./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.02.cil-2.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_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/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_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.02.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/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_7f135142-a8a2-4c41-964c-a49e6c6d499b/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 954b1f05390ccaafb1cee97c6b5216f4167723fe344c33082a0f73951b4d6f58 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:58:14,652 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:58:14,656 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:58:14,707 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:58:14,708 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:58:14,712 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:58:14,713 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:58:14,717 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:58:14,720 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:58:14,725 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:58:14,726 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:58:14,728 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:58:14,728 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:58:14,731 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:58:14,733 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:58:14,740 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:58:14,742 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:58:14,743 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:58:14,745 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:58:14,752 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:58:14,754 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:58:14,755 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:58:14,758 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:58:14,759 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:58:14,768 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:58:14,769 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:58:14,769 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:58:14,771 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:58:14,772 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:58:14,773 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:58:14,774 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:58:14,774 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:58:14,776 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:58:14,778 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:58:14,779 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:58:14,779 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:58:14,780 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:58:14,780 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:58:14,781 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:58:14,782 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:58:14,782 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:58:14,783 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 19:58:14,814 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:58:14,815 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:58:14,815 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:58:14,815 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:58:14,816 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:58:14,816 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:58:14,817 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:58:14,817 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:58:14,817 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:58:14,817 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:58:14,818 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:58:14,818 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:58:14,818 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:58:14,818 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:58:14,818 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:58:14,819 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:58:14,819 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:58:14,819 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:58:14,828 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:58:14,828 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:58:14,828 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:58:14,828 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:58:14,829 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:58:14,829 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:58:14,829 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:58:14,829 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:58:14,829 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:58:14,830 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:58:14,830 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:58:14,830 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:58:14,830 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:58:14,830 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:58:14,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:58:14,831 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:58:14,831 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:58:14,831 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:58:14,831 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:58:14,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:58:14,832 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:58:14,832 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:58:14,832 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:58:14,832 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_7f135142-a8a2-4c41-964c-a49e6c6d499b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 954b1f05390ccaafb1cee97c6b5216f4167723fe344c33082a0f73951b4d6f58 [2021-11-25 19:58:15,123 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:58:15,148 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:58:15,152 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:58:15,153 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:58:15,154 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:58:15,155 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.02.cil-2.c [2021-11-25 19:58:15,244 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/data/4e6029563/b18e6a97de0f405184242cabc4210547/FLAGbc66a2258 [2021-11-25 19:58:16,230 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:58:16,230 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/sv-benchmarks/c/combinations/Problem05_label42+token_ring.02.cil-2.c [2021-11-25 19:58:16,293 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/data/4e6029563/b18e6a97de0f405184242cabc4210547/FLAGbc66a2258 [2021-11-25 19:58:16,591 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/data/4e6029563/b18e6a97de0f405184242cabc4210547 [2021-11-25 19:58:16,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:58:16,596 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:58:16,599 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:58:16,600 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:58:16,603 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:58:16,604 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:58:16" (1/1) ... [2021-11-25 19:58:16,605 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ea570ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:58:16, skipping insertion in model container [2021-11-25 19:58:16,606 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:58:16" (1/1) ... [2021-11-25 19:58:16,613 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:58:16,916 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:58:19,088 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_7f135142-a8a2-4c41-964c-a49e6c6d499b/sv-benchmarks/c/combinations/Problem05_label42+token_ring.02.cil-2.c[378560,378573] [2021-11-25 19:58:19,144 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_7f135142-a8a2-4c41-964c-a49e6c6d499b/sv-benchmarks/c/combinations/Problem05_label42+token_ring.02.cil-2.c[383339,383352] [2021-11-25 19:58:19,335 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:58:19,346 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:58:20,620 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_7f135142-a8a2-4c41-964c-a49e6c6d499b/sv-benchmarks/c/combinations/Problem05_label42+token_ring.02.cil-2.c[378560,378573] [2021-11-25 19:58:20,629 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_7f135142-a8a2-4c41-964c-a49e6c6d499b/sv-benchmarks/c/combinations/Problem05_label42+token_ring.02.cil-2.c[383339,383352] [2021-11-25 19:58:20,651 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:58:20,732 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:58:20,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:58:20 WrapperNode [2021-11-25 19:58:20,733 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:58:20,734 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:58:20,734 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:58:20,734 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:58:20,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:58:20" (1/1) ... [2021-11-25 19:58:20,883 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:58:20" (1/1) ... [2021-11-25 19:58:21,563 INFO L137 Inliner]: procedures = 48, calls = 48, calls flagged for inlining = 25, calls inlined = 25, statements flattened = 12624 [2021-11-25 19:58:21,564 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:58:21,565 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:58:21,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:58:21,565 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:58:21,603 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:58:20" (1/1) ... [2021-11-25 19:58:21,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:58:20" (1/1) ... [2021-11-25 19:58:21,698 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:58:20" (1/1) ... [2021-11-25 19:58:21,698 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:58:20" (1/1) ... [2021-11-25 19:58:21,881 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:58:20" (1/1) ... [2021-11-25 19:58:21,927 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:58:20" (1/1) ... [2021-11-25 19:58:21,948 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:58:20" (1/1) ... [2021-11-25 19:58:22,064 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:58:22,065 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:58:22,065 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:58:22,066 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:58:22,072 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:58:20" (1/1) ... [2021-11-25 19:58:22,087 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:58:22,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:58:22,113 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:58:22,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:58:22,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:58:22,168 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-11-25 19:58:22,168 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-11-25 19:58:22,168 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-11-25 19:58:22,168 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-11-25 19:58:22,168 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-11-25 19:58:22,168 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-11-25 19:58:22,168 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-11-25 19:58:22,169 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-11-25 19:58:22,169 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-11-25 19:58:22,169 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-11-25 19:58:22,169 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-11-25 19:58:22,169 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-11-25 19:58:22,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:58:22,169 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-11-25 19:58:22,169 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-11-25 19:58:22,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:58:22,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:58:22,329 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:58:22,331 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:58:29,744 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:58:31,630 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:58:31,630 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-25 19:58:31,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:58:31 BoogieIcfgContainer [2021-11-25 19:58:31,636 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:58:31,638 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:58:31,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:58:31,641 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:58:31,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:58:16" (1/3) ... [2021-11-25 19:58:31,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b5b27ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:58:31, skipping insertion in model container [2021-11-25 19:58:31,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:58:20" (2/3) ... [2021-11-25 19:58:31,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b5b27ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:58:31, skipping insertion in model container [2021-11-25 19:58:31,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:58:31" (3/3) ... [2021-11-25 19:58:31,644 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.02.cil-2.c [2021-11-25 19:58:31,649 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:58:31,649 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-25 19:58:31,705 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:58:31,711 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 19:58:31,712 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-25 19:58:31,774 INFO L276 IsEmpty]: Start isEmpty. Operand has 1727 states, 1699 states have (on average 1.9770453207769276) internal successors, (3359), 1704 states have internal predecessors, (3359), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-25 19:58:31,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 19:58:31,782 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:58:31,783 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] [2021-11-25 19:58:31,783 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:58:31,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:58:31,790 INFO L85 PathProgramCache]: Analyzing trace with hash -2069298848, now seen corresponding path program 1 times [2021-11-25 19:58:31,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:58:31,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114914031] [2021-11-25 19:58:31,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:58:31,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:58:31,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:58:32,165 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 19:58:32,166 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:58:32,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114914031] [2021-11-25 19:58:32,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114914031] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:58:32,167 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:58:32,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:58:32,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410003532] [2021-11-25 19:58:32,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:58:32,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:58:32,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:58:32,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:58:32,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:58:32,235 INFO L87 Difference]: Start difference. First operand has 1727 states, 1699 states have (on average 1.9770453207769276) internal successors, (3359), 1704 states have internal predecessors, (3359), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 19:58:33,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:58:33,058 INFO L93 Difference]: Finished difference Result 3514 states and 6887 transitions. [2021-11-25 19:58:33,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:58:33,061 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 38 [2021-11-25 19:58:33,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:58:33,092 INFO L225 Difference]: With dead ends: 3514 [2021-11-25 19:58:33,092 INFO L226 Difference]: Without dead ends: 1786 [2021-11-25 19:58:33,103 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 19:58:33,109 INFO L933 BasicCegarLoop]: 3218 mSDtfsCounter, 3457 mSDsluCounter, 3407 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3457 SdHoareTripleChecker+Valid, 6376 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:58:33,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3457 Valid, 6376 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 19:58:33,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1786 states. [2021-11-25 19:58:33,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1786 to 1785. [2021-11-25 19:58:33,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1785 states, 1741 states have (on average 1.9563469270534175) internal successors, (3406), 1745 states have internal predecessors, (3406), 30 states have call successors, (30), 13 states have call predecessors, (30), 12 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-25 19:58:33,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1785 states to 1785 states and 3464 transitions. [2021-11-25 19:58:33,280 INFO L78 Accepts]: Start accepts. Automaton has 1785 states and 3464 transitions. Word has length 38 [2021-11-25 19:58:33,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:58:33,281 INFO L470 AbstractCegarLoop]: Abstraction has 1785 states and 3464 transitions. [2021-11-25 19:58:33,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 19:58:33,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1785 states and 3464 transitions. [2021-11-25 19:58:33,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-25 19:58:33,293 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:58:33,293 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-25 19:58:33,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:58:33,294 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:58:33,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:58:33,297 INFO L85 PathProgramCache]: Analyzing trace with hash -663308944, now seen corresponding path program 1 times [2021-11-25 19:58:33,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:58:33,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626612693] [2021-11-25 19:58:33,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:58:33,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:58:33,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:58:33,455 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 19:58:33,455 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:58:33,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626612693] [2021-11-25 19:58:33,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626612693] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:58:33,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352777671] [2021-11-25 19:58:33,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:58:33,459 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:58:33,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:58:33,467 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:58:33,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 19:58:33,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:58:33,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 19:58:33,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:58:33,848 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-25 19:58:33,848 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:58:33,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352777671] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:58:33,849 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:58:33,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2021-11-25 19:58:33,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599187469] [2021-11-25 19:58:33,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:58:33,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:58:33,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:58:33,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:58:33,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:58:33,852 INFO L87 Difference]: Start difference. First operand 1785 states and 3464 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 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 19:58:34,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:58:34,268 INFO L93 Difference]: Finished difference Result 2056 states and 3839 transitions. [2021-11-25 19:58:34,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:58:34,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 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 67 [2021-11-25 19:58:34,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:58:34,285 INFO L225 Difference]: With dead ends: 2056 [2021-11-25 19:58:34,285 INFO L226 Difference]: Without dead ends: 1917 [2021-11-25 19:58:34,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 67 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 19:58:34,288 INFO L933 BasicCegarLoop]: 3187 mSDtfsCounter, 3356 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3356 SdHoareTripleChecker+Valid, 3269 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:58:34,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3356 Valid, 3269 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:58:34,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1917 states. [2021-11-25 19:58:34,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1917 to 1911. [2021-11-25 19:58:34,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1911 states, 1833 states have (on average 1.9252591380250954) internal successors, (3529), 1838 states have internal predecessors, (3529), 52 states have call successors, (52), 25 states have call predecessors, (52), 24 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) [2021-11-25 19:58:34,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1911 states to 1911 states and 3631 transitions. [2021-11-25 19:58:34,360 INFO L78 Accepts]: Start accepts. Automaton has 1911 states and 3631 transitions. Word has length 67 [2021-11-25 19:58:34,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:58:34,360 INFO L470 AbstractCegarLoop]: Abstraction has 1911 states and 3631 transitions. [2021-11-25 19:58:34,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 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 19:58:34,361 INFO L276 IsEmpty]: Start isEmpty. Operand 1911 states and 3631 transitions. [2021-11-25 19:58:34,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-25 19:58:34,364 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:58:34,364 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-25 19:58:34,400 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-25 19:58:34,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:58:34,592 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:58:34,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:58:34,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1613665072, now seen corresponding path program 1 times [2021-11-25 19:58:34,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:58:34,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894319652] [2021-11-25 19:58:34,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:58:34,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:58:34,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:58:34,699 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-25 19:58:34,700 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:58:34,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894319652] [2021-11-25 19:58:34,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894319652] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:58:34,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:58:34,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 19:58:34,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982183063] [2021-11-25 19:58:34,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:58:34,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:58:34,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:58:34,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:58:34,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:58:34,703 INFO L87 Difference]: Start difference. First operand 1911 states and 3631 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 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 19:58:35,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:58:35,523 INFO L93 Difference]: Finished difference Result 2467 states and 4380 transitions. [2021-11-25 19:58:35,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 19:58:35,524 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 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 67 [2021-11-25 19:58:35,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:58:35,541 INFO L225 Difference]: With dead ends: 2467 [2021-11-25 19:58:35,541 INFO L226 Difference]: Without dead ends: 2203 [2021-11-25 19:58:35,543 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 19:58:35,544 INFO L933 BasicCegarLoop]: 3165 mSDtfsCounter, 3530 mSDsluCounter, 6702 mSDsCounter, 0 mSdLazyCounter, 786 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3541 SdHoareTripleChecker+Valid, 9419 SdHoareTripleChecker+Invalid, 884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:58:35,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3541 Valid, 9419 Invalid, 884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 786 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 19:58:35,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2203 states. [2021-11-25 19:58:35,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2203 to 2147. [2021-11-25 19:58:35,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2147 states, 2003 states have (on average 1.872690963554668) internal successors, (3751), 2010 states have internal predecessors, (3751), 94 states have call successors, (94), 49 states have call predecessors, (94), 48 states have return successors, (92), 88 states have call predecessors, (92), 92 states have call successors, (92) [2021-11-25 19:58:35,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2147 states to 2147 states and 3937 transitions. [2021-11-25 19:58:35,631 INFO L78 Accepts]: Start accepts. Automaton has 2147 states and 3937 transitions. Word has length 67 [2021-11-25 19:58:35,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:58:35,631 INFO L470 AbstractCegarLoop]: Abstraction has 2147 states and 3937 transitions. [2021-11-25 19:58:35,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 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 19:58:35,632 INFO L276 IsEmpty]: Start isEmpty. Operand 2147 states and 3937 transitions. [2021-11-25 19:58:35,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-25 19:58:35,634 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:58:35,634 INFO L514 BasicCegarLoop]: trace histogram [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 19:58:35,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 19:58:35,635 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:58:35,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:58:35,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1513893631, now seen corresponding path program 1 times [2021-11-25 19:58:35,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:58:35,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295760009] [2021-11-25 19:58:35,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:58:35,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:58:35,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:58:35,698 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-25 19:58:35,698 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:58:35,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295760009] [2021-11-25 19:58:35,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295760009] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:58:35,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:58:35,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:58:35,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520904732] [2021-11-25 19:58:35,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:58:35,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:58:35,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:58:35,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:58:35,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:58:35,707 INFO L87 Difference]: Start difference. First operand 2147 states and 3937 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-25 19:58:36,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:58:36,179 INFO L93 Difference]: Finished difference Result 2536 states and 4460 transitions. [2021-11-25 19:58:36,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:58:36,180 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2021-11-25 19:58:36,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:58:36,197 INFO L225 Difference]: With dead ends: 2536 [2021-11-25 19:58:36,198 INFO L226 Difference]: Without dead ends: 2268 [2021-11-25 19:58:36,200 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 19:58:36,205 INFO L933 BasicCegarLoop]: 3187 mSDtfsCounter, 36 mSDsluCounter, 3376 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 6336 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 19:58:36,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 6336 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 19:58:36,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2268 states. [2021-11-25 19:58:36,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2268 to 2205. [2021-11-25 19:58:36,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2205 states, 2053 states have (on average 1.864101315148563) internal successors, (3827), 2060 states have internal predecessors, (3827), 98 states have call successors, (98), 53 states have call predecessors, (98), 52 states have return successors, (96), 92 states have call predecessors, (96), 96 states have call successors, (96) [2021-11-25 19:58:36,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2205 states to 2205 states and 4021 transitions. [2021-11-25 19:58:36,310 INFO L78 Accepts]: Start accepts. Automaton has 2205 states and 4021 transitions. Word has length 68 [2021-11-25 19:58:36,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:58:36,311 INFO L470 AbstractCegarLoop]: Abstraction has 2205 states and 4021 transitions. [2021-11-25 19:58:36,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-25 19:58:36,312 INFO L276 IsEmpty]: Start isEmpty. Operand 2205 states and 4021 transitions. [2021-11-25 19:58:36,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-25 19:58:36,316 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:58:36,316 INFO L514 BasicCegarLoop]: trace histogram [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 19:58:36,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 19:58:36,317 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:58:36,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:58:36,318 INFO L85 PathProgramCache]: Analyzing trace with hash 934667471, now seen corresponding path program 1 times [2021-11-25 19:58:36,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:58:36,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611476039] [2021-11-25 19:58:36,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:58:36,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:58:36,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:58:36,399 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-25 19:58:36,399 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:58:36,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611476039] [2021-11-25 19:58:36,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611476039] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:58:36,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:58:36,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:58:36,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894549392] [2021-11-25 19:58:36,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:58:36,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:58:36,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:58:36,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:58:36,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:58:36,402 INFO L87 Difference]: Start difference. First operand 2205 states and 4021 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 19:58:36,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:58:36,814 INFO L93 Difference]: Finished difference Result 3043 states and 5150 transitions. [2021-11-25 19:58:36,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:58:36,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 87 [2021-11-25 19:58:36,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:58:36,833 INFO L225 Difference]: With dead ends: 3043 [2021-11-25 19:58:36,833 INFO L226 Difference]: Without dead ends: 2484 [2021-11-25 19:58:36,838 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 19:58:36,840 INFO L933 BasicCegarLoop]: 3188 mSDtfsCounter, 3349 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3349 SdHoareTripleChecker+Valid, 3270 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:58:36,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3349 Valid, 3270 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:58:36,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2484 states. [2021-11-25 19:58:36,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2484 to 2474. [2021-11-25 19:58:36,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2474 states, 2252 states have (on average 1.813943161634103) internal successors, (4085), 2261 states have internal predecessors, (4085), 142 states have call successors, (142), 79 states have call predecessors, (142), 78 states have return successors, (140), 134 states have call predecessors, (140), 140 states have call successors, (140) [2021-11-25 19:58:36,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 4367 transitions. [2021-11-25 19:58:36,956 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 4367 transitions. Word has length 87 [2021-11-25 19:58:36,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:58:36,957 INFO L470 AbstractCegarLoop]: Abstraction has 2474 states and 4367 transitions. [2021-11-25 19:58:36,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 19:58:36,958 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 4367 transitions. [2021-11-25 19:58:36,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-25 19:58:36,964 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:58:36,964 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:58:36,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 19:58:36,964 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:58:36,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:58:36,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1788899467, now seen corresponding path program 1 times [2021-11-25 19:58:36,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:58:36,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747147483] [2021-11-25 19:58:36,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:58:36,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:58:36,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:58:37,060 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-25 19:58:37,060 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:58:37,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747147483] [2021-11-25 19:58:37,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747147483] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:58:37,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755846853] [2021-11-25 19:58:37,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:58:37,061 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:58:37,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:58:37,064 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:58:37,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 19:58:37,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:58:37,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 19:58:37,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:58:37,339 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 19:58:37,339 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:58:37,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755846853] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:58:37,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:58:37,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-11-25 19:58:37,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173086069] [2021-11-25 19:58:37,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:58:37,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:58:37,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:58:37,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:58:37,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:58:37,342 INFO L87 Difference]: Start difference. First operand 2474 states and 4367 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 19:58:37,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:58:37,831 INFO L93 Difference]: Finished difference Result 3213 states and 5363 transitions. [2021-11-25 19:58:37,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:58:37,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 99 [2021-11-25 19:58:37,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:58:37,849 INFO L225 Difference]: With dead ends: 3213 [2021-11-25 19:58:37,849 INFO L226 Difference]: Without dead ends: 2655 [2021-11-25 19:58:37,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 99 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 19:58:37,853 INFO L933 BasicCegarLoop]: 3187 mSDtfsCounter, 52 mSDsluCounter, 3377 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 6338 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:58:37,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 6338 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 19:58:37,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2655 states. [2021-11-25 19:58:37,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2655 to 2553. [2021-11-25 19:58:37,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2553 states, 2319 states have (on average 1.8055196205260888) internal successors, (4187), 2328 states have internal predecessors, (4187), 148 states have call successors, (148), 85 states have call predecessors, (148), 84 states have return successors, (146), 140 states have call predecessors, (146), 146 states have call successors, (146) [2021-11-25 19:58:38,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2553 states to 2553 states and 4481 transitions. [2021-11-25 19:58:38,094 INFO L78 Accepts]: Start accepts. Automaton has 2553 states and 4481 transitions. Word has length 99 [2021-11-25 19:58:38,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:58:38,095 INFO L470 AbstractCegarLoop]: Abstraction has 2553 states and 4481 transitions. [2021-11-25 19:58:38,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 19:58:38,096 INFO L276 IsEmpty]: Start isEmpty. Operand 2553 states and 4481 transitions. [2021-11-25 19:58:38,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-25 19:58:38,100 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:58:38,100 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:58:38,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 19:58:38,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:58:38,308 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:58:38,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:58:38,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1679988491, now seen corresponding path program 2 times [2021-11-25 19:58:38,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:58:38,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084903923] [2021-11-25 19:58:38,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:58:38,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:58:38,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:58:38,418 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 10 proven. 21 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-25 19:58:38,418 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:58:38,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084903923] [2021-11-25 19:58:38,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084903923] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:58:38,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441108965] [2021-11-25 19:58:38,419 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:58:38,420 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:58:38,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:58:38,424 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:58:38,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 19:58:38,523 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-25 19:58:38,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:58:38,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:58:38,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:58:38,687 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-25 19:58:38,687 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:58:38,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441108965] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:58:38,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:58:38,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-11-25 19:58:38,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33148654] [2021-11-25 19:58:38,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:58:38,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:58:38,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:58:38,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:58:38,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:58:38,694 INFO L87 Difference]: Start difference. First operand 2553 states and 4481 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 19:58:39,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:58:39,207 INFO L93 Difference]: Finished difference Result 3198 states and 5385 transitions. [2021-11-25 19:58:39,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:58:39,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 99 [2021-11-25 19:58:39,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:58:39,225 INFO L225 Difference]: With dead ends: 3198 [2021-11-25 19:58:39,225 INFO L226 Difference]: Without dead ends: 2561 [2021-11-25 19:58:39,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 101 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 19:58:39,229 INFO L933 BasicCegarLoop]: 3194 mSDtfsCounter, 92 mSDsluCounter, 3367 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 6333 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:58:39,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 6333 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 19:58:39,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2561 states. [2021-11-25 19:58:39,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2561 to 2549. [2021-11-25 19:58:39,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2549 states, 2315 states have (on average 1.7982721382289417) internal successors, (4163), 2324 states have internal predecessors, (4163), 148 states have call successors, (148), 85 states have call predecessors, (148), 84 states have return successors, (146), 140 states have call predecessors, (146), 146 states have call successors, (146) [2021-11-25 19:58:39,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2549 states to 2549 states and 4457 transitions. [2021-11-25 19:58:39,346 INFO L78 Accepts]: Start accepts. Automaton has 2549 states and 4457 transitions. Word has length 99 [2021-11-25 19:58:39,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:58:39,346 INFO L470 AbstractCegarLoop]: Abstraction has 2549 states and 4457 transitions. [2021-11-25 19:58:39,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 19:58:39,347 INFO L276 IsEmpty]: Start isEmpty. Operand 2549 states and 4457 transitions. [2021-11-25 19:58:39,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-25 19:58:39,351 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:58:39,351 INFO L514 BasicCegarLoop]: trace histogram [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 19:58:39,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 19:58:39,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:58:39,574 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:58:39,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:58:39,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1685620309, now seen corresponding path program 1 times [2021-11-25 19:58:39,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:58:39,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118125156] [2021-11-25 19:58:39,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:58:39,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:58:39,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:58:39,661 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 19 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-25 19:58:39,661 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:58:39,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118125156] [2021-11-25 19:58:39,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118125156] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:58:39,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182013010] [2021-11-25 19:58:39,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:58:39,662 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:58:39,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:58:39,663 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:58:39,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 19:58:39,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:58:39,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 19:58:39,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:58:39,938 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-25 19:58:39,938 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:58:39,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182013010] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:58:39,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:58:39,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-11-25 19:58:39,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135917353] [2021-11-25 19:58:39,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:58:39,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:58:39,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:58:39,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:58:39,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:58:39,945 INFO L87 Difference]: Start difference. First operand 2549 states and 4457 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 19:58:40,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:58:40,359 INFO L93 Difference]: Finished difference Result 3331 states and 5474 transitions. [2021-11-25 19:58:40,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:58:40,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 99 [2021-11-25 19:58:40,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:58:40,378 INFO L225 Difference]: With dead ends: 3331 [2021-11-25 19:58:40,378 INFO L226 Difference]: Without dead ends: 2725 [2021-11-25 19:58:40,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 101 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 19:58:40,382 INFO L933 BasicCegarLoop]: 3156 mSDtfsCounter, 3359 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3359 SdHoareTripleChecker+Valid, 3175 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:58:40,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3359 Valid, 3175 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:58:40,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2725 states. [2021-11-25 19:58:40,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2725 to 2725. [2021-11-25 19:58:40,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2725 states, 2463 states have (on average 1.7576126674786845) internal successors, (4329), 2472 states have internal predecessors, (4329), 156 states have call successors, (156), 105 states have call predecessors, (156), 104 states have return successors, (154), 148 states have call predecessors, (154), 154 states have call successors, (154) [2021-11-25 19:58:40,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2725 states to 2725 states and 4639 transitions. [2021-11-25 19:58:40,515 INFO L78 Accepts]: Start accepts. Automaton has 2725 states and 4639 transitions. Word has length 99 [2021-11-25 19:58:40,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:58:40,516 INFO L470 AbstractCegarLoop]: Abstraction has 2725 states and 4639 transitions. [2021-11-25 19:58:40,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 19:58:40,516 INFO L276 IsEmpty]: Start isEmpty. Operand 2725 states and 4639 transitions. [2021-11-25 19:58:40,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-25 19:58:40,521 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:58:40,521 INFO L514 BasicCegarLoop]: trace histogram [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 19:58:40,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 19:58:40,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:58:40,736 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:58:40,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:58:40,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1848697004, now seen corresponding path program 1 times [2021-11-25 19:58:40,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:58:40,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974236368] [2021-11-25 19:58:40,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:58:40,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:58:40,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:58:40,802 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-25 19:58:40,803 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:58:40,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974236368] [2021-11-25 19:58:40,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974236368] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:58:40,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764580772] [2021-11-25 19:58:40,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:58:40,804 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:58:40,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:58:40,808 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:58:40,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 19:58:40,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:58:40,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:58:40,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:58:41,102 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-25 19:58:41,102 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:58:41,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764580772] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:58:41,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:58:41,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-11-25 19:58:41,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823817180] [2021-11-25 19:58:41,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:58:41,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:58:41,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:58:41,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:58:41,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:58:41,105 INFO L87 Difference]: Start difference. First operand 2725 states and 4639 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 19:58:41,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:58:41,633 INFO L93 Difference]: Finished difference Result 4207 states and 6540 transitions. [2021-11-25 19:58:41,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:58:41,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 100 [2021-11-25 19:58:41,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:58:41,667 INFO L225 Difference]: With dead ends: 4207 [2021-11-25 19:58:41,668 INFO L226 Difference]: Without dead ends: 3129 [2021-11-25 19:58:41,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 102 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 19:58:41,675 INFO L933 BasicCegarLoop]: 3167 mSDtfsCounter, 48 mSDsluCounter, 3359 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 6301 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:58:41,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 6301 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 19:58:41,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3129 states. [2021-11-25 19:58:41,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3129 to 2841. [2021-11-25 19:58:41,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2841 states, 2559 states have (on average 1.7456037514654161) internal successors, (4467), 2569 states have internal predecessors, (4467), 166 states have call successors, (166), 115 states have call predecessors, (166), 114 states have return successors, (164), 157 states have call predecessors, (164), 164 states have call successors, (164) [2021-11-25 19:58:41,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2841 states to 2841 states and 4797 transitions. [2021-11-25 19:58:41,841 INFO L78 Accepts]: Start accepts. Automaton has 2841 states and 4797 transitions. Word has length 100 [2021-11-25 19:58:41,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:58:41,842 INFO L470 AbstractCegarLoop]: Abstraction has 2841 states and 4797 transitions. [2021-11-25 19:58:41,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 19:58:41,843 INFO L276 IsEmpty]: Start isEmpty. Operand 2841 states and 4797 transitions. [2021-11-25 19:58:41,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-25 19:58:41,852 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:58:41,852 INFO L514 BasicCegarLoop]: trace histogram [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 19:58:41,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 19:58:42,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-25 19:58:42,068 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:58:42,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:58:42,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1329117843, now seen corresponding path program 1 times [2021-11-25 19:58:42,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:58:42,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418395649] [2021-11-25 19:58:42,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:58:42,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:58:42,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:58:42,138 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 20 proven. 3 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-11-25 19:58:42,138 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:58:42,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418395649] [2021-11-25 19:58:42,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418395649] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:58:42,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364638298] [2021-11-25 19:58:42,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:58:42,139 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:58:42,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:58:42,140 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:58:42,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 19:58:42,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:58:42,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 19:58:42,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:58:42,489 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 19:58:42,490 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:58:42,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364638298] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:58:42,490 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:58:42,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-11-25 19:58:42,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989030400] [2021-11-25 19:58:42,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:58:42,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:58:42,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:58:42,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:58:42,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:58:42,495 INFO L87 Difference]: Start difference. First operand 2841 states and 4797 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 19:58:43,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:58:43,043 INFO L93 Difference]: Finished difference Result 3881 states and 6149 transitions. [2021-11-25 19:58:43,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:58:43,044 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 101 [2021-11-25 19:58:43,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:58:43,068 INFO L225 Difference]: With dead ends: 3881 [2021-11-25 19:58:43,068 INFO L226 Difference]: Without dead ends: 3260 [2021-11-25 19:58:43,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 101 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 19:58:43,072 INFO L933 BasicCegarLoop]: 3206 mSDtfsCounter, 56 mSDsluCounter, 3376 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 6356 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:58:43,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 6356 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 19:58:43,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3260 states. [2021-11-25 19:58:43,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3260 to 3009. [2021-11-25 19:58:43,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3009 states, 2695 states have (on average 1.72430426716141) internal successors, (4647), 2705 states have internal predecessors, (4647), 182 states have call successors, (182), 131 states have call predecessors, (182), 130 states have return successors, (180), 173 states have call predecessors, (180), 180 states have call successors, (180) [2021-11-25 19:58:43,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3009 states to 3009 states and 5009 transitions. [2021-11-25 19:58:43,328 INFO L78 Accepts]: Start accepts. Automaton has 3009 states and 5009 transitions. Word has length 101 [2021-11-25 19:58:43,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:58:43,329 INFO L470 AbstractCegarLoop]: Abstraction has 3009 states and 5009 transitions. [2021-11-25 19:58:43,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 19:58:43,329 INFO L276 IsEmpty]: Start isEmpty. Operand 3009 states and 5009 transitions. [2021-11-25 19:58:43,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-25 19:58:43,334 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:58:43,334 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-25 19:58:43,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-25 19:58:43,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-25 19:58:43,556 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:58:43,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:58:43,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1548947729, now seen corresponding path program 1 times [2021-11-25 19:58:43,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:58:43,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799979152] [2021-11-25 19:58:43,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:58:43,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:58:43,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:58:43,631 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 17 proven. 20 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-25 19:58:43,632 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:58:43,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799979152] [2021-11-25 19:58:43,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799979152] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:58:43,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267205955] [2021-11-25 19:58:43,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:58:43,633 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:58:43,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:58:43,636 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:58:43,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-25 19:58:43,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:58:43,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-25 19:58:43,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:58:43,948 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-25 19:58:43,948 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:58:43,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267205955] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:58:43,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:58:43,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 6 [2021-11-25 19:58:43,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345969850] [2021-11-25 19:58:43,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:58:43,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:58:43,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:58:43,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:58:43,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:58:43,951 INFO L87 Difference]: Start difference. First operand 3009 states and 5009 transitions. Second operand has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 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 19:58:44,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:58:44,769 INFO L93 Difference]: Finished difference Result 4904 states and 7404 transitions. [2021-11-25 19:58:44,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 19:58:44,770 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 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 101 [2021-11-25 19:58:44,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:58:44,781 INFO L225 Difference]: With dead ends: 4904 [2021-11-25 19:58:44,781 INFO L226 Difference]: Without dead ends: 3542 [2021-11-25 19:58:44,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-25 19:58:44,786 INFO L933 BasicCegarLoop]: 3166 mSDtfsCounter, 3498 mSDsluCounter, 6724 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3509 SdHoareTripleChecker+Valid, 9432 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:58:44,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3509 Valid, 9432 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 19:58:44,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3542 states. [2021-11-25 19:58:44,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3542 to 3538. [2021-11-25 19:58:44,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3538 states, 3096 states have (on average 1.6563307493540051) internal successors, (5128), 3109 states have internal predecessors, (5128), 256 states have call successors, (256), 185 states have call predecessors, (256), 184 states have return successors, (254), 244 states have call predecessors, (254), 254 states have call successors, (254) [2021-11-25 19:58:44,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3538 states to 3538 states and 5638 transitions. [2021-11-25 19:58:44,950 INFO L78 Accepts]: Start accepts. Automaton has 3538 states and 5638 transitions. Word has length 101 [2021-11-25 19:58:44,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:58:44,951 INFO L470 AbstractCegarLoop]: Abstraction has 3538 states and 5638 transitions. [2021-11-25 19:58:44,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 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 19:58:44,951 INFO L276 IsEmpty]: Start isEmpty. Operand 3538 states and 5638 transitions. [2021-11-25 19:58:44,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-25 19:58:44,957 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:58:44,957 INFO L514 BasicCegarLoop]: trace histogram [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 19:58:44,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-25 19:58:45,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:58:45,184 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:58:45,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:58:45,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1348845533, now seen corresponding path program 1 times [2021-11-25 19:58:45,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:58:45,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347156643] [2021-11-25 19:58:45,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:58:45,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:58:45,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:58:45,427 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-11-25 19:58:45,427 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:58:45,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347156643] [2021-11-25 19:58:45,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347156643] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:58:45,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035470091] [2021-11-25 19:58:45,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:58:45,428 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:58:45,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:58:45,429 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:58:45,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-25 19:58:45,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:58:45,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-25 19:58:45,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:58:45,977 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 43 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-25 19:58:45,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:58:46,326 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-11-25 19:58:46,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035470091] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:58:46,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [555354523] [2021-11-25 19:58:46,348 INFO L159 IcfgInterpreter]: Started Sifa with 57 locations of interest [2021-11-25 19:58:46,349 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:58:46,353 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:58:46,359 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:58:46,359 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:58:57,527 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 73 for LOIs [2021-11-25 19:58:57,536 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 115 for LOIs [2021-11-25 19:58:57,568 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-11-25 19:58:57,583 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-11-25 19:58:58,860 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 115 for LOIs [2021-11-25 19:58:58,881 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 103 for LOIs [2021-11-25 19:58:58,889 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 116 for LOIs [2021-11-25 19:58:58,916 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 124 for LOIs [2021-11-25 19:58:59,394 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 118 for LOIs [2021-11-25 19:58:59,879 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:59:15,872 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '80369#(and (= ~a15~0 1) (= 5 ~a20~0) (<= ~local~0 2147483647) (= ~t1_pc~0 0) (= ~t1_i~0 1) (= ~a25~0 1) (not (= ~token~0 (+ 2 ~local~0))) (<= 0 (+ ~local~0 2147483648)) (= 2 ~t2_st~0) (= ~a~0 1) (= ~d~0 4) (= ~a16~0 1) (= 5 ~e~0) (= ~t2_pc~0 1) (= ~m_pc~0 1) (= ~m_i~0 1) (= ~a12~0 4) (<= ~token~0 2147483648) (= ~a9~0 18) (= 6 ~f~0) (= 3 ~c~0) (= ~t2_i~0 1) (= 2 ~b~0) (= ~m_st~0 1) (= |#NULL.offset| 0) (= ~a27~0 1) (<= 0 (+ ~token~0 2147483648)) (<= 0 |#StackHeapBarrier|) (= ~a2~0 10) (= |#NULL.base| 0))' at error location [2021-11-25 19:59:15,872 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:59:15,873 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:59:15,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 4] total 17 [2021-11-25 19:59:15,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925000427] [2021-11-25 19:59:15,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:59:15,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-25 19:59:15,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:59:15,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-25 19:59:15,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=3553, Unknown=0, NotChecked=0, Total=3906 [2021-11-25 19:59:15,876 INFO L87 Difference]: Start difference. First operand 3538 states and 5638 transitions. Second operand has 17 states, 12 states have (on average 9.75) internal successors, (117), 13 states have internal predecessors, (117), 8 states have call successors, (24), 8 states have call predecessors, (24), 10 states have return successors, (24), 9 states have call predecessors, (24), 8 states have call successors, (24) [2021-11-25 19:59:19,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:59:19,112 INFO L93 Difference]: Finished difference Result 9119 states and 12841 transitions. [2021-11-25 19:59:19,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-25 19:59:19,113 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 12 states have (on average 9.75) internal successors, (117), 13 states have internal predecessors, (117), 8 states have call successors, (24), 8 states have call predecessors, (24), 10 states have return successors, (24), 9 states have call predecessors, (24), 8 states have call successors, (24) Word has length 102 [2021-11-25 19:59:19,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:59:19,138 INFO L225 Difference]: With dead ends: 9119 [2021-11-25 19:59:19,138 INFO L226 Difference]: Without dead ends: 7505 [2021-11-25 19:59:19,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 262 SyntacticMatches, 5 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2712 ImplicationChecksByTransitivity, 16.8s TimeCoverageRelationStatistics Valid=672, Invalid=5970, Unknown=0, NotChecked=0, Total=6642 [2021-11-25 19:59:19,149 INFO L933 BasicCegarLoop]: 3168 mSDtfsCounter, 11136 mSDsluCounter, 26921 mSDsCounter, 0 mSdLazyCounter, 3349 mSolverCounterSat, 770 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11156 SdHoareTripleChecker+Valid, 28268 SdHoareTripleChecker+Invalid, 4119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 770 IncrementalHoareTripleChecker+Valid, 3349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:59:19,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11156 Valid, 28268 Invalid, 4119 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [770 Valid, 3349 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-25 19:59:19,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7505 states. [2021-11-25 19:59:19,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7505 to 5718. [2021-11-25 19:59:19,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5718 states, 4804 states have (on average 1.5066611157368859) internal successors, (7238), 4827 states have internal predecessors, (7238), 518 states have call successors, (518), 395 states have call predecessors, (518), 394 states have return successors, (516), 496 states have call predecessors, (516), 516 states have call successors, (516) [2021-11-25 19:59:19,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5718 states to 5718 states and 8272 transitions. [2021-11-25 19:59:19,518 INFO L78 Accepts]: Start accepts. Automaton has 5718 states and 8272 transitions. Word has length 102 [2021-11-25 19:59:19,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:59:19,518 INFO L470 AbstractCegarLoop]: Abstraction has 5718 states and 8272 transitions. [2021-11-25 19:59:19,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 12 states have (on average 9.75) internal successors, (117), 13 states have internal predecessors, (117), 8 states have call successors, (24), 8 states have call predecessors, (24), 10 states have return successors, (24), 9 states have call predecessors, (24), 8 states have call successors, (24) [2021-11-25 19:59:19,519 INFO L276 IsEmpty]: Start isEmpty. Operand 5718 states and 8272 transitions. [2021-11-25 19:59:19,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-25 19:59:19,525 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:59:19,526 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:59:19,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-25 19:59:19,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:59:19,740 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:59:19,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:59:19,740 INFO L85 PathProgramCache]: Analyzing trace with hash -899746115, now seen corresponding path program 1 times [2021-11-25 19:59:19,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:59:19,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541723916] [2021-11-25 19:59:19,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:59:19,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:59:19,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:59:19,803 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 28 proven. 5 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-25 19:59:19,803 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:59:19,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541723916] [2021-11-25 19:59:19,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541723916] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:59:19,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423490851] [2021-11-25 19:59:19,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:59:19,804 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:59:19,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:59:19,805 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:59:19,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-25 19:59:19,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:59:19,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:59:19,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:59:20,043 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-25 19:59:20,044 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:59:20,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423490851] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:59:20,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:59:20,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2021-11-25 19:59:20,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393654146] [2021-11-25 19:59:20,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:59:20,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:59:20,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:59:20,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:59:20,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:59:20,046 INFO L87 Difference]: Start difference. First operand 5718 states and 8272 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 19:59:20,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:59:20,656 INFO L93 Difference]: Finished difference Result 8811 states and 12222 transitions. [2021-11-25 19:59:20,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:59:20,657 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 102 [2021-11-25 19:59:20,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:59:20,674 INFO L225 Difference]: With dead ends: 8811 [2021-11-25 19:59:20,674 INFO L226 Difference]: Without dead ends: 5720 [2021-11-25 19:59:20,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 103 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 19:59:20,684 INFO L933 BasicCegarLoop]: 3223 mSDtfsCounter, 79 mSDsluCounter, 3366 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 6361 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:59:20,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 6361 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 19:59:20,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5720 states. [2021-11-25 19:59:20,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5720 to 5658. [2021-11-25 19:59:20,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5658 states, 4744 states have (on average 1.4839797639123102) internal successors, (7040), 4767 states have internal predecessors, (7040), 518 states have call successors, (518), 395 states have call predecessors, (518), 394 states have return successors, (516), 496 states have call predecessors, (516), 516 states have call successors, (516) [2021-11-25 19:59:20,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5658 states to 5658 states and 8074 transitions. [2021-11-25 19:59:20,992 INFO L78 Accepts]: Start accepts. Automaton has 5658 states and 8074 transitions. Word has length 102 [2021-11-25 19:59:20,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:59:20,993 INFO L470 AbstractCegarLoop]: Abstraction has 5658 states and 8074 transitions. [2021-11-25 19:59:20,993 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 19:59:20,993 INFO L276 IsEmpty]: Start isEmpty. Operand 5658 states and 8074 transitions. [2021-11-25 19:59:20,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-25 19:59:20,998 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:59:20,999 INFO L514 BasicCegarLoop]: trace histogram [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 19:59:21,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-25 19:59:21,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-25 19:59:21,224 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:59:21,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:59:21,224 INFO L85 PathProgramCache]: Analyzing trace with hash -14759137, now seen corresponding path program 1 times [2021-11-25 19:59:21,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:59:21,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645166249] [2021-11-25 19:59:21,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:59:21,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:59:21,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:59:21,329 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 34 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-25 19:59:21,330 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:59:21,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645166249] [2021-11-25 19:59:21,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645166249] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:59:21,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19131232] [2021-11-25 19:59:21,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:59:21,331 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:59:21,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:59:21,332 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:59:21,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-25 19:59:21,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:59:21,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 19:59:21,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:59:21,630 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-25 19:59:21,630 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:59:21,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19131232] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:59:21,630 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:59:21,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2021-11-25 19:59:21,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413246023] [2021-11-25 19:59:21,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:59:21,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:59:21,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:59:21,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:59:21,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:59:21,632 INFO L87 Difference]: Start difference. First operand 5658 states and 8074 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2021-11-25 19:59:22,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:59:22,281 INFO L93 Difference]: Finished difference Result 7793 states and 10608 transitions. [2021-11-25 19:59:22,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:59:22,282 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) Word has length 103 [2021-11-25 19:59:22,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:59:22,309 INFO L225 Difference]: With dead ends: 7793 [2021-11-25 19:59:22,309 INFO L226 Difference]: Without dead ends: 6694 [2021-11-25 19:59:22,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:59:22,316 INFO L933 BasicCegarLoop]: 3203 mSDtfsCounter, 6677 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6677 SdHoareTripleChecker+Valid, 3282 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:59:22,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6677 Valid, 3282 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 19:59:22,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6694 states. [2021-11-25 19:59:22,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6694 to 5975. [2021-11-25 19:59:22,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5975 states, 5035 states have (on average 1.4542204568023833) internal successors, (7322), 5058 states have internal predecessors, (7322), 518 states have call successors, (518), 421 states have call predecessors, (518), 420 states have return successors, (524), 496 states have call predecessors, (524), 516 states have call successors, (524) [2021-11-25 19:59:22,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5975 states to 5975 states and 8364 transitions. [2021-11-25 19:59:22,744 INFO L78 Accepts]: Start accepts. Automaton has 5975 states and 8364 transitions. Word has length 103 [2021-11-25 19:59:22,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:59:22,744 INFO L470 AbstractCegarLoop]: Abstraction has 5975 states and 8364 transitions. [2021-11-25 19:59:22,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2021-11-25 19:59:22,745 INFO L276 IsEmpty]: Start isEmpty. Operand 5975 states and 8364 transitions. [2021-11-25 19:59:22,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-25 19:59:22,752 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:59:22,755 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:59:22,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-25 19:59:22,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-25 19:59:22,976 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:59:22,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:59:22,976 INFO L85 PathProgramCache]: Analyzing trace with hash -484329719, now seen corresponding path program 1 times [2021-11-25 19:59:22,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:59:22,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192489254] [2021-11-25 19:59:22,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:59:22,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:59:23,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:59:23,049 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-25 19:59:23,050 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:59:23,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192489254] [2021-11-25 19:59:23,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192489254] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:59:23,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:59:23,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:59:23,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797621505] [2021-11-25 19:59:23,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:59:23,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:59:23,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:59:23,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:59:23,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:59:23,053 INFO L87 Difference]: Start difference. First operand 5975 states and 8364 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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 19:59:23,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:59:23,876 INFO L93 Difference]: Finished difference Result 9311 states and 12323 transitions. [2021-11-25 19:59:23,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:59:23,876 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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 104 [2021-11-25 19:59:23,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:59:23,899 INFO L225 Difference]: With dead ends: 9311 [2021-11-25 19:59:23,899 INFO L226 Difference]: Without dead ends: 7143 [2021-11-25 19:59:23,907 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 19:59:23,908 INFO L933 BasicCegarLoop]: 3193 mSDtfsCounter, 76 mSDsluCounter, 10069 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 12575 SdHoareTripleChecker+Invalid, 1106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:59:23,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 12575 Invalid, 1106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 19:59:23,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7143 states. [2021-11-25 19:59:24,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7143 to 7003. [2021-11-25 19:59:24,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7003 states, 5771 states have (on average 1.4075550164616184) internal successors, (8123), 5807 states have internal predecessors, (8123), 685 states have call successors, (685), 544 states have call predecessors, (685), 545 states have return successors, (715), 652 states have call predecessors, (715), 683 states have call successors, (715) [2021-11-25 19:59:24,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7003 states to 7003 states and 9523 transitions. [2021-11-25 19:59:24,334 INFO L78 Accepts]: Start accepts. Automaton has 7003 states and 9523 transitions. Word has length 104 [2021-11-25 19:59:24,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:59:24,335 INFO L470 AbstractCegarLoop]: Abstraction has 7003 states and 9523 transitions. [2021-11-25 19:59:24,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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 19:59:24,335 INFO L276 IsEmpty]: Start isEmpty. Operand 7003 states and 9523 transitions. [2021-11-25 19:59:24,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-25 19:59:24,340 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:59:24,341 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:59:24,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-25 19:59:24,341 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:59:24,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:59:24,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1130106033, now seen corresponding path program 1 times [2021-11-25 19:59:24,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:59:24,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891398790] [2021-11-25 19:59:24,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:59:24,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:59:24,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:59:24,432 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 36 proven. 14 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-25 19:59:24,433 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:59:24,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891398790] [2021-11-25 19:59:24,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891398790] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:59:24,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647679976] [2021-11-25 19:59:24,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:59:24,434 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:59:24,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:59:24,438 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:59:24,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-25 19:59:24,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:59:24,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-25 19:59:24,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:59:24,708 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:59:24,708 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:59:24,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647679976] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:59:24,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:59:24,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 6 [2021-11-25 19:59:24,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961478710] [2021-11-25 19:59:24,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:59:24,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:59:24,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:59:24,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:59:24,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:59:24,711 INFO L87 Difference]: Start difference. First operand 7003 states and 9523 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 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 19:59:25,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:59:25,652 INFO L93 Difference]: Finished difference Result 9871 states and 12862 transitions. [2021-11-25 19:59:25,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 19:59:25,653 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 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 104 [2021-11-25 19:59:25,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:59:25,670 INFO L225 Difference]: With dead ends: 9871 [2021-11-25 19:59:25,670 INFO L226 Difference]: Without dead ends: 5774 [2021-11-25 19:59:25,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 111 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 19:59:25,681 INFO L933 BasicCegarLoop]: 3195 mSDtfsCounter, 179 mSDsluCounter, 9993 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 12521 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:59:25,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 12521 Invalid, 1091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 19:59:25,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5774 states. [2021-11-25 19:59:25,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5774 to 5215. [2021-11-25 19:59:25,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5215 states, 4388 states have (on average 1.4744758432087512) internal successors, (6470), 4408 states have internal predecessors, (6470), 463 states have call successors, (463), 369 states have call predecessors, (463), 362 states have return successors, (485), 438 states have call predecessors, (485), 461 states have call successors, (485) [2021-11-25 19:59:25,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5215 states to 5215 states and 7418 transitions. [2021-11-25 19:59:25,982 INFO L78 Accepts]: Start accepts. Automaton has 5215 states and 7418 transitions. Word has length 104 [2021-11-25 19:59:25,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:59:25,982 INFO L470 AbstractCegarLoop]: Abstraction has 5215 states and 7418 transitions. [2021-11-25 19:59:25,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 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 19:59:25,983 INFO L276 IsEmpty]: Start isEmpty. Operand 5215 states and 7418 transitions. [2021-11-25 19:59:25,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-25 19:59:25,988 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:59:25,989 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:59:26,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-25 19:59:26,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:59:26,204 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:59:26,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:59:26,204 INFO L85 PathProgramCache]: Analyzing trace with hash 907514321, now seen corresponding path program 1 times [2021-11-25 19:59:26,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:59:26,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988248746] [2021-11-25 19:59:26,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:59:26,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:59:26,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:59:26,294 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-25 19:59:26,294 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:59:26,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988248746] [2021-11-25 19:59:26,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988248746] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:59:26,294 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:59:26,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:59:26,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910226340] [2021-11-25 19:59:26,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:59:26,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:59:26,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:59:26,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:59:26,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:59:26,297 INFO L87 Difference]: Start difference. First operand 5215 states and 7418 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 5 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-11-25 19:59:27,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:59:27,547 INFO L93 Difference]: Finished difference Result 13147 states and 16712 transitions. [2021-11-25 19:59:27,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:59:27,548 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 5 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 128 [2021-11-25 19:59:27,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:59:27,582 INFO L225 Difference]: With dead ends: 13147 [2021-11-25 19:59:27,582 INFO L226 Difference]: Without dead ends: 11337 [2021-11-25 19:59:27,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:59:27,590 INFO L933 BasicCegarLoop]: 3295 mSDtfsCounter, 3512 mSDsluCounter, 6958 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3512 SdHoareTripleChecker+Valid, 9753 SdHoareTripleChecker+Invalid, 951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:59:27,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3512 Valid, 9753 Invalid, 951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 19:59:27,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11337 states. [2021-11-25 19:59:28,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11337 to 9673. [2021-11-25 19:59:28,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9673 states, 7762 states have (on average 1.3390878639525896) internal successors, (10394), 7788 states have internal predecessors, (10394), 1083 states have call successors, (1083), 853 states have call predecessors, (1083), 826 states have return successors, (1169), 1032 states have call predecessors, (1169), 1081 states have call successors, (1169) [2021-11-25 19:59:28,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9673 states to 9673 states and 12646 transitions. [2021-11-25 19:59:28,252 INFO L78 Accepts]: Start accepts. Automaton has 9673 states and 12646 transitions. Word has length 128 [2021-11-25 19:59:28,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:59:28,253 INFO L470 AbstractCegarLoop]: Abstraction has 9673 states and 12646 transitions. [2021-11-25 19:59:28,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 5 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-11-25 19:59:28,253 INFO L276 IsEmpty]: Start isEmpty. Operand 9673 states and 12646 transitions. [2021-11-25 19:59:28,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-25 19:59:28,268 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:59:28,268 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:59:28,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-25 19:59:28,269 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:59:28,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:59:28,269 INFO L85 PathProgramCache]: Analyzing trace with hash -713986447, now seen corresponding path program 1 times [2021-11-25 19:59:28,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:59:28,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249566687] [2021-11-25 19:59:28,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:59:28,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:59:28,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 19:59:28,314 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 19:59:28,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 19:59:28,442 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-25 19:59:28,443 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 19:59:28,444 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-25 19:59:28,445 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-25 19:59:28,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-25 19:59:28,449 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:59:28,454 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 19:59:28,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 07:59:28 BoogieIcfgContainer [2021-11-25 19:59:28,650 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 19:59:28,650 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 19:59:28,650 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 19:59:28,651 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 19:59:28,651 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:58:31" (3/4) ... [2021-11-25 19:59:28,653 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-25 19:59:28,809 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/bin/utaipan-eEHZpOm5b7/witness.graphml [2021-11-25 19:59:28,810 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 19:59:28,812 INFO L158 Benchmark]: Toolchain (without parser) took 72215.30ms. Allocated memory was 90.2MB in the beginning and 2.1GB in the end (delta: 2.1GB). Free memory was 56.8MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 753.3MB. Max. memory is 16.1GB. [2021-11-25 19:59:28,812 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 90.2MB. Free memory is still 65.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:59:28,813 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4134.02ms. Allocated memory was 90.2MB in the beginning and 163.6MB in the end (delta: 73.4MB). Free memory was 56.5MB in the beginning and 57.0MB in the end (delta: -420.0kB). Peak memory consumption was 96.1MB. Max. memory is 16.1GB. [2021-11-25 19:59:28,814 INFO L158 Benchmark]: Boogie Procedure Inliner took 829.85ms. Allocated memory was 163.6MB in the beginning and 262.1MB in the end (delta: 98.6MB). Free memory was 57.0MB in the beginning and 145.5MB in the end (delta: -88.5MB). Peak memory consumption was 67.6MB. Max. memory is 16.1GB. [2021-11-25 19:59:28,814 INFO L158 Benchmark]: Boogie Preprocessor took 499.96ms. Allocated memory is still 262.1MB. Free memory was 145.4MB in the beginning and 123.2MB in the end (delta: 22.2MB). Peak memory consumption was 74.4MB. Max. memory is 16.1GB. [2021-11-25 19:59:28,815 INFO L158 Benchmark]: RCFGBuilder took 9570.43ms. Allocated memory was 262.1MB in the beginning and 864.0MB in the end (delta: 601.9MB). Free memory was 123.2MB in the beginning and 325.7MB in the end (delta: -202.5MB). Peak memory consumption was 428.6MB. Max. memory is 16.1GB. [2021-11-25 19:59:28,815 INFO L158 Benchmark]: TraceAbstraction took 57011.99ms. Allocated memory was 864.0MB in the beginning and 2.1GB in the end (delta: 1.3GB). Free memory was 324.6MB in the beginning and 1.4GB in the end (delta: -1.1GB). Peak memory consumption was 227.1MB. Max. memory is 16.1GB. [2021-11-25 19:59:28,815 INFO L158 Benchmark]: Witness Printer took 159.48ms. Allocated memory is still 2.1GB. Free memory was 1.4GB in the beginning and 1.4GB in the end (delta: 22.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-11-25 19:59:28,820 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 90.2MB. Free memory is still 65.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 4134.02ms. Allocated memory was 90.2MB in the beginning and 163.6MB in the end (delta: 73.4MB). Free memory was 56.5MB in the beginning and 57.0MB in the end (delta: -420.0kB). Peak memory consumption was 96.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 829.85ms. Allocated memory was 163.6MB in the beginning and 262.1MB in the end (delta: 98.6MB). Free memory was 57.0MB in the beginning and 145.5MB in the end (delta: -88.5MB). Peak memory consumption was 67.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 499.96ms. Allocated memory is still 262.1MB. Free memory was 145.4MB in the beginning and 123.2MB in the end (delta: 22.2MB). Peak memory consumption was 74.4MB. Max. memory is 16.1GB. * RCFGBuilder took 9570.43ms. Allocated memory was 262.1MB in the beginning and 864.0MB in the end (delta: 601.9MB). Free memory was 123.2MB in the beginning and 325.7MB in the end (delta: -202.5MB). Peak memory consumption was 428.6MB. Max. memory is 16.1GB. * TraceAbstraction took 57011.99ms. Allocated memory was 864.0MB in the beginning and 2.1GB in the end (delta: 1.3GB). Free memory was 324.6MB in the beginning and 1.4GB in the end (delta: -1.1GB). Peak memory consumption was 227.1MB. Max. memory is 16.1GB. * Witness Printer took 159.48ms. Allocated memory is still 2.1GB. Free memory was 1.4GB in the beginning and 1.4GB in the end (delta: 22.0MB). Peak memory consumption was 21.0MB. 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 m_st ; [L11181] int t1_st ; [L11182] int t2_st ; [L11183] int m_i ; [L11184] int t1_i ; [L11185] int t2_i ; [L11186] int M_E = 2; [L11187] int T1_E = 2; [L11188] int T2_E = 2; [L11189] int E_M = 2; [L11190] int E_1 = 2; [L11191] int E_2 = 2; [L11196] int token ; [L11198] int local ; [L11776] COND FALSE !(__VERIFIER_nondet_int()) [L11779] CALL main2() [L11763] int __retres1 ; [L11767] CALL init_model() [L11677] m_i = 1 [L11678] t1_i = 1 [L11679] t2_i = 1 [L11767] RET init_model() [L11768] CALL start_simulation() [L11704] int kernel_st ; [L11705] int tmp ; [L11706] int tmp___0 ; [L11710] 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_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, token=0] [L11711] 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_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, token=0] [L11712] CALL init_threads() [L11396] COND TRUE m_i == 1 [L11397] m_st = 0 [L11401] COND TRUE t1_i == 1 [L11402] t1_st = 0 [L11406] COND TRUE t2_i == 1 [L11407] t2_st = 0 [L11712] RET init_threads() [L11713] CALL fire_delta_events() VAL [\old(E_1)=2, \old(E_2)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, \old(T2_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_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, token=0] [L11509] COND FALSE !(M_E == 0) [L11514] COND FALSE !(T1_E == 0) [L11519] COND FALSE !(T2_E == 0) [L11524] COND FALSE !(E_M == 0) [L11529] COND FALSE !(E_1 == 0) [L11534] COND FALSE !(E_2 == 0) [L11713] 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_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, token=0] [L11714] CALL activate_threads() VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_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_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, token=0] [L11582] int tmp ; [L11583] int tmp___0 ; [L11584] int tmp___1 ; [L11588] CALL, EXPR is_master_triggered() [L11328] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_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_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, token=0] [L11331] COND FALSE !(m_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_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_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, token=0] [L11341] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_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_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, token=0] [L11343] return (__retres1); [L11588] RET, EXPR is_master_triggered() [L11588] tmp = is_master_triggered() [L11590] COND FALSE !(\read(tmp)) [L11596] CALL, EXPR is_transmit1_triggered() [L11347] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_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_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, token=0] [L11350] COND FALSE !(t1_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_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_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, token=0] [L11360] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_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_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, token=0] [L11362] return (__retres1); [L11596] RET, EXPR is_transmit1_triggered() [L11596] tmp___0 = is_transmit1_triggered() [L11598] COND FALSE !(\read(tmp___0)) [L11604] CALL, EXPR is_transmit2_triggered() [L11366] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_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_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, token=0] [L11369] COND FALSE !(t2_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_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_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, token=0] [L11379] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_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_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, token=0] [L11381] return (__retres1); [L11604] RET, EXPR is_transmit2_triggered() [L11604] tmp___1 = is_transmit2_triggered() [L11606] COND FALSE !(\read(tmp___1)) [L11714] 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_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, token=0] [L11715] CALL reset_delta_events() VAL [\old(E_1)=2, \old(E_2)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, \old(T2_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_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, token=0] [L11547] COND FALSE !(M_E == 1) [L11552] COND FALSE !(T1_E == 1) [L11557] COND FALSE !(T2_E == 1) [L11562] COND FALSE !(E_M == 1) [L11567] COND FALSE !(E_1 == 1) [L11572] COND FALSE !(E_2 == 1) [L11715] 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_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, token=0] [L11718] COND TRUE 1 [L11721] kernel_st = 1 [L11722] CALL eval() [L11442] 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_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, token=0] [L11446] 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_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, token=0] [L11449] 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_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, token=0] [L11416] int __retres1 ; [L11419] COND TRUE m_st == 0 [L11420] __retres1 = 1 [L11437] return (__retres1); [L11449] 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_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, token=0] [L11449] tmp = exists_runnable_thread() [L11451] 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_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, tmp=1, token=0] [L11456] COND TRUE m_st == 0 [L11457] int tmp_ndt_1; [L11458] tmp_ndt_1 = __VERIFIER_nondet_int() [L11459] 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_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, tmp=1, tmp_ndt_1=0, token=0] [L11470] COND TRUE t1_st == 0 [L11471] int tmp_ndt_2; [L11472] tmp_ndt_2 = __VERIFIER_nondet_int() [L11473] COND TRUE \read(tmp_ndt_2) [L11475] t1_st = 1 [L11476] CALL transmit1() [L11259] 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_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, token=0] [L11270] COND TRUE 1 [L11272] t1_pc = 1 [L11273] t1_st = 2 [L11476] RET transmit1() [L11484] COND TRUE t2_st == 0 [L11485] int tmp_ndt_3; [L11486] tmp_ndt_3 = __VERIFIER_nondet_int() [L11487] COND TRUE \read(tmp_ndt_3) [L11489] t2_st = 1 [L11490] CALL transmit2() [L11295] 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_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, token=0] [L11306] COND TRUE 1 [L11308] t2_pc = 1 [L11309] t2_st = 2 [L11490] RET transmit2() [L11446] 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_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, tmp=1, tmp_ndt_1=0, tmp_ndt_2=-1, tmp_ndt_3=1, token=0] [L11449] 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_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, token=0] [L11416] int __retres1 ; [L11419] COND TRUE m_st == 0 [L11420] __retres1 = 1 [L11437] return (__retres1); [L11449] 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_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, tmp=1, tmp_ndt_1=0, tmp_ndt_2=-1, tmp_ndt_3=1, token=0] [L11449] tmp = exists_runnable_thread() [L11451] 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_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, tmp=1, tmp_ndt_1=0, tmp_ndt_2=-1, tmp_ndt_3=1, token=0] [L11456] COND TRUE m_st == 0 [L11457] int tmp_ndt_1; [L11458] tmp_ndt_1 = __VERIFIER_nondet_int() [L11459] COND TRUE \read(tmp_ndt_1) [L11461] m_st = 1 [L11462] CALL master() [L11201] int tmp_var = __VERIFIER_nondet_int(); [L11203] 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_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, tmp_var=0, token=0] [L11214] COND TRUE 1 [L11217] token = __VERIFIER_nondet_int() [L11218] local = token [L11219] 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_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, tmp_var=0, token=0] [L11220] CALL immediate_notify() VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_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_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, token=0] [L11620] CALL activate_threads() VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_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_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, token=0] [L11582] int tmp ; [L11583] int tmp___0 ; [L11584] int tmp___1 ; [L11588] CALL, EXPR is_master_triggered() [L11328] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_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_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, token=0] [L11331] COND FALSE !(m_pc == 1) VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_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_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, token=0] [L11341] __retres1 = 0 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_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_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, token=0] [L11343] return (__retres1); [L11588] RET, EXPR is_master_triggered() [L11588] tmp = is_master_triggered() [L11590] COND FALSE !(\read(tmp)) [L11596] CALL, EXPR is_transmit1_triggered() [L11347] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_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_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, token=0] [L11350] COND TRUE t1_pc == 1 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_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_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, token=0] [L11351] COND TRUE E_1 == 1 [L11352] __retres1 = 1 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_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_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, token=0] [L11362] return (__retres1); [L11596] RET, EXPR is_transmit1_triggered() [L11596] tmp___0 = is_transmit1_triggered() [L11598] COND TRUE \read(tmp___0) [L11599] t1_st = 0 [L11604] CALL, EXPR is_transmit2_triggered() [L11366] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_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_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, token=0] [L11369] COND TRUE t2_pc == 1 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_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_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, token=0] [L11370] COND FALSE !(E_2 == 1) VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_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_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, token=0] [L11379] __retres1 = 0 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_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_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, token=0] [L11381] return (__retres1); [L11604] RET, EXPR is_transmit2_triggered() [L11604] tmp___1 = is_transmit2_triggered() [L11606] COND FALSE !(\read(tmp___1)) [L11620] RET activate_threads() VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_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_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, token=0] [L11220] 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_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, tmp_var=0, token=0] [L11221] E_1 = 2 [L11222] m_pc = 1 [L11223] 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_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, tmp_var=0, token=0] [L11462] RET master() [L11470] COND TRUE t1_st == 0 [L11471] int tmp_ndt_2; [L11472] tmp_ndt_2 = __VERIFIER_nondet_int() [L11473] COND TRUE \read(tmp_ndt_2) [L11475] t1_st = 1 [L11476] CALL transmit1() [L11259] 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_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, token=0] [L11262] COND TRUE t1_pc == 1 [L11278] token += 1 [L11279] 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_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, token=1] [L11280] CALL immediate_notify() VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_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_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, token=1] [L11620] CALL activate_threads() VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_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_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, token=1] [L11582] int tmp ; [L11583] int tmp___0 ; [L11584] int tmp___1 ; [L11588] CALL, EXPR is_master_triggered() [L11328] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_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_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, token=1] [L11331] COND TRUE m_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_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_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, token=1] [L11332] COND FALSE !(E_M == 1) VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_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_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, token=1] [L11341] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_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_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, token=1] [L11343] return (__retres1); [L11588] RET, EXPR is_master_triggered() [L11588] tmp = is_master_triggered() [L11590] COND FALSE !(\read(tmp)) [L11596] CALL, EXPR is_transmit1_triggered() [L11347] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_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_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, token=1] [L11350] COND TRUE t1_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_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_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, token=1] [L11351] COND FALSE !(E_1 == 1) VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_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_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, token=1] [L11360] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_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_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, token=1] [L11362] return (__retres1); [L11596] RET, EXPR is_transmit1_triggered() [L11596] tmp___0 = is_transmit1_triggered() [L11598] COND FALSE !(\read(tmp___0)) [L11604] CALL, EXPR is_transmit2_triggered() [L11366] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_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_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, token=1] [L11369] COND TRUE t2_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_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_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, token=1] [L11370] COND TRUE E_2 == 1 [L11371] __retres1 = 1 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_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_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, token=1] [L11381] return (__retres1); [L11604] RET, EXPR is_transmit2_triggered() [L11604] tmp___1 = is_transmit2_triggered() [L11606] COND TRUE \read(tmp___1) [L11607] t2_st = 0 [L11620] RET activate_threads() VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_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_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, token=1] [L11280] 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_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, token=1] [L11281] 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_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, token=1] [L11270] COND TRUE 1 [L11272] t1_pc = 1 [L11273] t1_st = 2 [L11476] RET transmit1() [L11484] COND TRUE t2_st == 0 [L11485] int tmp_ndt_3; [L11486] tmp_ndt_3 = __VERIFIER_nondet_int() [L11487] COND TRUE \read(tmp_ndt_3) [L11489] t2_st = 1 [L11490] CALL transmit2() [L11295] 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_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, token=1] [L11298] COND TRUE t2_pc == 1 [L11314] token += 1 [L11315] 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_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=1, token=2] [L11316] CALL immediate_notify() VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_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_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=1, token=2] [L11620] CALL activate_threads() VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_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_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=1, token=2] [L11582] int tmp ; [L11583] int tmp___0 ; [L11584] int tmp___1 ; [L11588] CALL, EXPR is_master_triggered() [L11328] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_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_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=1, token=2] [L11331] COND TRUE m_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_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_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=1, token=2] [L11332] COND TRUE E_M == 1 [L11333] __retres1 = 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_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_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=1, token=2] [L11343] return (__retres1); [L11588] RET, EXPR is_master_triggered() [L11588] tmp = is_master_triggered() [L11590] COND TRUE \read(tmp) [L11591] m_st = 0 [L11596] CALL, EXPR is_transmit1_triggered() [L11347] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_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_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=1, token=2] [L11350] COND TRUE t1_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_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_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=1, token=2] [L11351] COND FALSE !(E_1 == 1) VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_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_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=1, token=2] [L11360] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_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_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=1, token=2] [L11362] return (__retres1); [L11596] RET, EXPR is_transmit1_triggered() [L11596] tmp___0 = is_transmit1_triggered() [L11598] COND FALSE !(\read(tmp___0)) [L11604] CALL, EXPR is_transmit2_triggered() [L11366] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_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_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=1, token=2] [L11369] COND TRUE t2_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_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_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=1, token=2] [L11370] COND FALSE !(E_2 == 1) VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_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_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=1, token=2] [L11379] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_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_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=1, token=2] [L11381] return (__retres1); [L11604] RET, EXPR is_transmit2_triggered() [L11604] tmp___1 = is_transmit2_triggered() [L11606] COND FALSE !(\read(tmp___1)) [L11620] RET activate_threads() VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_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_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=1, token=2] [L11316] 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_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=1, token=2] [L11317] 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_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=1, token=2] [L11306] COND TRUE 1 [L11308] t2_pc = 1 [L11309] t2_st = 2 [L11490] RET transmit2() [L11446] 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_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, tmp=1, tmp_ndt_1=-2, tmp_ndt_2=-3, tmp_ndt_3=1, token=2] [L11449] 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_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, token=2] [L11416] int __retres1 ; [L11419] COND TRUE m_st == 0 [L11420] __retres1 = 1 [L11437] return (__retres1); [L11449] 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_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, tmp=1, tmp_ndt_1=-2, tmp_ndt_2=-3, tmp_ndt_3=1, token=2] [L11449] tmp = exists_runnable_thread() [L11451] 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_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, tmp=1, tmp_ndt_1=-2, tmp_ndt_2=-3, tmp_ndt_3=1, token=2] [L11456] COND TRUE m_st == 0 [L11457] int tmp_ndt_1; [L11458] tmp_ndt_1 = __VERIFIER_nondet_int() [L11459] COND TRUE \read(tmp_ndt_1) [L11461] m_st = 1 [L11462] CALL master() [L11201] int tmp_var = __VERIFIER_nondet_int(); [L11203] 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_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, tmp_var=5, token=2] [L11206] 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_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, tmp_var=5, token=2] [L11228] COND FALSE !(token != local + 2) [L11233] COND TRUE tmp_var <= 5 [L11234] 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_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, tmp_var=5, token=2] [L11239] 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_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, tmp_var=5, token=2] [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_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, tmp_var=5, token=2] [L11241] 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_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, tmp_var=5, token=2] [L11242] 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_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, token=2] [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_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, token=2] - UnprovableResult [Line: 11049]: 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, 1727 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 56.7s, OverallIterations: 18, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 14.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 42553 SdHoareTripleChecker+Valid, 9.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 42492 mSDsluCounter, 139365 SdHoareTripleChecker+Invalid, 7.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 91302 mSDsCounter, 1089 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12440 IncrementalHoareTripleChecker+Invalid, 13529 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1089 mSolverCounterUnsat, 54298 mSDtfsCounter, 12440 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1438 GetRequests, 1281 SyntacticMatches, 5 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2739 ImplicationChecksByTransitivity, 17.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9673occurred in iteration=17, InterpolantAutomatonStates: 98, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.1s AutomataMinimizationTime, 17 MinimizatonAttempts, 5724 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 2777 NumberOfCodeBlocks, 2738 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 2719 ConstructedInterpolants, 0 QuantifiedInterpolants, 4764 SizeOfPredicates, 8 NumberOfNonLiveVariables, 5042 ConjunctsInSsa, 79 ConjunctsInUnsatCore, 29 InterpolantComputations, 16 PerfectInterpolantSequences, 1481/1612 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 19:59:28,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f135142-a8a2-4c41-964c-a49e6c6d499b/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