./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe029_power.opt_pso.opt_rmo.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd6a5a0-c62c-4fbf-baf7-d9661c5bace8/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd6a5a0-c62c-4fbf-baf7-d9661c5bace8/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd6a5a0-c62c-4fbf-baf7-d9661c5bace8/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd6a5a0-c62c-4fbf-baf7-d9661c5bace8/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe029_power.opt_pso.opt_rmo.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd6a5a0-c62c-4fbf-baf7-d9661c5bace8/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd6a5a0-c62c-4fbf-baf7-d9661c5bace8/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9df54eb091d78e0f82ec179542e5b1e4fed45243a056538ca557e474796bb018 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 17:50:48,960 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 17:50:48,963 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 17:50:49,022 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 17:50:49,023 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 17:50:49,028 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 17:50:49,030 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 17:50:49,033 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 17:50:49,036 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 17:50:49,041 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 17:50:49,042 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 17:50:49,044 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 17:50:49,044 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 17:50:49,046 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 17:50:49,048 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 17:50:49,052 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 17:50:49,054 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 17:50:49,055 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 17:50:49,057 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 17:50:49,064 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 17:50:49,066 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 17:50:49,067 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 17:50:49,070 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 17:50:49,071 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 17:50:49,080 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 17:50:49,080 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 17:50:49,081 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 17:50:49,082 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 17:50:49,083 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 17:50:49,084 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 17:50:49,085 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 17:50:49,086 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 17:50:49,088 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 17:50:49,089 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 17:50:49,090 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 17:50:49,090 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 17:50:49,091 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 17:50:49,091 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 17:50:49,091 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 17:50:49,092 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 17:50:49,093 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 17:50:49,094 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd6a5a0-c62c-4fbf-baf7-d9661c5bace8/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 17:50:49,137 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 17:50:49,137 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 17:50:49,137 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 17:50:49,138 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 17:50:49,138 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 17:50:49,139 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 17:50:49,139 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 17:50:49,139 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 17:50:49,139 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 17:50:49,139 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 17:50:49,140 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 17:50:49,141 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 17:50:49,141 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 17:50:49,141 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 17:50:49,141 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 17:50:49,141 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 17:50:49,141 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 17:50:49,142 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 17:50:49,143 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 17:50:49,143 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 17:50:49,143 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 17:50:49,143 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 17:50:49,144 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 17:50:49,144 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 17:50:49,144 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 17:50:49,144 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 17:50:49,145 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 17:50:49,146 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 17:50:49,146 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 17:50:49,146 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 17:50:49,146 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 17:50:49,147 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 17:50:49,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:50:49,147 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 17:50:49,147 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 17:50:49,147 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 17:50:49,148 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 17:50:49,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 17:50:49,148 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 17:50:49,148 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 17:50:49,148 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 17:50:49,148 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_fbd6a5a0-c62c-4fbf-baf7-d9661c5bace8/bin/utaipan-eEHZpOm5b7/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd6a5a0-c62c-4fbf-baf7-d9661c5bace8/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9df54eb091d78e0f82ec179542e5b1e4fed45243a056538ca557e474796bb018 [2021-11-25 17:50:49,439 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 17:50:49,462 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 17:50:49,464 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 17:50:49,466 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 17:50:49,466 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 17:50:49,468 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd6a5a0-c62c-4fbf-baf7-d9661c5bace8/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/pthread-wmm/safe029_power.opt_pso.opt_rmo.opt.i [2021-11-25 17:50:49,535 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd6a5a0-c62c-4fbf-baf7-d9661c5bace8/bin/utaipan-eEHZpOm5b7/data/c3aa03675/ab9eef96c59e4a3ab7f8bc1084859709/FLAG6aa6fac4f [2021-11-25 17:50:50,194 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 17:50:50,194 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd6a5a0-c62c-4fbf-baf7-d9661c5bace8/sv-benchmarks/c/pthread-wmm/safe029_power.opt_pso.opt_rmo.opt.i [2021-11-25 17:50:50,208 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd6a5a0-c62c-4fbf-baf7-d9661c5bace8/bin/utaipan-eEHZpOm5b7/data/c3aa03675/ab9eef96c59e4a3ab7f8bc1084859709/FLAG6aa6fac4f [2021-11-25 17:50:50,466 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd6a5a0-c62c-4fbf-baf7-d9661c5bace8/bin/utaipan-eEHZpOm5b7/data/c3aa03675/ab9eef96c59e4a3ab7f8bc1084859709 [2021-11-25 17:50:50,469 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 17:50:50,471 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 17:50:50,473 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 17:50:50,473 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 17:50:50,482 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 17:50:50,483 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:50:50" (1/1) ... [2021-11-25 17:50:50,485 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3643fe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:50, skipping insertion in model container [2021-11-25 17:50:50,485 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:50:50" (1/1) ... [2021-11-25 17:50:50,505 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 17:50:50,579 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 17:50:50,802 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd6a5a0-c62c-4fbf-baf7-d9661c5bace8/sv-benchmarks/c/pthread-wmm/safe029_power.opt_pso.opt_rmo.opt.i[967,980] [2021-11-25 17:50:51,006 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:50:51,017 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 17:50:51,034 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd6a5a0-c62c-4fbf-baf7-d9661c5bace8/sv-benchmarks/c/pthread-wmm/safe029_power.opt_pso.opt_rmo.opt.i[967,980] [2021-11-25 17:50:51,122 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:50:51,178 INFO L208 MainTranslator]: Completed translation [2021-11-25 17:50:51,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:51 WrapperNode [2021-11-25 17:50:51,179 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 17:50:51,180 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 17:50:51,180 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 17:50:51,181 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 17:50:51,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:51" (1/1) ... [2021-11-25 17:50:51,224 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:51" (1/1) ... [2021-11-25 17:50:51,279 INFO L137 Inliner]: procedures = 175, calls = 41, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 258 [2021-11-25 17:50:51,282 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 17:50:51,283 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 17:50:51,283 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 17:50:51,283 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 17:50:51,291 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:51" (1/1) ... [2021-11-25 17:50:51,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:51" (1/1) ... [2021-11-25 17:50:51,296 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:51" (1/1) ... [2021-11-25 17:50:51,296 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:51" (1/1) ... [2021-11-25 17:50:51,306 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:51" (1/1) ... [2021-11-25 17:50:51,322 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:51" (1/1) ... [2021-11-25 17:50:51,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:51" (1/1) ... [2021-11-25 17:50:51,329 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 17:50:51,330 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 17:50:51,330 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 17:50:51,330 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 17:50:51,332 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:51" (1/1) ... [2021-11-25 17:50:51,339 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:50:51,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd6a5a0-c62c-4fbf-baf7-d9661c5bace8/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:50:51,359 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd6a5a0-c62c-4fbf-baf7-d9661c5bace8/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 17:50:51,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd6a5a0-c62c-4fbf-baf7-d9661c5bace8/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 17:50:51,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 17:50:51,406 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-25 17:50:51,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 17:50:51,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 17:50:51,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 17:50:51,407 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-11-25 17:50:51,407 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-11-25 17:50:51,407 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-11-25 17:50:51,407 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-11-25 17:50:51,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 17:50:51,407 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-25 17:50:51,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 17:50:51,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 17:50:51,409 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-25 17:50:51,557 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 17:50:51,573 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 17:50:52,180 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 17:50:52,529 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 17:50:52,529 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 17:50:52,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:50:52 BoogieIcfgContainer [2021-11-25 17:50:52,532 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 17:50:52,534 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 17:50:52,534 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 17:50:52,538 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 17:50:52,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:50:50" (1/3) ... [2021-11-25 17:50:52,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@652ef03d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:50:52, skipping insertion in model container [2021-11-25 17:50:52,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:51" (2/3) ... [2021-11-25 17:50:52,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@652ef03d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:50:52, skipping insertion in model container [2021-11-25 17:50:52,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:50:52" (3/3) ... [2021-11-25 17:50:52,541 INFO L111 eAbstractionObserver]: Analyzing ICFG safe029_power.opt_pso.opt_rmo.opt.i [2021-11-25 17:50:52,547 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-25 17:50:52,547 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 17:50:52,547 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-25 17:50:52,547 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-25 17:50:52,591 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,591 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,591 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,591 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,592 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,593 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,593 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,593 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,593 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,593 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,594 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,594 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,594 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,595 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,595 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,595 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,596 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,596 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,597 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,597 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,597 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,598 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,598 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,598 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,599 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,599 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,599 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,599 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,600 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,600 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,600 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,600 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,600 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,601 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,601 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,601 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,601 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,601 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,602 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,602 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,602 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,603 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,603 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,603 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,603 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,603 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,604 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,604 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,604 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,605 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,605 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,605 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,605 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,605 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,605 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,606 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,606 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,607 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,607 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,607 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,612 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,612 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,612 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,613 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,613 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,613 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,613 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,614 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,614 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,614 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,614 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,615 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,615 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,616 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,617 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,619 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,620 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,620 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,620 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,620 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,621 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,621 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:50:52,622 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-25 17:50:52,662 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 17:50:52,669 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 17:50:52,669 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-25 17:50:52,681 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-25 17:50:52,693 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 93 transitions, 196 flow [2021-11-25 17:50:52,696 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 98 places, 93 transitions, 196 flow [2021-11-25 17:50:52,698 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 98 places, 93 transitions, 196 flow [2021-11-25 17:50:52,734 INFO L129 PetriNetUnfolder]: 2/91 cut-off events. [2021-11-25 17:50:52,735 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-25 17:50:52,738 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 91 events. 2/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2021-11-25 17:50:52,740 INFO L116 LiptonReduction]: Number of co-enabled transitions 1140 [2021-11-25 17:51:10,024 INFO L131 LiptonReduction]: Checked pairs total: 2921 [2021-11-25 17:51:10,025 INFO L133 LiptonReduction]: Total number of compositions: 87 [2021-11-25 17:51:10,033 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 26 places, 19 transitions, 48 flow [2021-11-25 17:51:10,051 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 142 states, 139 states have (on average 2.366906474820144) internal successors, (329), 141 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:10,054 INFO L276 IsEmpty]: Start isEmpty. Operand has 142 states, 139 states have (on average 2.366906474820144) internal successors, (329), 141 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:10,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-25 17:51:10,059 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:51:10,059 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-25 17:51:10,060 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-11-25 17:51:10,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:51:10,064 INFO L85 PathProgramCache]: Analyzing trace with hash 923072544, now seen corresponding path program 1 times [2021-11-25 17:51:10,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:51:10,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632560691] [2021-11-25 17:51:10,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:51:10,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:51:10,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:51:10,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:51:10,295 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:51:10,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632560691] [2021-11-25 17:51:10,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632560691] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:51:10,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:51:10,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-25 17:51:10,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512836985] [2021-11-25 17:51:10,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:51:10,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:51:10,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:51:10,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:51:10,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:51:10,334 INFO L87 Difference]: Start difference. First operand has 142 states, 139 states have (on average 2.366906474820144) internal successors, (329), 141 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:10,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:51:10,423 INFO L93 Difference]: Finished difference Result 117 states and 264 transitions. [2021-11-25 17:51:10,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:51:10,426 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-25 17:51:10,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:51:10,435 INFO L225 Difference]: With dead ends: 117 [2021-11-25 17:51:10,435 INFO L226 Difference]: Without dead ends: 112 [2021-11-25 17:51:10,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:51:10,440 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 4 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 17:51:10,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 4 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 17:51:10,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-11-25 17:51:10,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2021-11-25 17:51:10,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 2.2972972972972974) internal successors, (255), 111 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:10,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 255 transitions. [2021-11-25 17:51:10,484 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 255 transitions. Word has length 5 [2021-11-25 17:51:10,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:51:10,484 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 255 transitions. [2021-11-25 17:51:10,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:10,485 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 255 transitions. [2021-11-25 17:51:10,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-25 17:51:10,486 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:51:10,486 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:51:10,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 17:51:10,486 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-11-25 17:51:10,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:51:10,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1985425406, now seen corresponding path program 1 times [2021-11-25 17:51:10,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:51:10,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667864666] [2021-11-25 17:51:10,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:51:10,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:51:10,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:51:10,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:51:10,668 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:51:10,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667864666] [2021-11-25 17:51:10,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667864666] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:51:10,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:51:10,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-25 17:51:10,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667028704] [2021-11-25 17:51:10,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:51:10,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:51:10,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:51:10,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:51:10,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:51:10,672 INFO L87 Difference]: Start difference. First operand 112 states and 255 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:10,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:51:10,721 INFO L93 Difference]: Finished difference Result 110 states and 249 transitions. [2021-11-25 17:51:10,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:51:10,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-25 17:51:10,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:51:10,724 INFO L225 Difference]: With dead ends: 110 [2021-11-25 17:51:10,724 INFO L226 Difference]: Without dead ends: 110 [2021-11-25 17:51:10,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:51:10,726 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 1 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:51:10,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 3 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 17:51:10,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-11-25 17:51:10,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2021-11-25 17:51:10,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 2.2844036697247705) internal successors, (249), 109 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:10,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 249 transitions. [2021-11-25 17:51:10,739 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 249 transitions. Word has length 7 [2021-11-25 17:51:10,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:51:10,740 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 249 transitions. [2021-11-25 17:51:10,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:10,740 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 249 transitions. [2021-11-25 17:51:10,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-25 17:51:10,741 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:51:10,741 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:51:10,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 17:51:10,742 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-11-25 17:51:10,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:51:10,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1419659425, now seen corresponding path program 1 times [2021-11-25 17:51:10,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:51:10,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184855324] [2021-11-25 17:51:10,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:51:10,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:51:10,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:51:10,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:51:10,932 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:51:10,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184855324] [2021-11-25 17:51:10,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184855324] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:51:10,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:51:10,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:51:10,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123618958] [2021-11-25 17:51:10,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:51:10,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 17:51:10,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:51:10,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 17:51:10,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:51:10,944 INFO L87 Difference]: Start difference. First operand 110 states and 249 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:11,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:51:11,039 INFO L93 Difference]: Finished difference Result 113 states and 249 transitions. [2021-11-25 17:51:11,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 17:51:11,040 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-25 17:51:11,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:51:11,043 INFO L225 Difference]: With dead ends: 113 [2021-11-25 17:51:11,046 INFO L226 Difference]: Without dead ends: 113 [2021-11-25 17:51:11,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:51:11,048 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 20 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 17:51:11,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 5 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 17:51:11,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-11-25 17:51:11,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2021-11-25 17:51:11,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 2.2232142857142856) internal successors, (249), 112 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:11,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 249 transitions. [2021-11-25 17:51:11,073 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 249 transitions. Word has length 8 [2021-11-25 17:51:11,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:51:11,074 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 249 transitions. [2021-11-25 17:51:11,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:11,074 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 249 transitions. [2021-11-25 17:51:11,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-25 17:51:11,076 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:51:11,077 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:51:11,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 17:51:11,077 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-11-25 17:51:11,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:51:11,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1814793730, now seen corresponding path program 1 times [2021-11-25 17:51:11,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:51:11,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332364320] [2021-11-25 17:51:11,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:51:11,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:51:11,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:51:11,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:51:11,220 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:51:11,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332364320] [2021-11-25 17:51:11,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332364320] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:51:11,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:51:11,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 17:51:11,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498411378] [2021-11-25 17:51:11,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:51:11,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:51:11,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:51:11,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:51:11,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:51:11,223 INFO L87 Difference]: Start difference. First operand 113 states and 249 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:11,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:51:11,274 INFO L93 Difference]: Finished difference Result 153 states and 326 transitions. [2021-11-25 17:51:11,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:51:11,274 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-25 17:51:11,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:51:11,276 INFO L225 Difference]: With dead ends: 153 [2021-11-25 17:51:11,276 INFO L226 Difference]: Without dead ends: 95 [2021-11-25 17:51:11,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:51:11,278 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 6 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:51:11,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 4 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 17:51:11,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-11-25 17:51:11,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 89. [2021-11-25 17:51:11,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 2.0681818181818183) internal successors, (182), 88 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:11,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 182 transitions. [2021-11-25 17:51:11,294 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 182 transitions. Word has length 10 [2021-11-25 17:51:11,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:51:11,294 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 182 transitions. [2021-11-25 17:51:11,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:11,294 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 182 transitions. [2021-11-25 17:51:11,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-25 17:51:11,295 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:51:11,296 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:51:11,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 17:51:11,296 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-11-25 17:51:11,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:51:11,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1358068137, now seen corresponding path program 1 times [2021-11-25 17:51:11,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:51:11,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168969147] [2021-11-25 17:51:11,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:51:11,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:51:11,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:51:11,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:51:11,652 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:51:11,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168969147] [2021-11-25 17:51:11,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168969147] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:51:11,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:51:11,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 17:51:11,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501699302] [2021-11-25 17:51:11,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:51:11,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 17:51:11,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:51:11,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 17:51:11,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:51:11,659 INFO L87 Difference]: Start difference. First operand 89 states and 182 transitions. Second operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:11,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:51:11,815 INFO L93 Difference]: Finished difference Result 100 states and 197 transitions. [2021-11-25 17:51:11,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 17:51:11,815 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-25 17:51:11,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:51:11,816 INFO L225 Difference]: With dead ends: 100 [2021-11-25 17:51:11,817 INFO L226 Difference]: Without dead ends: 93 [2021-11-25 17:51:11,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-25 17:51:11,818 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 28 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 17:51:11,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 7 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 17:51:11,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-11-25 17:51:11,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2021-11-25 17:51:11,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 2.0217391304347827) internal successors, (186), 92 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) [2021-11-25 17:51:11,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 186 transitions. [2021-11-25 17:51:11,826 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 186 transitions. Word has length 11 [2021-11-25 17:51:11,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:51:11,826 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 186 transitions. [2021-11-25 17:51:11,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:11,827 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 186 transitions. [2021-11-25 17:51:11,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-25 17:51:11,828 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:51:11,828 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:51:11,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 17:51:11,828 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-11-25 17:51:11,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:51:11,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1356143967, now seen corresponding path program 2 times [2021-11-25 17:51:11,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:51:11,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603466488] [2021-11-25 17:51:11,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:51:11,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:51:11,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:51:12,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:51:12,058 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:51:12,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603466488] [2021-11-25 17:51:12,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603466488] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:51:12,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:51:12,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 17:51:12,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027941895] [2021-11-25 17:51:12,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:51:12,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 17:51:12,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:51:12,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 17:51:12,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:51:12,065 INFO L87 Difference]: Start difference. First operand 93 states and 186 transitions. Second operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:12,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:51:12,197 INFO L93 Difference]: Finished difference Result 102 states and 198 transitions. [2021-11-25 17:51:12,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 17:51:12,198 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-25 17:51:12,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:51:12,199 INFO L225 Difference]: With dead ends: 102 [2021-11-25 17:51:12,199 INFO L226 Difference]: Without dead ends: 89 [2021-11-25 17:51:12,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-25 17:51:12,200 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 18 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 17:51:12,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 9 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 17:51:12,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-11-25 17:51:12,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2021-11-25 17:51:12,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 2.0113636363636362) internal successors, (177), 88 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:12,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 177 transitions. [2021-11-25 17:51:12,207 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 177 transitions. Word has length 11 [2021-11-25 17:51:12,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:51:12,207 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 177 transitions. [2021-11-25 17:51:12,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:12,207 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 177 transitions. [2021-11-25 17:51:12,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-25 17:51:12,208 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:51:12,208 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:51:12,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 17:51:12,208 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-11-25 17:51:12,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:51:12,209 INFO L85 PathProgramCache]: Analyzing trace with hash -591888349, now seen corresponding path program 3 times [2021-11-25 17:51:12,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:51:12,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233071866] [2021-11-25 17:51:12,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:51:12,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:51:12,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:51:12,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:51:12,392 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:51:12,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233071866] [2021-11-25 17:51:12,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233071866] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:51:12,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:51:12,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 17:51:12,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062598449] [2021-11-25 17:51:12,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:51:12,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 17:51:12,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:51:12,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 17:51:12,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:51:12,394 INFO L87 Difference]: Start difference. First operand 89 states and 177 transitions. Second operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:12,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:51:12,494 INFO L93 Difference]: Finished difference Result 109 states and 207 transitions. [2021-11-25 17:51:12,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 17:51:12,494 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-25 17:51:12,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:51:12,495 INFO L225 Difference]: With dead ends: 109 [2021-11-25 17:51:12,495 INFO L226 Difference]: Without dead ends: 75 [2021-11-25 17:51:12,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-25 17:51:12,497 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 26 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 17:51:12,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 6 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 17:51:12,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-11-25 17:51:12,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 63. [2021-11-25 17:51:12,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.967741935483871) internal successors, (122), 62 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:12,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 122 transitions. [2021-11-25 17:51:12,515 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 122 transitions. Word has length 11 [2021-11-25 17:51:12,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:51:12,515 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 122 transitions. [2021-11-25 17:51:12,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:12,517 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 122 transitions. [2021-11-25 17:51:12,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-25 17:51:12,519 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:51:12,519 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:51:12,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 17:51:12,519 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-11-25 17:51:12,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:51:12,520 INFO L85 PathProgramCache]: Analyzing trace with hash -423992935, now seen corresponding path program 1 times [2021-11-25 17:51:12,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:51:12,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339533959] [2021-11-25 17:51:12,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:51:12,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:51:12,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:51:12,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:51:12,631 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:51:12,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339533959] [2021-11-25 17:51:12,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339533959] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:51:12,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:51:12,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:51:12,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224623192] [2021-11-25 17:51:12,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:51:12,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 17:51:12,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:51:12,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 17:51:12,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 17:51:12,636 INFO L87 Difference]: Start difference. First operand 63 states and 122 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:12,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:51:12,689 INFO L93 Difference]: Finished difference Result 57 states and 91 transitions. [2021-11-25 17:51:12,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 17:51:12,690 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-25 17:51:12,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:51:12,690 INFO L225 Difference]: With dead ends: 57 [2021-11-25 17:51:12,690 INFO L226 Difference]: Without dead ends: 40 [2021-11-25 17:51:12,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:51:12,692 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 18 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:51:12,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 7 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 17:51:12,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-11-25 17:51:12,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-11-25 17:51:12,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.5128205128205128) internal successors, (59), 39 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:12,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 59 transitions. [2021-11-25 17:51:12,695 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 59 transitions. Word has length 11 [2021-11-25 17:51:12,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:51:12,695 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 59 transitions. [2021-11-25 17:51:12,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:12,695 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 59 transitions. [2021-11-25 17:51:12,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-25 17:51:12,696 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:51:12,696 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:51:12,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 17:51:12,696 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-11-25 17:51:12,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:51:12,697 INFO L85 PathProgramCache]: Analyzing trace with hash -641569163, now seen corresponding path program 1 times [2021-11-25 17:51:12,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:51:12,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757530460] [2021-11-25 17:51:12,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:51:12,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:51:12,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:51:12,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:51:12,766 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:51:12,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757530460] [2021-11-25 17:51:12,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757530460] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:51:12,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:51:12,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 17:51:12,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278067340] [2021-11-25 17:51:12,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:51:12,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 17:51:12,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:51:12,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 17:51:12,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:51:12,768 INFO L87 Difference]: Start difference. First operand 40 states and 59 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:12,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:51:12,829 INFO L93 Difference]: Finished difference Result 31 states and 40 transitions. [2021-11-25 17:51:12,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 17:51:12,830 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-25 17:51:12,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:51:12,830 INFO L225 Difference]: With dead ends: 31 [2021-11-25 17:51:12,830 INFO L226 Difference]: Without dead ends: 20 [2021-11-25 17:51:12,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-25 17:51:12,831 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 18 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 17:51:12,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 4 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 17:51:12,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-11-25 17:51:12,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-11-25 17:51:12,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:12,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-11-25 17:51:12,834 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 12 [2021-11-25 17:51:12,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:51:12,834 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-11-25 17:51:12,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:12,834 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-11-25 17:51:12,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-25 17:51:12,835 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:51:12,835 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:51:12,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 17:51:12,835 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-11-25 17:51:12,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:51:12,836 INFO L85 PathProgramCache]: Analyzing trace with hash 18991727, now seen corresponding path program 1 times [2021-11-25 17:51:12,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:51:12,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589531247] [2021-11-25 17:51:12,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:51:12,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:51:12,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 17:51:12,907 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 17:51:12,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 17:51:12,990 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-25 17:51:12,990 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 17:51:12,991 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2021-11-25 17:51:12,993 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2021-11-25 17:51:12,993 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 5 remaining) [2021-11-25 17:51:12,993 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 5 remaining) [2021-11-25 17:51:12,994 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2021-11-25 17:51:12,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 17:51:12,996 INFO L732 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:51:13,001 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-25 17:51:13,001 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 17:51:13,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 05:51:13 BasicIcfg [2021-11-25 17:51:13,091 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 17:51:13,092 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 17:51:13,092 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 17:51:13,092 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 17:51:13,093 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:50:52" (3/4) ... [2021-11-25 17:51:13,094 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-25 17:51:13,176 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd6a5a0-c62c-4fbf-baf7-d9661c5bace8/bin/utaipan-eEHZpOm5b7/witness.graphml [2021-11-25 17:51:13,176 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 17:51:13,177 INFO L158 Benchmark]: Toolchain (without parser) took 22706.20ms. Allocated memory was 96.5MB in the beginning and 186.6MB in the end (delta: 90.2MB). Free memory was 53.8MB in the beginning and 122.9MB in the end (delta: -69.1MB). Peak memory consumption was 19.8MB. Max. memory is 16.1GB. [2021-11-25 17:51:13,177 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 96.5MB. Free memory is still 71.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 17:51:13,178 INFO L158 Benchmark]: CACSL2BoogieTranslator took 706.03ms. Allocated memory is still 96.5MB. Free memory was 53.6MB in the beginning and 58.0MB in the end (delta: -4.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-25 17:51:13,178 INFO L158 Benchmark]: Boogie Procedure Inliner took 102.39ms. Allocated memory is still 96.5MB. Free memory was 58.0MB in the beginning and 55.0MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 17:51:13,178 INFO L158 Benchmark]: Boogie Preprocessor took 46.01ms. Allocated memory is still 96.5MB. Free memory was 55.0MB in the beginning and 53.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 17:51:13,179 INFO L158 Benchmark]: RCFGBuilder took 1202.34ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 53.0MB in the beginning and 86.5MB in the end (delta: -33.5MB). Peak memory consumption was 34.1MB. Max. memory is 16.1GB. [2021-11-25 17:51:13,179 INFO L158 Benchmark]: TraceAbstraction took 20557.42ms. Allocated memory was 117.4MB in the beginning and 186.6MB in the end (delta: 69.2MB). Free memory was 85.7MB in the beginning and 130.2MB in the end (delta: -44.5MB). Peak memory consumption was 25.4MB. Max. memory is 16.1GB. [2021-11-25 17:51:13,180 INFO L158 Benchmark]: Witness Printer took 84.54ms. Allocated memory is still 186.6MB. Free memory was 130.2MB in the beginning and 122.9MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-25 17:51:13,182 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 96.5MB. Free memory is still 71.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 706.03ms. Allocated memory is still 96.5MB. Free memory was 53.6MB in the beginning and 58.0MB in the end (delta: -4.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 102.39ms. Allocated memory is still 96.5MB. Free memory was 58.0MB in the beginning and 55.0MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.01ms. Allocated memory is still 96.5MB. Free memory was 55.0MB in the beginning and 53.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1202.34ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 53.0MB in the beginning and 86.5MB in the end (delta: -33.5MB). Peak memory consumption was 34.1MB. Max. memory is 16.1GB. * TraceAbstraction took 20557.42ms. Allocated memory was 117.4MB in the beginning and 186.6MB in the end (delta: 69.2MB). Free memory was 85.7MB in the beginning and 130.2MB in the end (delta: -44.5MB). Peak memory consumption was 25.4MB. Max. memory is 16.1GB. * Witness Printer took 84.54ms. Allocated memory is still 186.6MB. Free memory was 130.2MB in the beginning and 122.9MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 17.3s, 98 PlacesBefore, 26 PlacesAfterwards, 93 TransitionsBefore, 19 TransitionsAfterwards, 1140 CoEnabledTransitionPairs, 7 FixpointIterations, 36 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 87 TotalNumberOfCompositions, 2921 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1450, positive: 1319, positive conditional: 0, positive unconditional: 1319, negative: 131, negative conditional: 0, negative unconditional: 131, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 846, positive: 798, positive conditional: 0, positive unconditional: 798, negative: 48, negative conditional: 0, negative unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 846, positive: 786, positive conditional: 0, positive unconditional: 786, negative: 60, negative conditional: 0, negative unconditional: 60, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 60, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 48, negative conditional: 0, negative unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 695, positive: 89, positive conditional: 0, positive unconditional: 89, negative: 607, negative conditional: 0, negative unconditional: 607, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1450, positive: 521, positive conditional: 0, positive unconditional: 521, negative: 83, negative conditional: 0, negative unconditional: 83, unknown: 846, unknown conditional: 0, unknown unconditional: 846] , Statistics on independence cache: Total cache size (in pairs): 64, Positive cache size: 46, Positive conditional cache size: 0, Positive unconditional cache size: 46, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L708] 0 int __unbuffered_cnt = 0; [L709] 0 _Bool main$tmp_guard0; [L710] 0 _Bool main$tmp_guard1; [L712] 0 int x = 0; [L713] 0 _Bool x$flush_delayed; [L714] 0 int x$mem_tmp; [L715] 0 _Bool x$r_buff0_thd0; [L716] 0 _Bool x$r_buff0_thd1; [L717] 0 _Bool x$r_buff0_thd2; [L718] 0 _Bool x$r_buff1_thd0; [L719] 0 _Bool x$r_buff1_thd1; [L720] 0 _Bool x$r_buff1_thd2; [L721] 0 _Bool x$read_delayed; [L722] 0 int *x$read_delayed_var; [L723] 0 int x$w_buff0; [L724] 0 _Bool x$w_buff0_used; [L725] 0 int x$w_buff1; [L726] 0 _Bool x$w_buff1_used; [L728] 0 int y = 0; [L729] 0 _Bool weak$$choice0; [L730] 0 _Bool weak$$choice2; [L790] 0 pthread_t t2475; [L791] FCALL, FORK 0 pthread_create(&t2475, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2475, ((void *)0), P0, ((void *)0))=-2, t2475={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=0] [L792] 0 pthread_t t2476; [L793] FCALL, FORK 0 pthread_create(&t2476, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2476, ((void *)0), P1, ((void *)0))=-1, t2475={5:0}, t2476={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=0] [L754] 2 x$w_buff1 = x$w_buff0 [L755] 2 x$w_buff0 = 2 [L756] 2 x$w_buff1_used = x$w_buff0_used [L757] 2 x$w_buff0_used = (_Bool)1 [L758] CALL 2 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L18] COND FALSE 2 !(!expression) [L758] RET 2 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L759] 2 x$r_buff1_thd0 = x$r_buff0_thd0 [L760] 2 x$r_buff1_thd1 = x$r_buff0_thd1 [L761] 2 x$r_buff1_thd2 = x$r_buff0_thd2 [L762] 2 x$r_buff0_thd2 = (_Bool)1 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=0] [L765] 2 y = 1 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=1] [L734] 1 y = 2 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=2] [L737] 1 x = 1 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=2] [L740] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd1 ? x$w_buff1 : x) [L740] EXPR 1 x$w_buff1_used && x$r_buff1_thd1 ? x$w_buff1 : x [L740] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd1 ? x$w_buff1 : x) [L740] 1 x = x$w_buff0_used && x$r_buff0_thd1 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd1 ? x$w_buff1 : x) [L741] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$w_buff0_used [L741] 1 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$w_buff0_used [L742] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$w_buff1_used [L742] 1 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$w_buff1_used [L743] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$r_buff0_thd1 [L743] 1 x$r_buff0_thd1 = x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$r_buff0_thd1 [L744] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$r_buff1_thd1 [L744] 1 x$r_buff1_thd1 = x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$r_buff1_thd1 [L747] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L749] 1 return 0; [L768] EXPR 2 x$w_buff0_used && x$r_buff0_thd2 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd2 ? x$w_buff1 : x) [L768] 2 x = x$w_buff0_used && x$r_buff0_thd2 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd2 ? x$w_buff1 : x) [L769] EXPR 2 x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$w_buff0_used [L769] 2 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$w_buff0_used [L770] EXPR 2 x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$w_buff1_used [L770] 2 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$w_buff1_used [L771] EXPR 2 x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$r_buff0_thd2 [L771] 2 x$r_buff0_thd2 = x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$r_buff0_thd2 [L772] EXPR 2 x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$r_buff1_thd2 [L772] 2 x$r_buff1_thd2 = x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$r_buff1_thd2 [L775] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L777] 2 return 0; [L795] 0 main$tmp_guard0 = __unbuffered_cnt == 2 [L797] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L797] RET 0 assume_abort_if_not(main$tmp_guard0) [L799] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x) [L799] EXPR 0 x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x [L799] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x) [L799] 0 x = x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x) [L800] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used [L800] 0 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used [L801] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$w_buff1_used [L801] 0 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$w_buff1_used [L802] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0 [L802] 0 x$r_buff0_thd0 = x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0 [L803] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$r_buff1_thd0 [L803] 0 x$r_buff1_thd0 = x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$r_buff1_thd0 [L806] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L807] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L808] 0 x$flush_delayed = weak$$choice2 [L809] 0 x$mem_tmp = x [L810] EXPR 0 !x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff1) [L810] 0 x = !x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff1) [L811] EXPR 0 weak$$choice2 ? x$w_buff0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff0)) [L811] 0 x$w_buff0 = weak$$choice2 ? x$w_buff0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff0)) [L812] EXPR 0 weak$$choice2 ? x$w_buff1 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff1 : x$w_buff1)) [L812] 0 x$w_buff1 = weak$$choice2 ? x$w_buff1 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff1 : x$w_buff1)) [L813] EXPR 0 weak$$choice2 ? x$w_buff0_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used)) [L813] 0 x$w_buff0_used = weak$$choice2 ? x$w_buff0_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used)) [L814] EXPR 0 weak$$choice2 ? x$w_buff1_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L814] 0 x$w_buff1_used = weak$$choice2 ? x$w_buff1_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L815] EXPR 0 weak$$choice2 ? x$r_buff0_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff0_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0)) [L815] 0 x$r_buff0_thd0 = weak$$choice2 ? x$r_buff0_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff0_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0)) [L816] EXPR 0 weak$$choice2 ? x$r_buff1_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff1_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L816] 0 x$r_buff1_thd0 = weak$$choice2 ? x$r_buff1_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff1_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L817] 0 main$tmp_guard1 = !(x == 2 && y == 2) [L818] EXPR 0 x$flush_delayed ? x$mem_tmp : x [L818] 0 x = x$flush_delayed ? x$mem_tmp : x [L819] 0 x$flush_delayed = (_Bool)0 [L821] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\old(expression)=1, \old(expression)=0, \result={0:0}, __unbuffered_cnt=2, arg={0:0}, arg={0:0}, expression=0, expression=1, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=51, weak$$choice2=255, x=2, x$flush_delayed=0, x$mem_tmp=2, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=2] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 791]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 793]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 111 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 20.3s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 17.4s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 139 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 139 mSDsluCounter, 49 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 160 mSDsCounter, 62 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 446 IncrementalHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 62 mSolverCounterUnsat, 21 mSDtfsCounter, 446 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=142occurred in iteration=0, InterpolantAutomatonStates: 41, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 18 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 101 NumberOfCodeBlocks, 101 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 77 ConstructedInterpolants, 0 QuantifiedInterpolants, 668 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-25 17:51:13,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd6a5a0-c62c-4fbf-baf7-d9661c5bace8/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE