./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe029_power.opt_pso.opt_rmo.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_ded9055f-bc95-427a-8e2e-eb78610d5823/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded9055f-bc95-427a-8e2e-eb78610d5823/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_ded9055f-bc95-427a-8e2e-eb78610d5823/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded9055f-bc95-427a-8e2e-eb78610d5823/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe029_power.opt_pso.opt_rmo.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded9055f-bc95-427a-8e2e-eb78610d5823/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_ded9055f-bc95-427a-8e2e-eb78610d5823/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 9df54eb091d78e0f82ec179542e5b1e4fed45243a056538ca557e474796bb018 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:51:55,985 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:51:55,988 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:51:56,020 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:51:56,021 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:51:56,022 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:51:56,024 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:51:56,026 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:51:56,028 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:51:56,029 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:51:56,034 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:51:56,036 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:51:56,037 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:51:56,042 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:51:56,044 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:51:56,046 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:51:56,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:51:56,051 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:51:56,053 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:51:56,058 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:51:56,065 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:51:56,066 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:51:56,068 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:51:56,069 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:51:56,073 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:51:56,077 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:51:56,078 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:51:56,079 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:51:56,080 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:51:56,081 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:51:56,083 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:51:56,084 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:51:56,086 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:51:56,087 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:51:56,088 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:51:56,088 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:51:56,089 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:51:56,089 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:51:56,090 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:51:56,090 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:51:56,091 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:51:56,092 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded9055f-bc95-427a-8e2e-eb78610d5823/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 01:51:56,133 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:51:56,134 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:51:56,134 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:51:56,134 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:51:56,135 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:51:56,135 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:51:56,135 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:51:56,135 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:51:56,136 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:51:56,136 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:51:56,136 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:51:56,136 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:51:56,136 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:51:56,136 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:51:56,137 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:51:56,137 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:51:56,137 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:51:56,137 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:51:56,138 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:51:56,138 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:51:56,138 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:51:56,138 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:51:56,139 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:51:56,139 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:51:56,139 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:51:56,139 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:51:56,139 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:51:56,139 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:51:56,140 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:51:56,140 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:51:56,140 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:51:56,140 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:51:56,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:51:56,141 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:51:56,141 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:51:56,141 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:51:56,141 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:51:56,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:51:56,146 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:51:56,146 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:51:56,147 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:51:56,147 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_ded9055f-bc95-427a-8e2e-eb78610d5823/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded9055f-bc95-427a-8e2e-eb78610d5823/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9df54eb091d78e0f82ec179542e5b1e4fed45243a056538ca557e474796bb018 [2021-11-21 01:51:56,421 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:51:56,442 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:51:56,445 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:51:56,446 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:51:56,447 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:51:56,448 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded9055f-bc95-427a-8e2e-eb78610d5823/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/pthread-wmm/safe029_power.opt_pso.opt_rmo.opt.i [2021-11-21 01:51:56,511 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded9055f-bc95-427a-8e2e-eb78610d5823/bin/utaipan-TEXQjIfE4P/data/d6da5fc40/9600d621d51a49f28ce8964273711825/FLAGef36b1aa2 [2021-11-21 01:51:57,008 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:51:57,009 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded9055f-bc95-427a-8e2e-eb78610d5823/sv-benchmarks/c/pthread-wmm/safe029_power.opt_pso.opt_rmo.opt.i [2021-11-21 01:51:57,055 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded9055f-bc95-427a-8e2e-eb78610d5823/bin/utaipan-TEXQjIfE4P/data/d6da5fc40/9600d621d51a49f28ce8964273711825/FLAGef36b1aa2 [2021-11-21 01:51:57,344 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded9055f-bc95-427a-8e2e-eb78610d5823/bin/utaipan-TEXQjIfE4P/data/d6da5fc40/9600d621d51a49f28ce8964273711825 [2021-11-21 01:51:57,348 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:51:57,352 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:51:57,355 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:51:57,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:51:57,359 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:51:57,360 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:51:57" (1/1) ... [2021-11-21 01:51:57,362 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@484c31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:51:57, skipping insertion in model container [2021-11-21 01:51:57,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:51:57" (1/1) ... [2021-11-21 01:51:57,385 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:51:57,429 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:51:57,624 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_ded9055f-bc95-427a-8e2e-eb78610d5823/sv-benchmarks/c/pthread-wmm/safe029_power.opt_pso.opt_rmo.opt.i[967,980] [2021-11-21 01:51:57,829 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:51:57,844 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:51:57,864 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_ded9055f-bc95-427a-8e2e-eb78610d5823/sv-benchmarks/c/pthread-wmm/safe029_power.opt_pso.opt_rmo.opt.i[967,980] [2021-11-21 01:51:57,930 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:51:57,968 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:51:57,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:51:57 WrapperNode [2021-11-21 01:51:57,969 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:51:57,970 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:51:57,970 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:51:57,971 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:51:57,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:51:57" (1/1) ... [2021-11-21 01:51:57,995 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:51:57" (1/1) ... [2021-11-21 01:51:58,028 INFO L137 Inliner]: procedures = 175, calls = 41, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 258 [2021-11-21 01:51:58,028 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:51:58,029 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:51:58,029 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:51:58,029 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:51:58,037 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:51:57" (1/1) ... [2021-11-21 01:51:58,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:51:57" (1/1) ... [2021-11-21 01:51:58,041 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:51:57" (1/1) ... [2021-11-21 01:51:58,042 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:51:57" (1/1) ... [2021-11-21 01:51:58,051 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:51:57" (1/1) ... [2021-11-21 01:51:58,054 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:51:57" (1/1) ... [2021-11-21 01:51:58,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:51:57" (1/1) ... [2021-11-21 01:51:58,062 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:51:58,063 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:51:58,064 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:51:58,064 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:51:58,065 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:51:57" (1/1) ... [2021-11-21 01:51:58,072 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:51:58,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded9055f-bc95-427a-8e2e-eb78610d5823/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:51:58,096 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded9055f-bc95-427a-8e2e-eb78610d5823/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:51:58,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded9055f-bc95-427a-8e2e-eb78610d5823/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:51:58,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:51:58,149 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-21 01:51:58,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:51:58,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:51:58,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:51:58,149 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-11-21 01:51:58,150 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-11-21 01:51:58,150 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-11-21 01:51:58,150 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-11-21 01:51:58,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:51:58,150 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-21 01:51:58,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:51:58,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:51:58,152 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 01:51:58,365 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:51:58,367 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:51:58,898 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:51:59,283 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:51:59,283 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-21 01:51:59,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:51:59 BoogieIcfgContainer [2021-11-21 01:51:59,286 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:51:59,288 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:51:59,288 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:51:59,291 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:51:59,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:51:57" (1/3) ... [2021-11-21 01:51:59,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bd09626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:51:59, skipping insertion in model container [2021-11-21 01:51:59,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:51:57" (2/3) ... [2021-11-21 01:51:59,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bd09626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:51:59, skipping insertion in model container [2021-11-21 01:51:59,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:51:59" (3/3) ... [2021-11-21 01:51:59,294 INFO L111 eAbstractionObserver]: Analyzing ICFG safe029_power.opt_pso.opt_rmo.opt.i [2021-11-21 01:51:59,301 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-21 01:51:59,301 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:51:59,301 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-21 01:51:59,301 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-21 01:51:59,342 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,343 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,343 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,344 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,344 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,345 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,345 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,345 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,345 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,346 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,346 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,346 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,346 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,347 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,347 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,347 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,348 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,348 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,349 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,349 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,349 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,349 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,350 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,350 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,350 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,350 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,351 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,351 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,351 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,351 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,352 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,352 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,352 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,352 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,353 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,353 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,353 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,353 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,354 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,354 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,354 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,354 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,354 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,355 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,355 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,355 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,355 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,355 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,355 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,356 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,357 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,357 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,357 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,357 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,357 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,357 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,358 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,358 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,358 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,359 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,363 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,364 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,364 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,364 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,364 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,364 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,365 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,365 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,365 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,365 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,365 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,366 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,366 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,367 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,368 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,370 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,370 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,371 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,371 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,371 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,372 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,372 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:51:59,372 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-21 01:51:59,427 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:51:59,444 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 01:51:59,445 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-21 01:51:59,457 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-21 01:51:59,469 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 93 transitions, 196 flow [2021-11-21 01:51:59,472 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 98 places, 93 transitions, 196 flow [2021-11-21 01:51:59,474 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 98 places, 93 transitions, 196 flow [2021-11-21 01:51:59,523 INFO L129 PetriNetUnfolder]: 2/91 cut-off events. [2021-11-21 01:51:59,524 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-21 01:51:59,528 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 91 events. 2/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2021-11-21 01:51:59,531 INFO L116 LiptonReduction]: Number of co-enabled transitions 1140 [2021-11-21 01:52:16,787 INFO L131 LiptonReduction]: Checked pairs total: 2921 [2021-11-21 01:52:16,788 INFO L133 LiptonReduction]: Total number of compositions: 87 [2021-11-21 01:52:16,803 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 26 places, 19 transitions, 48 flow [2021-11-21 01:52:16,836 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 142 states, 139 states have (on average 2.366906474820144) internal successors, (329), 141 states have internal predecessors, (329), 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 01:52:16,843 INFO L276 IsEmpty]: Start isEmpty. Operand has 142 states, 139 states have (on average 2.366906474820144) internal successors, (329), 141 states have internal predecessors, (329), 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 01:52:16,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-21 01:52:16,848 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:52:16,848 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-21 01:52:16,850 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-11-21 01:52:16,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:52:16,855 INFO L85 PathProgramCache]: Analyzing trace with hash 923072544, now seen corresponding path program 1 times [2021-11-21 01:52:16,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:52:16,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169058736] [2021-11-21 01:52:16,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:52:16,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:52:16,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:52:17,080 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 01:52:17,081 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:52:17,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169058736] [2021-11-21 01:52:17,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169058736] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:52:17,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:52:17,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-21 01:52:17,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524377142] [2021-11-21 01:52:17,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:52:17,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:52:17,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:52:17,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:52:17,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:52:17,117 INFO L87 Difference]: Start difference. First operand has 142 states, 139 states have (on average 2.366906474820144) internal successors, (329), 141 states have internal predecessors, (329), 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 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 01:52:17,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:52:17,206 INFO L93 Difference]: Finished difference Result 117 states and 264 transitions. [2021-11-21 01:52:17,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:52:17,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2021-11-21 01:52:17,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:52:17,221 INFO L225 Difference]: With dead ends: 117 [2021-11-21 01:52:17,222 INFO L226 Difference]: Without dead ends: 112 [2021-11-21 01:52:17,223 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 01:52:17,227 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 4 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:52:17,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 4 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:52:17,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-11-21 01:52:17,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2021-11-21 01:52:17,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 2.2972972972972974) internal successors, (255), 111 states have internal predecessors, (255), 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 01:52:17,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 255 transitions. [2021-11-21 01:52:17,283 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 255 transitions. Word has length 5 [2021-11-21 01:52:17,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:52:17,283 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 255 transitions. [2021-11-21 01:52:17,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 01:52:17,284 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 255 transitions. [2021-11-21 01:52:17,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-21 01:52:17,286 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:52:17,286 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:52:17,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:52:17,287 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-11-21 01:52:17,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:52:17,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1985425406, now seen corresponding path program 1 times [2021-11-21 01:52:17,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:52:17,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844198328] [2021-11-21 01:52:17,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:52:17,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:52:17,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:52:17,520 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 01:52:17,521 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:52:17,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844198328] [2021-11-21 01:52:17,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844198328] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:52:17,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:52:17,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-21 01:52:17,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477846251] [2021-11-21 01:52:17,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:52:17,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:52:17,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:52:17,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:52:17,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:52:17,524 INFO L87 Difference]: Start difference. First operand 112 states and 255 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 01:52:17,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:52:17,556 INFO L93 Difference]: Finished difference Result 110 states and 249 transitions. [2021-11-21 01:52:17,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:52:17,557 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2021-11-21 01:52:17,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:52:17,559 INFO L225 Difference]: With dead ends: 110 [2021-11-21 01:52:17,559 INFO L226 Difference]: Without dead ends: 110 [2021-11-21 01:52:17,559 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 01:52:17,561 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 1 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:52:17,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 3 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:52:17,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-11-21 01:52:17,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2021-11-21 01:52:17,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 2.2844036697247705) internal successors, (249), 109 states have internal predecessors, (249), 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 01:52:17,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 249 transitions. [2021-11-21 01:52:17,573 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 249 transitions. Word has length 7 [2021-11-21 01:52:17,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:52:17,573 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 249 transitions. [2021-11-21 01:52:17,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 01:52:17,573 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 249 transitions. [2021-11-21 01:52:17,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-21 01:52:17,574 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:52:17,575 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:52:17,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:52:17,575 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-11-21 01:52:17,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:52:17,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1419659425, now seen corresponding path program 1 times [2021-11-21 01:52:17,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:52:17,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791981584] [2021-11-21 01:52:17,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:52:17,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:52:17,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:52:17,710 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 01:52:17,710 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:52:17,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791981584] [2021-11-21 01:52:17,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791981584] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:52:17,711 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:52:17,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 01:52:17,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796854174] [2021-11-21 01:52:17,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:52:17,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:52:17,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:52:17,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:52:17,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:52:17,712 INFO L87 Difference]: Start difference. First operand 110 states and 249 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 01:52:17,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:52:17,768 INFO L93 Difference]: Finished difference Result 106 states and 238 transitions. [2021-11-21 01:52:17,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:52:17,769 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2021-11-21 01:52:17,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:52:17,771 INFO L225 Difference]: With dead ends: 106 [2021-11-21 01:52:17,771 INFO L226 Difference]: Without dead ends: 106 [2021-11-21 01:52:17,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:52:17,773 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 9 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:52:17,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 4 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:52:17,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-11-21 01:52:17,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2021-11-21 01:52:17,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 2.2666666666666666) internal successors, (238), 105 states have internal predecessors, (238), 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 01:52:17,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 238 transitions. [2021-11-21 01:52:17,785 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 238 transitions. Word has length 8 [2021-11-21 01:52:17,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:52:17,785 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 238 transitions. [2021-11-21 01:52:17,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 01:52:17,785 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 238 transitions. [2021-11-21 01:52:17,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-21 01:52:17,786 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:52:17,787 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:52:17,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 01:52:17,787 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-11-21 01:52:17,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:52:17,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1059770366, now seen corresponding path program 1 times [2021-11-21 01:52:17,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:52:17,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805773198] [2021-11-21 01:52:17,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:52:17,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:52:17,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:52:17,941 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 01:52:17,941 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:52:17,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805773198] [2021-11-21 01:52:17,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805773198] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:52:17,942 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:52:17,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:52:17,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638417378] [2021-11-21 01:52:17,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:52:17,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:52:17,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:52:17,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:52:17,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:52:17,944 INFO L87 Difference]: Start difference. First operand 106 states and 238 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 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 01:52:18,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:52:18,029 INFO L93 Difference]: Finished difference Result 113 states and 249 transitions. [2021-11-21 01:52:18,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:52:18,030 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 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 01:52:18,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:52:18,034 INFO L225 Difference]: With dead ends: 113 [2021-11-21 01:52:18,035 INFO L226 Difference]: Without dead ends: 113 [2021-11-21 01:52:18,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:52:18,044 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 20 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:52:18,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 6 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:52:18,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-11-21 01:52:18,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2021-11-21 01:52:18,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 2.2232142857142856) internal successors, (249), 112 states have internal predecessors, (249), 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 01:52:18,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 249 transitions. [2021-11-21 01:52:18,073 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 249 transitions. Word has length 9 [2021-11-21 01:52:18,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:52:18,073 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 249 transitions. [2021-11-21 01:52:18,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 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 01:52:18,074 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 249 transitions. [2021-11-21 01:52:18,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-21 01:52:18,076 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:52:18,076 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:52:18,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 01:52:18,076 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-11-21 01:52:18,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:52:18,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1814793730, now seen corresponding path program 1 times [2021-11-21 01:52:18,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:52:18,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684980724] [2021-11-21 01:52:18,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:52:18,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:52:18,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:52:18,172 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 01:52:18,173 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:52:18,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684980724] [2021-11-21 01:52:18,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684980724] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:52:18,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:52:18,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 01:52:18,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175298854] [2021-11-21 01:52:18,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:52:18,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:52:18,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:52:18,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:52:18,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:52:18,175 INFO L87 Difference]: Start difference. First operand 113 states and 249 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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 01:52:18,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:52:18,218 INFO L93 Difference]: Finished difference Result 153 states and 326 transitions. [2021-11-21 01:52:18,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:52:18,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2021-11-21 01:52:18,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:52:18,220 INFO L225 Difference]: With dead ends: 153 [2021-11-21 01:52:18,220 INFO L226 Difference]: Without dead ends: 95 [2021-11-21 01:52:18,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 01:52:18,221 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 6 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:52:18,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 4 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:52:18,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-11-21 01:52:18,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 89. [2021-11-21 01:52:18,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 2.0681818181818183) internal successors, (182), 88 states have internal predecessors, (182), 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 01:52:18,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 182 transitions. [2021-11-21 01:52:18,229 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 182 transitions. Word has length 10 [2021-11-21 01:52:18,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:52:18,229 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 182 transitions. [2021-11-21 01:52:18,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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 01:52:18,230 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 182 transitions. [2021-11-21 01:52:18,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-21 01:52:18,231 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:52:18,231 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:52:18,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 01:52:18,231 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-11-21 01:52:18,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:52:18,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1358068137, now seen corresponding path program 1 times [2021-11-21 01:52:18,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:52:18,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550498726] [2021-11-21 01:52:18,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:52:18,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:52:18,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:52:18,488 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 01:52:18,488 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:52:18,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550498726] [2021-11-21 01:52:18,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550498726] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:52:18,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:52:18,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 01:52:18,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153770917] [2021-11-21 01:52:18,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:52:18,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 01:52:18,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:52:18,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 01:52:18,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:52:18,490 INFO L87 Difference]: Start difference. First operand 89 states and 182 transitions. Second operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 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 01:52:18,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:52:18,629 INFO L93 Difference]: Finished difference Result 86 states and 173 transitions. [2021-11-21 01:52:18,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:52:18,629 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 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 11 [2021-11-21 01:52:18,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:52:18,630 INFO L225 Difference]: With dead ends: 86 [2021-11-21 01:52:18,630 INFO L226 Difference]: Without dead ends: 63 [2021-11-21 01:52:18,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-21 01:52:18,631 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 21 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:52:18,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 5 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:52:18,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-11-21 01:52:18,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2021-11-21 01:52:18,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 2.064516129032258) internal successors, (128), 62 states have internal predecessors, (128), 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 01:52:18,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 128 transitions. [2021-11-21 01:52:18,637 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 128 transitions. Word has length 11 [2021-11-21 01:52:18,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:52:18,637 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 128 transitions. [2021-11-21 01:52:18,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 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 01:52:18,637 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 128 transitions. [2021-11-21 01:52:18,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-21 01:52:18,638 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:52:18,638 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:52:18,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 01:52:18,639 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-11-21 01:52:18,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:52:18,640 INFO L85 PathProgramCache]: Analyzing trace with hash -423992935, now seen corresponding path program 1 times [2021-11-21 01:52:18,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:52:18,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388843305] [2021-11-21 01:52:18,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:52:18,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:52:18,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:52:18,733 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 01:52:18,733 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:52:18,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388843305] [2021-11-21 01:52:18,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388843305] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:52:18,734 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:52:18,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:52:18,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840806045] [2021-11-21 01:52:18,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:52:18,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:52:18,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:52:18,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:52:18,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:52:18,737 INFO L87 Difference]: Start difference. First operand 63 states and 128 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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 01:52:18,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:52:18,804 INFO L93 Difference]: Finished difference Result 57 states and 97 transitions. [2021-11-21 01:52:18,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:52:18,805 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2021-11-21 01:52:18,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:52:18,806 INFO L225 Difference]: With dead ends: 57 [2021-11-21 01:52:18,806 INFO L226 Difference]: Without dead ends: 40 [2021-11-21 01:52:18,806 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 01:52:18,807 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 19 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:52:18,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 8 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:52:18,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-11-21 01:52:18,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-11-21 01:52:18,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.6153846153846154) internal successors, (63), 39 states have internal predecessors, (63), 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 01:52:18,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 63 transitions. [2021-11-21 01:52:18,810 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 63 transitions. Word has length 11 [2021-11-21 01:52:18,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:52:18,810 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 63 transitions. [2021-11-21 01:52:18,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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 01:52:18,811 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 63 transitions. [2021-11-21 01:52:18,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-21 01:52:18,811 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:52:18,811 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:52:18,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 01:52:18,812 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-11-21 01:52:18,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:52:18,812 INFO L85 PathProgramCache]: Analyzing trace with hash -641569163, now seen corresponding path program 1 times [2021-11-21 01:52:18,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:52:18,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335277649] [2021-11-21 01:52:18,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:52:18,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:52:18,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:52:18,945 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 01:52:18,945 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:52:18,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335277649] [2021-11-21 01:52:18,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335277649] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:52:18,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:52:18,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:52:18,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998753955] [2021-11-21 01:52:18,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:52:18,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:52:18,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:52:18,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:52:18,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:52:18,952 INFO L87 Difference]: Start difference. First operand 40 states and 63 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 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 01:52:19,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:52:19,026 INFO L93 Difference]: Finished difference Result 31 states and 43 transitions. [2021-11-21 01:52:19,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:52:19,027 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 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 01:52:19,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:52:19,028 INFO L225 Difference]: With dead ends: 31 [2021-11-21 01:52:19,028 INFO L226 Difference]: Without dead ends: 24 [2021-11-21 01:52:19,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:52:19,029 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 18 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:52:19,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 7 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:52:19,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-21 01:52:19,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-11-21 01:52:19,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 23 states have internal predecessors, (31), 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 01:52:19,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2021-11-21 01:52:19,031 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 12 [2021-11-21 01:52:19,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:52:19,032 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2021-11-21 01:52:19,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 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 01:52:19,032 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2021-11-21 01:52:19,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-21 01:52:19,032 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:52:19,033 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:52:19,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 01:52:19,033 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-11-21 01:52:19,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:52:19,033 INFO L85 PathProgramCache]: Analyzing trace with hash 18991727, now seen corresponding path program 1 times [2021-11-21 01:52:19,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:52:19,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310242331] [2021-11-21 01:52:19,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:52:19,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:52:19,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 01:52:19,074 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-21 01:52:19,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 01:52:19,183 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-21 01:52:19,183 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-21 01:52:19,184 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2021-11-21 01:52:19,186 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2021-11-21 01:52:19,186 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 5 remaining) [2021-11-21 01:52:19,186 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 5 remaining) [2021-11-21 01:52:19,187 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2021-11-21 01:52:19,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-21 01:52:19,189 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:52:19,194 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-21 01:52:19,194 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 01:52:19,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 01:52:19 BasicIcfg [2021-11-21 01:52:19,245 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 01:52:19,246 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 01:52:19,246 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 01:52:19,246 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 01:52:19,247 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:51:59" (3/4) ... [2021-11-21 01:52:19,249 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-21 01:52:19,343 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded9055f-bc95-427a-8e2e-eb78610d5823/bin/utaipan-TEXQjIfE4P/witness.graphml [2021-11-21 01:52:19,343 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 01:52:19,343 INFO L158 Benchmark]: Toolchain (without parser) took 21991.66ms. Allocated memory was 79.7MB in the beginning and 159.4MB in the end (delta: 79.7MB). Free memory was 41.3MB in the beginning and 99.9MB in the end (delta: -58.7MB). Peak memory consumption was 20.5MB. Max. memory is 16.1GB. [2021-11-21 01:52:19,344 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 79.7MB. Free memory was 59.6MB in the beginning and 59.6MB in the end (delta: 44.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:52:19,344 INFO L158 Benchmark]: CACSL2BoogieTranslator took 614.42ms. Allocated memory was 79.7MB in the beginning and 96.5MB in the end (delta: 16.8MB). Free memory was 41.0MB in the beginning and 59.8MB in the end (delta: -18.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-21 01:52:19,345 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.05ms. Allocated memory is still 96.5MB. Free memory was 59.8MB in the beginning and 56.9MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-21 01:52:19,345 INFO L158 Benchmark]: Boogie Preprocessor took 33.74ms. Allocated memory is still 96.5MB. Free memory was 56.9MB in the beginning and 54.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:52:19,346 INFO L158 Benchmark]: RCFGBuilder took 1222.90ms. Allocated memory is still 96.5MB. Free memory was 54.8MB in the beginning and 65.2MB in the end (delta: -10.5MB). Peak memory consumption was 30.2MB. Max. memory is 16.1GB. [2021-11-21 01:52:19,346 INFO L158 Benchmark]: TraceAbstraction took 19957.67ms. Allocated memory was 96.5MB in the beginning and 159.4MB in the end (delta: 62.9MB). Free memory was 64.7MB in the beginning and 108.3MB in the end (delta: -43.6MB). Peak memory consumption was 92.2MB. Max. memory is 16.1GB. [2021-11-21 01:52:19,347 INFO L158 Benchmark]: Witness Printer took 96.98ms. Allocated memory is still 159.4MB. Free memory was 108.3MB in the beginning and 99.9MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-21 01:52:19,349 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 79.7MB. Free memory was 59.6MB in the beginning and 59.6MB in the end (delta: 44.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 614.42ms. Allocated memory was 79.7MB in the beginning and 96.5MB in the end (delta: 16.8MB). Free memory was 41.0MB in the beginning and 59.8MB in the end (delta: -18.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.05ms. Allocated memory is still 96.5MB. Free memory was 59.8MB in the beginning and 56.9MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.74ms. Allocated memory is still 96.5MB. Free memory was 56.9MB in the beginning and 54.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1222.90ms. Allocated memory is still 96.5MB. Free memory was 54.8MB in the beginning and 65.2MB in the end (delta: -10.5MB). Peak memory consumption was 30.2MB. Max. memory is 16.1GB. * TraceAbstraction took 19957.67ms. Allocated memory was 96.5MB in the beginning and 159.4MB in the end (delta: 62.9MB). Free memory was 64.7MB in the beginning and 108.3MB in the end (delta: -43.6MB). Peak memory consumption was 92.2MB. Max. memory is 16.1GB. * Witness Printer took 96.98ms. Allocated memory is still 159.4MB. Free memory was 108.3MB in the beginning and 99.9MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 17.3s, 98 PlacesBefore, 26 PlacesAfterwards, 93 TransitionsBefore, 19 TransitionsAfterwards, 1140 CoEnabledTransitionPairs, 7 FixpointIterations, 36 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 87 TotalNumberOfCompositions, 2921 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1450, positive: 1319, positive conditional: 0, positive unconditional: 1319, negative: 131, negative conditional: 0, negative unconditional: 131, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 846, positive: 798, positive conditional: 0, positive unconditional: 798, negative: 48, negative conditional: 0, negative unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 846, positive: 786, positive conditional: 0, positive unconditional: 786, negative: 60, negative conditional: 0, negative unconditional: 60, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 60, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 48, negative conditional: 0, negative unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 624, positive: 94, positive conditional: 0, positive unconditional: 94, negative: 530, negative conditional: 0, negative unconditional: 530, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1450, positive: 521, positive conditional: 0, positive unconditional: 521, negative: 83, negative conditional: 0, negative unconditional: 83, unknown: 846, unknown conditional: 0, unknown unconditional: 846] , Statistics on independence cache: Total cache size (in pairs): 64, Positive cache size: 46, Positive conditional cache size: 0, Positive unconditional cache size: 46, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18 - 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: [L708] 0 int __unbuffered_cnt = 0; [L709] 0 _Bool main$tmp_guard0; [L710] 0 _Bool main$tmp_guard1; [L712] 0 int x = 0; [L713] 0 _Bool x$flush_delayed; [L714] 0 int x$mem_tmp; [L715] 0 _Bool x$r_buff0_thd0; [L716] 0 _Bool x$r_buff0_thd1; [L717] 0 _Bool x$r_buff0_thd2; [L718] 0 _Bool x$r_buff1_thd0; [L719] 0 _Bool x$r_buff1_thd1; [L720] 0 _Bool x$r_buff1_thd2; [L721] 0 _Bool x$read_delayed; [L722] 0 int *x$read_delayed_var; [L723] 0 int x$w_buff0; [L724] 0 _Bool x$w_buff0_used; [L725] 0 int x$w_buff1; [L726] 0 _Bool x$w_buff1_used; [L728] 0 int y = 0; [L729] 0 _Bool weak$$choice0; [L730] 0 _Bool weak$$choice2; [L790] 0 pthread_t t2475; [L791] FCALL, FORK 0 pthread_create(&t2475, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2475, ((void *)0), P0, ((void *)0))=-2, t2475={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=0] [L792] 0 pthread_t t2476; [L793] FCALL, FORK 0 pthread_create(&t2476, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2476, ((void *)0), P1, ((void *)0))=-1, t2475={5:0}, t2476={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=0] [L754] 2 x$w_buff1 = x$w_buff0 [L755] 2 x$w_buff0 = 2 [L756] 2 x$w_buff1_used = x$w_buff0_used [L757] 2 x$w_buff0_used = (_Bool)1 [L758] CALL 2 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L18] COND FALSE 2 !(!expression) [L758] RET 2 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L759] 2 x$r_buff1_thd0 = x$r_buff0_thd0 [L760] 2 x$r_buff1_thd1 = x$r_buff0_thd1 [L761] 2 x$r_buff1_thd2 = x$r_buff0_thd2 [L762] 2 x$r_buff0_thd2 = (_Bool)1 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=0] [L765] 2 y = 1 VAL [__unbuffered_cnt=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, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=1] [L734] 1 y = 2 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=2] [L737] 1 x = 1 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=2] [L740] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd1 ? x$w_buff1 : x) [L740] EXPR 1 x$w_buff1_used && x$r_buff1_thd1 ? x$w_buff1 : x [L740] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd1 ? x$w_buff1 : x) [L740] 1 x = x$w_buff0_used && x$r_buff0_thd1 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd1 ? x$w_buff1 : x) [L741] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$w_buff0_used [L741] 1 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$w_buff0_used [L742] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$w_buff1_used [L742] 1 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$w_buff1_used [L743] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$r_buff0_thd1 [L743] 1 x$r_buff0_thd1 = x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$r_buff0_thd1 [L744] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$r_buff1_thd1 [L744] 1 x$r_buff1_thd1 = x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$r_buff1_thd1 [L747] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L749] 1 return 0; [L768] EXPR 2 x$w_buff0_used && x$r_buff0_thd2 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd2 ? x$w_buff1 : x) [L768] 2 x = x$w_buff0_used && x$r_buff0_thd2 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd2 ? x$w_buff1 : x) [L769] EXPR 2 x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$w_buff0_used [L769] 2 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$w_buff0_used [L770] EXPR 2 x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$w_buff1_used [L770] 2 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$w_buff1_used [L771] EXPR 2 x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$r_buff0_thd2 [L771] 2 x$r_buff0_thd2 = x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$r_buff0_thd2 [L772] EXPR 2 x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$r_buff1_thd2 [L772] 2 x$r_buff1_thd2 = x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$r_buff1_thd2 [L775] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L777] 2 return 0; [L795] 0 main$tmp_guard0 = __unbuffered_cnt == 2 [L797] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L797] RET 0 assume_abort_if_not(main$tmp_guard0) [L799] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x) [L799] EXPR 0 x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x [L799] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x) [L799] 0 x = x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x) [L800] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used [L800] 0 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used [L801] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$w_buff1_used [L801] 0 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$w_buff1_used [L802] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0 [L802] 0 x$r_buff0_thd0 = x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0 [L803] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$r_buff1_thd0 [L803] 0 x$r_buff1_thd0 = x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$r_buff1_thd0 [L806] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L807] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L808] 0 x$flush_delayed = weak$$choice2 [L809] 0 x$mem_tmp = x [L810] EXPR 0 !x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff1) [L810] 0 x = !x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff1) [L811] EXPR 0 weak$$choice2 ? x$w_buff0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff0)) [L811] 0 x$w_buff0 = weak$$choice2 ? x$w_buff0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff0)) [L812] EXPR 0 weak$$choice2 ? x$w_buff1 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff1 : x$w_buff1)) [L812] 0 x$w_buff1 = weak$$choice2 ? x$w_buff1 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff1 : x$w_buff1)) [L813] EXPR 0 weak$$choice2 ? x$w_buff0_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used)) [L813] 0 x$w_buff0_used = weak$$choice2 ? x$w_buff0_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used)) [L814] EXPR 0 weak$$choice2 ? x$w_buff1_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L814] 0 x$w_buff1_used = weak$$choice2 ? x$w_buff1_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L815] EXPR 0 weak$$choice2 ? x$r_buff0_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff0_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0)) [L815] 0 x$r_buff0_thd0 = weak$$choice2 ? x$r_buff0_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff0_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0)) [L816] EXPR 0 weak$$choice2 ? x$r_buff1_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff1_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L816] 0 x$r_buff1_thd0 = weak$$choice2 ? x$r_buff1_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff1_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L817] 0 main$tmp_guard1 = !(x == 2 && y == 2) [L818] EXPR 0 x$flush_delayed ? x$mem_tmp : x [L818] 0 x = x$flush_delayed ? x$mem_tmp : x [L819] 0 x$flush_delayed = (_Bool)0 [L821] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\old(expression)=1, \old(expression)=0, \result={0:0}, __unbuffered_cnt=2, arg={0:0}, arg={0:0}, expression=1, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=50, weak$$choice2=255, x=2, x$flush_delayed=0, x$mem_tmp=2, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=2] - 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: 791]: 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: 793]: 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 5 procedures, 111 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 19.8s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 17.4s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 98 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 98 mSDsluCounter, 41 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 118 mSDsCounter, 36 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 330 IncrementalHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 36 mSolverCounterUnsat, 20 mSDtfsCounter, 330 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=142occurred in iteration=0, InterpolantAutomatonStates: 34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 65 ConstructedInterpolants, 0 QuantifiedInterpolants, 483 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 01:52:19,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded9055f-bc95-427a-8e2e-eb78610d5823/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