./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix038_power.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b70308-b227-41e0-a01c-c66740c4c137/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b70308-b227-41e0-a01c-c66740c4c137/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b70308-b227-41e0-a01c-c66740c4c137/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b70308-b227-41e0-a01c-c66740c4c137/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix038_power.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b70308-b227-41e0-a01c-c66740c4c137/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b70308-b227-41e0-a01c-c66740c4c137/bin/utaipan-q2qaUkNPG8 --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 e18e9a71245104e8a1f2c68776a66009cfa3f8a9 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 06:55:35,707 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 06:55:35,709 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 06:55:35,774 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 06:55:35,775 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 06:55:35,781 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 06:55:35,784 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 06:55:35,789 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 06:55:35,792 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 06:55:35,801 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 06:55:35,802 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 06:55:35,804 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 06:55:35,805 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 06:55:35,813 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 06:55:35,815 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 06:55:35,822 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 06:55:35,825 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 06:55:35,826 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 06:55:35,829 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 06:55:35,840 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 06:55:35,844 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 06:55:35,846 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 06:55:35,849 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 06:55:35,851 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 06:55:35,855 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 06:55:35,856 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 06:55:35,856 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 06:55:35,859 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 06:55:35,860 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 06:55:35,861 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 06:55:35,863 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 06:55:35,864 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 06:55:35,866 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 06:55:35,868 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 06:55:35,870 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 06:55:35,871 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 06:55:35,872 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 06:55:35,872 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 06:55:35,872 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 06:55:35,874 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 06:55:35,875 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 06:55:35,876 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b70308-b227-41e0-a01c-c66740c4c137/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 06:55:35,936 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 06:55:35,936 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 06:55:35,938 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 06:55:35,938 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 06:55:35,938 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 06:55:35,939 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 06:55:35,939 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 06:55:35,939 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 06:55:35,939 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 06:55:35,940 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 06:55:35,941 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 06:55:35,941 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 06:55:35,942 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 06:55:35,942 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 06:55:35,942 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 06:55:35,943 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 06:55:35,944 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 06:55:35,944 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 06:55:35,944 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 06:55:35,945 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 06:55:35,945 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 06:55:35,945 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 06:55:35,945 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 06:55:35,946 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 06:55:35,946 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 06:55:35,946 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 06:55:35,946 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 06:55:35,947 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 06:55:35,947 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 06:55:35,949 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 06:55:35,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:55:35,950 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 06:55:35,950 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 06:55:35,950 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 06:55:35,951 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 06:55:35,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 06:55:35,951 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 06:55:35,952 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 06:55:35,952 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 06:55:35,952 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_d2b70308-b227-41e0-a01c-c66740c4c137/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b70308-b227-41e0-a01c-c66740c4c137/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e18e9a71245104e8a1f2c68776a66009cfa3f8a9 [2021-10-13 06:55:36,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 06:55:36,337 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 06:55:36,340 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 06:55:36,342 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 06:55:36,344 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 06:55:36,345 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b70308-b227-41e0-a01c-c66740c4c137/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/pthread-wmm/mix038_power.opt.i [2021-10-13 06:55:36,423 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b70308-b227-41e0-a01c-c66740c4c137/bin/utaipan-q2qaUkNPG8/data/848eec8d6/e7fec3a2940a4034814decb9b9de1f8a/FLAGd6b86601a [2021-10-13 06:55:37,161 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 06:55:37,162 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b70308-b227-41e0-a01c-c66740c4c137/sv-benchmarks/c/pthread-wmm/mix038_power.opt.i [2021-10-13 06:55:37,194 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b70308-b227-41e0-a01c-c66740c4c137/bin/utaipan-q2qaUkNPG8/data/848eec8d6/e7fec3a2940a4034814decb9b9de1f8a/FLAGd6b86601a [2021-10-13 06:55:37,368 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b70308-b227-41e0-a01c-c66740c4c137/bin/utaipan-q2qaUkNPG8/data/848eec8d6/e7fec3a2940a4034814decb9b9de1f8a [2021-10-13 06:55:37,371 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 06:55:37,373 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 06:55:37,375 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 06:55:37,375 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 06:55:37,379 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 06:55:37,381 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:55:37" (1/1) ... [2021-10-13 06:55:37,382 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@634983ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:55:37, skipping insertion in model container [2021-10-13 06:55:37,382 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:55:37" (1/1) ... [2021-10-13 06:55:37,391 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 06:55:37,454 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 06:55:37,710 WARN L228 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_d2b70308-b227-41e0-a01c-c66740c4c137/sv-benchmarks/c/pthread-wmm/mix038_power.opt.i[950,963] [2021-10-13 06:55:38,065 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:55:38,081 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 06:55:38,099 WARN L228 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_d2b70308-b227-41e0-a01c-c66740c4c137/sv-benchmarks/c/pthread-wmm/mix038_power.opt.i[950,963] [2021-10-13 06:55:38,195 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:55:38,252 INFO L208 MainTranslator]: Completed translation [2021-10-13 06:55:38,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:55:38 WrapperNode [2021-10-13 06:55:38,253 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 06:55:38,254 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 06:55:38,255 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 06:55:38,255 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 06:55:38,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:55:38" (1/1) ... [2021-10-13 06:55:38,311 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:55:38" (1/1) ... [2021-10-13 06:55:38,360 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 06:55:38,362 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 06:55:38,362 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 06:55:38,363 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 06:55:38,373 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:55:38" (1/1) ... [2021-10-13 06:55:38,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:55:38" (1/1) ... [2021-10-13 06:55:38,391 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:55:38" (1/1) ... [2021-10-13 06:55:38,404 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:55:38" (1/1) ... [2021-10-13 06:55:38,415 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:55:38" (1/1) ... [2021-10-13 06:55:38,432 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:55:38" (1/1) ... [2021-10-13 06:55:38,436 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:55:38" (1/1) ... [2021-10-13 06:55:38,441 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 06:55:38,457 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 06:55:38,457 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 06:55:38,457 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 06:55:38,458 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:55:38" (1/1) ... [2021-10-13 06:55:38,467 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:55:38,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b70308-b227-41e0-a01c-c66740c4c137/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:55:38,502 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b70308-b227-41e0-a01c-c66740c4c137/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 06:55:38,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b70308-b227-41e0-a01c-c66740c4c137/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 06:55:38,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 06:55:38,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-13 06:55:38,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 06:55:38,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 06:55:38,563 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-13 06:55:38,563 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-13 06:55:38,563 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-13 06:55:38,563 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-13 06:55:38,563 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-13 06:55:38,564 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-13 06:55:38,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 06:55:38,564 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-13 06:55:38,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 06:55:38,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 06:55:38,567 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-13 06:55:40,581 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 06:55:40,582 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-13 06:55:40,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:55:40 BoogieIcfgContainer [2021-10-13 06:55:40,585 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 06:55:40,587 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 06:55:40,588 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 06:55:40,591 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 06:55:40,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:55:37" (1/3) ... [2021-10-13 06:55:40,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c5a0c90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:55:40, skipping insertion in model container [2021-10-13 06:55:40,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:55:38" (2/3) ... [2021-10-13 06:55:40,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c5a0c90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:55:40, skipping insertion in model container [2021-10-13 06:55:40,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:55:40" (3/3) ... [2021-10-13 06:55:40,595 INFO L111 eAbstractionObserver]: Analyzing ICFG mix038_power.opt.i [2021-10-13 06:55:40,602 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-13 06:55:40,602 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 06:55:40,603 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-13 06:55:40,603 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-13 06:55:40,686 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,686 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,686 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,687 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,687 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,687 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,687 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,687 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,688 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,688 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,689 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,689 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,690 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,690 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,690 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,691 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,691 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,691 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,692 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,692 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,693 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,694 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,694 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,694 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,695 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,695 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,695 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,696 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,696 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,696 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,696 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,696 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,697 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,697 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,697 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,697 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,697 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,698 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,698 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,698 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,698 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,698 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,699 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,699 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,699 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,700 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,700 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,700 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,700 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,700 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,701 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,701 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,701 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite27| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,701 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,701 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,701 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,702 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,702 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,704 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,704 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,704 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,704 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,705 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,705 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,705 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,705 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,706 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,706 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,706 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,707 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,707 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,707 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,707 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,708 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,708 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,708 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,708 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,708 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,709 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,710 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,713 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,713 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,714 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,715 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,715 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,716 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,716 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,716 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,717 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,724 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,724 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite27| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,725 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,725 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,725 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,725 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,725 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,728 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,728 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,729 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,729 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,730 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,730 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,731 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,731 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,731 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,731 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,732 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,732 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,732 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,733 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,734 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,734 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,734 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,734 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,734 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,734 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,735 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,735 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,735 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,735 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,735 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,735 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,735 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,740 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,740 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,740 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,741 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,741 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,741 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,741 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,742 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,742 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,742 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,743 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,749 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,750 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,750 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,750 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,750 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,751 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite27| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,751 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,751 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,751 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,752 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,752 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,752 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,752 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,753 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,754 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,754 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,754 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,754 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,755 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,756 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,757 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,757 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,757 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,757 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,758 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,758 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,758 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,762 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,762 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,762 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,763 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,763 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,763 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,763 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,763 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,764 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,764 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,764 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,764 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,766 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,767 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,767 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,767 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 06:55:40,768 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-13 06:55:40,825 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 06:55:40,843 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, mConcurrency=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 [2021-10-13 06:55:40,845 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-13 06:55:40,872 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-13 06:55:40,891 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 109 transitions, 233 flow [2021-10-13 06:55:40,895 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 109 transitions, 233 flow [2021-10-13 06:55:40,897 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 117 places, 109 transitions, 233 flow [2021-10-13 06:55:40,951 INFO L129 PetriNetUnfolder]: 2/106 cut-off events. [2021-10-13 06:55:40,951 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-13 06:55:40,960 INFO L84 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 106 events. 2/106 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2021-10-13 06:55:40,965 INFO L116 LiptonReduction]: Number of co-enabled transitions 1796 [2021-10-13 06:55:47,430 INFO L131 LiptonReduction]: Checked pairs total: 3969 [2021-10-13 06:55:47,430 INFO L133 LiptonReduction]: Total number of compositions: 94 [2021-10-13 06:55:47,439 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 27 transitions, 69 flow [2021-10-13 06:55:47,528 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 634 states, 631 states have (on average 3.283676703645008) internal successors, (2072), 633 states have internal predecessors, (2072), 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) [2021-10-13 06:55:47,533 INFO L276 IsEmpty]: Start isEmpty. Operand has 634 states, 631 states have (on average 3.283676703645008) internal successors, (2072), 633 states have internal predecessors, (2072), 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) [2021-10-13 06:55:47,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 06:55:47,540 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:55:47,541 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:55:47,542 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-13 06:55:47,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:55:47,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1026352792, now seen corresponding path program 1 times [2021-10-13 06:55:47,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:55:47,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228659581] [2021-10-13 06:55:47,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:55:47,565 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:55:47,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:55:48,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:55:48,032 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:55:48,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228659581] [2021-10-13 06:55:48,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228659581] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:55:48,038 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:55:48,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 06:55:48,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620860360] [2021-10-13 06:55:48,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:55:48,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:55:48,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:55:48,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:55:48,073 INFO L87 Difference]: Start difference. First operand has 634 states, 631 states have (on average 3.283676703645008) internal successors, (2072), 633 states have internal predecessors, (2072), 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 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) [2021-10-13 06:55:48,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:55:48,177 INFO L93 Difference]: Finished difference Result 538 states and 1640 transitions. [2021-10-13 06:55:48,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:55:48,179 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 [2021-10-13 06:55:48,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:55:48,211 INFO L225 Difference]: With dead ends: 538 [2021-10-13 06:55:48,211 INFO L226 Difference]: Without dead ends: 522 [2021-10-13 06:55:48,214 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:55:48,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2021-10-13 06:55:48,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 522. [2021-10-13 06:55:48,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 521 states have (on average 3.071017274472169) internal successors, (1600), 521 states have internal predecessors, (1600), 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) [2021-10-13 06:55:48,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 1600 transitions. [2021-10-13 06:55:48,322 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 1600 transitions. Word has length 7 [2021-10-13 06:55:48,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:55:48,323 INFO L470 AbstractCegarLoop]: Abstraction has 522 states and 1600 transitions. [2021-10-13 06:55:48,324 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) [2021-10-13 06:55:48,324 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 1600 transitions. [2021-10-13 06:55:48,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 06:55:48,326 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:55:48,327 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:55:48,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 06:55:48,327 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-13 06:55:48,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:55:48,328 INFO L82 PathProgramCache]: Analyzing trace with hash 206014901, now seen corresponding path program 1 times [2021-10-13 06:55:48,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:55:48,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155426356] [2021-10-13 06:55:48,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:55:48,329 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:55:48,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:55:48,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:55:48,530 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:55:48,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155426356] [2021-10-13 06:55:48,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155426356] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:55:48,531 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:55:48,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 06:55:48,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805705160] [2021-10-13 06:55:48,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 06:55:48,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:55:48,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 06:55:48,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 06:55:48,548 INFO L87 Difference]: Start difference. First operand 522 states and 1600 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) 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) [2021-10-13 06:55:48,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:55:48,658 INFO L93 Difference]: Finished difference Result 878 states and 2514 transitions. [2021-10-13 06:55:48,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 06:55:48,659 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) 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 [2021-10-13 06:55:48,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:55:48,669 INFO L225 Difference]: With dead ends: 878 [2021-10-13 06:55:48,669 INFO L226 Difference]: Without dead ends: 702 [2021-10-13 06:55:48,670 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 06:55:48,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2021-10-13 06:55:48,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 614. [2021-10-13 06:55:48,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 613 states have (on average 2.972267536704731) internal successors, (1822), 613 states have internal predecessors, (1822), 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) [2021-10-13 06:55:48,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 1822 transitions. [2021-10-13 06:55:48,722 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 1822 transitions. Word has length 10 [2021-10-13 06:55:48,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:55:48,722 INFO L470 AbstractCegarLoop]: Abstraction has 614 states and 1822 transitions. [2021-10-13 06:55:48,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) 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) [2021-10-13 06:55:48,723 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 1822 transitions. [2021-10-13 06:55:48,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 06:55:48,733 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:55:48,733 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:55:48,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 06:55:48,734 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-13 06:55:48,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:55:48,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1470323937, now seen corresponding path program 1 times [2021-10-13 06:55:48,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:55:48,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788411311] [2021-10-13 06:55:48,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:55:48,737 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:55:48,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:55:48,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:55:48,896 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:55:48,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788411311] [2021-10-13 06:55:48,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788411311] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:55:48,896 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:55:48,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 06:55:48,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882420401] [2021-10-13 06:55:48,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 06:55:48,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:55:48,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 06:55:48,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 06:55:48,899 INFO L87 Difference]: Start difference. First operand 614 states and 1822 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) 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) [2021-10-13 06:55:48,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:55:48,924 INFO L93 Difference]: Finished difference Result 638 states and 1844 transitions. [2021-10-13 06:55:48,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 06:55:48,925 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) 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 [2021-10-13 06:55:48,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:55:48,931 INFO L225 Difference]: With dead ends: 638 [2021-10-13 06:55:48,932 INFO L226 Difference]: Without dead ends: 566 [2021-10-13 06:55:48,932 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 06:55:48,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2021-10-13 06:55:48,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 518. [2021-10-13 06:55:48,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 517 states have (on average 2.9593810444874276) internal successors, (1530), 517 states have internal predecessors, (1530), 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) [2021-10-13 06:55:48,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 1530 transitions. [2021-10-13 06:55:48,958 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 1530 transitions. Word has length 11 [2021-10-13 06:55:48,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:55:48,958 INFO L470 AbstractCegarLoop]: Abstraction has 518 states and 1530 transitions. [2021-10-13 06:55:48,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) 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) [2021-10-13 06:55:48,959 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 1530 transitions. [2021-10-13 06:55:48,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 06:55:48,960 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:55:48,960 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:55:48,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 06:55:48,961 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-13 06:55:48,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:55:48,962 INFO L82 PathProgramCache]: Analyzing trace with hash -898138243, now seen corresponding path program 1 times [2021-10-13 06:55:48,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:55:48,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158461958] [2021-10-13 06:55:48,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:55:48,963 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:55:48,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:55:49,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:55:49,084 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:55:49,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158461958] [2021-10-13 06:55:49,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158461958] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:55:49,086 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:55:49,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 06:55:49,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854931467] [2021-10-13 06:55:49,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 06:55:49,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:55:49,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 06:55:49,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 06:55:49,088 INFO L87 Difference]: Start difference. First operand 518 states and 1530 transitions. Second operand has 5 states, 4 states have (on average 3.0) 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) [2021-10-13 06:55:49,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:55:49,175 INFO L93 Difference]: Finished difference Result 692 states and 1925 transitions. [2021-10-13 06:55:49,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 06:55:49,176 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) 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 [2021-10-13 06:55:49,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:55:49,182 INFO L225 Difference]: With dead ends: 692 [2021-10-13 06:55:49,182 INFO L226 Difference]: Without dead ends: 598 [2021-10-13 06:55:49,183 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 32.2ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-13 06:55:49,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-10-13 06:55:49,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 502. [2021-10-13 06:55:49,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 501 states have (on average 2.934131736526946) internal successors, (1470), 501 states have internal predecessors, (1470), 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) [2021-10-13 06:55:49,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 1470 transitions. [2021-10-13 06:55:49,208 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 1470 transitions. Word has length 12 [2021-10-13 06:55:49,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:55:49,209 INFO L470 AbstractCegarLoop]: Abstraction has 502 states and 1470 transitions. [2021-10-13 06:55:49,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) 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) [2021-10-13 06:55:49,209 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 1470 transitions. [2021-10-13 06:55:49,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 06:55:49,211 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:55:49,211 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:55:49,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 06:55:49,212 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-13 06:55:49,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:55:49,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1247025561, now seen corresponding path program 1 times [2021-10-13 06:55:49,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:55:49,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530492562] [2021-10-13 06:55:49,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:55:49,214 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:55:49,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:55:49,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:55:49,342 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:55:49,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530492562] [2021-10-13 06:55:49,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530492562] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:55:49,343 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:55:49,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 06:55:49,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989652119] [2021-10-13 06:55:49,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 06:55:49,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:55:49,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 06:55:49,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 06:55:49,345 INFO L87 Difference]: Start difference. First operand 502 states and 1470 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:55:49,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:55:49,393 INFO L93 Difference]: Finished difference Result 472 states and 1204 transitions. [2021-10-13 06:55:49,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 06:55:49,394 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-13 06:55:49,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:55:49,398 INFO L225 Difference]: With dead ends: 472 [2021-10-13 06:55:49,398 INFO L226 Difference]: Without dead ends: 356 [2021-10-13 06:55:49,398 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 06:55:49,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2021-10-13 06:55:49,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2021-10-13 06:55:49,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 355 states have (on average 2.507042253521127) internal successors, (890), 355 states have internal predecessors, (890), 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) [2021-10-13 06:55:49,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 890 transitions. [2021-10-13 06:55:49,415 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 890 transitions. Word has length 13 [2021-10-13 06:55:49,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:55:49,415 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 890 transitions. [2021-10-13 06:55:49,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:55:49,416 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 890 transitions. [2021-10-13 06:55:49,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 06:55:49,417 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:55:49,417 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:55:49,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 06:55:49,418 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-13 06:55:49,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:55:49,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1303177409, now seen corresponding path program 1 times [2021-10-13 06:55:49,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:55:49,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741248689] [2021-10-13 06:55:49,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:55:49,419 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:55:49,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:55:49,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:55:49,501 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:55:49,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741248689] [2021-10-13 06:55:49,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741248689] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:55:49,510 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:55:49,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 06:55:49,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546011523] [2021-10-13 06:55:49,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 06:55:49,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:55:49,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 06:55:49,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 06:55:49,512 INFO L87 Difference]: Start difference. First operand 356 states and 890 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:55:49,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:55:49,541 INFO L93 Difference]: Finished difference Result 508 states and 1222 transitions. [2021-10-13 06:55:49,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 06:55:49,542 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-13 06:55:49,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:55:49,545 INFO L225 Difference]: With dead ends: 508 [2021-10-13 06:55:49,545 INFO L226 Difference]: Without dead ends: 342 [2021-10-13 06:55:49,546 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 06:55:49,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2021-10-13 06:55:49,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 300. [2021-10-13 06:55:49,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 299 states have (on average 2.408026755852843) internal successors, (720), 299 states have internal predecessors, (720), 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) [2021-10-13 06:55:49,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 720 transitions. [2021-10-13 06:55:49,560 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 720 transitions. Word has length 15 [2021-10-13 06:55:49,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:55:49,560 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 720 transitions. [2021-10-13 06:55:49,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:55:49,561 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 720 transitions. [2021-10-13 06:55:49,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 06:55:49,562 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:55:49,562 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:55:49,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 06:55:49,563 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-13 06:55:49,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:55:49,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1630846664, now seen corresponding path program 1 times [2021-10-13 06:55:49,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:55:49,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587618562] [2021-10-13 06:55:49,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:55:49,564 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:55:49,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:55:49,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:55:49,745 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:55:49,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587618562] [2021-10-13 06:55:49,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587618562] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:55:49,746 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:55:49,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 06:55:49,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902055701] [2021-10-13 06:55:49,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 06:55:49,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:55:49,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 06:55:49,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 06:55:49,748 INFO L87 Difference]: Start difference. First operand 300 states and 720 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:55:49,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:55:49,792 INFO L93 Difference]: Finished difference Result 231 states and 494 transitions. [2021-10-13 06:55:49,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 06:55:49,796 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-13 06:55:49,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:55:49,799 INFO L225 Difference]: With dead ends: 231 [2021-10-13 06:55:49,799 INFO L226 Difference]: Without dead ends: 180 [2021-10-13 06:55:49,800 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 20.8ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 06:55:49,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-10-13 06:55:49,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2021-10-13 06:55:49,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 2.089385474860335) internal successors, (374), 179 states have internal predecessors, (374), 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) [2021-10-13 06:55:49,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 374 transitions. [2021-10-13 06:55:49,808 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 374 transitions. Word has length 15 [2021-10-13 06:55:49,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:55:49,808 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 374 transitions. [2021-10-13 06:55:49,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:55:49,809 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 374 transitions. [2021-10-13 06:55:49,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 06:55:49,810 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:55:49,810 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:55:49,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-13 06:55:49,810 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-13 06:55:49,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:55:49,811 INFO L82 PathProgramCache]: Analyzing trace with hash 705460790, now seen corresponding path program 1 times [2021-10-13 06:55:49,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:55:49,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882904059] [2021-10-13 06:55:49,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:55:49,812 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:55:49,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:55:50,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:55:50,012 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:55:50,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882904059] [2021-10-13 06:55:50,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882904059] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:55:50,012 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:55:50,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 06:55:50,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980999280] [2021-10-13 06:55:50,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 06:55:50,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:55:50,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 06:55:50,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 06:55:50,014 INFO L87 Difference]: Start difference. First operand 180 states and 374 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 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) [2021-10-13 06:55:50,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:55:50,062 INFO L93 Difference]: Finished difference Result 154 states and 321 transitions. [2021-10-13 06:55:50,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 06:55:50,063 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 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 18 [2021-10-13 06:55:50,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:55:50,064 INFO L225 Difference]: With dead ends: 154 [2021-10-13 06:55:50,064 INFO L226 Difference]: Without dead ends: 94 [2021-10-13 06:55:50,064 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 27.5ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-13 06:55:50,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-10-13 06:55:50,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2021-10-13 06:55:50,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 2.0) internal successors, (186), 93 states have internal predecessors, (186), 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) [2021-10-13 06:55:50,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 186 transitions. [2021-10-13 06:55:50,069 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 186 transitions. Word has length 18 [2021-10-13 06:55:50,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:55:50,069 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 186 transitions. [2021-10-13 06:55:50,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 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) [2021-10-13 06:55:50,070 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 186 transitions. [2021-10-13 06:55:50,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 06:55:50,070 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:55:50,070 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:55:50,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-13 06:55:50,071 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-13 06:55:50,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:55:50,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1994558433, now seen corresponding path program 1 times [2021-10-13 06:55:50,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:55:50,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482289022] [2021-10-13 06:55:50,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:55:50,072 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:55:50,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:55:50,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:55:50,274 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:55:50,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482289022] [2021-10-13 06:55:50,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482289022] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:55:50,275 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:55:50,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 06:55:50,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782615753] [2021-10-13 06:55:50,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 06:55:50,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:55:50,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 06:55:50,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 06:55:50,277 INFO L87 Difference]: Start difference. First operand 94 states and 186 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 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) [2021-10-13 06:55:50,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:55:50,452 INFO L93 Difference]: Finished difference Result 144 states and 285 transitions. [2021-10-13 06:55:50,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 06:55:50,453 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 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 21 [2021-10-13 06:55:50,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:55:50,454 INFO L225 Difference]: With dead ends: 144 [2021-10-13 06:55:50,454 INFO L226 Difference]: Without dead ends: 97 [2021-10-13 06:55:50,455 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 84.8ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-13 06:55:50,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-10-13 06:55:50,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 74. [2021-10-13 06:55:50,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.8630136986301369) internal successors, (136), 73 states have internal predecessors, (136), 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) [2021-10-13 06:55:50,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 136 transitions. [2021-10-13 06:55:50,459 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 136 transitions. Word has length 21 [2021-10-13 06:55:50,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:55:50,460 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 136 transitions. [2021-10-13 06:55:50,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 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) [2021-10-13 06:55:50,460 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 136 transitions. [2021-10-13 06:55:50,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 06:55:50,461 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:55:50,461 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:55:50,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-13 06:55:50,462 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-13 06:55:50,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:55:50,462 INFO L82 PathProgramCache]: Analyzing trace with hash -692049035, now seen corresponding path program 2 times [2021-10-13 06:55:50,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:55:50,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573551661] [2021-10-13 06:55:50,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:55:50,463 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:55:50,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:55:50,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:55:50,670 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:55:50,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573551661] [2021-10-13 06:55:50,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573551661] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:55:50,671 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:55:50,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 06:55:50,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843524638] [2021-10-13 06:55:50,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 06:55:50,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:55:50,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 06:55:50,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 06:55:50,673 INFO L87 Difference]: Start difference. First operand 74 states and 136 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 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) [2021-10-13 06:55:50,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:55:50,824 INFO L93 Difference]: Finished difference Result 140 states and 256 transitions. [2021-10-13 06:55:50,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 06:55:50,825 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 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 21 [2021-10-13 06:55:50,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:55:50,826 INFO L225 Difference]: With dead ends: 140 [2021-10-13 06:55:50,826 INFO L226 Difference]: Without dead ends: 43 [2021-10-13 06:55:50,826 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 90.3ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-10-13 06:55:50,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-13 06:55:50,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-10-13 06:55:50,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.6428571428571428) internal successors, (69), 42 states have internal predecessors, (69), 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) [2021-10-13 06:55:50,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 69 transitions. [2021-10-13 06:55:50,829 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 69 transitions. Word has length 21 [2021-10-13 06:55:50,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:55:50,830 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 69 transitions. [2021-10-13 06:55:50,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 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) [2021-10-13 06:55:50,830 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 69 transitions. [2021-10-13 06:55:50,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 06:55:50,831 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:55:50,831 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:55:50,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-13 06:55:50,831 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-13 06:55:50,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:55:50,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1979811057, now seen corresponding path program 3 times [2021-10-13 06:55:50,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:55:50,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752300443] [2021-10-13 06:55:50,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:55:50,833 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:55:50,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:55:51,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:55:51,095 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:55:51,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752300443] [2021-10-13 06:55:51,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752300443] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:55:51,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:55:51,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 06:55:51,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396023577] [2021-10-13 06:55:51,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 06:55:51,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:55:51,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 06:55:51,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 06:55:51,098 INFO L87 Difference]: Start difference. First operand 43 states and 69 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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) [2021-10-13 06:55:51,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:55:51,247 INFO L93 Difference]: Finished difference Result 54 states and 84 transitions. [2021-10-13 06:55:51,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 06:55:51,248 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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 21 [2021-10-13 06:55:51,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:55:51,249 INFO L225 Difference]: With dead ends: 54 [2021-10-13 06:55:51,249 INFO L226 Difference]: Without dead ends: 31 [2021-10-13 06:55:51,249 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 111.4ms TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-10-13 06:55:51,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-10-13 06:55:51,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-10-13 06:55:51,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 30 states have internal predecessors, (41), 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) [2021-10-13 06:55:51,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2021-10-13 06:55:51,251 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 41 transitions. Word has length 21 [2021-10-13 06:55:51,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:55:51,251 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 41 transitions. [2021-10-13 06:55:51,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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) [2021-10-13 06:55:51,252 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 41 transitions. [2021-10-13 06:55:51,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 06:55:51,252 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:55:51,252 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:55:51,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-13 06:55:51,253 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-10-13 06:55:51,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:55:51,253 INFO L82 PathProgramCache]: Analyzing trace with hash -624071301, now seen corresponding path program 4 times [2021-10-13 06:55:51,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:55:51,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312123762] [2021-10-13 06:55:51,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:55:51,254 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:55:51,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 06:55:51,311 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 06:55:51,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 06:55:51,461 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-13 06:55:51,461 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 06:55:51,462 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 06:55:51,464 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 06:55:51,464 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 06:55:51,464 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-13 06:55:51,465 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-13 06:55:51,465 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 06:55:51,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-13 06:55:51,473 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-13 06:55:51,473 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 06:55:51,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 06:55:51 BasicIcfg [2021-10-13 06:55:51,641 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 06:55:51,642 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 06:55:51,642 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 06:55:51,642 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 06:55:51,643 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:55:40" (3/4) ... [2021-10-13 06:55:51,645 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 06:55:51,794 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b70308-b227-41e0-a01c-c66740c4c137/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 06:55:51,794 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 06:55:51,796 INFO L168 Benchmark]: Toolchain (without parser) took 14421.46 ms. Allocated memory was 94.4 MB in the beginning and 209.7 MB in the end (delta: 115.3 MB). Free memory was 56.0 MB in the beginning and 68.7 MB in the end (delta: -12.7 MB). Peak memory consumption was 101.8 MB. Max. memory is 16.1 GB. [2021-10-13 06:55:51,796 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 94.4 MB. Free memory is still 74.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:55:51,797 INFO L168 Benchmark]: CACSL2BoogieTranslator took 878.67 ms. Allocated memory is still 94.4 MB. Free memory was 55.8 MB in the beginning and 58.2 MB in the end (delta: -2.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 06:55:51,798 INFO L168 Benchmark]: Boogie Procedure Inliner took 106.26 ms. Allocated memory is still 94.4 MB. Free memory was 58.2 MB in the beginning and 55.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 06:55:51,798 INFO L168 Benchmark]: Boogie Preprocessor took 94.22 ms. Allocated memory is still 94.4 MB. Free memory was 55.6 MB in the beginning and 53.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 06:55:51,799 INFO L168 Benchmark]: RCFGBuilder took 2128.82 ms. Allocated memory was 94.4 MB in the beginning and 125.8 MB in the end (delta: 31.5 MB). Free memory was 53.5 MB in the beginning and 61.6 MB in the end (delta: -8.0 MB). Peak memory consumption was 26.3 MB. Max. memory is 16.1 GB. [2021-10-13 06:55:51,799 INFO L168 Benchmark]: TraceAbstraction took 11053.67 ms. Allocated memory was 125.8 MB in the beginning and 209.7 MB in the end (delta: 83.9 MB). Free memory was 61.0 MB in the beginning and 84.4 MB in the end (delta: -23.4 MB). Peak memory consumption was 60.6 MB. Max. memory is 16.1 GB. [2021-10-13 06:55:51,800 INFO L168 Benchmark]: Witness Printer took 151.85 ms. Allocated memory is still 209.7 MB. Free memory was 84.4 MB in the beginning and 68.7 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-13 06:55:51,802 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 94.4 MB. Free memory is still 74.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 878.67 ms. Allocated memory is still 94.4 MB. Free memory was 55.8 MB in the beginning and 58.2 MB in the end (delta: -2.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 106.26 ms. Allocated memory is still 94.4 MB. Free memory was 58.2 MB in the beginning and 55.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 94.22 ms. Allocated memory is still 94.4 MB. Free memory was 55.6 MB in the beginning and 53.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2128.82 ms. Allocated memory was 94.4 MB in the beginning and 125.8 MB in the end (delta: 31.5 MB). Free memory was 53.5 MB in the beginning and 61.6 MB in the end (delta: -8.0 MB). Peak memory consumption was 26.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11053.67 ms. Allocated memory was 125.8 MB in the beginning and 209.7 MB in the end (delta: 83.9 MB). Free memory was 61.0 MB in the beginning and 84.4 MB in the end (delta: -23.4 MB). Peak memory consumption was 60.6 MB. Max. memory is 16.1 GB. * Witness Printer took 151.85 ms. Allocated memory is still 209.7 MB. Free memory was 84.4 MB in the beginning and 68.7 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6534.9ms, 117 PlacesBefore, 36 PlacesAfterwards, 109 TransitionsBefore, 27 TransitionsAfterwards, 1796 CoEnabledTransitionPairs, 6 FixpointIterations, 40 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 1 ChoiceCompositions, 94 TotalNumberOfCompositions, 3969 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2005, positive: 1873, positive conditional: 0, positive unconditional: 1873, negative: 132, negative conditional: 0, negative unconditional: 132, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1184, positive: 1148, positive conditional: 0, positive unconditional: 1148, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1184, positive: 1134, positive conditional: 0, positive unconditional: 1134, negative: 50, negative conditional: 0, negative unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 50, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 296, positive: 48, positive conditional: 0, positive unconditional: 48, negative: 248, negative conditional: 0, negative unconditional: 248, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2005, positive: 725, positive conditional: 0, positive unconditional: 725, negative: 96, negative conditional: 0, negative unconditional: 96, unknown: 1184, unknown conditional: 0, unknown unconditional: 1184] , Statistics on independence cache: Total cache size (in pairs): 108, Positive cache size: 93, Positive conditional cache size: 0, Positive unconditional cache size: 93, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms 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: [L709] 0 int __unbuffered_cnt = 0; [L711] 0 int __unbuffered_p1_EAX = 0; [L713] 0 int __unbuffered_p2_EAX = 0; [L715] 0 int __unbuffered_p2_EBX = 0; [L717] 0 int a = 0; [L718] 0 _Bool main$tmp_guard0; [L719] 0 _Bool main$tmp_guard1; [L721] 0 int x = 0; [L723] 0 int y = 0; [L724] 0 _Bool y$flush_delayed; [L725] 0 int y$mem_tmp; [L726] 0 _Bool y$r_buff0_thd0; [L727] 0 _Bool y$r_buff0_thd1; [L728] 0 _Bool y$r_buff0_thd2; [L729] 0 _Bool y$r_buff0_thd3; [L730] 0 _Bool y$r_buff1_thd0; [L731] 0 _Bool y$r_buff1_thd1; [L732] 0 _Bool y$r_buff1_thd2; [L733] 0 _Bool y$r_buff1_thd3; [L734] 0 _Bool y$read_delayed; [L735] 0 int *y$read_delayed_var; [L736] 0 int y$w_buff0; [L737] 0 _Bool y$w_buff0_used; [L738] 0 int y$w_buff1; [L739] 0 _Bool y$w_buff1_used; [L741] 0 int z = 0; [L742] 0 _Bool weak$$choice0; [L743] 0 _Bool weak$$choice2; [L833] 0 pthread_t t1004; [L834] FCALL, FORK 0 pthread_create(&t1004, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L835] 0 pthread_t t1005; [L836] FCALL, FORK 0 pthread_create(&t1005, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L837] 0 pthread_t t1006; [L838] FCALL, FORK 0 pthread_create(&t1006, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L790] 3 y$w_buff1 = y$w_buff0 [L791] 3 y$w_buff0 = 1 [L792] 3 y$w_buff1_used = y$w_buff0_used [L793] 3 y$w_buff0_used = (_Bool)1 [L18] COND FALSE 3 !(!expression) [L795] 3 y$r_buff1_thd0 = y$r_buff0_thd0 [L796] 3 y$r_buff1_thd1 = y$r_buff0_thd1 [L797] 3 y$r_buff1_thd2 = y$r_buff0_thd2 [L798] 3 y$r_buff1_thd3 = y$r_buff0_thd3 [L799] 3 y$r_buff0_thd3 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=0] [L802] 3 z = 1 [L805] 3 __unbuffered_p2_EAX = z VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L808] 3 __unbuffered_p2_EBX = a VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L747] 1 a = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L750] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L755] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L757] 1 return 0; [L762] 2 x = 2 VAL [\result={0:0}, __unbuffered_cnt=1, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L765] 2 weak$$choice0 = __VERIFIER_nondet_bool() [L766] 2 weak$$choice2 = __VERIFIER_nondet_bool() [L767] 2 y$flush_delayed = weak$$choice2 [L768] 2 y$mem_tmp = y [L769] EXPR 2 !y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y : (y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : y$w_buff1) [L769] 2 y = !y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y : (y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : y$w_buff1) [L770] EXPR 2 weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : y$w_buff0)) [L770] EXPR 2 !y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : y$w_buff0) [L770] EXPR 2 weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : y$w_buff0)) [L770] 2 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : y$w_buff0)) [L771] EXPR 2 weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff1 : y$w_buff1)) [L771] EXPR 2 !y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff1 : y$w_buff1) [L771] EXPR 2 weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff1 : y$w_buff1)) [L771] 2 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff1 : y$w_buff1)) [L772] EXPR 2 weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used)) [L772] EXPR 2 !y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used) [L772] EXPR 2 weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used)) [L772] 2 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used)) [L773] EXPR 2 weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : (_Bool)0)) [L773] EXPR 2 !y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : (_Bool)0) [L773] EXPR 2 weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : (_Bool)0)) [L773] 2 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : (_Bool)0)) [L774] EXPR 2 weak$$choice2 ? y$r_buff0_thd2 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$r_buff0_thd2 : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2)) [L774] EXPR 2 !y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$r_buff0_thd2 : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2) [L774] EXPR 2 weak$$choice2 ? y$r_buff0_thd2 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$r_buff0_thd2 : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2)) [L774] 2 y$r_buff0_thd2 = weak$$choice2 ? y$r_buff0_thd2 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$r_buff0_thd2 : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2)) [L775] EXPR 2 weak$$choice2 ? y$r_buff1_thd2 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$r_buff1_thd2 : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : (_Bool)0)) [L775] EXPR 2 !y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$r_buff1_thd2 : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : (_Bool)0) [L775] EXPR 2 weak$$choice2 ? y$r_buff1_thd2 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$r_buff1_thd2 : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : (_Bool)0)) [L775] 2 y$r_buff1_thd2 = weak$$choice2 ? y$r_buff1_thd2 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$r_buff1_thd2 : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : (_Bool)0)) [L776] 2 __unbuffered_p1_EAX = y [L777] EXPR 2 y$flush_delayed ? y$mem_tmp : y [L777] 2 y = y$flush_delayed ? y$mem_tmp : y [L778] 2 y$flush_delayed = (_Bool)0 VAL [\result={0:0}, __unbuffered_cnt=1, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=50, weak$$choice2=0, x=2, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L811] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd3 ? y$w_buff1 : y) [L811] 3 y = y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd3 ? y$w_buff1 : y) [L812] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used [L812] 3 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used [L813] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$w_buff1_used [L813] 3 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$w_buff1_used [L814] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3 [L814] 3 y$r_buff0_thd3 = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3 [L815] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$r_buff1_thd3 [L815] 3 y$r_buff1_thd3 = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$r_buff1_thd3 [L818] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L820] 3 return 0; [L783] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L785] 2 return 0; [L840] 0 main$tmp_guard0 = __unbuffered_cnt == 3 [L3] COND FALSE 0 !(!cond) [L844] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L844] EXPR 0 y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y [L844] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L844] 0 y = y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L845] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L845] 0 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L846] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L846] 0 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L847] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L847] 0 y$r_buff0_thd0 = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L848] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 [L848] 0 y$r_buff1_thd0 = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 [L851] 0 main$tmp_guard1 = !(x == 2 && __unbuffered_p1_EAX == 0 && __unbuffered_p2_EAX == 1 && __unbuffered_p2_EBX == 0) [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\result={0:0}, \result={0:0}, __unbuffered_cnt=3, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=50, weak$$choice2=0, x=2, y=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=1] - 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: 836]: 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: 834]: 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: 838]: 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 7 procedures, 136 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 10645.8ms, OverallIterations: 12, TraceHistogramMax: 1, EmptinessCheckTime: 33.7ms, AutomataDifference: 1110.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6683.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 331 SDtfs, 377 SDslu, 644 SDs, 0 SdLazy, 258 SolverSat, 58 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 439.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 433.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=634occurred in iteration=0, InterpolantAutomatonStates: 70, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 243.9ms AutomataMinimizationTime, 11 MinimizatonAttempts, 297 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 80.4ms SsaConstructionTime, 671.4ms SatisfiabilityAnalysisTime, 1300.5ms InterpolantComputationTime, 185 NumberOfCodeBlocks, 185 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 153 ConstructedInterpolants, 0 QuantifiedInterpolants, 926 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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! [2021-10-13 06:55:51,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b70308-b227-41e0-a01c-c66740c4c137/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...