:36,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 20:26:36,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:26:36,637 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-25 20:26:36,637 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:26:36,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894347045] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:26:36,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:26:36,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-11-25 20:26:36,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969583309] [2021-11-25 20:26:36,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:26:36,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:26:36,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:26:36,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:26:36,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:26:36,640 INFO L87 Difference]: Start difference. First operand 4995 states and 7761 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-25 20:26:37,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:26:37,280 INFO L93 Difference]: Finished difference Result 7977 states and 11825 transitions. [2021-11-25 20:26:37,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:26:37,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 112 [2021-11-25 20:26:37,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:26:37,305 INFO L225 Difference]: With dead ends: 7977 [2021-11-25 20:26:37,305 INFO L226 Difference]: Without dead ends: 6251 [2021-11-25 20:26:37,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:26:37,313 INFO L933 BasicCegarLoop]: 3235 mSDtfsCounter, 71 mSDsluCounter, 3395 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 6401 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:26:37,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 6401 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 20:26:37,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6251 states. [2021-11-25 20:26:37,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6251 to 5659. [2021-11-25 20:26:37,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5659 states, 4927 states have (on average 1.5894053176375076) internal successors, (7831), 4943 states have internal predecessors, (7831), 420 states have call successors, (420), 311 states have call predecessors, (420), 310 states have return successors, (418), 405 states have call predecessors, (418), 418 states have call successors, (418) [2021-11-25 20:26:37,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5659 states to 5659 states and 8669 transitions. [2021-11-25 20:26:37,608 INFO L78 Accepts]: Start accepts. Automaton has 5659 states and 8669 transitions. Word has length 112 [2021-11-25 20:26:37,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:26:37,609 INFO L470 AbstractCegarLoop]: Abstraction has 5659 states and 8669 transitions. [2021-11-25 20:26:37,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-25 20:26:37,609 INFO L276 IsEmpty]: Start isEmpty. Operand 5659 states and 8669 transitions. [2021-11-25 20:26:37,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-25 20:26:37,624 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:26:37,624 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:26:37,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-25 20:26:37,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-25 20:26:37,849 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:26:37,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:26:37,849 INFO L85 PathProgramCache]: Analyzing trace with hash 270782027, now seen corresponding path program 1 times [2021-11-25 20:26:37,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:26:37,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952179898] [2021-11-25 20:26:37,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:26:37,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:26:37,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:26:37,962 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 17 proven. 26 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-25 20:26:37,963 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:26:37,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952179898] [2021-11-25 20:26:37,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952179898] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:26:37,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125426459] [2021-11-25 20:26:37,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:26:37,964 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:26:37,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:26:37,965 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:26:37,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-25 20:26:38,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:26:38,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-25 20:26:38,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:26:38,371 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-25 20:26:38,371 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:26:38,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125426459] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:26:38,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:26:38,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2021-11-25 20:26:38,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869627231] [2021-11-25 20:26:38,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:26:38,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 20:26:38,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:26:38,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 20:26:38,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:26:38,374 INFO L87 Difference]: Start difference. First operand 5659 states and 8669 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-25 20:26:39,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:26:39,485 INFO L93 Difference]: Finished difference Result 11169 states and 16023 transitions. [2021-11-25 20:26:39,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 20:26:39,486 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 112 [2021-11-25 20:26:39,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:26:39,508 INFO L225 Difference]: With dead ends: 11169 [2021-11-25 20:26:39,508 INFO L226 Difference]: Without dead ends: 7157 [2021-11-25 20:26:39,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-25 20:26:39,519 INFO L933 BasicCegarLoop]: 3181 mSDtfsCounter, 3573 mSDsluCounter, 6745 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3585 SdHoareTripleChecker+Valid, 9465 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:26:39,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3585 Valid, 9465 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 20:26:39,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7157 states. [2021-11-25 20:26:39,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7157 to 7153. [2021-11-25 20:26:39,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7153 states, 6119 states have (on average 1.5275371792776598) internal successors, (9347), 6141 states have internal predecessors, (9347), 594 states have call successors, (594), 439 states have call predecessors, (594), 438 states have return successors, (592), 573 states have call predecessors, (592), 592 states have call successors, (592) [2021-11-25 20:26:39,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7153 states to 7153 states and 10533 transitions. [2021-11-25 20:26:39,844 INFO L78 Accepts]: Start accepts. Automaton has 7153 states and 10533 transitions. Word has length 112 [2021-11-25 20:26:39,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:26:39,845 INFO L470 AbstractCegarLoop]: Abstraction has 7153 states and 10533 transitions. [2021-11-25 20:26:39,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-25 20:26:39,845 INFO L276 IsEmpty]: Start isEmpty. Operand 7153 states and 10533 transitions. [2021-11-25 20:26:39,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-25 20:26:39,857 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:26:39,860 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:26:39,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-25 20:26:40,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:26:40,075 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:26:40,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:26:40,075 INFO L85 PathProgramCache]: Analyzing trace with hash 573759670, now seen corresponding path program 1 times [2021-11-25 20:26:40,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:26:40,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670544367] [2021-11-25 20:26:40,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:26:40,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:26:40,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:26:40,167 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 19 proven. 25 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-25 20:26:40,168 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:26:40,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670544367] [2021-11-25 20:26:40,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670544367] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:26:40,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63135881] [2021-11-25 20:26:40,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:26:40,169 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:26:40,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:26:40,170 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:26:40,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-25 20:26:40,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:26:40,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-25 20:26:40,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:26:40,543 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-25 20:26:40,543 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:26:40,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63135881] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:26:40,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:26:40,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2021-11-25 20:26:40,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350090547] [2021-11-25 20:26:40,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:26:40,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 20:26:40,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:26:40,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 20:26:40,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:26:40,546 INFO L87 Difference]: Start difference. First operand 7153 states and 10533 transitions. Second operand has 6 states, 5 states have (on average 14.4) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-25 20:26:41,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:26:41,882 INFO L93 Difference]: Finished difference Result 14750 states and 20484 transitions. [2021-11-25 20:26:41,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 20:26:41,883 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.4) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 113 [2021-11-25 20:26:41,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:26:41,921 INFO L225 Difference]: With dead ends: 14750 [2021-11-25 20:26:41,922 INFO L226 Difference]: Without dead ends: 9244 [2021-11-25 20:26:41,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-25 20:26:41,939 INFO L933 BasicCegarLoop]: 3173 mSDtfsCounter, 3583 mSDsluCounter, 6739 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3595 SdHoareTripleChecker+Valid, 9452 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:26:41,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3595 Valid, 9452 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 20:26:41,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9244 states. [2021-11-25 20:26:42,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9244 to 9240. [2021-11-25 20:26:42,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9240 states, 7776 states have (on average 1.4681069958847737) internal successors, (11416), 7807 states have internal predecessors, (11416), 842 states have call successors, (842), 621 states have call predecessors, (842), 620 states have return successors, (840), 812 states have call predecessors, (840), 840 states have call successors, (840) [2021-11-25 20:26:42,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9240 states to 9240 states and 13098 transitions. [2021-11-25 20:26:42,636 INFO L78 Accepts]: Start accepts. Automaton has 9240 states and 13098 transitions. Word has length 113 [2021-11-25 20:26:42,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:26:42,637 INFO L470 AbstractCegarLoop]: Abstraction has 9240 states and 13098 transitions. [2021-11-25 20:26:42,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.4) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-25 20:26:42,638 INFO L276 IsEmpty]: Start isEmpty. Operand 9240 states and 13098 transitions. [2021-11-25 20:26:42,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-25 20:26:42,659 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:26:42,660 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:26:42,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-25 20:26:42,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:26:42,873 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:26:42,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:26:42,874 INFO L85 PathProgramCache]: Analyzing trace with hash -875622609, now seen corresponding path program 1 times [2021-11-25 20:26:42,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:26:42,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024788173] [2021-11-25 20:26:42,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:26:42,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:26:42,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:26:42,975 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-25 20:26:42,975 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:26:42,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024788173] [2021-11-25 20:26:42,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024788173] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:26:42,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511984627] [2021-11-25 20:26:42,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:26:42,977 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:26:42,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:26:42,978 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:26:42,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-25 20:26:43,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:26:43,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 20:26:43,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:26:43,387 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-25 20:26:43,387 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:26:43,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511984627] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:26:43,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:26:43,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2021-11-25 20:26:43,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945274553] [2021-11-25 20:26:43,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:26:43,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:26:43,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:26:43,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:26:43,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:26:43,390 INFO L87 Difference]: Start difference. First operand 9240 states and 13098 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-25 20:26:44,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:26:44,252 INFO L93 Difference]: Finished difference Result 12457 states and 17284 transitions. [2021-11-25 20:26:44,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:26:44,253 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 117 [2021-11-25 20:26:44,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:26:44,291 INFO L225 Difference]: With dead ends: 12457 [2021-11-25 20:26:44,292 INFO L226 Difference]: Without dead ends: 9712 [2021-11-25 20:26:44,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:26:44,303 INFO L933 BasicCegarLoop]: 3234 mSDtfsCounter, 3381 mSDsluCounter, 3578 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3381 SdHoareTripleChecker+Valid, 6557 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:26:44,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3381 Valid, 6557 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 20:26:44,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9712 states. [2021-11-25 20:26:44,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9712 to 9482. [2021-11-25 20:26:44,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9482 states, 7971 states have (on average 1.4629281144147535) internal successors, (11661), 8020 states have internal predecessors, (11661), 849 states have call successors, (849), 625 states have call predecessors, (849), 660 states have return successors, (883), 837 states have call predecessors, (883), 847 states have call successors, (883) [2021-11-25 20:26:44,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9482 states to 9482 states and 13393 transitions. [2021-11-25 20:26:44,750 INFO L78 Accepts]: Start accepts. Automaton has 9482 states and 13393 transitions. Word has length 117 [2021-11-25 20:26:44,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:26:44,751 INFO L470 AbstractCegarLoop]: Abstraction has 9482 states and 13393 transitions. [2021-11-25 20:26:44,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-25 20:26:44,751 INFO L276 IsEmpty]: Start isEmpty. Operand 9482 states and 13393 transitions. [2021-11-25 20:26:44,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-25 20:26:44,765 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:26:44,765 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:26:44,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-25 20:26:44,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-25 20:26:44,984 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:26:44,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:26:44,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1603065572, now seen corresponding path program 1 times [2021-11-25 20:26:44,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:26:44,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028593024] [2021-11-25 20:26:44,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:26:44,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:26:45,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:26:45,040 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 28 proven. 11 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-25 20:26:45,040 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:26:45,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028593024] [2021-11-25 20:26:45,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028593024] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:26:45,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162195015] [2021-11-25 20:26:45,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:26:45,041 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:26:45,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:26:45,042 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:26:45,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-25 20:26:45,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:26:45,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:26:45,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:26:45,356 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-25 20:26:45,356 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:26:45,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162195015] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:26:45,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:26:45,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2021-11-25 20:26:45,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189509257] [2021-11-25 20:26:45,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:26:45,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:26:45,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:26:45,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:26:45,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:26:45,358 INFO L87 Difference]: Start difference. First operand 9482 states and 13393 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-25 20:26:46,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:26:46,037 INFO L93 Difference]: Finished difference Result 12293 states and 17122 transitions. [2021-11-25 20:26:46,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:26:46,038 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 118 [2021-11-25 20:26:46,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:26:46,070 INFO L225 Difference]: With dead ends: 12293 [2021-11-25 20:26:46,070 INFO L226 Difference]: Without dead ends: 9224 [2021-11-25 20:26:46,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:26:46,083 INFO L933 BasicCegarLoop]: 3176 mSDtfsCounter, 22 mSDsluCounter, 3388 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 6335 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:26:46,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 6335 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 20:26:46,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9224 states. [2021-11-25 20:26:46,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9224 to 8786. [2021-11-25 20:26:46,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8786 states, 7383 states have (on average 1.4758228362454286) internal successors, (10896), 7405 states have internal predecessors, (10896), 813 states have call successors, (813), 589 states have call predecessors, (813), 588 states have return successors, (811), 792 states have call predecessors, (811), 811 states have call successors, (811) [2021-11-25 20:26:46,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8786 states to 8786 states and 12520 transitions. [2021-11-25 20:26:46,783 INFO L78 Accepts]: Start accepts. Automaton has 8786 states and 12520 transitions. Word has length 118 [2021-11-25 20:26:46,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:26:46,783 INFO L470 AbstractCegarLoop]: Abstraction has 8786 states and 12520 transitions. [2021-11-25 20:26:46,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-25 20:26:46,784 INFO L276 IsEmpty]: Start isEmpty. Operand 8786 states and 12520 transitions. [2021-11-25 20:26:46,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-25 20:26:46,798 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:26:46,798 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:26:46,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-25 20:26:47,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-25 20:26:47,013 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:26:47,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:26:47,013 INFO L85 PathProgramCache]: Analyzing trace with hash 161195677, now seen corresponding path program 1 times [2021-11-25 20:26:47,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:26:47,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678125971] [2021-11-25 20:26:47,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:26:47,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:26:47,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:26:47,094 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 31 proven. 11 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-25 20:26:47,094 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:26:47,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678125971] [2021-11-25 20:26:47,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678125971] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:26:47,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704185297] [2021-11-25 20:26:47,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:26:47,095 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:26:47,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:26:47,096 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:26:47,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-25 20:26:47,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:26:47,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 20:26:47,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:26:47,483 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-25 20:26:47,483 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:26:47,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704185297] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:26:47,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:26:47,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6 [2021-11-25 20:26:47,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795381272] [2021-11-25 20:26:47,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:26:47,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:26:47,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:26:47,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:26:47,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:26:47,486 INFO L87 Difference]: Start difference. First operand 8786 states and 12520 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-25 20:26:48,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:26:48,288 INFO L93 Difference]: Finished difference Result 14823 states and 20438 transitions. [2021-11-25 20:26:48,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:26:48,288 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 118 [2021-11-25 20:26:48,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:26:48,323 INFO L225 Difference]: With dead ends: 14823 [2021-11-25 20:26:48,323 INFO L226 Difference]: Without dead ends: 9813 [2021-11-25 20:26:48,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:26:48,340 INFO L933 BasicCegarLoop]: 3183 mSDtfsCounter, 3352 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3352 SdHoareTripleChecker+Valid, 3214 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:26:48,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3352 Valid, 3214 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 20:26:48,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9813 states. [2021-11-25 20:26:48,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9813 to 9721. [2021-11-25 20:26:48,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9721 states, 8243 states have (on average 1.4396457600388208) internal successors, (11867), 8265 states have internal predecessors, (11867), 823 states have call successors, (823), 654 states have call predecessors, (823), 653 states have return successors, (877), 802 states have call predecessors, (877), 821 states have call successors, (877) [2021-11-25 20:26:48,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9721 states to 9721 states and 13567 transitions. [2021-11-25 20:26:48,801 INFO L78 Accepts]: Start accepts. Automaton has 9721 states and 13567 transitions. Word has length 118 [2021-11-25 20:26:48,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:26:48,801 INFO L470 AbstractCegarLoop]: Abstraction has 9721 states and 13567 transitions. [2021-11-25 20:26:48,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-25 20:26:48,802 INFO L276 IsEmpty]: Start isEmpty. Operand 9721 states and 13567 transitions. [2021-11-25 20:26:48,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-25 20:26:48,820 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:26:48,820 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-25 20:26:48,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-25 20:26:49,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:26:49,049 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:26:49,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:26:49,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1513861507, now seen corresponding path program 1 times [2021-11-25 20:26:49,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:26:49,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092646811] [2021-11-25 20:26:49,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:26:49,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:26:49,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:26:49,109 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 30 proven. 5 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-25 20:26:49,110 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:26:49,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092646811] [2021-11-25 20:26:49,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092646811] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:26:49,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460377812] [2021-11-25 20:26:49,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:26:49,111 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:26:49,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:26:49,112 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:26:49,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-25 20:26:49,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:26:49,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:26:49,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:26:49,423 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-25 20:26:49,423 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:26:49,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460377812] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:26:49,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:26:49,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2021-11-25 20:26:49,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491310100] [2021-11-25 20:26:49,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:26:49,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:26:49,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:26:49,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:26:49,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:26:49,425 INFO L87 Difference]: Start difference. First operand 9721 states and 13567 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-25 20:26:50,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:26:50,295 INFO L93 Difference]: Finished difference Result 15347 states and 21023 transitions. [2021-11-25 20:26:50,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:26:50,296 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 118 [2021-11-25 20:26:50,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:26:50,329 INFO L225 Difference]: With dead ends: 15347 [2021-11-25 20:26:50,329 INFO L226 Difference]: Without dead ends: 9707 [2021-11-25 20:26:50,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:26:50,347 INFO L933 BasicCegarLoop]: 3241 mSDtfsCounter, 94 mSDsluCounter, 3384 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 6394 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:26:50,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 6394 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 20:26:50,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9707 states. [2021-11-25 20:26:50,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9707 to 9593. [2021-11-25 20:26:50,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9593 states, 8115 states have (on average 1.418977202711029) internal successors, (11515), 8137 states have internal predecessors, (11515), 823 states have call successors, (823), 654 states have call predecessors, (823), 653 states have return successors, (877), 802 states have call predecessors, (877), 821 states have call successors, (877) [2021-11-25 20:26:51,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9593 states to 9593 states and 13215 transitions. [2021-11-25 20:26:51,048 INFO L78 Accepts]: Start accepts. Automaton has 9593 states and 13215 transitions. Word has length 118 [2021-11-25 20:26:51,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:26:51,048 INFO L470 AbstractCegarLoop]: Abstraction has 9593 states and 13215 transitions. [2021-11-25 20:26:51,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-25 20:26:51,049 INFO L276 IsEmpty]: Start isEmpty. Operand 9593 states and 13215 transitions. [2021-11-25 20:26:51,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-25 20:26:51,067 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:26:51,067 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:26:51,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-25 20:26:51,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-25 20:26:51,293 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:26:51,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:26:51,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1341455148, now seen corresponding path program 1 times [2021-11-25 20:26:51,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:26:51,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963368759] [2021-11-25 20:26:51,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:26:51,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:26:51,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:26:51,392 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 26 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-25 20:26:51,393 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:26:51,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963368759] [2021-11-25 20:26:51,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963368759] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:26:51,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628402704] [2021-11-25 20:26:51,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:26:51,394 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:26:51,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:26:51,395 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:26:51,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-25 20:26:51,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:26:51,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 596 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-25 20:26:51,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:26:52,018 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 43 proven. 15 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-25 20:26:52,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:26:52,437 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-25 20:26:52,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628402704] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-25 20:26:52,437 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-25 20:26:52,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 8] total 13 [2021-11-25 20:26:52,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341684038] [2021-11-25 20:26:52,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:26:52,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:26:52,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:26:52,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:26:52,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-25 20:26:52,442 INFO L87 Difference]: Start difference. First operand 9593 states and 13215 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-25 20:26:53,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:26:53,362 INFO L93 Difference]: Finished difference Result 14593 states and 19514 transitions. [2021-11-25 20:26:53,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:26:53,362 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 115 [2021-11-25 20:26:53,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:26:53,384 INFO L225 Difference]: With dead ends: 14593 [2021-11-25 20:26:53,385 INFO L226 Difference]: Without dead ends: 10549 [2021-11-25 20:26:53,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-25 20:26:53,399 INFO L933 BasicCegarLoop]: 3203 mSDtfsCounter, 3377 mSDsluCounter, 3431 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3377 SdHoareTripleChecker+Valid, 6393 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:26:53,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3377 Valid, 6393 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 20:26:53,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10549 states. [2021-11-25 20:26:54,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10549 to 10336. [2021-11-25 20:26:54,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10336 states, 8810 states have (on average 1.3917139614074916) internal successors, (12261), 8832 states have internal predecessors, (12261), 829 states have call successors, (829), 696 states have call predecessors, (829), 695 states have return successors, (879), 808 states have call predecessors, (879), 827 states have call successors, (879) [2021-11-25 20:26:54,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10336 states to 10336 states and 13969 transitions. [2021-11-25 20:26:54,213 INFO L78 Accepts]: Start accepts. Automaton has 10336 states and 13969 transitions. Word has length 115 [2021-11-25 20:26:54,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:26:54,214 INFO L470 AbstractCegarLoop]: Abstraction has 10336 states and 13969 transitions. [2021-11-25 20:26:54,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-25 20:26:54,214 INFO L276 IsEmpty]: Start isEmpty. Operand 10336 states and 13969 transitions. [2021-11-25 20:26:54,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-25 20:26:54,223 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:26:54,223 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-25 20:26:54,270 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-11-25 20:26:54,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:26:54,437 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:26:54,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:26:54,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1506815488, now seen corresponding path program 1 times [2021-11-25 20:26:54,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:26:54,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494621362] [2021-11-25 20:26:54,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:26:54,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:26:54,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:26:54,523 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-25 20:26:54,523 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:26:54,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494621362] [2021-11-25 20:26:54,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494621362] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:26:54,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:26:54,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:26:54,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887261652] [2021-11-25 20:26:54,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:26:54,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:26:54,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:26:54,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:26:54,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:26:54,526 INFO L87 Difference]: Start difference. First operand 10336 states and 13969 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-25 20:26:55,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:26:55,785 INFO L93 Difference]: Finished difference Result 18018 states and 23459 transitions. [2021-11-25 20:26:55,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 20:26:55,785 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 116 [2021-11-25 20:26:55,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:26:55,821 INFO L225 Difference]: With dead ends: 18018 [2021-11-25 20:26:55,821 INFO L226 Difference]: Without dead ends: 13546 [2021-11-25 20:26:55,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:26:55,833 INFO L933 BasicCegarLoop]: 3221 mSDtfsCounter, 95 mSDsluCounter, 10136 mSDsCounter, 0 mSdLazyCounter, 1102 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 12659 SdHoareTripleChecker+Invalid, 1129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:26:55,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 12659 Invalid, 1129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1102 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 20:26:55,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13546 states. [2021-11-25 20:26:56,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13546 to 13066. [2021-11-25 20:26:56,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13066 states, 10962 states have (on average 1.353311439518336) internal successors, (14835), 11020 states have internal predecessors, (14835), 1145 states have call successors, (1145), 949 states have call predecessors, (1145), 957 states have return successors, (1275), 1097 states have call predecessors, (1275), 1143 states have call successors, (1275) [2021-11-25 20:26:56,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13066 states to 13066 states and 17255 transitions. [2021-11-25 20:26:56,648 INFO L78 Accepts]: Start accepts. Automaton has 13066 states and 17255 transitions. Word has length 116 [2021-11-25 20:26:56,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:26:56,649 INFO L470 AbstractCegarLoop]: Abstraction has 13066 states and 17255 transitions. [2021-11-25 20:26:56,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-25 20:26:56,649 INFO L276 IsEmpty]: Start isEmpty. Operand 13066 states and 17255 transitions. [2021-11-25 20:26:56,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-25 20:26:56,658 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:26:56,658 INFO L514 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:26:56,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-25 20:26:56,659 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:26:56,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:26:56,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1419528625, now seen corresponding path program 1 times [2021-11-25 20:26:56,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:26:56,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079584386] [2021-11-25 20:26:56,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:26:56,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:26:56,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:26:56,825 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 13 proven. 43 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-25 20:26:56,825 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:26:56,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079584386] [2021-11-25 20:26:56,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079584386] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:26:56,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079895995] [2021-11-25 20:26:56,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:26:56,826 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:26:56,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:26:56,827 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:26:56,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-25 20:26:56,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:26:56,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-25 20:26:56,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:26:57,222 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 62 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 20:26:57,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:26:57,695 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-25 20:26:57,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079895995] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:26:57,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [885825024] [2021-11-25 20:26:57,722 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2021-11-25 20:26:57,722 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:26:57,728 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:26:57,734 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:26:57,734 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:27:10,806 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 75 for LOIs [2021-11-25 20:27:10,815 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 185 for LOIs [2021-11-25 20:28:00,675 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 147 for LOIs [2021-11-25 20:28:00,720 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 123 for LOIs [2021-11-25 20:28:00,743 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 71 for LOIs [2021-11-25 20:28:00,756 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 137 for LOIs [2021-11-25 20:28:00,908 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 125 for LOIs [2021-11-25 20:28:01,658 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:28:44,559 WARN L227 SmtUtils]: Spent 32.43s on a formula simplification. DAG size of input: 1255 DAG size of output: 848 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:29:01,461 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '388585#(and (= ~a15~0 1) (= 5 ~a20~0) (<= ~local~0 2147483647) (= ~t1_pc~0 0) (= ~t1_i~0 1) (= ~a25~0 1) (<= 0 (+ ~local~0 2147483648)) (= ~a~0 1) (= ~d~0 4) (= 0 ~t3_pc~0) (= ~a16~0 1) (= 5 ~e~0) (= ~m_pc~0 1) (= ~m_i~0 1) (= ~a12~0 4) (= ~a9~0 18) (not (= ~token~0 (+ 3 ~local~0))) (= 6 ~f~0) (= 3 ~c~0) (= ~t2_i~0 1) (= 2 ~b~0) (= 0 ~t2_pc~0) (= ~m_st~0 1) (= |#NULL.offset| 0) (<= ~token~0 2147483647) (= ~a27~0 1) (= ~t3_i~0 1) (<= 0 (+ ~token~0 2147483648)) (<= 0 |#StackHeapBarrier|) (= ~a2~0 10) (= |#NULL.base| 0))' at error location [2021-11-25 20:29:01,461 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:29:01,461 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 20:29:01,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 6] total 21 [2021-11-25 20:29:01,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120053010] [2021-11-25 20:29:01,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 20:29:01,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-25 20:29:01,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:29:01,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-25 20:29:01,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=477, Invalid=4779, Unknown=0, NotChecked=0, Total=5256 [2021-11-25 20:29:01,465 INFO L87 Difference]: Start difference. First operand 13066 states and 17255 transitions. Second operand has 21 states, 17 states have (on average 9.0) internal successors, (153), 19 states have internal predecessors, (153), 9 states have call successors, (34), 5 states have call predecessors, (34), 8 states have return successors, (34), 9 states have call predecessors, (34), 9 states have call successors, (34) [2021-11-25 20:29:06,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:29:06,085 INFO L93 Difference]: Finished difference Result 25167 states and 32905 transitions. [2021-11-25 20:29:06,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-11-25 20:29:06,085 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 9.0) internal successors, (153), 19 states have internal predecessors, (153), 9 states have call successors, (34), 5 states have call predecessors, (34), 8 states have return successors, (34), 9 states have call predecessors, (34), 9 states have call successors, (34) Word has length 121 [2021-11-25 20:29:06,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:29:06,115 INFO L225 Difference]: With dead ends: 25167 [2021-11-25 20:29:06,116 INFO L226 Difference]: Without dead ends: 13716 [2021-11-25 20:29:06,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 331 SyntacticMatches, 21 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10388 ImplicationChecksByTransitivity, 61.3s TimeCoverageRelationStatistics Valid=1580, Invalid=21070, Unknown=0, NotChecked=0, Total=22650 [2021-11-25 20:29:06,148 INFO L933 BasicCegarLoop]: 3416 mSDtfsCounter, 11606 mSDsluCounter, 32723 mSDsCounter, 0 mSdLazyCounter, 4906 mSolverCounterSat, 650 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11612 SdHoareTripleChecker+Valid, 33734 SdHoareTripleChecker+Invalid, 5556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 650 IncrementalHoareTripleChecker+Valid, 4906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:29:06,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11612 Valid, 33734 Invalid, 5556 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [650 Valid, 4906 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-25 20:29:06,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13716 states. [2021-11-25 20:29:06,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13716 to 9720. [2021-11-25 20:29:06,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9720 states, 8302 states have (on average 1.3986991086485183) internal successors, (11612), 8327 states have internal predecessors, (11612), 748 states have call successors, (748), 666 states have call predecessors, (748), 668 states have return successors, (794), 726 states have call predecessors, (794), 746 states have call successors, (794) [2021-11-25 20:29:06,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9720 states to 9720 states and 13154 transitions. [2021-11-25 20:29:06,738 INFO L78 Accepts]: Start accepts. Automaton has 9720 states and 13154 transitions. Word has length 121 [2021-11-25 20:29:06,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:29:06,738 INFO L470 AbstractCegarLoop]: Abstraction has 9720 states and 13154 transitions. [2021-11-25 20:29:06,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 9.0) internal successors, (153), 19 states have internal predecessors, (153), 9 states have call successors, (34), 5 states have call predecessors, (34), 8 states have return successors, (34), 9 states have call predecessors, (34), 9 states have call successors, (34) [2021-11-25 20:29:06,739 INFO L276 IsEmpty]: Start isEmpty. Operand 9720 states and 13154 transitions. [2021-11-25 20:29:06,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-25 20:29:06,744 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:29:06,744 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-25 20:29:06,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-25 20:29:06,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:29:06,945 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:29:06,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:29:06,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1591103952, now seen corresponding path program 1 times [2021-11-25 20:29:06,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:29:06,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776668331] [2021-11-25 20:29:06,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:29:06,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:29:06,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:29:07,030 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 41 proven. 17 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-25 20:29:07,030 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:29:07,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776668331] [2021-11-25 20:29:07,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776668331] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:29:07,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013694552] [2021-11-25 20:29:07,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:29:07,032 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:29:07,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:29:07,033 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:29:07,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-25 20:29:07,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:29:07,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-25 20:29:07,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:29:07,419 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:29:07,419 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:29:07,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013694552] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:29:07,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:29:07,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 6 [2021-11-25 20:29:07,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627223921] [2021-11-25 20:29:07,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:29:07,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 20:29:07,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:29:07,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 20:29:07,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:29:07,421 INFO L87 Difference]: Start difference. First operand 9720 states and 13154 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 5 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2021-11-25 20:29:08,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:29:08,761 INFO L93 Difference]: Finished difference Result 16949 states and 22056 transitions. [2021-11-25 20:29:08,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 20:29:08,762 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 5 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 117 [2021-11-25 20:29:08,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:29:08,785 INFO L225 Difference]: With dead ends: 16949 [2021-11-25 20:29:08,786 INFO L226 Difference]: Without dead ends: 11638 [2021-11-25 20:29:08,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-25 20:29:08,794 INFO L933 BasicCegarLoop]: 3225 mSDtfsCounter, 216 mSDsluCounter, 13409 mSDsCounter, 0 mSdLazyCounter, 1328 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 15725 SdHoareTripleChecker+Invalid, 1390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:29:08,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 15725 Invalid, 1390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1328 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 20:29:08,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11638 states. [2021-11-25 20:29:09,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11638 to 10635. [2021-11-25 20:29:09,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10635 states, 9008 states have (on average 1.3769982238010656) internal successors, (12404), 9047 states have internal predecessors, (12404), 862 states have call successors, (862), 753 states have call predecessors, (862), 763 states have return successors, (964), 834 states have call predecessors, (964), 860 states have call successors, (964) [2021-11-25 20:29:09,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10635 states to 10635 states and 14230 transitions. [2021-11-25 20:29:09,422 INFO L78 Accepts]: Start accepts. Automaton has 10635 states and 14230 transitions. Word has length 117 [2021-11-25 20:29:09,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:29:09,423 INFO L470 AbstractCegarLoop]: Abstraction has 10635 states and 14230 transitions. [2021-11-25 20:29:09,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 5 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2021-11-25 20:29:09,424 INFO L276 IsEmpty]: Start isEmpty. Operand 10635 states and 14230 transitions. [2021-11-25 20:29:09,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-25 20:29:09,431 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:29:09,431 INFO L514 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:29:09,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-25 20:29:09,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-11-25 20:29:09,637 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:29:09,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:29:09,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1937175792, now seen corresponding path program 1 times [2021-11-25 20:29:09,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:29:09,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137102336] [2021-11-25 20:29:09,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:29:09,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:29:09,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:29:09,734 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 17 proven. 26 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-25 20:29:09,735 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:29:09,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137102336] [2021-11-25 20:29:09,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137102336] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:29:09,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712582895] [2021-11-25 20:29:09,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:29:09,736 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:29:09,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:29:09,737 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:29:09,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-25 20:29:09,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:29:09,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-25 20:29:09,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:29:10,235 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 62 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 20:29:10,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:29:10,738 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-25 20:29:10,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712582895] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:29:10,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [692197477] [2021-11-25 20:29:10,747 INFO L159 IcfgInterpreter]: Started Sifa with 72 locations of interest [2021-11-25 20:29:10,747 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:29:10,748 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:29:10,749 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:29:10,749 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:29:20,950 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 76 for LOIs [2021-11-25 20:29:20,958 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 185 for LOIs [2021-11-25 20:29:29,107 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 147 for LOIs [2021-11-25 20:29:29,150 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 123 for LOIs [2021-11-25 20:29:29,173 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 123 for LOIs [2021-11-25 20:29:29,204 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 132 for LOIs [2021-11-25 20:29:29,419 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 120 for LOIs [2021-11-25 20:29:29,797 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:29:41,812 WARN L227 SmtUtils]: Spent 6.78s on a formula simplification. DAG size of input: 409 DAG size of output: 278 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:29:59,023 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '472956#(and (= ~a15~0 1) (<= ~t1_pc~0 1) (= 5 ~a20~0) (<= ~local~0 2147483647) (= ~t1_i~0 1) (= ~a25~0 1) (<= 0 (+ ~local~0 2147483648)) (= ~a~0 1) (= ~d~0 4) (= 0 ~t3_pc~0) (= ~a16~0 1) (= 5 ~e~0) (= ~m_pc~0 1) (= ~m_i~0 1) (= ~a12~0 4) (= ~a9~0 18) (not (= ~token~0 (+ 3 ~local~0))) (= 6 ~f~0) (= 3 ~c~0) (= ~t2_i~0 1) (= 2 ~b~0) (= 0 ~t2_pc~0) (= ~m_st~0 1) (= |#NULL.offset| 0) (<= ~token~0 2147483647) (= ~a27~0 1) (= ~t3_i~0 1) (<= 0 (+ ~token~0 2147483648)) (<= 0 |#StackHeapBarrier|) (= ~a2~0 10) (<= 0 ~t1_pc~0) (= |#NULL.base| 0))' at error location [2021-11-25 20:29:59,024 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:29:59,024 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 20:29:59,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 6] total 17 [2021-11-25 20:29:59,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828028680] [2021-11-25 20:29:59,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 20:29:59,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-25 20:29:59,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:29:59,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-25 20:29:59,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=447, Invalid=4665, Unknown=0, NotChecked=0, Total=5112 [2021-11-25 20:29:59,028 INFO L87 Difference]: Start difference. First operand 10635 states and 14230 transitions. Second operand has 17 states, 14 states have (on average 9.642857142857142) internal successors, (135), 15 states have internal predecessors, (135), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) [2021-11-25 20:30:07,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:30:07,253 INFO L93 Difference]: Finished difference Result 23688 states and 31652 transitions. [2021-11-25 20:30:07,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2021-11-25 20:30:07,253 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 9.642857142857142) internal successors, (135), 15 states have internal predecessors, (135), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) Word has length 124 [2021-11-25 20:30:07,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:30:07,287 INFO L225 Difference]: With dead ends: 23688 [2021-11-25 20:30:07,287 INFO L226 Difference]: Without dead ends: 15597 [2021-11-25 20:30:07,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 660 GetRequests, 397 SyntacticMatches, 15 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28022 ImplicationChecksByTransitivity, 33.1s TimeCoverageRelationStatistics Valid=4561, Invalid=57689, Unknown=0, NotChecked=0, Total=62250 [2021-11-25 20:30:07,317 INFO L933 BasicCegarLoop]: 3725 mSDtfsCounter, 18665 mSDsluCounter, 31823 mSDsCounter, 0 mSdLazyCounter, 5660 mSolverCounterSat, 1014 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18674 SdHoareTripleChecker+Valid, 33067 SdHoareTripleChecker+Invalid, 6674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1014 IncrementalHoareTripleChecker+Valid, 5660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:30:07,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18674 Valid, 33067 Invalid, 6674 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1014 Valid, 5660 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-11-25 20:30:07,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15597 states. [2021-11-25 20:30:08,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15597 to 8079. [2021-11-25 20:30:08,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8079 states, 6978 states have (on average 1.420464316423044) internal successors, (9912), 6995 states have internal predecessors, (9912), 566 states have call successors, (566), 529 states have call predecessors, (566), 533 states have return successors, (628), 554 states have call predecessors, (628), 564 states have call successors, (628) [2021-11-25 20:30:08,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8079 states to 8079 states and 11106 transitions. [2021-11-25 20:30:08,037 INFO L78 Accepts]: Start accepts. Automaton has 8079 states and 11106 transitions. Word has length 124 [2021-11-25 20:30:08,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:30:08,038 INFO L470 AbstractCegarLoop]: Abstraction has 8079 states and 11106 transitions. [2021-11-25 20:30:08,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 9.642857142857142) internal successors, (135), 15 states have internal predecessors, (135), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) [2021-11-25 20:30:08,038 INFO L276 IsEmpty]: Start isEmpty. Operand 8079 states and 11106 transitions. [2021-11-25 20:30:08,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-25 20:30:08,043 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:30:08,044 INFO L514 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:30:08,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-25 20:30:08,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-25 20:30:08,249 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:30:08,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:30:08,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1480969903, now seen corresponding path program 1 times [2021-11-25 20:30:08,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:30:08,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688851179] [2021-11-25 20:30:08,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:30:08,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:30:08,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:30:08,356 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 17 proven. 25 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-11-25 20:30:08,356 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:30:08,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688851179] [2021-11-25 20:30:08,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688851179] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:30:08,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29720503] [2021-11-25 20:30:08,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:30:08,358 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:30:08,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:30:08,359 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:30:08,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-25 20:30:08,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:30:08,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 668 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-25 20:30:08,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:30:08,909 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 60 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 20:30:08,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:30:09,349 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-25 20:30:09,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29720503] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:30:09,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1060529246] [2021-11-25 20:30:09,353 INFO L159 IcfgInterpreter]: Started Sifa with 75 locations of interest [2021-11-25 20:30:09,353 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:30:09,354 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:30:09,354 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:30:09,354 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:30:17,291 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 77 for LOIs [2021-11-25 20:30:17,299 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 185 for LOIs [2021-11-25 20:30:29,809 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 147 for LOIs [2021-11-25 20:30:29,861 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 123 for LOIs [2021-11-25 20:30:29,883 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 73 for LOIs [2021-11-25 20:30:29,895 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 85 for LOIs [2021-11-25 20:30:30,018 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 123 for LOIs [2021-11-25 20:30:30,559 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:30:47,477 WARN L227 SmtUtils]: Spent 10.09s on a formula simplification. DAG size of input: 495 DAG size of output: 330 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:31:02,512 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '516572#(and (= ~a15~0 1) (<= ~t1_pc~0 1) (= 5 ~a20~0) (<= ~local~0 2147483647) (= ~t1_i~0 1) (= ~a25~0 1) (<= 0 (+ ~local~0 2147483648)) (<= 0 ~t2_pc~0) (= ~a~0 1) (= ~d~0 4) (= 0 ~t3_pc~0) (= ~a16~0 1) (= 5 ~e~0) (= ~m_pc~0 1) (<= ~t2_pc~0 1) (= ~m_i~0 1) (= ~a12~0 4) (= ~a9~0 18) (not (= ~token~0 (+ 3 ~local~0))) (= 6 ~f~0) (= 3 ~c~0) (= ~t2_i~0 1) (= 2 ~b~0) (= ~m_st~0 1) (= |#NULL.offset| 0) (<= ~token~0 2147483647) (= ~a27~0 1) (= ~t3_i~0 1) (<= 0 (+ ~token~0 2147483648)) (<= 0 |#StackHeapBarrier|) (= ~a2~0 10) (<= 0 ~t1_pc~0) (= |#NULL.base| 0))' at error location [2021-11-25 20:31:02,512 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:31:02,512 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 20:31:02,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 6] total 18 [2021-11-25 20:31:02,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860340682] [2021-11-25 20:31:02,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 20:31:02,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-25 20:31:02,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:31:02,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-25 20:31:02,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=492, Invalid=5208, Unknown=0, NotChecked=0, Total=5700 [2021-11-25 20:31:02,515 INFO L87 Difference]: Start difference. First operand 8079 states and 11106 transitions. Second operand has 18 states, 15 states have (on average 9.266666666666667) internal successors, (139), 16 states have internal predecessors, (139), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) [2021-11-25 20:31:09,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:31:09,874 INFO L93 Difference]: Finished difference Result 15486 states and 20650 transitions. [2021-11-25 20:31:09,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2021-11-25 20:31:09,875 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 9.266666666666667) internal successors, (139), 16 states have internal predecessors, (139), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) Word has length 126 [2021-11-25 20:31:09,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:31:09,896 INFO L225 Difference]: With dead ends: 15486 [2021-11-25 20:31:09,896 INFO L226 Difference]: Without dead ends: 10199 [2021-11-25 20:31:09,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 625 GetRequests, 376 SyntacticMatches, 14 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25077 ImplicationChecksByTransitivity, 35.4s TimeCoverageRelationStatistics Valid=3993, Invalid=51939, Unknown=0, NotChecked=0, Total=55932 [2021-11-25 20:31:09,918 INFO L933 BasicCegarLoop]: 3641 mSDtfsCounter, 11505 mSDsluCounter, 31644 mSDsCounter, 0 mSdLazyCounter, 6031 mSolverCounterSat, 627 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11513 SdHoareTripleChecker+Valid, 32835 SdHoareTripleChecker+Invalid, 6658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 627 IncrementalHoareTripleChecker+Valid, 6031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:31:09,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11513 Valid, 32835 Invalid, 6658 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [627 Valid, 6031 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-25 20:31:09,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10199 states. [2021-11-25 20:31:10,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10199 to 6838. [2021-11-25 20:31:10,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6838 states, 5955 states have (on average 1.4408060453400504) internal successors, (8580), 5970 states have internal predecessors, (8580), 447 states have call successors, (447), 428 states have call predecessors, (447), 434 states have return successors, (503), 439 states have call predecessors, (503), 445 states have call successors, (503) [2021-11-25 20:31:10,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6838 states to 6838 states and 9530 transitions. [2021-11-25 20:31:10,493 INFO L78 Accepts]: Start accepts. Automaton has 6838 states and 9530 transitions. Word has length 126 [2021-11-25 20:31:10,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:31:10,494 INFO L470 AbstractCegarLoop]: Abstraction has 6838 states and 9530 transitions. [2021-11-25 20:31:10,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 9.266666666666667) internal successors, (139), 16 states have internal predecessors, (139), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) [2021-11-25 20:31:10,494 INFO L276 IsEmpty]: Start isEmpty. Operand 6838 states and 9530 transitions. [2021-11-25 20:31:10,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-25 20:31:10,500 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:31:10,500 INFO L514 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:31:10,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-25 20:31:10,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-11-25 20:31:10,713 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:31:10,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:31:10,713 INFO L85 PathProgramCache]: Analyzing trace with hash -732874593, now seen corresponding path program 1 times [2021-11-25 20:31:10,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:31:10,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622864413] [2021-11-25 20:31:10,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:31:10,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:31:10,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:31:10,993 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 23 proven. 31 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-25 20:31:10,994 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:31:10,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622864413] [2021-11-25 20:31:10,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622864413] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:31:10,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873504168] [2021-11-25 20:31:10,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:31:10,995 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:31:10,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:31:10,996 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:31:11,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-25 20:31:11,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:31:11,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-25 20:31:11,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:31:11,603 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 56 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-25 20:31:11,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:31:12,494 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-11-25 20:31:12,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873504168] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:31:12,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1822641675] [2021-11-25 20:31:12,498 INFO L159 IcfgInterpreter]: Started Sifa with 78 locations of interest [2021-11-25 20:31:12,498 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:31:12,499 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:31:12,499 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:31:12,499 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:31:31,679 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 78 for LOIs [2021-11-25 20:31:31,687 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 127 for LOIs [2021-11-25 20:31:31,741 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 240 for LOIs [2021-11-25 20:31:41,832 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 208 for LOIs [2021-11-25 20:31:41,907 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 123 for LOIs [2021-11-25 20:31:41,943 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 132 for LOIs [2021-11-25 20:31:42,432 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 121 for LOIs [2021-11-25 20:31:43,078 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:32:08,730 WARN L227 SmtUtils]: Spent 23.25s on a formula simplification. DAG size of input: 493 DAG size of output: 443 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:32:36,805 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '546879#(and (= ~a15~0 1) (<= ~t1_pc~0 1) (= 5 ~a20~0) (<= ~local~0 2147483647) (= ~t1_i~0 1) (= ~a25~0 1) (<= 0 (+ ~local~0 2147483648)) (<= 0 ~t2_pc~0) (= ~a~0 1) (= ~d~0 4) (= ~a16~0 1) (= 5 ~e~0) (= ~m_pc~0 1) (<= ~t2_pc~0 1) (= ~m_i~0 1) (= ~a12~0 4) (= ~a9~0 18) (not (= ~token~0 (+ 3 ~local~0))) (<= ~t3_pc~0 1) (= 6 ~f~0) (= 3 ~c~0) (= ~t2_i~0 1) (= 2 ~b~0) (= ~m_st~0 1) (= |#NULL.offset| 0) (<= ~token~0 2147483647) (= ~a27~0 1) (<= 0 ~t3_pc~0) (= ~t3_i~0 1) (<= 0 (+ ~token~0 2147483648)) (<= 0 |#StackHeapBarrier|) (= ~a2~0 10) (<= 0 ~t1_pc~0) (= |#NULL.base| 0))' at error location [2021-11-25 20:32:36,805 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:32:36,805 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 20:32:36,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 9, 12] total 36 [2021-11-25 20:32:36,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409274926] [2021-11-25 20:32:36,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 20:32:36,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-11-25 20:32:36,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:32:36,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-11-25 20:32:36,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=681, Invalid=8825, Unknown=0, NotChecked=0, Total=9506 [2021-11-25 20:32:36,807 INFO L87 Difference]: Start difference. First operand 6838 states and 9530 transitions. Second operand has 36 states, 24 states have (on average 8.416666666666666) internal successors, (202), 27 states have internal predecessors, (202), 14 states have call successors, (41), 11 states have call predecessors, (41), 18 states have return successors, (40), 14 states have call predecessors, (40), 14 states have call successors, (40) [2021-11-25 20:32:44,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:32:44,528 INFO L93 Difference]: Finished difference Result 15022 states and 19729 transitions. [2021-11-25 20:32:44,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-11-25 20:32:44,529 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 24 states have (on average 8.416666666666666) internal successors, (202), 27 states have internal predecessors, (202), 14 states have call successors, (41), 11 states have call predecessors, (41), 18 states have return successors, (40), 14 states have call predecessors, (40), 14 states have call successors, (40) Word has length 128 [2021-11-25 20:32:44,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:32:44,547 INFO L225 Difference]: With dead ends: 15022 [2021-11-25 20:32:44,547 INFO L226 Difference]: Without dead ends: 10709 [2021-11-25 20:32:44,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 310 SyntacticMatches, 16 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10405 ImplicationChecksByTransitivity, 56.9s TimeCoverageRelationStatistics Valid=2351, Invalid=22455, Unknown=0, NotChecked=0, Total=24806 [2021-11-25 20:32:44,560 INFO L933 BasicCegarLoop]: 3214 mSDtfsCounter, 30536 mSDsluCounter, 40399 mSDsCounter, 0 mSdLazyCounter, 6427 mSolverCounterSat, 2267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30536 SdHoareTripleChecker+Valid, 40837 SdHoareTripleChecker+Invalid, 8694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2267 IncrementalHoareTripleChecker+Valid, 6427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-25 20:32:44,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30536 Valid, 40837 Invalid, 8694 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2267 Valid, 6427 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-11-25 20:32:44,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10709 states. [2021-11-25 20:32:45,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10709 to 6549. [2021-11-25 20:32:45,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6549 states, 5717 states have (on average 1.4483120517754067) internal successors, (8280), 5730 states have internal predecessors, (8280), 427 states have call successors, (427), 404 states have call predecessors, (427), 403 states have return successors, (425), 414 states have call predecessors, (425), 425 states have call successors, (425) [2021-11-25 20:32:45,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6549 states to 6549 states and 9132 transitions. [2021-11-25 20:32:45,217 INFO L78 Accepts]: Start accepts. Automaton has 6549 states and 9132 transitions. Word has length 128 [2021-11-25 20:32:45,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:32:45,218 INFO L470 AbstractCegarLoop]: Abstraction has 6549 states and 9132 transitions. [2021-11-25 20:32:45,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 24 states have (on average 8.416666666666666) internal successors, (202), 27 states have internal predecessors, (202), 14 states have call successors, (41), 11 states have call predecessors, (41), 18 states have return successors, (40), 14 states have call predecessors, (40), 14 states have call successors, (40) [2021-11-25 20:32:45,218 INFO L276 IsEmpty]: Start isEmpty. Operand 6549 states and 9132 transitions. [2021-11-25 20:32:45,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-25 20:32:45,222 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:32:45,223 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:32:45,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-25 20:32:45,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-11-25 20:32:45,449 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:32:45,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:32:45,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1889767171, now seen corresponding path program 1 times [2021-11-25 20:32:45,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:32:45,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933823846] [2021-11-25 20:32:45,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:32:45,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:32:45,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:32:45,526 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 31 proven. 19 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-11-25 20:32:45,527 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:32:45,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933823846] [2021-11-25 20:32:45,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933823846] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:32:45,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135696121] [2021-11-25 20:32:45,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:32:45,528 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:32:45,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:32:45,529 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:32:45,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-25 20:32:45,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:32:45,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 707 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 20:32:45,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:32:45,913 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-25 20:32:45,913 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:32:45,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135696121] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:32:45,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:32:45,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6 [2021-11-25 20:32:45,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146976599] [2021-11-25 20:32:45,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:32:45,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:32:45,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:32:45,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:32:45,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:32:45,915 INFO L87 Difference]: Start difference. First operand 6549 states and 9132 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-25 20:32:46,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:32:46,568 INFO L93 Difference]: Finished difference Result 11165 states and 14746 transitions. [2021-11-25 20:32:46,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:32:46,569 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 142 [2021-11-25 20:32:46,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:32:46,581 INFO L225 Difference]: With dead ends: 11165 [2021-11-25 20:32:46,581 INFO L226 Difference]: Without dead ends: 6837 [2021-11-25 20:32:46,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:32:46,589 INFO L933 BasicCegarLoop]: 3182 mSDtfsCounter, 3353 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3353 SdHoareTripleChecker+Valid, 3211 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:32:46,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3353 Valid, 3211 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 20:32:46,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6837 states. [2021-11-25 20:32:47,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6837 to 6655. [2021-11-25 20:32:47,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6655 states, 5817 states have (on average 1.4321815368746778) internal successors, (8331), 5830 states have internal predecessors, (8331), 427 states have call successors, (427), 410 states have call predecessors, (427), 409 states have return successors, (435), 414 states have call predecessors, (435), 425 states have call successors, (435) [2021-11-25 20:32:47,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6655 states to 6655 states and 9193 transitions. [2021-11-25 20:32:47,207 INFO L78 Accepts]: Start accepts. Automaton has 6655 states and 9193 transitions. Word has length 142 [2021-11-25 20:32:47,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:32:47,207 INFO L470 AbstractCegarLoop]: Abstraction has 6655 states and 9193 transitions. [2021-11-25 20:32:47,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-25 20:32:47,208 INFO L276 IsEmpty]: Start isEmpty. Operand 6655 states and 9193 transitions. [2021-11-25 20:32:47,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-25 20:32:47,213 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:32:47,214 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-25 20:32:47,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-25 20:32:47,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:32:47,425 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:32:47,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:32:47,426 INFO L85 PathProgramCache]: Analyzing trace with hash -26514368, now seen corresponding path program 1 times [2021-11-25 20:32:47,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:32:47,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584425128] [2021-11-25 20:32:47,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:32:47,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:32:47,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:32:47,517 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 35 proven. 17 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2021-11-25 20:32:47,518 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:32:47,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584425128] [2021-11-25 20:32:47,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584425128] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:32:47,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361627794] [2021-11-25 20:32:47,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:32:47,519 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:32:47,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:32:47,521 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:32:47,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-25 20:32:47,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:32:47,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:32:47,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:32:48,002 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-25 20:32:48,002 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:32:48,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361627794] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:32:48,003 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:32:48,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2021-11-25 20:32:48,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661121501] [2021-11-25 20:32:48,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:32:48,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:32:48,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:32:48,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:32:48,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:32:48,005 INFO L87 Difference]: Start difference. First operand 6655 states and 9193 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-25 20:32:48,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:32:48,886 INFO L93 Difference]: Finished difference Result 10847 states and 14327 transitions. [2021-11-25 20:32:48,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:32:48,887 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 142 [2021-11-25 20:32:48,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:32:48,898 INFO L225 Difference]: With dead ends: 10847 [2021-11-25 20:32:48,898 INFO L226 Difference]: Without dead ends: 6410 [2021-11-25 20:32:48,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:32:48,908 INFO L933 BasicCegarLoop]: 3214 mSDtfsCounter, 93 mSDsluCounter, 3341 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 6329 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:32:48,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 6329 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 20:32:48,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6410 states. [2021-11-25 20:32:49,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6410 to 6334. [2021-11-25 20:32:49,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6334 states, 5534 states have (on average 1.4110950487893026) internal successors, (7809), 5547 states have internal predecessors, (7809), 408 states have call successors, (408), 391 states have call predecessors, (408), 390 states have return successors, (416), 395 states have call predecessors, (416), 406 states have call successors, (416) [2021-11-25 20:32:49,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6334 states to 6334 states and 8633 transitions. [2021-11-25 20:32:49,284 INFO L78 Accepts]: Start accepts. Automaton has 6334 states and 8633 transitions. Word has length 142 [2021-11-25 20:32:49,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:32:49,284 INFO L470 AbstractCegarLoop]: Abstraction has 6334 states and 8633 transitions. [2021-11-25 20:32:49,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-25 20:32:49,284 INFO L276 IsEmpty]: Start isEmpty. Operand 6334 states and 8633 transitions. [2021-11-25 20:32:49,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-25 20:32:49,287 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:32:49,287 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-25 20:32:49,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-25 20:32:49,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-11-25 20:32:49,488 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:32:49,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:32:49,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1840909153, now seen corresponding path program 1 times [2021-11-25 20:32:49,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:32:49,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208468055] [2021-11-25 20:32:49,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:32:49,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:32:49,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:32:49,559 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 43 proven. 36 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-11-25 20:32:49,560 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:32:49,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208468055] [2021-11-25 20:32:49,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208468055] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:32:49,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602921565] [2021-11-25 20:32:49,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:32:49,561 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:32:49,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:32:49,562 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:32:49,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-25 20:32:49,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:32:49,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 704 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-25 20:32:49,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:32:49,964 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 20:32:49,964 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:32:49,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602921565] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:32:49,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:32:49,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 6 [2021-11-25 20:32:49,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603307060] [2021-11-25 20:32:49,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:32:49,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 20:32:49,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:32:49,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 20:32:49,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:32:49,967 INFO L87 Difference]: Start difference. First operand 6334 states and 8633 transitions. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 5 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2021-11-25 20:32:51,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:32:51,109 INFO L93 Difference]: Finished difference Result 11273 states and 14321 transitions. [2021-11-25 20:32:51,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 20:32:51,110 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 5 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 145 [2021-11-25 20:32:51,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:32:51,121 INFO L225 Difference]: With dead ends: 11273 [2021-11-25 20:32:51,121 INFO L226 Difference]: Without dead ends: 7253 [2021-11-25 20:32:51,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-25 20:32:51,127 INFO L933 BasicCegarLoop]: 3214 mSDtfsCounter, 232 mSDsluCounter, 10029 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 12569 SdHoareTripleChecker+Invalid, 1122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:32:51,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 12569 Invalid, 1122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 20:32:51,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7253 states. [2021-11-25 20:32:51,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7253 to 6800. [2021-11-25 20:32:51,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6800 states, 5874 states have (on average 1.3859380320054477) internal successors, (8141), 5894 states have internal predecessors, (8141), 474 states have call successors, (474), 441 states have call predecessors, (474), 450 states have return successors, (522), 464 states have call predecessors, (522), 472 states have call successors, (522) [2021-11-25 20:32:51,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6800 states to 6800 states and 9137 transitions. [2021-11-25 20:32:51,578 INFO L78 Accepts]: Start accepts. Automaton has 6800 states and 9137 transitions. Word has length 145 [2021-11-25 20:32:51,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:32:51,579 INFO L470 AbstractCegarLoop]: Abstraction has 6800 states and 9137 transitions. [2021-11-25 20:32:51,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 5 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2021-11-25 20:32:51,579 INFO L276 IsEmpty]: Start isEmpty. Operand 6800 states and 9137 transitions. [2021-11-25 20:32:51,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-11-25 20:32:51,585 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:32:51,585 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:32:51,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-25 20:32:51,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-25 20:32:51,793 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:32:51,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:32:51,793 INFO L85 PathProgramCache]: Analyzing trace with hash 381698978, now seen corresponding path program 1 times [2021-11-25 20:32:51,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:32:51,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549027576] [2021-11-25 20:32:51,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:32:51,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:32:51,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:32:51,912 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-11-25 20:32:51,913 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:32:51,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549027576] [2021-11-25 20:32:51,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549027576] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:32:51,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:32:51,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 20:32:51,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633879063] [2021-11-25 20:32:51,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:32:51,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 20:32:51,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:32:51,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 20:32:51,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:32:51,915 INFO L87 Difference]: Start difference. First operand 6800 states and 9137 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 6 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2021-11-25 20:32:54,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:32:54,154 INFO L93 Difference]: Finished difference Result 19033 states and 23159 transitions. [2021-11-25 20:32:54,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:32:54,154 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 6 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 174 [2021-11-25 20:32:54,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:32:54,184 INFO L225 Difference]: With dead ends: 19033 [2021-11-25 20:32:54,184 INFO L226 Difference]: Without dead ends: 16437 [2021-11-25 20:32:54,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:32:54,190 INFO L933 BasicCegarLoop]: 3413 mSDtfsCounter, 3643 mSDsluCounter, 10759 mSDsCounter, 0 mSdLazyCounter, 1476 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3643 SdHoareTripleChecker+Valid, 13362 SdHoareTripleChecker+Invalid, 1486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-25 20:32:54,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3643 Valid, 13362 Invalid, 1486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1476 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-25 20:32:54,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16437 states. [2021-11-25 20:32:55,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16437 to 10769. [2021-11-25 20:32:55,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10769 states, 9079 states have (on average 1.301354774754929) internal successors, (11815), 9109 states have internal predecessors, (11815), 875 states have call successors, (875), 795 states have call predecessors, (875), 813 states have return successors, (975), 864 states have call predecessors, (975), 873 states have call successors, (975) [2021-11-25 20:32:55,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10769 states to 10769 states and 13665 transitions. [2021-11-25 20:32:55,036 INFO L78 Accepts]: Start accepts. Automaton has 10769 states and 13665 transitions. Word has length 174 [2021-11-25 20:32:55,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:32:55,036 INFO L470 AbstractCegarLoop]: Abstraction has 10769 states and 13665 transitions. [2021-11-25 20:32:55,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 6 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2021-11-25 20:32:55,037 INFO L276 IsEmpty]: Start isEmpty. Operand 10769 states and 13665 transitions. [2021-11-25 20:32:55,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-25 20:32:55,048 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:32:55,048 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-25 20:32:55,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-25 20:32:55,049 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:32:55,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:32:55,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1221690670, now seen corresponding path program 1 times [2021-11-25 20:32:55,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:32:55,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235083832] [2021-11-25 20:32:55,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:32:55,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:32:55,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 20:32:55,100 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 20:32:55,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 20:32:55,278 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-25 20:32:55,278 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 20:32:55,280 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-25 20:32:55,282 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-25 20:32:55,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-25 20:32:55,286 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:32:55,290 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 20:32:55,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:32:55 BoogieIcfgContainer [2021-11-25 20:32:55,572 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 20:32:55,573 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 20:32:55,573 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 20:32:55,573 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 20:32:55,574 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:26:19" (3/4) ... [2021-11-25 20:32:55,576 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-25 20:32:55,782 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/witness.graphml [2021-11-25 20:32:55,782 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 20:32:55,784 INFO L158 Benchmark]: Toolchain (without parser) took 414304.71ms. Allocated memory was 134.2MB in the beginning and 3.5GB in the end (delta: 3.3GB). Free memory was 66.4MB in the beginning and 2.2GB in the end (delta: -2.1GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2021-11-25 20:32:55,785 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 92.3MB. Free memory was 48.8MB in the beginning and 48.8MB in the end (delta: 40.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 20:32:55,788 INFO L158 Benchmark]: CACSL2BoogieTranslator took 5089.55ms. Allocated memory was 134.2MB in the beginning and 195.0MB in the end (delta: 60.8MB). Free memory was 66.4MB in the beginning and 72.8MB in the end (delta: -6.4MB). Peak memory consumption was 84.7MB. Max. memory is 16.1GB. [2021-11-25 20:32:55,790 INFO L158 Benchmark]: Boogie Procedure Inliner took 546.15ms. Allocated memory was 195.0MB in the beginning and 293.6MB in the end (delta: 98.6MB). Free memory was 72.8MB in the beginning and 133.5MB in the end (delta: -60.7MB). Peak memory consumption was 38.9MB. Max. memory is 16.1GB. [2021-11-25 20:32:55,791 INFO L158 Benchmark]: Boogie Preprocessor took 701.70ms. Allocated memory is still 293.6MB. Free memory was 133.5MB in the beginning and 133.0MB in the end (delta: 447.1kB). Peak memory consumption was 80.4MB. Max. memory is 16.1GB. [2021-11-25 20:32:55,791 INFO L158 Benchmark]: RCFGBuilder took 11515.30ms. Allocated memory was 293.6MB in the beginning and 868.2MB in the end (delta: 574.6MB). Free memory was 133.0MB in the beginning and 409.3MB in the end (delta: -276.2MB). Peak memory consumption was 373.6MB. Max. memory is 16.1GB. [2021-11-25 20:32:55,797 INFO L158 Benchmark]: TraceAbstraction took 396232.29ms. Allocated memory was 868.2MB in the beginning and 3.5GB in the end (delta: 2.6GB). Free memory was 409.3MB in the beginning and 2.2GB in the end (delta: -1.8GB). Peak memory consumption was 791.0MB. Max. memory is 16.1GB. [2021-11-25 20:32:55,797 INFO L158 Benchmark]: Witness Printer took 209.69ms. Allocated memory is still 3.5GB. Free memory was 2.2GB in the beginning and 2.2GB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2021-11-25 20:32:55,801 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 92.3MB. Free memory was 48.8MB in the beginning and 48.8MB in the end (delta: 40.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 5089.55ms. Allocated memory was 134.2MB in the beginning and 195.0MB in the end (delta: 60.8MB). Free memory was 66.4MB in the beginning and 72.8MB in the end (delta: -6.4MB). Peak memory consumption was 84.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 546.15ms. Allocated memory was 195.0MB in the beginning and 293.6MB in the end (delta: 98.6MB). Free memory was 72.8MB in the beginning and 133.5MB in the end (delta: -60.7MB). Peak memory consumption was 38.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 701.70ms. Allocated memory is still 293.6MB. Free memory was 133.5MB in the beginning and 133.0MB in the end (delta: 447.1kB). Peak memory consumption was 80.4MB. Max. memory is 16.1GB. * RCFGBuilder took 11515.30ms. Allocated memory was 293.6MB in the beginning and 868.2MB in the end (delta: 574.6MB). Free memory was 133.0MB in the beginning and 409.3MB in the end (delta: -276.2MB). Peak memory consumption was 373.6MB. Max. memory is 16.1GB. * TraceAbstraction took 396232.29ms. Allocated memory was 868.2MB in the beginning and 3.5GB in the end (delta: 2.6GB). Free memory was 409.3MB in the beginning and 2.2GB in the end (delta: -1.8GB). Peak memory consumption was 791.0MB. Max. memory is 16.1GB. * Witness Printer took 209.69ms. Allocated memory is still 3.5GB. Free memory was 2.2GB in the beginning and 2.2GB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 11173]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L33] int d= 4; [L34] int c= 3; [L35] int e= 5; [L36] int a= 1; [L37] int f= 6; [L38] int b= 2; [L40] int a9 = 18; [L41] int a27 = 1; [L42] int a2 = 10; [L43] int a16 = 1; [L44] int a15 = 1; [L45] int a12 = 4; [L46] int a25 = 1; [L47] int a20 = 5; [L11177] int m_pc = 0; [L11178] int t1_pc = 0; [L11179] int t2_pc = 0; [L11180] int t3_pc = 0; [L11181] int m_st ; [L11182] int t1_st ; [L11183] int t2_st ; [L11184] int t3_st ; [L11185] int m_i ; [L11186] int t1_i ; [L11187] int t2_i ; [L11188] int t3_i ; [L11189] int M_E = 2; [L11190] int T1_E = 2; [L11191] int T2_E = 2; [L11192] int T3_E = 2; [L11193] int E_M = 2; [L11194] int E_1 = 2; [L11195] int E_2 = 2; [L11196] int E_3 = 2; [L11202] int token ; [L11204] int local ; [L11901] COND FALSE !(__VERIFIER_nondet_int()) [L11904] CALL main2() [L11888] int __retres1 ; [L11892] CALL init_model() [L11801] m_i = 1 [L11802] t1_i = 1 [L11803] t2_i = 1 [L11804] t3_i = 1 [L11892] RET init_model() [L11893] CALL start_simulation() [L11829] int kernel_st ; [L11830] int tmp ; [L11831] int tmp___0 ; [L11835] kernel_st = 0 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11836] FCALL update_channels() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11837] CALL init_threads() [L11457] COND TRUE m_i == 1 [L11458] m_st = 0 [L11462] COND TRUE t1_i == 1 [L11463] t1_st = 0 [L11467] COND TRUE t2_i == 1 [L11468] t2_st = 0 [L11472] COND TRUE t3_i == 1 [L11473] t3_st = 0 [L11837] RET init_threads() [L11838] CALL fire_delta_events() VAL [\old(E_1)=2, \old(E_2)=2, \old(E_3)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, \old(T2_E)=2, \old(T3_E)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11594] COND FALSE !(M_E == 0) [L11599] COND FALSE !(T1_E == 0) [L11604] COND FALSE !(T2_E == 0) [L11609] COND FALSE !(T3_E == 0) [L11614] COND FALSE !(E_M == 0) [L11619] COND FALSE !(E_1 == 0) [L11624] COND FALSE !(E_2 == 0) [L11629] COND FALSE !(E_3 == 0) [L11838] RET fire_delta_events() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11839] CALL activate_threads() VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11687] int tmp ; [L11688] int tmp___0 ; [L11689] int tmp___1 ; [L11690] int tmp___2 ; [L11694] CALL, EXPR is_master_triggered() [L11370] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11373] COND FALSE !(m_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11383] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11385] return (__retres1); [L11694] RET, EXPR is_master_triggered() [L11694] tmp = is_master_triggered() [L11696] COND FALSE !(\read(tmp)) [L11702] CALL, EXPR is_transmit1_triggered() [L11389] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11392] COND FALSE !(t1_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11402] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11404] return (__retres1); [L11702] RET, EXPR is_transmit1_triggered() [L11702] tmp___0 = is_transmit1_triggered() [L11704] COND FALSE !(\read(tmp___0)) [L11710] CALL, EXPR is_transmit2_triggered() [L11408] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11411] COND FALSE !(t2_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11421] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11423] return (__retres1); [L11710] RET, EXPR is_transmit2_triggered() [L11710] tmp___1 = is_transmit2_triggered() [L11712] COND FALSE !(\read(tmp___1)) [L11718] CALL, EXPR is_transmit3_triggered() [L11427] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11430] COND FALSE !(t3_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11440] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11442] return (__retres1); [L11718] RET, EXPR is_transmit3_triggered() [L11718] tmp___2 = is_transmit3_triggered() [L11720] COND FALSE !(\read(tmp___2)) [L11839] RET activate_threads() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11840] CALL reset_delta_events() VAL [\old(E_1)=2, \old(E_2)=2, \old(E_3)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, \old(T2_E)=2, \old(T3_E)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11642] COND FALSE !(M_E == 1) [L11647] COND FALSE !(T1_E == 1) [L11652] COND FALSE !(T2_E == 1) [L11657] COND FALSE !(T3_E == 1) [L11662] COND FALSE !(E_M == 1) [L11667] COND FALSE !(E_1 == 1) [L11672] COND FALSE !(E_2 == 1) [L11677] COND FALSE !(E_3 == 1) [L11840] RET reset_delta_events() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11843] COND TRUE 1 [L11846] kernel_st = 1 [L11847] CALL eval() [L11513] int tmp ; VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11517] COND TRUE 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11520] CALL, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11482] int __retres1 ; [L11485] COND TRUE m_st == 0 [L11486] __retres1 = 1 [L11508] return (__retres1); [L11520] RET, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, exists_runnable_thread()=1, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11520] tmp = exists_runnable_thread() [L11522] COND TRUE \read(tmp) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, tmp=1, token=0] [L11527] COND TRUE m_st == 0 [L11528] int tmp_ndt_1; [L11529] tmp_ndt_1 = __VERIFIER_nondet_int() [L11530] COND FALSE !(\read(tmp_ndt_1)) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, tmp=1, tmp_ndt_1=0, token=0] [L11541] COND TRUE t1_st == 0 [L11542] int tmp_ndt_2; [L11543] tmp_ndt_2 = __VERIFIER_nondet_int() [L11544] COND TRUE \read(tmp_ndt_2) [L11546] t1_st = 1 [L11547] CALL transmit1() [L11265] COND TRUE t1_pc == 0 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=1, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11276] COND TRUE 1 [L11278] t1_pc = 1 [L11279] t1_st = 2 [L11547] RET transmit1() [L11555] COND TRUE t2_st == 0 [L11556] int tmp_ndt_3; [L11557] tmp_ndt_3 = __VERIFIER_nondet_int() [L11558] COND TRUE \read(tmp_ndt_3) [L11560] t2_st = 1 [L11561] CALL transmit2() [L11301] COND TRUE t2_pc == 0 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=0, t2_st=1, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L11312] COND TRUE 1 [L11314] t2_pc = 1 [L11315] t2_st = 2 [L11561] RET transmit2() [L11569] COND TRUE t3_st == 0 [L11570] int tmp_ndt_4; [L11571] tmp_ndt_4 = __VERIFIER_nondet_int() [L11572] COND TRUE \read(tmp_ndt_4) [L11574] t3_st = 1 [L11575] CALL transmit3() [L11337] COND TRUE t3_pc == 0 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=0, t3_st=1, token=0] [L11348] COND TRUE 1 [L11350] t3_pc = 1 [L11351] t3_st = 2 [L11575] RET transmit3() [L11517] COND TRUE 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp=1, tmp_ndt_1=0, tmp_ndt_2=-1, tmp_ndt_3=1, tmp_ndt_4=1, token=0] [L11520] CALL, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11482] int __retres1 ; [L11485] COND TRUE m_st == 0 [L11486] __retres1 = 1 [L11508] return (__retres1); [L11520] RET, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, exists_runnable_thread()=1, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp=1, tmp_ndt_1=0, tmp_ndt_2=-1, tmp_ndt_3=1, tmp_ndt_4=1, token=0] [L11520] tmp = exists_runnable_thread() [L11522] COND TRUE \read(tmp) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp=1, tmp_ndt_1=0, tmp_ndt_2=-1, tmp_ndt_3=1, tmp_ndt_4=1, token=0] [L11527] COND TRUE m_st == 0 [L11528] int tmp_ndt_1; [L11529] tmp_ndt_1 = __VERIFIER_nondet_int() [L11530] COND TRUE \read(tmp_ndt_1) [L11532] m_st = 1 [L11533] CALL master() [L11207] int tmp_var = __VERIFIER_nondet_int(); [L11209] COND TRUE m_pc == 0 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=0, token=0] [L11220] COND TRUE 1 [L11223] token = __VERIFIER_nondet_int() [L11224] local = token [L11225] E_1 = 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=0, token=0] [L11226] CALL immediate_notify() VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11734] CALL activate_threads() VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11687] int tmp ; [L11688] int tmp___0 ; [L11689] int tmp___1 ; [L11690] int tmp___2 ; [L11694] CALL, EXPR is_master_triggered() [L11370] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11373] COND FALSE !(m_pc == 1) VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11383] __retres1 = 0 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11385] return (__retres1); [L11694] RET, EXPR is_master_triggered() [L11694] tmp = is_master_triggered() [L11696] COND FALSE !(\read(tmp)) [L11702] CALL, EXPR is_transmit1_triggered() [L11389] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11392] COND TRUE t1_pc == 1 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11393] COND TRUE E_1 == 1 [L11394] __retres1 = 1 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, __retres1=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11404] return (__retres1); [L11702] RET, EXPR is_transmit1_triggered() [L11702] tmp___0 = is_transmit1_triggered() [L11704] COND TRUE \read(tmp___0) [L11705] t1_st = 0 [L11710] CALL, EXPR is_transmit2_triggered() [L11408] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11411] COND TRUE t2_pc == 1 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11412] COND FALSE !(E_2 == 1) VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11421] __retres1 = 0 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11423] return (__retres1); [L11710] RET, EXPR is_transmit2_triggered() [L11710] tmp___1 = is_transmit2_triggered() [L11712] COND FALSE !(\read(tmp___1)) [L11718] CALL, EXPR is_transmit3_triggered() [L11427] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11430] COND TRUE t3_pc == 1 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11431] COND FALSE !(E_3 == 1) VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11440] __retres1 = 0 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11442] return (__retres1); [L11718] RET, EXPR is_transmit3_triggered() [L11718] tmp___2 = is_transmit3_triggered() [L11720] COND FALSE !(\read(tmp___2)) [L11734] RET activate_threads() VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11226] RET immediate_notify() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=0, token=0] [L11227] E_1 = 2 [L11228] m_pc = 1 [L11229] m_st = 2 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=0, token=0] [L11533] RET master() [L11541] COND TRUE t1_st == 0 [L11542] int tmp_ndt_2; [L11543] tmp_ndt_2 = __VERIFIER_nondet_int() [L11544] COND TRUE \read(tmp_ndt_2) [L11546] t1_st = 1 [L11547] CALL transmit1() [L11265] COND FALSE !(t1_pc == 0) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L11268] COND TRUE t1_pc == 1 [L11284] token += 1 [L11285] E_2 = 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11286] CALL immediate_notify() VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11734] CALL activate_threads() VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11687] int tmp ; [L11688] int tmp___0 ; [L11689] int tmp___1 ; [L11690] int tmp___2 ; [L11694] CALL, EXPR is_master_triggered() [L11370] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11373] COND TRUE m_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11374] COND FALSE !(E_M == 1) VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11383] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11385] return (__retres1); [L11694] RET, EXPR is_master_triggered() [L11694] tmp = is_master_triggered() [L11696] COND FALSE !(\read(tmp)) [L11702] CALL, EXPR is_transmit1_triggered() [L11389] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11392] COND TRUE t1_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11393] COND FALSE !(E_1 == 1) VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11402] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11404] return (__retres1); [L11702] RET, EXPR is_transmit1_triggered() [L11702] tmp___0 = is_transmit1_triggered() [L11704] COND FALSE !(\read(tmp___0)) [L11710] CALL, EXPR is_transmit2_triggered() [L11408] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11411] COND TRUE t2_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11412] COND TRUE E_2 == 1 [L11413] __retres1 = 1 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, __retres1=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11423] return (__retres1); [L11710] RET, EXPR is_transmit2_triggered() [L11710] tmp___1 = is_transmit2_triggered() [L11712] COND TRUE \read(tmp___1) [L11713] t2_st = 0 [L11718] CALL, EXPR is_transmit3_triggered() [L11427] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11430] COND TRUE t3_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11431] COND FALSE !(E_3 == 1) VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11440] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11442] return (__retres1); [L11718] RET, EXPR is_transmit3_triggered() [L11718] tmp___2 = is_transmit3_triggered() [L11720] COND FALSE !(\read(tmp___2)) [L11734] RET activate_threads() VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11286] RET immediate_notify() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11287] E_2 = 2 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11276] COND TRUE 1 [L11278] t1_pc = 1 [L11279] t1_st = 2 [L11547] RET transmit1() [L11555] COND TRUE t2_st == 0 [L11556] int tmp_ndt_3; [L11557] tmp_ndt_3 = __VERIFIER_nondet_int() [L11558] COND TRUE \read(tmp_ndt_3) [L11560] t2_st = 1 [L11561] CALL transmit2() [L11301] COND FALSE !(t2_pc == 0) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L11304] COND TRUE t2_pc == 1 [L11320] token += 1 [L11321] E_3 = 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11322] CALL immediate_notify() VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11734] CALL activate_threads() VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11687] int tmp ; [L11688] int tmp___0 ; [L11689] int tmp___1 ; [L11690] int tmp___2 ; [L11694] CALL, EXPR is_master_triggered() [L11370] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11373] COND TRUE m_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11374] COND FALSE !(E_M == 1) VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11383] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11385] return (__retres1); [L11694] RET, EXPR is_master_triggered() [L11694] tmp = is_master_triggered() [L11696] COND FALSE !(\read(tmp)) [L11702] CALL, EXPR is_transmit1_triggered() [L11389] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11392] COND TRUE t1_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11393] COND FALSE !(E_1 == 1) VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11402] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11404] return (__retres1); [L11702] RET, EXPR is_transmit1_triggered() [L11702] tmp___0 = is_transmit1_triggered() [L11704] COND FALSE !(\read(tmp___0)) [L11710] CALL, EXPR is_transmit2_triggered() [L11408] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11411] COND TRUE t2_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11412] COND FALSE !(E_2 == 1) VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11421] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11423] return (__retres1); [L11710] RET, EXPR is_transmit2_triggered() [L11710] tmp___1 = is_transmit2_triggered() [L11712] COND FALSE !(\read(tmp___1)) [L11718] CALL, EXPR is_transmit3_triggered() [L11427] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11430] COND TRUE t3_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11431] COND TRUE E_3 == 1 [L11432] __retres1 = 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, __retres1=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L11442] return (__retres1); [L11718] RET, EXPR is_transmit3_triggered() [L11718] tmp___2 = is_transmit3_triggered() [L11720] COND TRUE \read(tmp___2) [L11721] t3_st = 0 [L11734] RET activate_threads() VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=0, token=2] [L11322] RET immediate_notify() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=0, token=2] [L11323] E_3 = 2 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=0, token=2] [L11312] COND TRUE 1 [L11314] t2_pc = 1 [L11315] t2_st = 2 [L11561] RET transmit2() [L11569] COND TRUE t3_st == 0 [L11570] int tmp_ndt_4; [L11571] tmp_ndt_4 = __VERIFIER_nondet_int() [L11572] COND TRUE \read(tmp_ndt_4) [L11574] t3_st = 1 [L11575] CALL transmit3() [L11337] COND FALSE !(t3_pc == 0) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=2] [L11340] COND TRUE t3_pc == 1 [L11356] token += 1 [L11357] E_M = 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11358] CALL immediate_notify() VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11734] CALL activate_threads() VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11687] int tmp ; [L11688] int tmp___0 ; [L11689] int tmp___1 ; [L11690] int tmp___2 ; [L11694] CALL, EXPR is_master_triggered() [L11370] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11373] COND TRUE m_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11374] COND TRUE E_M == 1 [L11375] __retres1 = 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, __retres1=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11385] return (__retres1); [L11694] RET, EXPR is_master_triggered() [L11694] tmp = is_master_triggered() [L11696] COND TRUE \read(tmp) [L11697] m_st = 0 [L11702] CALL, EXPR is_transmit1_triggered() [L11389] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11392] COND TRUE t1_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11393] COND FALSE !(E_1 == 1) VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11402] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11404] return (__retres1); [L11702] RET, EXPR is_transmit1_triggered() [L11702] tmp___0 = is_transmit1_triggered() [L11704] COND FALSE !(\read(tmp___0)) [L11710] CALL, EXPR is_transmit2_triggered() [L11408] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11411] COND TRUE t2_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11412] COND FALSE !(E_2 == 1) VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11421] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11423] return (__retres1); [L11710] RET, EXPR is_transmit2_triggered() [L11710] tmp___1 = is_transmit2_triggered() [L11712] COND FALSE !(\read(tmp___1)) [L11718] CALL, EXPR is_transmit3_triggered() [L11427] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11430] COND TRUE t3_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11431] COND FALSE !(E_3 == 1) VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11440] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11442] return (__retres1); [L11718] RET, EXPR is_transmit3_triggered() [L11718] tmp___2 = is_transmit3_triggered() [L11720] COND FALSE !(\read(tmp___2)) [L11734] RET activate_threads() VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11358] RET immediate_notify() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11359] E_M = 2 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L11348] COND TRUE 1 [L11350] t3_pc = 1 [L11351] t3_st = 2 [L11575] RET transmit3() [L11517] COND TRUE 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp=1, tmp_ndt_1=-2, tmp_ndt_2=-3, tmp_ndt_3=1, tmp_ndt_4=1, token=3] [L11520] CALL, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=3] [L11482] int __retres1 ; [L11485] COND TRUE m_st == 0 [L11486] __retres1 = 1 [L11508] return (__retres1); [L11520] RET, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, exists_runnable_thread()=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp=1, tmp_ndt_1=-2, tmp_ndt_2=-3, tmp_ndt_3=1, tmp_ndt_4=1, token=3] [L11520] tmp = exists_runnable_thread() [L11522] COND TRUE \read(tmp) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp=1, tmp_ndt_1=-2, tmp_ndt_2=-3, tmp_ndt_3=1, tmp_ndt_4=1, token=3] [L11527] COND TRUE m_st == 0 [L11528] int tmp_ndt_1; [L11529] tmp_ndt_1 = __VERIFIER_nondet_int() [L11530] COND TRUE \read(tmp_ndt_1) [L11532] m_st = 1 [L11533] CALL master() [L11207] int tmp_var = __VERIFIER_nondet_int(); [L11209] COND FALSE !(m_pc == 0) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=5, token=3] [L11212] COND TRUE m_pc == 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=5, token=3] [L11234] COND FALSE !(token != local + 3) [L11239] COND TRUE tmp_var <= 5 [L11240] COND TRUE tmp_var >= 5 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=5, token=3] [L11245] COND TRUE tmp_var <= 5 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=5, token=3] [L11246] COND TRUE tmp_var >= 5 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=5, token=3] [L11247] COND TRUE tmp_var == 5 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=5, token=3] [L11248] CALL error() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=3] [L11173] reach_error() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_3=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=3] - UnprovableResult [Line: 11118]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 1738 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 395.9s, OverallIterations: 30, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.3s, AutomataDifference: 51.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 118402 SdHoareTripleChecker+Valid, 25.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 118308 mSDsluCounter, 322482 SdHoareTripleChecker+Invalid, 21.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 245828 mSDsCounter, 5115 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 38083 IncrementalHoareTripleChecker+Invalid, 43198 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5115 mSolverCounterUnsat, 94334 mSDtfsCounter, 38083 mSolverCounterSat, 0.7s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4820 GetRequests, 3841 SyntacticMatches, 66 SemanticMatches, 913 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73945 ImplicationChecksByTransitivity, 187.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13066occurred in iteration=20, InterpolantAutomatonStates: 625, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 12.9s AutomataMinimizationTime, 29 MinimizatonAttempts, 30320 StatesRemovedByMinimization, 28 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.9s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 11.1s InterpolantComputationTime, 6193 NumberOfCodeBlocks, 6193 NumberOfCodeBlocksAsserted, 54 NumberOfCheckSat, 6572 ConstructedInterpolants, 0 QuantifiedInterpolants, 12185 SizeOfPredicates, 41 NumberOfNonLiveVariables, 14196 ConjunctsInSsa, 218 ConjunctsInUnsatCore, 58 InterpolantComputations, 25 PerfectInterpolantSequences, 3851/4359 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-25 20:32:55,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3a7c82-e12e-489d-b594-2627116fd863/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE