./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.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_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/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_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/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_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/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 f91e7b856fd6bf43c568f48d1703ed519fbb708e5c1360b96f8534e6fa4ed35d --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:18:50,877 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:18:50,880 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:18:50,927 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:18:50,928 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:18:50,931 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:18:50,933 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:18:50,937 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:18:50,940 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:18:50,945 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:18:50,946 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:18:50,948 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:18:50,949 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:18:50,952 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:18:50,955 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:18:50,963 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:18:50,964 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:18:50,965 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:18:50,967 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:18:50,969 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:18:50,970 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:18:50,974 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:18:50,975 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:18:50,978 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:18:50,981 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:18:50,981 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:18:50,982 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:18:50,983 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:18:50,983 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:18:50,984 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:18:50,985 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:18:50,986 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:18:50,986 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:18:50,987 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:18:50,988 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:18:50,988 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:18:50,989 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:18:50,989 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:18:50,990 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:18:50,990 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:18:50,991 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:18:50,992 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 19:18:51,019 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:18:51,019 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:18:51,019 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:18:51,020 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:18:51,020 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:18:51,020 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:18:51,021 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:18:51,021 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:18:51,021 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:18:51,021 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:18:51,021 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:18:51,034 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:18:51,034 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:18:51,034 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:18:51,034 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:18:51,035 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:18:51,035 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:18:51,035 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:18:51,036 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:18:51,036 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:18:51,036 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:18:51,036 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:18:51,036 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:18:51,037 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:18:51,037 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:18:51,037 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:18:51,037 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:18:51,037 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:18:51,038 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:18:51,038 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:18:51,038 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:18:51,038 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:18:51,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:18:51,038 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:18:51,039 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:18:51,039 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:18:51,039 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:18:51,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:18:51,039 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:18:51,040 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:18:51,040 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:18:51,040 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_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f91e7b856fd6bf43c568f48d1703ed519fbb708e5c1360b96f8534e6fa4ed35d [2021-11-25 19:18:51,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:18:51,330 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:18:51,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:18:51,334 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:18:51,335 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:18:51,336 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2021-11-25 19:18:51,411 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/data/f4c30de44/df8098df11694e10af4c1c41ce872157/FLAGfa66c8538 [2021-11-25 19:18:51,884 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:18:51,884 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2021-11-25 19:18:51,891 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/data/f4c30de44/df8098df11694e10af4c1c41ce872157/FLAGfa66c8538 [2021-11-25 19:18:52,280 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/data/f4c30de44/df8098df11694e10af4c1c41ce872157 [2021-11-25 19:18:52,282 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:18:52,284 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:18:52,286 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:18:52,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:18:52,289 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:18:52,290 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:18:52" (1/1) ... [2021-11-25 19:18:52,291 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bd5f35d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:18:52, skipping insertion in model container [2021-11-25 19:18:52,292 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:18:52" (1/1) ... [2021-11-25 19:18:52,299 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:18:52,319 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:18:52,497 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_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c[2598,2611] [2021-11-25 19:18:52,506 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:18:52,514 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:18:52,540 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_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c[2598,2611] [2021-11-25 19:18:52,544 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:18:52,559 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:18:52,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:18:52 WrapperNode [2021-11-25 19:18:52,559 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:18:52,561 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:18:52,561 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:18:52,561 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:18:52,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:18:52" (1/1) ... [2021-11-25 19:18:52,578 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:18:52" (1/1) ... [2021-11-25 19:18:52,632 INFO L137 Inliner]: procedures = 25, calls = 46, calls flagged for inlining = 11, calls inlined = 17, statements flattened = 193 [2021-11-25 19:18:52,632 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:18:52,633 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:18:52,633 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:18:52,638 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:18:52,647 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:18:52" (1/1) ... [2021-11-25 19:18:52,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:18:52" (1/1) ... [2021-11-25 19:18:52,653 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:18:52" (1/1) ... [2021-11-25 19:18:52,653 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:18:52" (1/1) ... [2021-11-25 19:18:52,664 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:18:52" (1/1) ... [2021-11-25 19:18:52,699 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:18:52" (1/1) ... [2021-11-25 19:18:52,701 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:18:52" (1/1) ... [2021-11-25 19:18:52,705 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:18:52,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:18:52,706 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:18:52,706 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:18:52,709 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:18:52" (1/1) ... [2021-11-25 19:18:52,716 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:18:52,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:18:52,743 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:18:52,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:18:52,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:18:52,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 19:18:52,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 19:18:52,789 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 19:18:52,789 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-25 19:18:52,790 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-25 19:18:52,790 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-25 19:18:52,790 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-25 19:18:52,790 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-25 19:18:52,790 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-25 19:18:52,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:18:52,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 19:18:52,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:18:52,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:18:52,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:18:52,793 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-25 19:18:52,879 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:18:52,881 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:18:53,352 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:18:53,372 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:18:53,372 INFO L301 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-25 19:18:53,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:18:53 BoogieIcfgContainer [2021-11-25 19:18:53,375 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:18:53,376 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:18:53,376 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:18:53,379 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:18:53,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:18:52" (1/3) ... [2021-11-25 19:18:53,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fbe70b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:18:53, skipping insertion in model container [2021-11-25 19:18:53,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:18:52" (2/3) ... [2021-11-25 19:18:53,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fbe70b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:18:53, skipping insertion in model container [2021-11-25 19:18:53,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:18:53" (3/3) ... [2021-11-25 19:18:53,383 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-vector-add.wvr.c [2021-11-25 19:18:53,388 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-25 19:18:53,388 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:18:53,388 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:18:53,388 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-25 19:18:53,431 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,431 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,432 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,432 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,432 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,432 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,432 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,433 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,433 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,433 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,433 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,433 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,434 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,434 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,434 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,434 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,434 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,434 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,435 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,435 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,435 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,435 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,435 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,435 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,436 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,436 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,436 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,436 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,436 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,437 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,437 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,437 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,437 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,437 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,437 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,438 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,438 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,438 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,438 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,438 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,439 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,439 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,439 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,439 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,439 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,440 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,440 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,440 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,440 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,440 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,440 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,441 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,441 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,441 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,441 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,441 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,442 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,442 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,442 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,442 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,442 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,442 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,443 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,443 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,443 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,443 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,443 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,443 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,444 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,444 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,444 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,444 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,444 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,444 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,445 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,445 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,445 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,445 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,446 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,446 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,446 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,446 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,446 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,446 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,447 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,447 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,447 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,447 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,447 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,447 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,448 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,448 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,448 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,448 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,448 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,449 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,449 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,449 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,449 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,449 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,449 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,450 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,450 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,450 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,450 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,450 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,450 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,450 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,451 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,451 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,451 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,451 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,451 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,451 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,454 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,455 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,455 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,455 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,455 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,455 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,458 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,459 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,459 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,459 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,459 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,459 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,461 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,461 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,462 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,462 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,462 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,462 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:18:53,465 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-11-25 19:18:53,509 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:18:53,516 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 19:18:53,517 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-25 19:18:53,538 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-25 19:18:53,551 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 279 places, 294 transitions, 612 flow [2021-11-25 19:18:53,554 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 279 places, 294 transitions, 612 flow [2021-11-25 19:18:53,555 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 279 places, 294 transitions, 612 flow [2021-11-25 19:18:53,719 INFO L129 PetriNetUnfolder]: 25/291 cut-off events. [2021-11-25 19:18:53,725 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-11-25 19:18:53,731 INFO L84 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 291 events. 25/291 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 179 event pairs, 0 based on Foata normal form. 0/265 useless extension candidates. Maximal degree in co-relation 234. Up to 2 conditions per place. [2021-11-25 19:18:53,736 INFO L116 LiptonReduction]: Number of co-enabled transitions 2184 [2021-11-25 19:19:02,830 INFO L131 LiptonReduction]: Checked pairs total: 4296 [2021-11-25 19:19:02,831 INFO L133 LiptonReduction]: Total number of compositions: 313 [2021-11-25 19:19:02,838 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 43 places, 40 transitions, 104 flow [2021-11-25 19:19:02,901 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 378 states, 377 states have (on average 3.2546419098143238) internal successors, (1227), 377 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:19:02,905 INFO L276 IsEmpty]: Start isEmpty. Operand has 378 states, 377 states have (on average 3.2546419098143238) internal successors, (1227), 377 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:19:02,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-25 19:19:02,927 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:19:02,927 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] [2021-11-25 19:19:02,928 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 19:19:02,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:19:02,932 INFO L85 PathProgramCache]: Analyzing trace with hash 724272896, now seen corresponding path program 1 times [2021-11-25 19:19:02,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:19:02,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813190747] [2021-11-25 19:19:02,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:19:02,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:19:03,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:19:03,320 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 19:19:03,321 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:19:03,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813190747] [2021-11-25 19:19:03,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813190747] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:19:03,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:19:03,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:19:03,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879518603] [2021-11-25 19:19:03,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:19:03,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:19:03,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:19:03,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:19:03,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:19:03,361 INFO L87 Difference]: Start difference. First operand has 378 states, 377 states have (on average 3.2546419098143238) internal successors, (1227), 377 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:19:03,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:19:03,556 INFO L93 Difference]: Finished difference Result 757 states and 2455 transitions. [2021-11-25 19:19:03,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:19:03,558 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-25 19:19:03,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:19:03,575 INFO L225 Difference]: With dead ends: 757 [2021-11-25 19:19:03,575 INFO L226 Difference]: Without dead ends: 382 [2021-11-25 19:19:03,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:19:03,579 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 37 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:19:03,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 18 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:19:03,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2021-11-25 19:19:03,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2021-11-25 19:19:03,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.2309711286089238) internal successors, (1231), 381 states have internal predecessors, (1231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:19:03,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1231 transitions. [2021-11-25 19:19:03,672 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1231 transitions. Word has length 23 [2021-11-25 19:19:03,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:19:03,674 INFO L470 AbstractCegarLoop]: Abstraction has 382 states and 1231 transitions. [2021-11-25 19:19:03,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:19:03,674 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1231 transitions. [2021-11-25 19:19:03,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-25 19:19:03,679 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:19:03,679 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] [2021-11-25 19:19:03,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:19:03,680 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 19:19:03,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:19:03,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1342222061, now seen corresponding path program 1 times [2021-11-25 19:19:03,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:19:03,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102463654] [2021-11-25 19:19:03,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:19:03,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:19:03,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:19:03,935 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 19:19:03,935 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:19:03,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102463654] [2021-11-25 19:19:03,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102463654] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:19:03,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418942496] [2021-11-25 19:19:03,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:19:03,937 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:19:03,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:19:03,940 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:19:03,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 19:19:04,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:19:04,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 19:19:04,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:19:04,219 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 19:19:04,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:19:04,318 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 19:19:04,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418942496] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-25 19:19:04,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:19:04,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2021-11-25 19:19:04,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111485053] [2021-11-25 19:19:04,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:19:04,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:19:04,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:19:04,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:19:04,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-25 19:19:04,322 INFO L87 Difference]: Start difference. First operand 382 states and 1231 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:19:04,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:19:04,534 INFO L93 Difference]: Finished difference Result 444 states and 1440 transitions. [2021-11-25 19:19:04,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:19:04,535 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-25 19:19:04,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:19:04,542 INFO L225 Difference]: With dead ends: 444 [2021-11-25 19:19:04,542 INFO L226 Difference]: Without dead ends: 444 [2021-11-25 19:19:04,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-11-25 19:19:04,544 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 44 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:19:04,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 13 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:19:04,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-11-25 19:19:04,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 444. [2021-11-25 19:19:04,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 443 states have (on average 3.250564334085779) internal successors, (1440), 443 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:19:04,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 1440 transitions. [2021-11-25 19:19:04,586 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 1440 transitions. Word has length 27 [2021-11-25 19:19:04,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:19:04,587 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 1440 transitions. [2021-11-25 19:19:04,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:19:04,588 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 1440 transitions. [2021-11-25 19:19:04,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-25 19:19:04,591 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:19:04,591 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] [2021-11-25 19:19:04,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 19:19:04,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-11-25 19:19:04,792 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 19:19:04,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:19:04,793 INFO L85 PathProgramCache]: Analyzing trace with hash 732063223, now seen corresponding path program 1 times [2021-11-25 19:19:04,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:19:04,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496761901] [2021-11-25 19:19:04,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:19:04,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:19:04,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:19:04,987 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 19:19:04,987 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:19:04,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496761901] [2021-11-25 19:19:04,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496761901] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:19:04,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991657224] [2021-11-25 19:19:04,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:19:04,988 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:19:04,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:19:04,989 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:19:05,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 19:19:05,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:19:05,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 19:19:05,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:19:05,260 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 19:19:05,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:19:05,387 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 19:19:05,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991657224] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-25 19:19:05,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:19:05,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2021-11-25 19:19:05,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537211351] [2021-11-25 19:19:05,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:19:05,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 19:19:05,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:19:05,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 19:19:05,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-11-25 19:19:05,390 INFO L87 Difference]: Start difference. First operand 444 states and 1440 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:19:05,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:19:05,729 INFO L93 Difference]: Finished difference Result 966 states and 3154 transitions. [2021-11-25 19:19:05,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 19:19:05,731 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-25 19:19:05,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:19:05,745 INFO L225 Difference]: With dead ends: 966 [2021-11-25 19:19:05,746 INFO L226 Difference]: Without dead ends: 966 [2021-11-25 19:19:05,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2021-11-25 19:19:05,748 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 149 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:19:05,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 25 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:19:05,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2021-11-25 19:19:05,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 498. [2021-11-25 19:19:05,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 497 states have (on average 3.3400402414486923) internal successors, (1660), 497 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:19:05,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 1660 transitions. [2021-11-25 19:19:05,785 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 1660 transitions. Word has length 30 [2021-11-25 19:19:05,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:19:05,786 INFO L470 AbstractCegarLoop]: Abstraction has 498 states and 1660 transitions. [2021-11-25 19:19:05,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:19:05,786 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 1660 transitions. [2021-11-25 19:19:05,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-25 19:19:05,789 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:19:05,789 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] [2021-11-25 19:19:05,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 19:19:06,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:19:06,006 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 19:19:06,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:19:06,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1020524845, now seen corresponding path program 2 times [2021-11-25 19:19:06,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:19:06,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390096159] [2021-11-25 19:19:06,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:19:06,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:19:06,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:19:06,138 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 19:19:06,138 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:19:06,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390096159] [2021-11-25 19:19:06,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390096159] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:19:06,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812757768] [2021-11-25 19:19:06,140 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:19:06,140 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:19:06,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:19:06,142 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:19:06,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 19:19:06,502 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-25 19:19:06,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:19:06,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 19:19:06,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:19:06,624 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 19:19:06,624 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:19:06,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812757768] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:19:06,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:19:06,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 12 [2021-11-25 19:19:06,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086369231] [2021-11-25 19:19:06,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:19:06,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:19:06,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:19:06,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:19:06,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-25 19:19:06,633 INFO L87 Difference]: Start difference. First operand 498 states and 1660 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:19:06,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:19:06,868 INFO L93 Difference]: Finished difference Result 1083 states and 3491 transitions. [2021-11-25 19:19:06,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:19:06,869 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-25 19:19:06,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:19:06,879 INFO L225 Difference]: With dead ends: 1083 [2021-11-25 19:19:06,879 INFO L226 Difference]: Without dead ends: 1066 [2021-11-25 19:19:06,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-25 19:19:06,886 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 64 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:19:06,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 39 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:19:06,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-25 19:19:06,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 514. [2021-11-25 19:19:06,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 513 states have (on average 3.309941520467836) internal successors, (1698), 513 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:19:06,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 1698 transitions. [2021-11-25 19:19:06,927 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 1698 transitions. Word has length 30 [2021-11-25 19:19:06,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:19:06,927 INFO L470 AbstractCegarLoop]: Abstraction has 514 states and 1698 transitions. [2021-11-25 19:19:06,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:19:06,928 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 1698 transitions. [2021-11-25 19:19:06,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-25 19:19:06,931 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:19:06,931 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] [2021-11-25 19:19:06,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 19:19:07,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:19:07,158 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 19:19:07,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:19:07,158 INFO L85 PathProgramCache]: Analyzing trace with hash -464564481, now seen corresponding path program 3 times [2021-11-25 19:19:07,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:19:07,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95741758] [2021-11-25 19:19:07,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:19:07,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:19:07,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:19:07,266 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 19:19:07,267 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:19:07,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95741758] [2021-11-25 19:19:07,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95741758] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:19:07,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065702864] [2021-11-25 19:19:07,267 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 19:19:07,267 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:19:07,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:19:07,268 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:19:07,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 19:19:07,375 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 19:19:07,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:19:07,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 19:19:07,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:19:07,485 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 19:19:07,485 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:19:07,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065702864] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:19:07,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:19:07,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-11-25 19:19:07,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428236461] [2021-11-25 19:19:07,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:19:07,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 19:19:07,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:19:07,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 19:19:07,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-25 19:19:07,489 INFO L87 Difference]: Start difference. First operand 514 states and 1698 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:19:07,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:19:07,764 INFO L93 Difference]: Finished difference Result 826 states and 2686 transitions. [2021-11-25 19:19:07,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:19:07,765 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-25 19:19:07,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:19:07,773 INFO L225 Difference]: With dead ends: 826 [2021-11-25 19:19:07,773 INFO L226 Difference]: Without dead ends: 826 [2021-11-25 19:19:07,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-11-25 19:19:07,774 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 101 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:19:07,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 39 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:19:07,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2021-11-25 19:19:07,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 552. [2021-11-25 19:19:07,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 551 states have (on average 3.2994555353901998) internal successors, (1818), 551 states have internal predecessors, (1818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:19:07,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 1818 transitions. [2021-11-25 19:19:07,802 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 1818 transitions. Word has length 30 [2021-11-25 19:19:07,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:19:07,803 INFO L470 AbstractCegarLoop]: Abstraction has 552 states and 1818 transitions. [2021-11-25 19:19:07,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:19:07,803 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 1818 transitions. [2021-11-25 19:19:07,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-25 19:19:07,806 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:19:07,806 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] [2021-11-25 19:19:07,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 19:19:08,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:19:08,031 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 19:19:08,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:19:08,031 INFO L85 PathProgramCache]: Analyzing trace with hash -229980547, now seen corresponding path program 4 times [2021-11-25 19:19:08,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:19:08,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206550326] [2021-11-25 19:19:08,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:19:08,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:19:08,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:19:08,163 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 19:19:08,163 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:19:08,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206550326] [2021-11-25 19:19:08,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206550326] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:19:08,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535720852] [2021-11-25 19:19:08,164 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 19:19:08,164 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:19:08,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:19:08,166 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:19:08,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 19:19:08,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:19:08,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 19:19:08,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:19:08,411 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 19:19:08,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:19:08,549 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 19:19:08,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535720852] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-25 19:19:08,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:19:08,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2021-11-25 19:19:08,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325652944] [2021-11-25 19:19:08,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:19:08,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 19:19:08,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:19:08,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 19:19:08,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-11-25 19:19:08,552 INFO L87 Difference]: Start difference. First operand 552 states and 1818 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:19:08,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:19:08,812 INFO L93 Difference]: Finished difference Result 852 states and 2768 transitions. [2021-11-25 19:19:08,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 19:19:08,813 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-25 19:19:08,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:19:08,821 INFO L225 Difference]: With dead ends: 852 [2021-11-25 19:19:08,821 INFO L226 Difference]: Without dead ends: 852 [2021-11-25 19:19:08,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2021-11-25 19:19:08,822 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 127 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:19:08,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 29 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:19:08,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2021-11-25 19:19:08,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 580. [2021-11-25 19:19:08,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 579 states have (on average 3.378238341968912) internal successors, (1956), 579 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:19:08,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 1956 transitions. [2021-11-25 19:19:08,852 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 1956 transitions. Word has length 30 [2021-11-25 19:19:08,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:19:08,853 INFO L470 AbstractCegarLoop]: Abstraction has 580 states and 1956 transitions. [2021-11-25 19:19:08,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:19:08,853 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 1956 transitions. [2021-11-25 19:19:08,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-25 19:19:08,856 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:19:08,856 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] [2021-11-25 19:19:08,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 19:19:09,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:19:09,074 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 19:19:09,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:19:09,075 INFO L85 PathProgramCache]: Analyzing trace with hash 58481075, now seen corresponding path program 5 times [2021-11-25 19:19:09,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:19:09,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868948611] [2021-11-25 19:19:09,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:19:09,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:19:09,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:19:09,172 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 19:19:09,173 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:19:09,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868948611] [2021-11-25 19:19:09,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868948611] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:19:09,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35273869] [2021-11-25 19:19:09,173 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:19:09,173 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:19:09,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:19:09,174 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:19:09,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 19:19:09,487 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-25 19:19:09,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:19:09,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 19:19:09,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:19:09,586 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 19:19:09,586 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:19:09,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35273869] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:19:09,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:19:09,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 12 [2021-11-25 19:19:09,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522906742] [2021-11-25 19:19:09,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:19:09,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:19:09,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:19:09,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:19:09,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-25 19:19:09,588 INFO L87 Difference]: Start difference. First operand 580 states and 1956 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:19:09,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:19:09,804 INFO L93 Difference]: Finished difference Result 1107 states and 3639 transitions. [2021-11-25 19:19:09,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:19:09,805 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-25 19:19:09,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:19:09,815 INFO L225 Difference]: With dead ends: 1107 [2021-11-25 19:19:09,815 INFO L226 Difference]: Without dead ends: 1090 [2021-11-25 19:19:09,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-25 19:19:09,816 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 57 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:19:09,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 46 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:19:09,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2021-11-25 19:19:09,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 566. [2021-11-25 19:19:09,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 565 states have (on average 3.327433628318584) internal successors, (1880), 565 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:19:09,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 1880 transitions. [2021-11-25 19:19:09,847 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 1880 transitions. Word has length 30 [2021-11-25 19:19:09,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:19:09,848 INFO L470 AbstractCegarLoop]: Abstraction has 566 states and 1880 transitions. [2021-11-25 19:19:09,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:19:09,848 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 1880 transitions. [2021-11-25 19:19:09,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-25 19:19:09,850 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:19:09,851 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] [2021-11-25 19:19:09,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-25 19:19:10,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-25 19:19:10,066 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 19:19:10,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:19:10,067 INFO L85 PathProgramCache]: Analyzing trace with hash 607688865, now seen corresponding path program 6 times [2021-11-25 19:19:10,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:19:10,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297589342] [2021-11-25 19:19:10,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:19:10,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:19:10,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:19:10,175 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 19:19:10,175 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:19:10,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297589342] [2021-11-25 19:19:10,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297589342] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:19:10,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234962911] [2021-11-25 19:19:10,176 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 19:19:10,176 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:19:10,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:19:10,177 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:19:10,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-25 19:19:10,276 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 19:19:10,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:19:10,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 19:19:10,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:19:10,361 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 19:19:10,361 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:19:10,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234962911] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:19:10,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:19:10,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2021-11-25 19:19:10,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404779314] [2021-11-25 19:19:10,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:19:10,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 19:19:10,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:19:10,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 19:19:10,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-25 19:19:10,364 INFO L87 Difference]: Start difference. First operand 566 states and 1880 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:19:10,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:19:10,628 INFO L93 Difference]: Finished difference Result 838 states and 2756 transitions. [2021-11-25 19:19:10,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:19:10,628 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-25 19:19:10,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:19:10,636 INFO L225 Difference]: With dead ends: 838 [2021-11-25 19:19:10,636 INFO L226 Difference]: Without dead ends: 838 [2021-11-25 19:19:10,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-11-25 19:19:10,637 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 91 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:19:10,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 45 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:19:10,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2021-11-25 19:19:10,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 586. [2021-11-25 19:19:10,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 585 states have (on average 3.32991452991453) internal successors, (1948), 585 states have internal predecessors, (1948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:19:10,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 1948 transitions. [2021-11-25 19:19:10,669 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 1948 transitions. Word has length 30 [2021-11-25 19:19:10,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:19:10,669 INFO L470 AbstractCegarLoop]: Abstraction has 586 states and 1948 transitions. [2021-11-25 19:19:10,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:19:10,669 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 1948 transitions. [2021-11-25 19:19:10,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-25 19:19:10,673 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:19:10,673 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] [2021-11-25 19:19:10,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-25 19:19:10,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-25 19:19:10,886 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 19:19:10,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:19:10,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1091272577, now seen corresponding path program 7 times [2021-11-25 19:19:10,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:19:10,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113060050] [2021-11-25 19:19:10,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:19:10,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:19:10,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:19:10,975 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 19:19:10,975 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:19:10,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113060050] [2021-11-25 19:19:10,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113060050] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:19:10,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214968529] [2021-11-25 19:19:10,976 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 19:19:10,976 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:19:10,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:19:10,977 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:19:10,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-25 19:19:11,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:19:11,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 19:19:11,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:19:11,211 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 19:19:11,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:19:11,310 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 19:19:11,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214968529] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-25 19:19:11,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:19:11,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2021-11-25 19:19:11,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348930588] [2021-11-25 19:19:11,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:19:11,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 19:19:11,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:19:11,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 19:19:11,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-11-25 19:19:11,317 INFO L87 Difference]: Start difference. First operand 586 states and 1948 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:19:11,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:19:11,565 INFO L93 Difference]: Finished difference Result 928 states and 3030 transitions. [2021-11-25 19:19:11,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 19:19:11,566 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-25 19:19:11,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:19:11,574 INFO L225 Difference]: With dead ends: 928 [2021-11-25 19:19:11,574 INFO L226 Difference]: Without dead ends: 928 [2021-11-25 19:19:11,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2021-11-25 19:19:11,575 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 98 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:19:11,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 38 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:19:11,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2021-11-25 19:19:11,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 576. [2021-11-25 19:19:11,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 575 states have (on average 3.2869565217391306) internal successors, (1890), 575 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:19:11,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 1890 transitions. [2021-11-25 19:19:11,602 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 1890 transitions. Word has length 30 [2021-11-25 19:19:11,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:19:11,603 INFO L470 AbstractCegarLoop]: Abstraction has 576 states and 1890 transitions. [2021-11-25 19:19:11,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:19:11,603 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 1890 transitions. [2021-11-25 19:19:11,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-25 19:19:11,606 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:19:11,606 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] [2021-11-25 19:19:11,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-25 19:19:11,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:19:11,834 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 19:19:11,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:19:11,834 INFO L85 PathProgramCache]: Analyzing trace with hash 396805243, now seen corresponding path program 8 times [2021-11-25 19:19:11,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:19:11,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518172514] [2021-11-25 19:19:11,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:19:11,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:19:11,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:19:11,925 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 19:19:11,925 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:19:11,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518172514] [2021-11-25 19:19:11,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518172514] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:19:11,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210183993] [2021-11-25 19:19:11,926 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:19:11,926 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:19:11,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:19:11,927 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:19:11,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-25 19:19:12,546 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-25 19:19:12,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:19:12,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 19:19:12,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:19:12,662 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 19:19:12,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:19:12,773 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 19:19:12,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210183993] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:19:12,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2029508729] [2021-11-25 19:19:12,783 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1603) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-25 19:19:12,790 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:19:12,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 15 [2021-11-25 19:19:12,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78501872] [2021-11-25 19:19:12,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:19:12,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-25 19:19:12,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:19:12,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-25 19:19:12,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-11-25 19:19:12,794 INFO L87 Difference]: Start difference. First operand 576 states and 1890 transitions. Second operand has 15 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:19:13,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:19:13,247 INFO L93 Difference]: Finished difference Result 904 states and 2932 transitions. [2021-11-25 19:19:13,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 19:19:13,250 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-25 19:19:13,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:19:13,257 INFO L225 Difference]: With dead ends: 904 [2021-11-25 19:19:13,257 INFO L226 Difference]: Without dead ends: 904 [2021-11-25 19:19:13,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=350, Unknown=0, NotChecked=0, Total=462 [2021-11-25 19:19:13,259 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 203 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:19:13,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 71 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:19:13,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2021-11-25 19:19:13,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 570. [2021-11-25 19:19:13,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 569 states have (on average 3.2618629173989455) internal successors, (1856), 569 states have internal predecessors, (1856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:19:13,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 1856 transitions. [2021-11-25 19:19:13,289 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 1856 transitions. Word has length 30 [2021-11-25 19:19:13,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:19:13,290 INFO L470 AbstractCegarLoop]: Abstraction has 570 states and 1856 transitions. [2021-11-25 19:19:13,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:19:13,290 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 1856 transitions. [2021-11-25 19:19:13,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-25 19:19:13,293 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:19:13,293 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] [2021-11-25 19:19:13,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-25 19:19:13,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-25 19:19:13,509 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 19:19:13,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:19:13,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1171051657, now seen corresponding path program 1 times [2021-11-25 19:19:13,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:19:13,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714417287] [2021-11-25 19:19:13,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:19:13,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:19:13,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:19:14,694 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 19:19:14,695 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:19:14,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714417287] [2021-11-25 19:19:14,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714417287] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:19:14,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599673687] [2021-11-25 19:19:14,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:19:14,695 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:19:14,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:19:14,698 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:19:14,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f11fa6-b9df-46a2-b4e2-07f1cababcb4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-25 19:19:14,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:19:14,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 65 conjunts are in the unsatisfiable core [2021-11-25 19:19:14,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:19:14,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:19:14,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2021-11-25 19:19:15,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:19:15,211 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:19:15,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-25 19:19:15,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-11-25 19:19:15,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:19:15,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-11-25 19:19:16,197 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:19:16,256 INFO L354 Elim1Store]: treesize reduction 108, result has 26.5 percent of original size [2021-11-25 19:19:16,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 40 treesize of output 54 [2021-11-25 19:19:18,418 INFO L354 Elim1Store]: treesize reduction 56, result has 35.6 percent of original size [2021-11-25 19:19:18,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 58 treesize of output 71 [2021-11-25 19:19:18,879 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 19:19:18,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:21:05,597 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:21:05,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 549590 treesize of output 510438 [2021-11-25 19:21:09,992 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:21:09,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 1221542 treesize of output 1101350 [2021-11-25 19:22:01,659 WARN L227 SmtUtils]: Spent 51.66s on a formula simplification. DAG size of input: 2370 DAG size of output: 2332 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 19:22:03,024 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:22:03,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 2737326 treesize of output 2356270 [2021-11-25 19:24:52,312 WARN L227 SmtUtils]: Spent 2.82m on a formula simplification. DAG size of input: 2955 DAG size of output: 2893 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 19:25:24,179 WARN L227 SmtUtils]: Spent 24.10s on a formula simplification. DAG size of input: 2716 DAG size of output: 2716 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 19:25:54,031 WARN L227 SmtUtils]: Spent 13.50s on a formula simplification that was a NOOP. DAG size: 2715 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 19:26:19,361 WARN L227 SmtUtils]: Spent 6.55s on a formula simplification that was a NOOP. DAG size: 2707 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 19:26:32,496 WARN L227 SmtUtils]: Spent 13.11s on a formula simplification that was a NOOP. DAG size: 2710 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 19:27:27,120 WARN L227 SmtUtils]: Spent 29.20s on a formula simplification. DAG size of input: 2705 DAG size of output: 2705 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 19:28:24,663 WARN L227 SmtUtils]: Spent 36.04s on a formula simplification. DAG size of input: 1886 DAG size of output: 1886 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 19:29:16,734 WARN L227 SmtUtils]: Spent 38.38s on a formula simplification. DAG size of input: 1886 DAG size of output: 1886 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 19:29:53,859 WARN L227 SmtUtils]: Spent 23.56s on a formula simplification. DAG size of input: 1886 DAG size of output: 1886 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 19:30:36,127 WARN L227 SmtUtils]: Spent 6.25s on a formula simplification. DAG size of input: 1003 DAG size of output: 1001 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 19:31:07,400 WARN L227 SmtUtils]: Spent 13.94s on a formula simplification. DAG size of input: 1880 DAG size of output: 1880 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 19:31:43,773 WARN L227 SmtUtils]: Spent 25.24s on a formula simplification. DAG size of input: 1878 DAG size of output: 1878 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 19:32:17,326 WARN L227 SmtUtils]: Spent 27.06s on a formula simplification. DAG size of input: 1876 DAG size of output: 1876 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 19:32:45,307 WARN L227 SmtUtils]: Spent 6.08s on a formula simplification. DAG size of input: 1003 DAG size of output: 1001 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)