./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix055.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00a317c1-3f23-469d-8656-57da982d8a2a/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00a317c1-3f23-469d-8656-57da982d8a2a/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00a317c1-3f23-469d-8656-57da982d8a2a/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00a317c1-3f23-469d-8656-57da982d8a2a/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix055.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00a317c1-3f23-469d-8656-57da982d8a2a/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00a317c1-3f23-469d-8656-57da982d8a2a/bin/utaipan-TEXQjIfE4P --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 a4ebc4444460a05c0fe2d26c6269a3bce4de01cd65e247714c5237856dd0f827 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:03:15,907 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:03:15,909 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:03:15,958 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:03:15,958 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:03:15,960 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:03:15,962 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:03:15,965 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:03:15,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:03:15,969 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:03:15,970 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:03:15,972 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:03:15,972 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:03:15,974 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:03:15,991 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:03:15,992 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:03:15,994 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:03:15,995 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:03:15,997 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:03:16,000 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:03:16,006 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:03:16,011 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:03:16,016 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:03:16,017 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:03:16,027 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:03:16,028 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:03:16,028 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:03:16,029 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:03:16,030 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:03:16,031 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:03:16,031 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:03:16,032 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:03:16,033 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:03:16,036 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:03:16,038 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:03:16,039 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:03:16,039 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:03:16,040 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:03:16,041 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:03:16,045 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:03:16,046 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:03:16,046 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00a317c1-3f23-469d-8656-57da982d8a2a/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 00:03:16,092 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:03:16,092 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:03:16,093 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:03:16,093 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:03:16,094 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:03:16,094 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:03:16,094 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:03:16,095 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:03:16,095 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:03:16,095 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:03:16,096 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:03:16,096 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:03:16,096 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:03:16,096 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:03:16,097 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:03:16,097 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:03:16,097 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:03:16,097 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:03:16,098 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:03:16,098 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 00:03:16,098 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:03:16,098 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 00:03:16,099 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:03:16,099 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:03:16,099 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:03:16,099 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:03:16,101 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 00:03:16,101 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:03:16,101 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:03:16,101 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:03:16,102 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:03:16,102 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:03:16,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:03:16,102 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:03:16,102 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:03:16,103 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:03:16,103 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:03:16,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:03:16,103 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:03:16,103 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:03:16,104 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:03:16,104 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00a317c1-3f23-469d-8656-57da982d8a2a/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00a317c1-3f23-469d-8656-57da982d8a2a/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a4ebc4444460a05c0fe2d26c6269a3bce4de01cd65e247714c5237856dd0f827 [2021-11-21 00:03:16,363 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:03:16,398 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:03:16,401 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:03:16,402 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:03:16,403 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:03:16,404 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00a317c1-3f23-469d-8656-57da982d8a2a/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/pthread-wmm/mix055.opt.i [2021-11-21 00:03:16,478 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00a317c1-3f23-469d-8656-57da982d8a2a/bin/utaipan-TEXQjIfE4P/data/8ca439926/213602e9a5514093b6630d86a13eccad/FLAG25569144b [2021-11-21 00:03:17,064 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:03:17,064 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00a317c1-3f23-469d-8656-57da982d8a2a/sv-benchmarks/c/pthread-wmm/mix055.opt.i [2021-11-21 00:03:17,080 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00a317c1-3f23-469d-8656-57da982d8a2a/bin/utaipan-TEXQjIfE4P/data/8ca439926/213602e9a5514093b6630d86a13eccad/FLAG25569144b [2021-11-21 00:03:17,325 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00a317c1-3f23-469d-8656-57da982d8a2a/bin/utaipan-TEXQjIfE4P/data/8ca439926/213602e9a5514093b6630d86a13eccad [2021-11-21 00:03:17,327 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:03:17,329 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:03:17,330 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:03:17,330 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:03:17,348 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:03:17,348 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:03:17" (1/1) ... [2021-11-21 00:03:17,349 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62331e10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:03:17, skipping insertion in model container [2021-11-21 00:03:17,350 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:03:17" (1/1) ... [2021-11-21 00:03:17,356 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:03:17,425 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:03:17,587 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00a317c1-3f23-469d-8656-57da982d8a2a/sv-benchmarks/c/pthread-wmm/mix055.opt.i[944,957] [2021-11-21 00:03:17,860 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:03:17,869 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:03:17,879 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00a317c1-3f23-469d-8656-57da982d8a2a/sv-benchmarks/c/pthread-wmm/mix055.opt.i[944,957] [2021-11-21 00:03:17,946 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:03:18,000 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:03:18,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:03:18 WrapperNode [2021-11-21 00:03:18,001 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:03:18,002 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:03:18,002 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:03:18,002 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:03:18,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:03:18" (1/1) ... [2021-11-21 00:03:18,052 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:03:18" (1/1) ... [2021-11-21 00:03:18,096 INFO L137 Inliner]: procedures = 177, calls = 67, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 290 [2021-11-21 00:03:18,097 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:03:18,097 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:03:18,098 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:03:18,098 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:03:18,113 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:03:18" (1/1) ... [2021-11-21 00:03:18,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:03:18" (1/1) ... [2021-11-21 00:03:18,127 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:03:18" (1/1) ... [2021-11-21 00:03:18,127 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:03:18" (1/1) ... [2021-11-21 00:03:18,153 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:03:18" (1/1) ... [2021-11-21 00:03:18,157 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:03:18" (1/1) ... [2021-11-21 00:03:18,159 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:03:18" (1/1) ... [2021-11-21 00:03:18,164 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:03:18,185 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:03:18,186 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:03:18,186 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:03:18,187 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:03:18" (1/1) ... [2021-11-21 00:03:18,200 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:03:18,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00a317c1-3f23-469d-8656-57da982d8a2a/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:03:18,226 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00a317c1-3f23-469d-8656-57da982d8a2a/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:03:18,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00a317c1-3f23-469d-8656-57da982d8a2a/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:03:18,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 00:03:18,262 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-21 00:03:18,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:03:18,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 00:03:18,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:03:18,263 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-11-21 00:03:18,263 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-11-21 00:03:18,263 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-11-21 00:03:18,263 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-11-21 00:03:18,263 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-11-21 00:03:18,263 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-11-21 00:03:18,264 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-11-21 00:03:18,264 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-11-21 00:03:18,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:03:18,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-21 00:03:18,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:03:18,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:03:18,266 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-21 00:03:18,422 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:03:18,426 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:03:18,946 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:03:19,199 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:03:19,199 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-21 00:03:19,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:03:19 BoogieIcfgContainer [2021-11-21 00:03:19,202 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:03:19,204 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:03:19,204 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:03:19,211 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:03:19,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:03:17" (1/3) ... [2021-11-21 00:03:19,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c26ffd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:03:19, skipping insertion in model container [2021-11-21 00:03:19,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:03:18" (2/3) ... [2021-11-21 00:03:19,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c26ffd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:03:19, skipping insertion in model container [2021-11-21 00:03:19,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:03:19" (3/3) ... [2021-11-21 00:03:19,218 INFO L111 eAbstractionObserver]: Analyzing ICFG mix055.opt.i [2021-11-21 00:03:19,224 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-21 00:03:19,224 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:03:19,225 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-21 00:03:19,225 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-21 00:03:19,302 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,303 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,303 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,303 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,304 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,304 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,304 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,304 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,305 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,305 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,305 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,306 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,306 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,306 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,306 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,306 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,307 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,307 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,307 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,307 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,308 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,308 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,308 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,308 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,308 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,309 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,309 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,309 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,309 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,309 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,309 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,309 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,310 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,310 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,310 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,334 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,334 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,334 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,334 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,335 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,335 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,336 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,336 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,336 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,336 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,336 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,337 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,337 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,337 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,338 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,338 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,338 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,338 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,339 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,339 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,339 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,339 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,339 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,340 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,340 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,340 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,340 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,341 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,341 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,341 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,341 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,342 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,342 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,342 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,342 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,342 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,343 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,343 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,343 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,344 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,344 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,344 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,344 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,344 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,344 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,345 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,345 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,346 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,346 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,349 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,349 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,349 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,350 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,350 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,350 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,350 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,350 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,351 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,351 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,352 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,352 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,352 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,352 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,353 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,353 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,353 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,354 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,354 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,354 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,354 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,354 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,355 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,355 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,355 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,355 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,356 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,356 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,357 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,357 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:03:19,357 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-21 00:03:19,401 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:03:19,408 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 00:03:19,408 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-21 00:03:19,423 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-21 00:03:19,436 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 144 places, 133 transitions, 286 flow [2021-11-21 00:03:19,439 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 144 places, 133 transitions, 286 flow [2021-11-21 00:03:19,441 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 144 places, 133 transitions, 286 flow [2021-11-21 00:03:19,496 INFO L129 PetriNetUnfolder]: 2/129 cut-off events. [2021-11-21 00:03:19,497 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-21 00:03:19,501 INFO L84 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 129 events. 2/129 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 60 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2021-11-21 00:03:19,505 INFO L116 LiptonReduction]: Number of co-enabled transitions 2952 [2021-11-21 00:03:29,036 INFO L131 LiptonReduction]: Checked pairs total: 7183 [2021-11-21 00:03:29,036 INFO L133 LiptonReduction]: Total number of compositions: 114 [2021-11-21 00:03:29,044 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 45 places, 33 transitions, 86 flow [2021-11-21 00:03:29,208 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2762 states, 2759 states have (on average 4.042044218919899) internal successors, (11152), 2761 states have internal predecessors, (11152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:03:29,222 INFO L276 IsEmpty]: Start isEmpty. Operand has 2762 states, 2759 states have (on average 4.042044218919899) internal successors, (11152), 2761 states have internal predecessors, (11152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:03:29,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-21 00:03:29,229 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:03:29,230 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:03:29,231 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-21 00:03:29,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:03:29,236 INFO L85 PathProgramCache]: Analyzing trace with hash 408034618, now seen corresponding path program 1 times [2021-11-21 00:03:29,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:03:29,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806651683] [2021-11-21 00:03:29,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:03:29,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:03:29,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:03:29,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:03:29,491 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:03:29,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806651683] [2021-11-21 00:03:29,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806651683] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:03:29,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:03:29,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-21 00:03:29,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295170010] [2021-11-21 00:03:29,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:03:29,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:03:29,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:03:29,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:03:29,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:03:29,538 INFO L87 Difference]: Start difference. First operand has 2762 states, 2759 states have (on average 4.042044218919899) internal successors, (11152), 2761 states have internal predecessors, (11152), 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 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:03:29,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:03:29,682 INFO L93 Difference]: Finished difference Result 2282 states and 8688 transitions. [2021-11-21 00:03:29,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:03:29,685 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2021-11-21 00:03:29,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:03:29,774 INFO L225 Difference]: With dead ends: 2282 [2021-11-21 00:03:29,774 INFO L226 Difference]: Without dead ends: 2202 [2021-11-21 00:03:29,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:03:29,783 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 12 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:03:29,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 8 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:03:29,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2202 states. [2021-11-21 00:03:29,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2202 to 2202. [2021-11-21 00:03:29,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2202 states, 2201 states have (on average 3.8273512039981825) internal successors, (8424), 2201 states have internal predecessors, (8424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:03:29,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2202 states to 2202 states and 8424 transitions. [2021-11-21 00:03:29,976 INFO L78 Accepts]: Start accepts. Automaton has 2202 states and 8424 transitions. Word has length 9 [2021-11-21 00:03:29,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:03:29,977 INFO L470 AbstractCegarLoop]: Abstraction has 2202 states and 8424 transitions. [2021-11-21 00:03:29,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:03:29,977 INFO L276 IsEmpty]: Start isEmpty. Operand 2202 states and 8424 transitions. [2021-11-21 00:03:29,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-21 00:03:29,981 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:03:29,981 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:03:29,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:03:29,982 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-21 00:03:29,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:03:29,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1004974043, now seen corresponding path program 1 times [2021-11-21 00:03:29,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:03:29,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652664405] [2021-11-21 00:03:29,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:03:29,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:03:30,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:03:30,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:03:30,189 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:03:30,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652664405] [2021-11-21 00:03:30,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652664405] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:03:30,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:03:30,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 00:03:30,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308064673] [2021-11-21 00:03:30,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:03:30,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:03:30,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:03:30,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:03:30,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:03:30,192 INFO L87 Difference]: Start difference. First operand 2202 states and 8424 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:03:30,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:03:30,433 INFO L93 Difference]: Finished difference Result 2502 states and 9254 transitions. [2021-11-21 00:03:30,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:03:30,434 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 12 [2021-11-21 00:03:30,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:03:30,465 INFO L225 Difference]: With dead ends: 2502 [2021-11-21 00:03:30,465 INFO L226 Difference]: Without dead ends: 2102 [2021-11-21 00:03:30,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:03:30,467 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 35 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:03:30,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 18 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:03:30,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2102 states. [2021-11-21 00:03:30,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2102 to 2102. [2021-11-21 00:03:30,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2102 states, 2101 states have (on average 3.7905759162303663) internal successors, (7964), 2101 states have internal predecessors, (7964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:03:30,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2102 states to 2102 states and 7964 transitions. [2021-11-21 00:03:30,588 INFO L78 Accepts]: Start accepts. Automaton has 2102 states and 7964 transitions. Word has length 12 [2021-11-21 00:03:30,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:03:30,588 INFO L470 AbstractCegarLoop]: Abstraction has 2102 states and 7964 transitions. [2021-11-21 00:03:30,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:03:30,589 INFO L276 IsEmpty]: Start isEmpty. Operand 2102 states and 7964 transitions. [2021-11-21 00:03:30,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-21 00:03:30,592 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:03:30,592 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:03:30,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 00:03:30,593 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-21 00:03:30,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:03:30,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1983095488, now seen corresponding path program 1 times [2021-11-21 00:03:30,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:03:30,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216854059] [2021-11-21 00:03:30,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:03:30,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:03:30,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:03:30,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:03:30,757 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:03:30,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216854059] [2021-11-21 00:03:30,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216854059] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:03:30,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:03:30,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:03:30,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641249738] [2021-11-21 00:03:30,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:03:30,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:03:30,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:03:30,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:03:30,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:03:30,763 INFO L87 Difference]: Start difference. First operand 2102 states and 7964 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:03:30,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:03:30,988 INFO L93 Difference]: Finished difference Result 2396 states and 8804 transitions. [2021-11-21 00:03:30,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:03:30,989 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2021-11-21 00:03:30,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:03:31,010 INFO L225 Difference]: With dead ends: 2396 [2021-11-21 00:03:31,010 INFO L226 Difference]: Without dead ends: 2046 [2021-11-21 00:03:31,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:03:31,012 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 37 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:03:31,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 24 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:03:31,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2046 states. [2021-11-21 00:03:31,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2046 to 2046. [2021-11-21 00:03:31,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2046 states, 2045 states have (on average 3.773105134474328) internal successors, (7716), 2045 states have internal predecessors, (7716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:03:31,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2046 states to 2046 states and 7716 transitions. [2021-11-21 00:03:31,104 INFO L78 Accepts]: Start accepts. Automaton has 2046 states and 7716 transitions. Word has length 13 [2021-11-21 00:03:31,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:03:31,104 INFO L470 AbstractCegarLoop]: Abstraction has 2046 states and 7716 transitions. [2021-11-21 00:03:31,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:03:31,105 INFO L276 IsEmpty]: Start isEmpty. Operand 2046 states and 7716 transitions. [2021-11-21 00:03:31,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-21 00:03:31,107 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:03:31,107 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:03:31,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 00:03:31,108 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-21 00:03:31,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:03:31,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1411533711, now seen corresponding path program 1 times [2021-11-21 00:03:31,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:03:31,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099002371] [2021-11-21 00:03:31,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:03:31,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:03:31,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:03:31,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:03:31,397 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:03:31,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099002371] [2021-11-21 00:03:31,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099002371] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:03:31,397 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:03:31,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:03:31,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343298113] [2021-11-21 00:03:31,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:03:31,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:03:31,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:03:31,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:03:31,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:03:31,403 INFO L87 Difference]: Start difference. First operand 2046 states and 7716 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:03:31,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:03:31,679 INFO L93 Difference]: Finished difference Result 2486 states and 9258 transitions. [2021-11-21 00:03:31,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 00:03:31,680 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 14 [2021-11-21 00:03:31,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:03:31,703 INFO L225 Difference]: With dead ends: 2486 [2021-11-21 00:03:31,703 INFO L226 Difference]: Without dead ends: 2206 [2021-11-21 00:03:31,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:03:31,704 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 61 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:03:31,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 38 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 00:03:31,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2206 states. [2021-11-21 00:03:31,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2206 to 2206. [2021-11-21 00:03:31,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2206 states, 2205 states have (on average 3.7823129251700682) internal successors, (8340), 2205 states have internal predecessors, (8340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:03:31,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2206 states to 2206 states and 8340 transitions. [2021-11-21 00:03:31,839 INFO L78 Accepts]: Start accepts. Automaton has 2206 states and 8340 transitions. Word has length 14 [2021-11-21 00:03:31,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:03:31,840 INFO L470 AbstractCegarLoop]: Abstraction has 2206 states and 8340 transitions. [2021-11-21 00:03:31,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:03:31,840 INFO L276 IsEmpty]: Start isEmpty. Operand 2206 states and 8340 transitions. [2021-11-21 00:03:31,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-21 00:03:31,843 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:03:31,843 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:03:31,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 00:03:31,843 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-21 00:03:31,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:03:31,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1346406741, now seen corresponding path program 2 times [2021-11-21 00:03:31,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:03:31,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831666805] [2021-11-21 00:03:31,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:03:31,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:03:31,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:03:32,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:03:32,075 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:03:32,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831666805] [2021-11-21 00:03:32,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831666805] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:03:32,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:03:32,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:03:32,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179188183] [2021-11-21 00:03:32,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:03:32,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:03:32,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:03:32,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:03:32,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:03:32,077 INFO L87 Difference]: Start difference. First operand 2206 states and 8340 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:03:32,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:03:32,334 INFO L93 Difference]: Finished difference Result 2374 states and 8734 transitions. [2021-11-21 00:03:32,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:03:32,334 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 14 [2021-11-21 00:03:32,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:03:32,358 INFO L225 Difference]: With dead ends: 2374 [2021-11-21 00:03:32,359 INFO L226 Difference]: Without dead ends: 2094 [2021-11-21 00:03:32,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:03:32,362 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 67 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:03:32,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 26 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:03:32,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2094 states. [2021-11-21 00:03:32,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2094 to 2094. [2021-11-21 00:03:32,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2094 states, 2093 states have (on average 3.747730530339226) internal successors, (7844), 2093 states have internal predecessors, (7844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:03:32,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2094 states to 2094 states and 7844 transitions. [2021-11-21 00:03:32,475 INFO L78 Accepts]: Start accepts. Automaton has 2094 states and 7844 transitions. Word has length 14 [2021-11-21 00:03:32,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:03:32,475 INFO L470 AbstractCegarLoop]: Abstraction has 2094 states and 7844 transitions. [2021-11-21 00:03:32,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:03:32,475 INFO L276 IsEmpty]: Start isEmpty. Operand 2094 states and 7844 transitions. [2021-11-21 00:03:32,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-21 00:03:32,479 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:03:32,480 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:03:32,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 00:03:32,480 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-21 00:03:32,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:03:32,481 INFO L85 PathProgramCache]: Analyzing trace with hash -465715047, now seen corresponding path program 1 times [2021-11-21 00:03:32,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:03:32,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475164911] [2021-11-21 00:03:32,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:03:32,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:03:32,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:03:32,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:03:32,627 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:03:32,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475164911] [2021-11-21 00:03:32,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475164911] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:03:32,627 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:03:32,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:03:32,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175705553] [2021-11-21 00:03:32,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:03:32,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:03:32,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:03:32,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:03:32,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:03:32,629 INFO L87 Difference]: Start difference. First operand 2094 states and 7844 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:03:32,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:03:32,882 INFO L93 Difference]: Finished difference Result 2236 states and 8220 transitions. [2021-11-21 00:03:32,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:03:32,883 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 15 [2021-11-21 00:03:32,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:03:32,925 INFO L225 Difference]: With dead ends: 2236 [2021-11-21 00:03:32,925 INFO L226 Difference]: Without dead ends: 2026 [2021-11-21 00:03:32,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:03:32,926 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 50 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:03:32,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 32 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 00:03:32,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2026 states. [2021-11-21 00:03:32,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2026 to 2010. [2021-11-21 00:03:33,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2010 states, 2009 states have (on average 3.7332005973120954) internal successors, (7500), 2009 states have internal predecessors, (7500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:03:33,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2010 states to 2010 states and 7500 transitions. [2021-11-21 00:03:33,015 INFO L78 Accepts]: Start accepts. Automaton has 2010 states and 7500 transitions. Word has length 15 [2021-11-21 00:03:33,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:03:33,015 INFO L470 AbstractCegarLoop]: Abstraction has 2010 states and 7500 transitions. [2021-11-21 00:03:33,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:03:33,015 INFO L276 IsEmpty]: Start isEmpty. Operand 2010 states and 7500 transitions. [2021-11-21 00:03:33,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-21 00:03:33,020 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:03:33,020 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:03:33,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 00:03:33,021 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-21 00:03:33,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:03:33,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1548981234, now seen corresponding path program 1 times [2021-11-21 00:03:33,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:03:33,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924473640] [2021-11-21 00:03:33,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:03:33,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:03:33,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:03:33,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:03:33,182 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:03:33,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924473640] [2021-11-21 00:03:33,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924473640] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:03:33,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:03:33,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:03:33,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582020707] [2021-11-21 00:03:33,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:03:33,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:03:33,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:03:33,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:03:33,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:03:33,185 INFO L87 Difference]: Start difference. First operand 2010 states and 7500 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:03:33,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:03:33,287 INFO L93 Difference]: Finished difference Result 1970 states and 6690 transitions. [2021-11-21 00:03:33,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:03:33,287 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 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 16 [2021-11-21 00:03:33,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:03:33,295 INFO L225 Difference]: With dead ends: 1970 [2021-11-21 00:03:33,316 INFO L226 Difference]: Without dead ends: 1538 [2021-11-21 00:03:33,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:03:33,319 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 43 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:03:33,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 12 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:03:33,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1538 states. [2021-11-21 00:03:33,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1538 to 1538. [2021-11-21 00:03:33,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1538 states, 1537 states have (on average 3.3675992192582953) internal successors, (5176), 1537 states have internal predecessors, (5176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:03:33,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 5176 transitions. [2021-11-21 00:03:33,376 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 5176 transitions. Word has length 16 [2021-11-21 00:03:33,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:03:33,376 INFO L470 AbstractCegarLoop]: Abstraction has 1538 states and 5176 transitions. [2021-11-21 00:03:33,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:03:33,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 5176 transitions. [2021-11-21 00:03:33,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-21 00:03:33,380 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:03:33,380 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:03:33,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 00:03:33,380 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-21 00:03:33,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:03:33,381 INFO L85 PathProgramCache]: Analyzing trace with hash 742832548, now seen corresponding path program 1 times [2021-11-21 00:03:33,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:03:33,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930973172] [2021-11-21 00:03:33,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:03:33,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:03:33,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:03:33,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:03:33,519 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:03:33,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930973172] [2021-11-21 00:03:33,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930973172] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:03:33,520 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:03:33,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:03:33,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914426937] [2021-11-21 00:03:33,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:03:33,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:03:33,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:03:33,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:03:33,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:03:33,521 INFO L87 Difference]: Start difference. First operand 1538 states and 5176 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:03:33,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:03:33,642 INFO L93 Difference]: Finished difference Result 1230 states and 3772 transitions. [2021-11-21 00:03:33,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:03:33,642 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2021-11-21 00:03:33,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:03:33,646 INFO L225 Difference]: With dead ends: 1230 [2021-11-21 00:03:33,646 INFO L226 Difference]: Without dead ends: 960 [2021-11-21 00:03:33,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:03:33,647 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 84 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:03:33,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 16 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:03:33,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2021-11-21 00:03:33,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 960. [2021-11-21 00:03:33,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 959 states have (on average 3.011470281543274) internal successors, (2888), 959 states have internal predecessors, (2888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:03:33,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 2888 transitions. [2021-11-21 00:03:33,679 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 2888 transitions. Word has length 17 [2021-11-21 00:03:33,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:03:33,680 INFO L470 AbstractCegarLoop]: Abstraction has 960 states and 2888 transitions. [2021-11-21 00:03:33,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:03:33,692 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 2888 transitions. [2021-11-21 00:03:33,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-21 00:03:33,698 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:03:33,699 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:03:33,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 00:03:33,699 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-21 00:03:33,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:03:33,699 INFO L85 PathProgramCache]: Analyzing trace with hash -27070202, now seen corresponding path program 1 times [2021-11-21 00:03:33,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:03:33,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269028336] [2021-11-21 00:03:33,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:03:33,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:03:33,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:03:33,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:03:33,832 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:03:33,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269028336] [2021-11-21 00:03:33,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269028336] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:03:33,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:03:33,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:03:33,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348484147] [2021-11-21 00:03:33,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:03:33,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:03:33,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:03:33,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:03:33,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:03:33,835 INFO L87 Difference]: Start difference. First operand 960 states and 2888 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:03:33,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:03:33,980 INFO L93 Difference]: Finished difference Result 782 states and 2327 transitions. [2021-11-21 00:03:33,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:03:33,981 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 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 19 [2021-11-21 00:03:33,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:03:33,984 INFO L225 Difference]: With dead ends: 782 [2021-11-21 00:03:33,984 INFO L226 Difference]: Without dead ends: 692 [2021-11-21 00:03:33,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-11-21 00:03:33,985 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 121 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:03:33,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 20 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:03:33,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2021-11-21 00:03:34,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 660. [2021-11-21 00:03:34,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 659 states have (on average 2.998482549317147) internal successors, (1976), 659 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:03:34,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 1976 transitions. [2021-11-21 00:03:34,008 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 1976 transitions. Word has length 19 [2021-11-21 00:03:34,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:03:34,008 INFO L470 AbstractCegarLoop]: Abstraction has 660 states and 1976 transitions. [2021-11-21 00:03:34,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:03:34,008 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 1976 transitions. [2021-11-21 00:03:34,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-21 00:03:34,011 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:03:34,011 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:03:34,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-21 00:03:34,011 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-21 00:03:34,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:03:34,012 INFO L85 PathProgramCache]: Analyzing trace with hash 804555547, now seen corresponding path program 1 times [2021-11-21 00:03:34,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:03:34,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738538972] [2021-11-21 00:03:34,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:03:34,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:03:34,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:03:34,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:03:34,105 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:03:34,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738538972] [2021-11-21 00:03:34,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738538972] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:03:34,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:03:34,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:03:34,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198598042] [2021-11-21 00:03:34,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:03:34,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:03:34,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:03:34,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:03:34,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:03:34,108 INFO L87 Difference]: Start difference. First operand 660 states and 1976 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:03:34,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:03:34,238 INFO L93 Difference]: Finished difference Result 923 states and 2666 transitions. [2021-11-21 00:03:34,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:03:34,239 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 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 22 [2021-11-21 00:03:34,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:03:34,241 INFO L225 Difference]: With dead ends: 923 [2021-11-21 00:03:34,241 INFO L226 Difference]: Without dead ends: 662 [2021-11-21 00:03:34,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:03:34,242 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 31 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:03:34,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 21 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:03:34,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2021-11-21 00:03:34,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 658. [2021-11-21 00:03:34,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 657 states have (on average 2.8295281582952816) internal successors, (1859), 657 states have internal predecessors, (1859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:03:34,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 1859 transitions. [2021-11-21 00:03:34,268 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 1859 transitions. Word has length 22 [2021-11-21 00:03:34,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:03:34,269 INFO L470 AbstractCegarLoop]: Abstraction has 658 states and 1859 transitions. [2021-11-21 00:03:34,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:03:34,269 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 1859 transitions. [2021-11-21 00:03:34,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-21 00:03:34,272 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:03:34,272 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:03:34,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-21 00:03:34,272 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-21 00:03:34,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:03:34,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1896755613, now seen corresponding path program 2 times [2021-11-21 00:03:34,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:03:34,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182732857] [2021-11-21 00:03:34,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:03:34,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:03:34,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:03:34,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:03:34,401 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:03:34,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182732857] [2021-11-21 00:03:34,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182732857] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:03:34,402 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:03:34,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:03:34,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985586843] [2021-11-21 00:03:34,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:03:34,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:03:34,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:03:34,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:03:34,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:03:34,404 INFO L87 Difference]: Start difference. First operand 658 states and 1859 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:03:34,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:03:34,562 INFO L93 Difference]: Finished difference Result 621 states and 1784 transitions. [2021-11-21 00:03:34,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:03:34,562 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 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 22 [2021-11-21 00:03:34,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:03:34,564 INFO L225 Difference]: With dead ends: 621 [2021-11-21 00:03:34,564 INFO L226 Difference]: Without dead ends: 384 [2021-11-21 00:03:34,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2021-11-21 00:03:34,565 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 185 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:03:34,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 15 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:03:34,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2021-11-21 00:03:34,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 384. [2021-11-21 00:03:34,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 2.7780678851174936) internal successors, (1064), 383 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:03:34,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1064 transitions. [2021-11-21 00:03:34,581 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1064 transitions. Word has length 22 [2021-11-21 00:03:34,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:03:34,581 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 1064 transitions. [2021-11-21 00:03:34,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:03:34,582 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1064 transitions. [2021-11-21 00:03:34,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-21 00:03:34,584 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:03:34,584 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:03:34,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-21 00:03:34,585 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-21 00:03:34,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:03:34,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1959057405, now seen corresponding path program 1 times [2021-11-21 00:03:34,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:03:34,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27319331] [2021-11-21 00:03:34,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:03:34,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:03:34,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:03:34,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:03:34,682 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:03:34,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27319331] [2021-11-21 00:03:34,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27319331] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:03:34,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:03:34,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:03:34,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556913733] [2021-11-21 00:03:34,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:03:34,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:03:34,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:03:34,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:03:34,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:03:34,685 INFO L87 Difference]: Start difference. First operand 384 states and 1064 transitions. Second operand has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:03:34,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:03:34,821 INFO L93 Difference]: Finished difference Result 499 states and 1359 transitions. [2021-11-21 00:03:34,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:03:34,822 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 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 26 [2021-11-21 00:03:34,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:03:34,823 INFO L225 Difference]: With dead ends: 499 [2021-11-21 00:03:34,823 INFO L226 Difference]: Without dead ends: 216 [2021-11-21 00:03:34,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:03:34,824 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 24 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:03:34,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 23 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:03:34,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-11-21 00:03:34,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2021-11-21 00:03:34,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 2.4558139534883723) internal successors, (528), 215 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:03:34,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 528 transitions. [2021-11-21 00:03:34,835 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 528 transitions. Word has length 26 [2021-11-21 00:03:34,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:03:34,835 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 528 transitions. [2021-11-21 00:03:34,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:03:34,836 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 528 transitions. [2021-11-21 00:03:34,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-21 00:03:34,838 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:03:34,838 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:03:34,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-21 00:03:34,839 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-21 00:03:34,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:03:34,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1223176193, now seen corresponding path program 2 times [2021-11-21 00:03:34,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:03:34,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330645570] [2021-11-21 00:03:34,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:03:34,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:03:34,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:03:35,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:03:35,358 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:03:35,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330645570] [2021-11-21 00:03:35,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330645570] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:03:35,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:03:35,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-21 00:03:35,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049295099] [2021-11-21 00:03:35,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:03:35,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-21 00:03:35,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:03:35,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-21 00:03:35,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-21 00:03:35,360 INFO L87 Difference]: Start difference. First operand 216 states and 528 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:03:35,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:03:35,628 INFO L93 Difference]: Finished difference Result 243 states and 583 transitions. [2021-11-21 00:03:35,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 00:03:35,629 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 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 26 [2021-11-21 00:03:35,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:03:35,630 INFO L225 Difference]: With dead ends: 243 [2021-11-21 00:03:35,630 INFO L226 Difference]: Without dead ends: 188 [2021-11-21 00:03:35,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-21 00:03:35,631 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 45 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:03:35,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 54 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 00:03:35,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-11-21 00:03:35,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2021-11-21 00:03:35,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 2.4171122994652405) internal successors, (452), 187 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:03:35,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 452 transitions. [2021-11-21 00:03:35,637 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 452 transitions. Word has length 26 [2021-11-21 00:03:35,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:03:35,638 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 452 transitions. [2021-11-21 00:03:35,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:03:35,638 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 452 transitions. [2021-11-21 00:03:35,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-21 00:03:35,639 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:03:35,639 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:03:35,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-21 00:03:35,639 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-21 00:03:35,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:03:35,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1694622685, now seen corresponding path program 3 times [2021-11-21 00:03:35,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:03:35,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139211545] [2021-11-21 00:03:35,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:03:35,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:03:35,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 00:03:35,689 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-21 00:03:35,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 00:03:35,768 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-21 00:03:35,768 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-21 00:03:35,769 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2021-11-21 00:03:35,771 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2021-11-21 00:03:35,772 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (4 of 7 remaining) [2021-11-21 00:03:35,772 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (3 of 7 remaining) [2021-11-21 00:03:35,772 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION (2 of 7 remaining) [2021-11-21 00:03:35,772 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATION (1 of 7 remaining) [2021-11-21 00:03:35,772 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2021-11-21 00:03:35,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-21 00:03:35,775 INFO L732 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:03:35,780 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-21 00:03:35,780 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 00:03:35,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 12:03:35 BasicIcfg [2021-11-21 00:03:35,870 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 00:03:35,871 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 00:03:35,871 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 00:03:35,871 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 00:03:35,872 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:03:19" (3/4) ... [2021-11-21 00:03:35,873 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-21 00:03:35,983 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00a317c1-3f23-469d-8656-57da982d8a2a/bin/utaipan-TEXQjIfE4P/witness.graphml [2021-11-21 00:03:35,983 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 00:03:35,984 INFO L158 Benchmark]: Toolchain (without parser) took 18654.78ms. Allocated memory was 115.3MB in the beginning and 299.9MB in the end (delta: 184.5MB). Free memory was 88.2MB in the beginning and 152.6MB in the end (delta: -64.4MB). Peak memory consumption was 122.1MB. Max. memory is 16.1GB. [2021-11-21 00:03:35,984 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 88.1MB. Free memory was 55.3MB in the beginning and 55.2MB in the end (delta: 46.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 00:03:35,984 INFO L158 Benchmark]: CACSL2BoogieTranslator took 671.24ms. Allocated memory is still 115.3MB. Free memory was 88.0MB in the beginning and 65.1MB in the end (delta: 22.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-11-21 00:03:35,985 INFO L158 Benchmark]: Boogie Procedure Inliner took 94.83ms. Allocated memory is still 115.3MB. Free memory was 65.0MB in the beginning and 62.0MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-21 00:03:35,986 INFO L158 Benchmark]: Boogie Preprocessor took 67.03ms. Allocated memory is still 115.3MB. Free memory was 62.0MB in the beginning and 59.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 00:03:35,986 INFO L158 Benchmark]: RCFGBuilder took 1016.94ms. Allocated memory is still 115.3MB. Free memory was 59.7MB in the beginning and 44.9MB in the end (delta: 14.8MB). Peak memory consumption was 23.8MB. Max. memory is 16.1GB. [2021-11-21 00:03:35,986 INFO L158 Benchmark]: TraceAbstraction took 16666.22ms. Allocated memory was 115.3MB in the beginning and 299.9MB in the end (delta: 184.5MB). Free memory was 44.4MB in the beginning and 169.3MB in the end (delta: -124.9MB). Peak memory consumption was 60.6MB. Max. memory is 16.1GB. [2021-11-21 00:03:35,987 INFO L158 Benchmark]: Witness Printer took 112.22ms. Allocated memory is still 299.9MB. Free memory was 169.3MB in the beginning and 152.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-21 00:03:35,993 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 88.1MB. Free memory was 55.3MB in the beginning and 55.2MB in the end (delta: 46.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 671.24ms. Allocated memory is still 115.3MB. Free memory was 88.0MB in the beginning and 65.1MB in the end (delta: 22.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 94.83ms. Allocated memory is still 115.3MB. Free memory was 65.0MB in the beginning and 62.0MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.03ms. Allocated memory is still 115.3MB. Free memory was 62.0MB in the beginning and 59.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1016.94ms. Allocated memory is still 115.3MB. Free memory was 59.7MB in the beginning and 44.9MB in the end (delta: 14.8MB). Peak memory consumption was 23.8MB. Max. memory is 16.1GB. * TraceAbstraction took 16666.22ms. Allocated memory was 115.3MB in the beginning and 299.9MB in the end (delta: 184.5MB). Free memory was 44.4MB in the beginning and 169.3MB in the end (delta: -124.9MB). Peak memory consumption was 60.6MB. Max. memory is 16.1GB. * Witness Printer took 112.22ms. Allocated memory is still 299.9MB. Free memory was 169.3MB in the beginning and 152.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.6s, 144 PlacesBefore, 45 PlacesAfterwards, 133 TransitionsBefore, 33 TransitionsAfterwards, 2952 CoEnabledTransitionPairs, 7 FixpointIterations, 44 TrivialSequentialCompositions, 59 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 114 TotalNumberOfCompositions, 7183 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3905, positive: 3720, positive conditional: 0, positive unconditional: 3720, negative: 185, negative conditional: 0, negative unconditional: 185, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2151, positive: 2086, positive conditional: 0, positive unconditional: 2086, negative: 65, negative conditional: 0, negative unconditional: 65, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2151, positive: 2052, positive conditional: 0, positive unconditional: 2052, negative: 99, negative conditional: 0, negative unconditional: 99, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 99, positive: 34, positive conditional: 0, positive unconditional: 34, negative: 65, negative conditional: 0, negative unconditional: 65, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 642, positive: 52, positive conditional: 0, positive unconditional: 52, negative: 590, negative conditional: 0, negative unconditional: 590, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3905, positive: 1634, positive conditional: 0, positive unconditional: 1634, negative: 120, negative conditional: 0, negative unconditional: 120, unknown: 2151, unknown conditional: 0, unknown unconditional: 2151] , Statistics on independence cache: Total cache size (in pairs): 233, Positive cache size: 207, Positive conditional cache size: 0, Positive unconditional cache size: 207, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L710] 0 int __unbuffered_cnt = 0; [L712] 0 int __unbuffered_p1_EAX = 0; [L714] 0 int __unbuffered_p3_EAX = 0; [L716] 0 int a = 0; [L717] 0 _Bool main$tmp_guard0; [L718] 0 _Bool main$tmp_guard1; [L720] 0 int x = 0; [L722] 0 int y = 0; [L724] 0 int z = 0; [L725] 0 _Bool z$flush_delayed; [L726] 0 int z$mem_tmp; [L727] 0 _Bool z$r_buff0_thd0; [L728] 0 _Bool z$r_buff0_thd1; [L729] 0 _Bool z$r_buff0_thd2; [L730] 0 _Bool z$r_buff0_thd3; [L731] 0 _Bool z$r_buff0_thd4; [L732] 0 _Bool z$r_buff1_thd0; [L733] 0 _Bool z$r_buff1_thd1; [L734] 0 _Bool z$r_buff1_thd2; [L735] 0 _Bool z$r_buff1_thd3; [L736] 0 _Bool z$r_buff1_thd4; [L737] 0 _Bool z$read_delayed; [L738] 0 int *z$read_delayed_var; [L739] 0 int z$w_buff0; [L740] 0 _Bool z$w_buff0_used; [L741] 0 int z$w_buff1; [L742] 0 _Bool z$w_buff1_used; [L743] 0 _Bool weak$$choice0; [L744] 0 _Bool weak$$choice2; [L836] 0 pthread_t t1461; [L837] FCALL, FORK 0 pthread_create(&t1461, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1461, ((void *)0), P0, ((void *)0))=-2, t1461={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L838] 0 pthread_t t1462; [L839] FCALL, FORK 0 pthread_create(&t1462, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1462, ((void *)0), P1, ((void *)0))=-1, t1461={5:0}, t1462={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L840] 0 pthread_t t1463; [L841] FCALL, FORK 0 pthread_create(&t1463, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1463, ((void *)0), P2, ((void *)0))=0, t1461={5:0}, t1462={6:0}, t1463={7:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L842] 0 pthread_t t1464; [L843] FCALL, FORK 0 pthread_create(&t1464, ((void *)0), P3, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1464, ((void *)0), P3, ((void *)0))=1, t1461={5:0}, t1462={6:0}, t1463={7:0}, t1464={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L798] 4 z$w_buff1 = z$w_buff0 [L799] 4 z$w_buff0 = 2 [L800] 4 z$w_buff1_used = z$w_buff0_used [L801] 4 z$w_buff0_used = (_Bool)1 [L802] CALL 4 __VERIFIER_assert(!(z$w_buff1_used && z$w_buff0_used)) [L18] COND FALSE 4 !(!expression) [L802] RET 4 __VERIFIER_assert(!(z$w_buff1_used && z$w_buff0_used)) [L803] 4 z$r_buff1_thd0 = z$r_buff0_thd0 [L804] 4 z$r_buff1_thd1 = z$r_buff0_thd1 [L805] 4 z$r_buff1_thd2 = z$r_buff0_thd2 [L806] 4 z$r_buff1_thd3 = z$r_buff0_thd3 [L807] 4 z$r_buff1_thd4 = z$r_buff0_thd4 [L808] 4 z$r_buff0_thd4 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L811] 4 __unbuffered_p3_EAX = a VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L748] 1 a = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L751] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L763] 2 x = 2 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L766] 2 __unbuffered_p1_EAX = y VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L778] 3 y = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L781] 3 z = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, z=1, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L784] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd3 ? z$w_buff1 : z) [L784] EXPR 3 z$w_buff1_used && z$r_buff1_thd3 ? z$w_buff1 : z [L784] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd3 ? z$w_buff1 : z) [L784] 3 z = z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd3 ? z$w_buff1 : z) [L785] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$w_buff0_used [L785] 3 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$w_buff0_used [L786] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$w_buff1_used [L786] 3 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$w_buff1_used [L787] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$r_buff0_thd3 [L787] 3 z$r_buff0_thd3 = z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$r_buff0_thd3 [L788] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$r_buff1_thd3 [L788] 3 z$r_buff1_thd3 = z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$r_buff1_thd3 [L771] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L773] 2 return 0; [L814] EXPR 4 z$w_buff0_used && z$r_buff0_thd4 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd4 ? z$w_buff1 : z) [L814] 4 z = z$w_buff0_used && z$r_buff0_thd4 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd4 ? z$w_buff1 : z) [L815] EXPR 4 z$w_buff0_used && z$r_buff0_thd4 ? (_Bool)0 : z$w_buff0_used [L815] 4 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd4 ? (_Bool)0 : z$w_buff0_used [L816] EXPR 4 z$w_buff0_used && z$r_buff0_thd4 || z$w_buff1_used && z$r_buff1_thd4 ? (_Bool)0 : z$w_buff1_used [L816] 4 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd4 || z$w_buff1_used && z$r_buff1_thd4 ? (_Bool)0 : z$w_buff1_used [L817] EXPR 4 z$w_buff0_used && z$r_buff0_thd4 ? (_Bool)0 : z$r_buff0_thd4 [L817] 4 z$r_buff0_thd4 = z$w_buff0_used && z$r_buff0_thd4 ? (_Bool)0 : z$r_buff0_thd4 [L818] EXPR 4 z$w_buff0_used && z$r_buff0_thd4 || z$w_buff1_used && z$r_buff1_thd4 ? (_Bool)0 : z$r_buff1_thd4 [L818] 4 z$r_buff1_thd4 = z$w_buff0_used && z$r_buff0_thd4 || z$w_buff1_used && z$r_buff1_thd4 ? (_Bool)0 : z$r_buff1_thd4 [L791] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L793] 3 return 0; [L821] 4 __unbuffered_cnt = __unbuffered_cnt + 1 [L823] 4 return 0; [L756] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L758] 1 return 0; [L845] 0 main$tmp_guard0 = __unbuffered_cnt == 4 [L847] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L847] RET 0 assume_abort_if_not(main$tmp_guard0) [L849] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd0 ? z$w_buff1 : z) [L849] EXPR 0 z$w_buff1_used && z$r_buff1_thd0 ? z$w_buff1 : z [L849] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd0 ? z$w_buff1 : z) [L849] 0 z = z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd0 ? z$w_buff1 : z) [L850] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used [L850] 0 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used [L851] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$w_buff1_used [L851] 0 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$w_buff1_used [L852] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0 [L852] 0 z$r_buff0_thd0 = z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0 [L853] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$r_buff1_thd0 [L853] 0 z$r_buff1_thd0 = z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$r_buff1_thd0 [L856] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L857] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L858] 0 z$flush_delayed = weak$$choice2 [L859] 0 z$mem_tmp = z [L860] EXPR 0 !z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff1) [L860] 0 z = !z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff1) [L861] EXPR 0 weak$$choice2 ? z$w_buff0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff0)) [L861] 0 z$w_buff0 = weak$$choice2 ? z$w_buff0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff0)) [L862] EXPR 0 weak$$choice2 ? z$w_buff1 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff1 : z$w_buff1)) [L862] 0 z$w_buff1 = weak$$choice2 ? z$w_buff1 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff1 : z$w_buff1)) [L863] EXPR 0 weak$$choice2 ? z$w_buff0_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used)) [L863] 0 z$w_buff0_used = weak$$choice2 ? z$w_buff0_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used)) [L864] EXPR 0 weak$$choice2 ? z$w_buff1_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L864] 0 z$w_buff1_used = weak$$choice2 ? z$w_buff1_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L865] EXPR 0 weak$$choice2 ? z$r_buff0_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff0_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0)) [L865] 0 z$r_buff0_thd0 = weak$$choice2 ? z$r_buff0_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff0_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0)) [L866] EXPR 0 weak$$choice2 ? z$r_buff1_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff1_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L866] 0 z$r_buff1_thd0 = weak$$choice2 ? z$r_buff1_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff1_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L867] 0 main$tmp_guard1 = !(x == 2 && z == 2 && __unbuffered_p1_EAX == 0 && __unbuffered_p3_EAX == 0) [L868] EXPR 0 z$flush_delayed ? z$mem_tmp : z [L868] 0 z = z$flush_delayed ? z$mem_tmp : z [L869] 0 z$flush_delayed = (_Bool)0 [L871] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\old(expression)=1, \old(expression)=0, \result={0:0}, \result={0:0}, \result={0:0}, __unbuffered_cnt=4, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, expression=0, expression=1, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=50, weak$$choice2=255, x=2, y=1, z=2, z$flush_delayed=0, z$mem_tmp=2, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 843]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 841]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 839]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 837]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 167 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 16.4s, OverallIterations: 14, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.1s, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 9.8s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 795 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 795 mSDsluCounter, 307 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 961 mSDsCounter, 129 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1406 IncrementalHoareTripleChecker+Invalid, 1535 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 129 mSolverCounterUnsat, 92 mSDtfsCounter, 1406 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 75 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2762occurred in iteration=0, InterpolantAutomatonStates: 73, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 13 MinimizatonAttempts, 52 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 251 NumberOfCodeBlocks, 251 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 212 ConstructedInterpolants, 0 QuantifiedInterpolants, 1878 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-21 00:03:36,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00a317c1-3f23-469d-8656-57da982d8a2a/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE