./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 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1345dec-b917-4f3b-9fed-cb5b276ac380/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1345dec-b917-4f3b-9fed-cb5b276ac380/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1345dec-b917-4f3b-9fed-cb5b276ac380/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1345dec-b917-4f3b-9fed-cb5b276ac380/bin/utaipan-I9t0OCRTmS/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_b1345dec-b917-4f3b-9fed-cb5b276ac380/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1345dec-b917-4f3b-9fed-cb5b276ac380/bin/utaipan-I9t0OCRTmS --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 --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 07:53:53,925 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:53:53,927 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:53:53,950 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:53:53,951 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:53:53,955 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:53:53,958 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:53:53,965 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:53:53,966 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:53:53,972 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:53:53,973 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:53:53,977 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:53:53,977 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:53:53,978 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:53:53,979 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:53:53,980 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:53:53,981 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:53:53,982 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:53:53,983 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:53:53,985 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:53:53,986 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:53:53,991 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:53:53,994 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:53:53,995 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:53:54,008 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:53:54,008 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:53:54,009 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:53:54,010 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:53:54,010 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:53:54,011 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:53:54,011 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:53:54,012 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:53:54,013 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:53:54,013 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:53:54,014 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:53:54,015 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:53:54,015 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:53:54,016 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:53:54,016 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:53:54,017 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:53:54,017 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:53:54,022 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1345dec-b917-4f3b-9fed-cb5b276ac380/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:53:54,066 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:53:54,066 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:53:54,067 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:53:54,067 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:53:54,068 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:53:54,068 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:53:54,068 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:53:54,069 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:53:54,069 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:53:54,069 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:53:54,070 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:53:54,070 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:53:54,070 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:53:54,071 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:53:54,071 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:53:54,071 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:53:54,071 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:53:54,071 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:53:54,072 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:53:54,072 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:53:54,072 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:53:54,073 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:53:54,073 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:53:54,074 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:53:54,074 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:53:54,075 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:53:54,075 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:53:54,075 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:53:54,075 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:53:54,075 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:53:54,076 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:53:54,076 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:53:54,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:53:54,076 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:53:54,077 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:53:54,077 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:53:54,077 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:53:54,077 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:53:54,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:53:54,077 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:53:54,078 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:53:54,078 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1345dec-b917-4f3b-9fed-cb5b276ac380/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1345dec-b917-4f3b-9fed-cb5b276ac380/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f91e7b856fd6bf43c568f48d1703ed519fbb708e5c1360b96f8534e6fa4ed35d [2022-11-19 07:53:54,318 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:53:54,338 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:53:54,340 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:53:54,341 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:53:54,342 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:53:54,343 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1345dec-b917-4f3b-9fed-cb5b276ac380/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2022-11-19 07:53:54,431 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1345dec-b917-4f3b-9fed-cb5b276ac380/bin/utaipan-I9t0OCRTmS/data/0a9ff7b09/5de15495cf52457db8cc3c56f8dd9f9c/FLAGebd20a23d [2022-11-19 07:53:54,990 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:53:54,990 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1345dec-b917-4f3b-9fed-cb5b276ac380/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2022-11-19 07:53:54,999 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1345dec-b917-4f3b-9fed-cb5b276ac380/bin/utaipan-I9t0OCRTmS/data/0a9ff7b09/5de15495cf52457db8cc3c56f8dd9f9c/FLAGebd20a23d [2022-11-19 07:53:55,344 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1345dec-b917-4f3b-9fed-cb5b276ac380/bin/utaipan-I9t0OCRTmS/data/0a9ff7b09/5de15495cf52457db8cc3c56f8dd9f9c [2022-11-19 07:53:55,347 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:53:55,350 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:53:55,356 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:53:55,356 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:53:55,360 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:53:55,361 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:53:55" (1/1) ... [2022-11-19 07:53:55,362 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b9d8b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:55, skipping insertion in model container [2022-11-19 07:53:55,363 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:53:55" (1/1) ... [2022-11-19 07:53:55,373 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:53:55,398 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:53:55,641 WARN L234 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_b1345dec-b917-4f3b-9fed-cb5b276ac380/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c[2598,2611] [2022-11-19 07:53:55,650 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:53:55,657 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:53:55,681 WARN L234 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_b1345dec-b917-4f3b-9fed-cb5b276ac380/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c[2598,2611] [2022-11-19 07:53:55,684 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:53:55,698 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:53:55,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:55 WrapperNode [2022-11-19 07:53:55,700 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:53:55,701 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:53:55,701 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:53:55,701 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:53:55,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:55" (1/1) ... [2022-11-19 07:53:55,729 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:55" (1/1) ... [2022-11-19 07:53:55,773 INFO L138 Inliner]: procedures = 25, calls = 46, calls flagged for inlining = 11, calls inlined = 17, statements flattened = 193 [2022-11-19 07:53:55,775 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:53:55,776 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:53:55,776 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:53:55,777 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:53:55,786 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:55" (1/1) ... [2022-11-19 07:53:55,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:55" (1/1) ... [2022-11-19 07:53:55,799 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:55" (1/1) ... [2022-11-19 07:53:55,799 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:55" (1/1) ... [2022-11-19 07:53:55,806 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:55" (1/1) ... [2022-11-19 07:53:55,826 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:55" (1/1) ... [2022-11-19 07:53:55,828 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:55" (1/1) ... [2022-11-19 07:53:55,829 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:55" (1/1) ... [2022-11-19 07:53:55,831 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:53:55,832 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:53:55,832 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:53:55,833 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:53:55,845 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:55" (1/1) ... [2022-11-19 07:53:55,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:53:55,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1345dec-b917-4f3b-9fed-cb5b276ac380/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:53:55,880 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1345dec-b917-4f3b-9fed-cb5b276ac380/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:53:55,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1345dec-b917-4f3b-9fed-cb5b276ac380/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:53:55,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:53:55,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:53:55,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:53:55,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:53:55,945 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-19 07:53:55,945 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-19 07:53:55,945 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-19 07:53:55,945 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-19 07:53:55,945 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-19 07:53:55,945 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-19 07:53:55,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:53:55,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:53:55,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:53:55,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:53:55,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:53:55,948 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-19 07:53:56,096 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:53:56,098 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:53:56,560 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:53:56,571 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:53:56,572 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-19 07:53:56,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:53:56 BoogieIcfgContainer [2022-11-19 07:53:56,574 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:53:56,577 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:53:56,577 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:53:56,581 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:53:56,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:53:55" (1/3) ... [2022-11-19 07:53:56,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bc91d9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:53:56, skipping insertion in model container [2022-11-19 07:53:56,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:55" (2/3) ... [2022-11-19 07:53:56,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bc91d9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:53:56, skipping insertion in model container [2022-11-19 07:53:56,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:53:56" (3/3) ... [2022-11-19 07:53:56,584 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-vector-add.wvr.c [2022-11-19 07:53:56,593 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-19 07:53:56,604 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:53:56,604 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:53:56,604 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-19 07:53:56,689 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-19 07:53:56,740 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 07:53:56,754 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 279 places, 294 transitions, 612 flow [2022-11-19 07:53:56,757 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 279 places, 294 transitions, 612 flow [2022-11-19 07:53:56,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 279 places, 294 transitions, 612 flow [2022-11-19 07:53:56,904 INFO L130 PetriNetUnfolder]: 25/291 cut-off events. [2022-11-19 07:53:56,904 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-19 07:53:56,909 INFO L83 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 174 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. [2022-11-19 07:53:56,912 INFO L119 LiptonReduction]: Number of co-enabled transitions 2184 [2022-11-19 07:54:08,597 INFO L134 LiptonReduction]: Checked pairs total: 4815 [2022-11-19 07:54:08,601 INFO L136 LiptonReduction]: Total number of compositions: 318 [2022-11-19 07:54:08,617 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 43 places, 40 transitions, 104 flow [2022-11-19 07:54:08,687 INFO L135 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) [2022-11-19 07:54:08,707 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:54:08,714 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1b8baa8f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:54:08,714 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-19 07:54:08,718 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) [2022-11-19 07:54:08,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-19 07:54:08,732 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:54:08,733 INFO L195 NwaCegarLoop]: 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] [2022-11-19 07:54:08,734 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-19 07:54:08,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:54:08,739 INFO L85 PathProgramCache]: Analyzing trace with hash -2014363420, now seen corresponding path program 1 times [2022-11-19 07:54:08,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:54:08,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652510009] [2022-11-19 07:54:08,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:54:08,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:54:08,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:54:09,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:54:09,457 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:54:09,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652510009] [2022-11-19 07:54:09,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652510009] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:54:09,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:54:09,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:54:09,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830433094] [2022-11-19 07:54:09,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:54:09,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:54:09,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:54:09,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:54:09,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:54:09,503 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) [2022-11-19 07:54:09,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:54:09,733 INFO L93 Difference]: Finished difference Result 757 states and 2455 transitions. [2022-11-19 07:54:09,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:54:09,737 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 [2022-11-19 07:54:09,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:54:09,758 INFO L225 Difference]: With dead ends: 757 [2022-11-19 07:54:09,758 INFO L226 Difference]: Without dead ends: 382 [2022-11-19 07:54:09,760 INFO L412 NwaCegarLoop]: 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 [2022-11-19 07:54:09,777 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 37 mSDsluCounter, 12 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:54:09,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 18 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:54:09,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-11-19 07:54:09,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2022-11-19 07:54:09,890 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) [2022-11-19 07:54:09,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1231 transitions. [2022-11-19 07:54:09,897 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1231 transitions. Word has length 23 [2022-11-19 07:54:09,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:54:09,898 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 1231 transitions. [2022-11-19 07:54:09,903 INFO L496 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) [2022-11-19 07:54:09,904 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1231 transitions. [2022-11-19 07:54:09,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-19 07:54:09,914 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:54:09,914 INFO L195 NwaCegarLoop]: 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] [2022-11-19 07:54:09,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:54:09,915 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-19 07:54:09,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:54:09,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1444040619, now seen corresponding path program 1 times [2022-11-19 07:54:09,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:54:09,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495287333] [2022-11-19 07:54:09,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:54:09,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:54:09,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:54:10,115 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-19 07:54:10,115 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:54:10,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495287333] [2022-11-19 07:54:10,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495287333] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:54:10,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176239532] [2022-11-19 07:54:10,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:54:10,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:54:10,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1345dec-b917-4f3b-9fed-cb5b276ac380/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:54:10,120 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1345dec-b917-4f3b-9fed-cb5b276ac380/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:54:10,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1345dec-b917-4f3b-9fed-cb5b276ac380/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:54:10,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:54:10,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:54:10,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:54:10,411 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-19 07:54:10,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:54:10,465 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-19 07:54:10,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176239532] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-19 07:54:10,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:54:10,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2022-11-19 07:54:10,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213847629] [2022-11-19 07:54:10,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:54:10,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:54:10,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:54:10,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:54:10,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:54:10,469 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) [2022-11-19 07:54:10,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:54:10,585 INFO L93 Difference]: Finished difference Result 444 states and 1440 transitions. [2022-11-19 07:54:10,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:54:10,585 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 [2022-11-19 07:54:10,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:54:10,590 INFO L225 Difference]: With dead ends: 444 [2022-11-19 07:54:10,590 INFO L226 Difference]: Without dead ends: 444 [2022-11-19 07:54:10,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-19 07:54:10,592 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 52 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:54:10,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 13 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:54:10,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2022-11-19 07:54:10,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 444. [2022-11-19 07:54:10,627 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) [2022-11-19 07:54:10,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 1440 transitions. [2022-11-19 07:54:10,631 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 1440 transitions. Word has length 27 [2022-11-19 07:54:10,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:54:10,633 INFO L495 AbstractCegarLoop]: Abstraction has 444 states and 1440 transitions. [2022-11-19 07:54:10,635 INFO L496 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) [2022-11-19 07:54:10,635 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 1440 transitions. [2022-11-19 07:54:10,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-19 07:54:10,642 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:54:10,642 INFO L195 NwaCegarLoop]: 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] [2022-11-19 07:54:10,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1345dec-b917-4f3b-9fed-cb5b276ac380/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:54:10,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1345dec-b917-4f3b-9fed-cb5b276ac380/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:54:10,849 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-19 07:54:10,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:54:10,850 INFO L85 PathProgramCache]: Analyzing trace with hash 905308493, now seen corresponding path program 1 times [2022-11-19 07:54:10,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:54:10,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053022155] [2022-11-19 07:54:10,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:54:10,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:54:10,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:54:11,157 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 07:54:11,157 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:54:11,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053022155] [2022-11-19 07:54:11,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053022155] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:54:11,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69950360] [2022-11-19 07:54:11,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:54:11,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:54:11,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1345dec-b917-4f3b-9fed-cb5b276ac380/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:54:11,160 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1345dec-b917-4f3b-9fed-cb5b276ac380/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:54:11,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1345dec-b917-4f3b-9fed-cb5b276ac380/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:54:11,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:54:11,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 07:54:11,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:54:11,419 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 07:54:11,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:54:11,499 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 07:54:11,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69950360] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-19 07:54:11,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:54:11,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2022-11-19 07:54:11,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118680771] [2022-11-19 07:54:11,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:54:11,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:54:11,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:54:11,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:54:11,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-11-19 07:54:11,502 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) [2022-11-19 07:54:11,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:54:11,818 INFO L93 Difference]: Finished difference Result 800 states and 2604 transitions. [2022-11-19 07:54:11,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 07:54:11,818 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 [2022-11-19 07:54:11,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:54:11,825 INFO L225 Difference]: With dead ends: 800 [2022-11-19 07:54:11,825 INFO L226 Difference]: Without dead ends: 800 [2022-11-19 07:54:11,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2022-11-19 07:54:11,831 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 131 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:54:11,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 36 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:54:11,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2022-11-19 07:54:11,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 514. [2022-11-19 07:54:11,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 513 states have (on average 3.216374269005848) internal successors, (1650), 513 states have internal predecessors, (1650), 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) [2022-11-19 07:54:11,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 1650 transitions. [2022-11-19 07:54:11,873 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 1650 transitions. Word has length 30 [2022-11-19 07:54:11,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:54:11,874 INFO L495 AbstractCegarLoop]: Abstraction has 514 states and 1650 transitions. [2022-11-19 07:54:11,874 INFO L496 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) [2022-11-19 07:54:11,874 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 1650 transitions. [2022-11-19 07:54:11,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-19 07:54:11,877 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:54:11,877 INFO L195 NwaCegarLoop]: 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] [2022-11-19 07:54:11,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1345dec-b917-4f3b-9fed-cb5b276ac380/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:54:12,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1345dec-b917-4f3b-9fed-cb5b276ac380/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:54:12,084 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-19 07:54:12,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:54:12,084 INFO L85 PathProgramCache]: Analyzing trace with hash 439044739, now seen corresponding path program 2 times [2022-11-19 07:54:12,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:54:12,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184812086] [2022-11-19 07:54:12,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:54:12,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:54:12,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:54:12,370 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 07:54:12,370 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:54:12,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184812086] [2022-11-19 07:54:12,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184812086] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:54:12,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037796697] [2022-11-19 07:54:12,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:54:12,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:54:12,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1345dec-b917-4f3b-9fed-cb5b276ac380/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:54:12,375 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1345dec-b917-4f3b-9fed-cb5b276ac380/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:54:12,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1345dec-b917-4f3b-9fed-cb5b276ac380/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 07:54:12,519 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-19 07:54:12,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:54:12,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 07:54:12,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:54:12,601 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-19 07:54:12,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:54:12,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037796697] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:54:12,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:54:12,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 12 [2022-11-19 07:54:12,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268128224] [2022-11-19 07:54:12,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:54:12,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:54:12,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:54:12,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:54:12,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-11-19 07:54:12,604 INFO L87 Difference]: Start difference. First operand 514 states and 1650 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) [2022-11-19 07:54:12,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:54:12,854 INFO L93 Difference]: Finished difference Result 1051 states and 3413 transitions. [2022-11-19 07:54:12,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:54:12,855 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 [2022-11-19 07:54:12,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:54:12,862 INFO L225 Difference]: With dead ends: 1051 [2022-11-19 07:54:12,863 INFO L226 Difference]: Without dead ends: 1034 [2022-11-19 07:54:12,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-11-19 07:54:12,864 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 61 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:54:12,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 39 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:54:12,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2022-11-19 07:54:12,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 542. [2022-11-19 07:54:12,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 541 states have (on average 3.253234750462107) internal successors, (1760), 541 states have internal predecessors, (1760), 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) [2022-11-19 07:54:12,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 1760 transitions. [2022-11-19 07:54:12,897 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 1760 transitions. Word has length 30 [2022-11-19 07:54:12,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:54:12,897 INFO L495 AbstractCegarLoop]: Abstraction has 542 states and 1760 transitions. [2022-11-19 07:54:12,898 INFO L496 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) [2022-11-19 07:54:12,898 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 1760 transitions. [2022-11-19 07:54:12,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-19 07:54:12,900 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:54:12,901 INFO L195 NwaCegarLoop]: 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] [2022-11-19 07:54:12,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1345dec-b917-4f3b-9fed-cb5b276ac380/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:54:13,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1345dec-b917-4f3b-9fed-cb5b276ac380/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:54:13,113 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-19 07:54:13,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:54:13,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1183747237, now seen corresponding path program 3 times [2022-11-19 07:54:13,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:54:13,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100436876] [2022-11-19 07:54:13,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:54:13,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:54:13,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:54:13,390 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 07:54:13,390 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:54:13,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100436876] [2022-11-19 07:54:13,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100436876] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:54:13,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264521398] [2022-11-19 07:54:13,391 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 07:54:13,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:54:13,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1345dec-b917-4f3b-9fed-cb5b276ac380/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:54:13,392 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1345dec-b917-4f3b-9fed-cb5b276ac380/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:54:13,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1345dec-b917-4f3b-9fed-cb5b276ac380/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 07:54:13,506 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 07:54:13,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:54:13,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:54:13,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:54:13,606 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 07:54:13,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:54:13,687 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 07:54:13,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264521398] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:54:13,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1615683207] [2022-11-19 07:54:13,697 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:1621) 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:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) 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) [2022-11-19 07:54:13,704 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:54:13,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-11-19 07:54:13,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880053244] [2022-11-19 07:54:13,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:54:13,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-19 07:54:13,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:54:13,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-19 07:54:13,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-11-19 07:54:13,707 INFO L87 Difference]: Start difference. First operand 542 states and 1760 transitions. Second operand has 16 states, 16 states have (on average 3.875) internal successors, (62), 16 states have internal predecessors, (62), 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) [2022-11-19 07:54:14,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:54:14,763 INFO L93 Difference]: Finished difference Result 1912 states and 6278 transitions. [2022-11-19 07:54:14,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-19 07:54:14,764 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.875) internal successors, (62), 16 states have internal predecessors, (62), 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 [2022-11-19 07:54:14,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:54:14,777 INFO L225 Difference]: With dead ends: 1912 [2022-11-19 07:54:14,777 INFO L226 Difference]: Without dead ends: 1912 [2022-11-19 07:54:14,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=313, Invalid=743, Unknown=0, NotChecked=0, Total=1056 [2022-11-19 07:54:14,780 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 369 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:54:14,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 63 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 752 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-19 07:54:14,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1912 states. [2022-11-19 07:54:14,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1912 to 542. [2022-11-19 07:54:14,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 541 states have (on average 3.253234750462107) internal successors, (1760), 541 states have internal predecessors, (1760), 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) [2022-11-19 07:54:14,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 1760 transitions. [2022-11-19 07:54:14,818 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 1760 transitions. Word has length 30 [2022-11-19 07:54:14,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:54:14,818 INFO L495 AbstractCegarLoop]: Abstraction has 542 states and 1760 transitions. [2022-11-19 07:54:14,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.875) internal successors, (62), 16 states have internal predecessors, (62), 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) [2022-11-19 07:54:14,819 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 1760 transitions. [2022-11-19 07:54:14,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-19 07:54:14,822 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:54:14,822 INFO L195 NwaCegarLoop]: 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] [2022-11-19 07:54:14,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1345dec-b917-4f3b-9fed-cb5b276ac380/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 07:54:15,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1345dec-b917-4f3b-9fed-cb5b276ac380/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:54:15,028 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-19 07:54:15,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:54:15,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1532815887, now seen corresponding path program 4 times [2022-11-19 07:54:15,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:54:15,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762096514] [2022-11-19 07:54:15,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:54:15,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:54:15,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:54:15,277 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 07:54:15,277 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:54:15,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762096514] [2022-11-19 07:54:15,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762096514] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:54:15,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135961650] [2022-11-19 07:54:15,277 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-19 07:54:15,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:54:15,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1345dec-b917-4f3b-9fed-cb5b276ac380/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:54:15,279 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1345dec-b917-4f3b-9fed-cb5b276ac380/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:54:15,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1345dec-b917-4f3b-9fed-cb5b276ac380/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 07:54:15,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:54:15,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 07:54:15,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:54:15,516 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 07:54:15,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:54:15,596 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 07:54:15,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135961650] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-19 07:54:15,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:54:15,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2022-11-19 07:54:15,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95477228] [2022-11-19 07:54:15,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:54:15,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:54:15,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:54:15,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:54:15,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-11-19 07:54:15,602 INFO L87 Difference]: Start difference. First operand 542 states and 1760 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) [2022-11-19 07:54:15,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:54:15,838 INFO L93 Difference]: Finished difference Result 702 states and 2284 transitions. [2022-11-19 07:54:15,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 07:54:15,838 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 [2022-11-19 07:54:15,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:54:15,843 INFO L225 Difference]: With dead ends: 702 [2022-11-19 07:54:15,843 INFO L226 Difference]: Without dead ends: 702 [2022-11-19 07:54:15,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2022-11-19 07:54:15,844 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 114 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:54:15,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 32 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:54:15,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2022-11-19 07:54:15,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 570. [2022-11-19 07:54:15,898 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) [2022-11-19 07:54:15,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 1856 transitions. [2022-11-19 07:54:15,901 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 1856 transitions. Word has length 30 [2022-11-19 07:54:15,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:54:15,902 INFO L495 AbstractCegarLoop]: Abstraction has 570 states and 1856 transitions. [2022-11-19 07:54:15,902 INFO L496 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) [2022-11-19 07:54:15,902 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 1856 transitions. [2022-11-19 07:54:15,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-19 07:54:15,904 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:54:15,904 INFO L195 NwaCegarLoop]: 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] [2022-11-19 07:54:15,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1345dec-b917-4f3b-9fed-cb5b276ac380/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-19 07:54:16,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1345dec-b917-4f3b-9fed-cb5b276ac380/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:54:16,110 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-19 07:54:16,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:54:16,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1073733589, now seen corresponding path program 5 times [2022-11-19 07:54:16,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:54:16,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520584970] [2022-11-19 07:54:16,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:54:16,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:54:16,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:54:16,370 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 07:54:16,370 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:54:16,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520584970] [2022-11-19 07:54:16,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520584970] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:54:16,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285456283] [2022-11-19 07:54:16,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:54:16,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:54:16,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1345dec-b917-4f3b-9fed-cb5b276ac380/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:54:16,372 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1345dec-b917-4f3b-9fed-cb5b276ac380/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:54:16,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1345dec-b917-4f3b-9fed-cb5b276ac380/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-19 07:54:16,525 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-19 07:54:16,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:54:16,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 07:54:16,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:54:16,593 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-19 07:54:16,593 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:54:16,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285456283] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:54:16,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:54:16,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 12 [2022-11-19 07:54:16,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001440487] [2022-11-19 07:54:16,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:54:16,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:54:16,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:54:16,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:54:16,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-19 07:54:16,597 INFO L87 Difference]: Start difference. First operand 570 states and 1856 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) [2022-11-19 07:54:16,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:54:16,841 INFO L93 Difference]: Finished difference Result 1125 states and 3649 transitions. [2022-11-19 07:54:16,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:54:16,842 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 [2022-11-19 07:54:16,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:54:16,848 INFO L225 Difference]: With dead ends: 1125 [2022-11-19 07:54:16,848 INFO L226 Difference]: Without dead ends: 1108 [2022-11-19 07:54:16,848 INFO L412 NwaCegarLoop]: 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 [2022-11-19 07:54:16,849 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 62 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:54:16,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 42 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:54:16,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2022-11-19 07:54:16,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 584. [2022-11-19 07:54:16,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 583 states have (on average 3.313893653516295) internal successors, (1932), 583 states have internal predecessors, (1932), 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) [2022-11-19 07:54:16,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 1932 transitions. [2022-11-19 07:54:16,879 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 1932 transitions. Word has length 30 [2022-11-19 07:54:16,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:54:16,879 INFO L495 AbstractCegarLoop]: Abstraction has 584 states and 1932 transitions. [2022-11-19 07:54:16,880 INFO L496 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) [2022-11-19 07:54:16,880 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 1932 transitions. [2022-11-19 07:54:16,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-19 07:54:16,882 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:54:16,882 INFO L195 NwaCegarLoop]: 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] [2022-11-19 07:54:16,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1345dec-b917-4f3b-9fed-cb5b276ac380/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-19 07:54:17,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1345dec-b917-4f3b-9fed-cb5b276ac380/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:54:17,088 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-19 07:54:17,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:54:17,088 INFO L85 PathProgramCache]: Analyzing trace with hash -329031091, now seen corresponding path program 6 times [2022-11-19 07:54:17,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:54:17,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658604471] [2022-11-19 07:54:17,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:54:17,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:54:17,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:54:17,342 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 07:54:17,343 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:54:17,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658604471] [2022-11-19 07:54:17,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658604471] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:54:17,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451343358] [2022-11-19 07:54:17,343 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 07:54:17,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:54:17,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1345dec-b917-4f3b-9fed-cb5b276ac380/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:54:17,347 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1345dec-b917-4f3b-9fed-cb5b276ac380/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:54:17,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1345dec-b917-4f3b-9fed-cb5b276ac380/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-19 07:54:17,469 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 07:54:17,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:54:17,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:54:17,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:54:17,547 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 07:54:17,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:54:17,621 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 07:54:17,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451343358] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:54:17,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [931165044] [2022-11-19 07:54:17,622 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:1621) 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:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) 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) [2022-11-19 07:54:17,623 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:54:17,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-11-19 07:54:17,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366022962] [2022-11-19 07:54:17,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:54:17,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-19 07:54:17,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:54:17,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-19 07:54:17,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2022-11-19 07:54:17,625 INFO L87 Difference]: Start difference. First operand 584 states and 1932 transitions. Second operand has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 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) [2022-11-19 07:54:18,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:54:18,689 INFO L93 Difference]: Finished difference Result 1188 states and 3950 transitions. [2022-11-19 07:54:18,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-19 07:54:18,691 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 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 [2022-11-19 07:54:18,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:54:18,698 INFO L225 Difference]: With dead ends: 1188 [2022-11-19 07:54:18,698 INFO L226 Difference]: Without dead ends: 1188 [2022-11-19 07:54:18,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 51 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=285, Invalid=707, Unknown=0, NotChecked=0, Total=992 [2022-11-19 07:54:18,699 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 224 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:54:18,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 91 Invalid, 996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 982 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-19 07:54:18,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1188 states. [2022-11-19 07:54:18,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1188 to 570. [2022-11-19 07:54:18,728 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) [2022-11-19 07:54:18,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 1856 transitions. [2022-11-19 07:54:18,731 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 1856 transitions. Word has length 30 [2022-11-19 07:54:18,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:54:18,731 INFO L495 AbstractCegarLoop]: Abstraction has 570 states and 1856 transitions. [2022-11-19 07:54:18,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 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) [2022-11-19 07:54:18,732 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 1856 transitions. [2022-11-19 07:54:18,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-19 07:54:18,734 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:54:18,735 INFO L195 NwaCegarLoop]: 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] [2022-11-19 07:54:18,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1345dec-b917-4f3b-9fed-cb5b276ac380/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-19 07:54:18,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1345dec-b917-4f3b-9fed-cb5b276ac380/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:54:18,943 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-19 07:54:18,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:54:18,944 INFO L85 PathProgramCache]: Analyzing trace with hash -2086424001, now seen corresponding path program 1 times [2022-11-19 07:54:18,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:54:18,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223057236] [2022-11-19 07:54:18,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:54:18,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:54:19,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:54:22,669 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-19 07:54:22,670 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:54:22,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223057236] [2022-11-19 07:54:22,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223057236] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:54:22,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540098620] [2022-11-19 07:54:22,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:54:22,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:54:22,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1345dec-b917-4f3b-9fed-cb5b276ac380/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:54:22,672 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1345dec-b917-4f3b-9fed-cb5b276ac380/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:54:22,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1345dec-b917-4f3b-9fed-cb5b276ac380/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-19 07:54:22,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:54:22,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 81 conjunts are in the unsatisfiable core [2022-11-19 07:54:22,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:54:23,018 INFO L321 Elim1Store]: treesize reduction 76, result has 30.3 percent of original size [2022-11-19 07:54:23,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 854 treesize of output 860 [2022-11-19 07:54:23,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:54:23,306 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 07:54:23,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 29 [2022-11-19 07:54:23,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:54:23,479 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-19 07:54:23,479 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 27 treesize of output 45 [2022-11-19 07:54:23,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:54:23,657 INFO L321 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2022-11-19 07:54:23,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 32 [2022-11-19 07:54:24,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 24 [2022-11-19 07:54:24,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:54:24,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 32 [2022-11-19 07:54:25,736 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-11-19 07:54:25,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 58 [2022-11-19 07:54:26,282 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-19 07:54:26,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:54:40,468 INFO L321 Elim1Store]: treesize reduction 42, result has 62.5 percent of original size [2022-11-19 07:54:40,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 309 treesize of output 169 [2022-11-19 07:54:40,646 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:54:40,647 INFO L350 Elim1Store]: Elim1 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 2673 treesize of output 2525 [2022-11-19 07:54:40,849 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:54:40,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 3428 treesize of output 2722 [2022-11-19 07:54:42,801 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:54:42,802 INFO L350 Elim1Store]: Elim1 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 2575 treesize of output 2485 [2022-11-19 07:56:17,834 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 07:56:55,346 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 07:57:31,374 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 07:58:47,077 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 07:59:20,690 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-19 07:59:26,644 WARN L233 SmtUtils]: Spent 5.90s on a formula simplification. DAG size of input: 480 DAG size of output: 480 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-19 08:01:11,480 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:01:44,002 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:02:07,018 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-19 08:02:13,021 WARN L233 SmtUtils]: Spent 5.95s on a formula simplification. DAG size of input: 485 DAG size of output: 485 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-19 08:03:24,542 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:04:11,054 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-19 08:04:16,946 WARN L233 SmtUtils]: Spent 5.84s on a formula simplification. DAG size of input: 482 DAG size of output: 482 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-19 08:05:18,610 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:05:18,632 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:05:18,640 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-19 08:05:18,641 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2022-11-19 08:05:43,884 WARN L233 SmtUtils]: Spent 25.10s on a formula simplification. DAG size of input: 713 DAG size of output: 713 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)