./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe029_power.oepc_pso.oepc_rmo.oepc.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_cacb7692-8429-4aed-bb9b-c40c4932d1cd/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cacb7692-8429-4aed-bb9b-c40c4932d1cd/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cacb7692-8429-4aed-bb9b-c40c4932d1cd/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cacb7692-8429-4aed-bb9b-c40c4932d1cd/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe029_power.oepc_pso.oepc_rmo.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cacb7692-8429-4aed-bb9b-c40c4932d1cd/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cacb7692-8429-4aed-bb9b-c40c4932d1cd/bin/uautomizer-DrprNOufMa --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7db5da573de5a20455a36e013b1614f5d7f4dede9c4027ebf8a62a657a5ca5e2 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 18:25:59,569 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 18:25:59,571 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 18:25:59,592 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 18:25:59,593 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 18:25:59,594 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 18:25:59,595 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 18:25:59,597 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 18:25:59,598 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 18:25:59,599 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 18:25:59,600 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 18:25:59,601 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 18:25:59,602 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 18:25:59,602 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 18:25:59,604 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 18:25:59,605 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 18:25:59,606 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 18:25:59,606 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 18:25:59,608 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 18:25:59,610 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 18:25:59,611 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 18:25:59,613 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 18:25:59,614 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 18:25:59,615 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 18:25:59,617 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 18:25:59,618 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 18:25:59,618 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 18:25:59,619 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 18:25:59,619 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 18:25:59,620 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 18:25:59,620 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 18:25:59,621 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 18:25:59,621 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 18:25:59,622 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 18:25:59,623 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 18:25:59,623 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 18:25:59,623 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 18:25:59,624 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 18:25:59,624 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 18:25:59,624 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 18:25:59,625 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 18:25:59,626 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cacb7692-8429-4aed-bb9b-c40c4932d1cd/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 18:25:59,648 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 18:25:59,649 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 18:25:59,649 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 18:25:59,649 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 18:25:59,650 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 18:25:59,650 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 18:25:59,650 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 18:25:59,651 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 18:25:59,651 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 18:25:59,651 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 18:25:59,651 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 18:25:59,651 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 18:25:59,652 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 18:25:59,652 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 18:25:59,652 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 18:25:59,652 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 18:25:59,652 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 18:25:59,652 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 18:25:59,652 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 18:25:59,653 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 18:25:59,653 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 18:25:59,653 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 18:25:59,653 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 18:25:59,653 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 18:25:59,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:25:59,653 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 18:25:59,653 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 18:25:59,654 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 18:25:59,654 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 18:25:59,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 18:25:59,654 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 18:25:59,654 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 18:25:59,654 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 18:25:59,654 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 18:25:59,654 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cacb7692-8429-4aed-bb9b-c40c4932d1cd/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cacb7692-8429-4aed-bb9b-c40c4932d1cd/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7db5da573de5a20455a36e013b1614f5d7f4dede9c4027ebf8a62a657a5ca5e2 [2021-12-06 18:25:59,853 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 18:25:59,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 18:25:59,871 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 18:25:59,871 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 18:25:59,872 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 18:25:59,873 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cacb7692-8429-4aed-bb9b-c40c4932d1cd/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/pthread-wmm/safe029_power.oepc_pso.oepc_rmo.oepc.i [2021-12-06 18:25:59,923 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cacb7692-8429-4aed-bb9b-c40c4932d1cd/bin/uautomizer-DrprNOufMa/data/86c36ec26/b3effa8529ff482994ab18522dec7899/FLAGc286e45aa [2021-12-06 18:26:00,384 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 18:26:00,384 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cacb7692-8429-4aed-bb9b-c40c4932d1cd/sv-benchmarks/c/pthread-wmm/safe029_power.oepc_pso.oepc_rmo.oepc.i [2021-12-06 18:26:00,394 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cacb7692-8429-4aed-bb9b-c40c4932d1cd/bin/uautomizer-DrprNOufMa/data/86c36ec26/b3effa8529ff482994ab18522dec7899/FLAGc286e45aa [2021-12-06 18:26:00,404 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cacb7692-8429-4aed-bb9b-c40c4932d1cd/bin/uautomizer-DrprNOufMa/data/86c36ec26/b3effa8529ff482994ab18522dec7899 [2021-12-06 18:26:00,406 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 18:26:00,407 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 18:26:00,408 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 18:26:00,408 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 18:26:00,411 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 18:26:00,412 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:26:00" (1/1) ... [2021-12-06 18:26:00,412 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d306371 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:26:00, skipping insertion in model container [2021-12-06 18:26:00,413 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:26:00" (1/1) ... [2021-12-06 18:26:00,418 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 18:26:00,446 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 18:26:00,587 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cacb7692-8429-4aed-bb9b-c40c4932d1cd/sv-benchmarks/c/pthread-wmm/safe029_power.oepc_pso.oepc_rmo.oepc.i[970,983] [2021-12-06 18:26:00,735 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:26:00,743 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 18:26:00,754 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_cacb7692-8429-4aed-bb9b-c40c4932d1cd/sv-benchmarks/c/pthread-wmm/safe029_power.oepc_pso.oepc_rmo.oepc.i[970,983] [2021-12-06 18:26:00,794 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:26:00,830 INFO L208 MainTranslator]: Completed translation [2021-12-06 18:26:00,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:26:00 WrapperNode [2021-12-06 18:26:00,831 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 18:26:00,832 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 18:26:00,832 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 18:26:00,832 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 18:26:00,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:26:00" (1/1) ... [2021-12-06 18:26:00,851 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:26:00" (1/1) ... [2021-12-06 18:26:00,874 INFO L137 Inliner]: procedures = 175, calls = 41, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 258 [2021-12-06 18:26:00,874 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 18:26:00,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 18:26:00,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 18:26:00,875 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 18:26:00,881 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:26:00" (1/1) ... [2021-12-06 18:26:00,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:26:00" (1/1) ... [2021-12-06 18:26:00,884 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:26:00" (1/1) ... [2021-12-06 18:26:00,884 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:26:00" (1/1) ... [2021-12-06 18:26:00,892 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:26:00" (1/1) ... [2021-12-06 18:26:00,894 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:26:00" (1/1) ... [2021-12-06 18:26:00,897 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:26:00" (1/1) ... [2021-12-06 18:26:00,899 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 18:26:00,900 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 18:26:00,900 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 18:26:00,900 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 18:26:00,901 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:26:00" (1/1) ... [2021-12-06 18:26:00,907 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:26:00,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cacb7692-8429-4aed-bb9b-c40c4932d1cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:26:00,925 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cacb7692-8429-4aed-bb9b-c40c4932d1cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 18:26:00,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cacb7692-8429-4aed-bb9b-c40c4932d1cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 18:26:00,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 18:26:00,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-06 18:26:00,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 18:26:00,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 18:26:00,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 18:26:00,954 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-12-06 18:26:00,954 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-12-06 18:26:00,954 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-12-06 18:26:00,954 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-12-06 18:26:00,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 18:26:00,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-06 18:26:00,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 18:26:00,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 18:26:00,955 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-06 18:26:01,036 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 18:26:01,037 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 18:26:01,339 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 18:26:01,558 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 18:26:01,558 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-06 18:26:01,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:26:01 BoogieIcfgContainer [2021-12-06 18:26:01,560 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 18:26:01,562 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 18:26:01,562 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 18:26:01,564 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 18:26:01,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 06:26:00" (1/3) ... [2021-12-06 18:26:01,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b68f42a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:26:01, skipping insertion in model container [2021-12-06 18:26:01,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:26:00" (2/3) ... [2021-12-06 18:26:01,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b68f42a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:26:01, skipping insertion in model container [2021-12-06 18:26:01,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:26:01" (3/3) ... [2021-12-06 18:26:01,567 INFO L111 eAbstractionObserver]: Analyzing ICFG safe029_power.oepc_pso.oepc_rmo.oepc.i [2021-12-06 18:26:01,571 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-06 18:26:01,571 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 18:26:01,571 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-06 18:26:01,572 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-06 18:26:01,595 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,595 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,596 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,596 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,596 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,596 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,596 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,596 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,596 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,597 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,597 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,597 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,597 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,597 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,597 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,597 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,598 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,598 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,598 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,598 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,598 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,598 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,598 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,599 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,599 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,599 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,599 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,599 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,599 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,600 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,600 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,600 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,600 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,600 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,601 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,601 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,601 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,601 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,601 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,601 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,601 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,601 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,602 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,602 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,602 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,602 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,602 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,602 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,602 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,603 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,603 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,603 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,603 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,603 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,603 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,603 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,604 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,604 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,604 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,604 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,606 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,607 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,607 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,607 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,607 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,607 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,607 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,608 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,608 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,608 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,608 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,609 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,609 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,609 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,609 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,609 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,609 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,610 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,610 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,610 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,610 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,610 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:26:01,610 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-12-06 18:26:01,647 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 18:26:01,652 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=PETRI_NET, 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 [2021-12-06 18:26:01,652 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-12-06 18:26:01,661 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 98 places, 93 transitions, 196 flow [2021-12-06 18:26:01,688 INFO L129 PetriNetUnfolder]: 2/91 cut-off events. [2021-12-06 18:26:01,688 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-06 18:26:01,691 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 44 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. [2021-12-06 18:26:01,691 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 93 transitions, 196 flow [2021-12-06 18:26:01,694 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 91 transitions, 188 flow [2021-12-06 18:26:01,701 INFO L129 PetriNetUnfolder]: 0/42 cut-off events. [2021-12-06 18:26:01,702 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-06 18:26:01,702 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:26:01,702 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:26:01,703 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-12-06 18:26:01,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:26:01,706 INFO L85 PathProgramCache]: Analyzing trace with hash -761824995, now seen corresponding path program 1 times [2021-12-06 18:26:01,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:26:01,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226973341] [2021-12-06 18:26:01,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:26:01,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:26:01,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:26:01,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:26:01,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:26:01,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226973341] [2021-12-06 18:26:01,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226973341] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:26:01,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:26:01,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:26:01,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519388111] [2021-12-06 18:26:01,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:26:01,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:26:01,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:26:01,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:26:01,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:26:01,931 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 93 [2021-12-06 18:26:01,934 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 91 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 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) [2021-12-06 18:26:01,934 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:26:01,934 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 93 [2021-12-06 18:26:01,935 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:26:02,040 INFO L129 PetriNetUnfolder]: 18/233 cut-off events. [2021-12-06 18:26:02,041 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-12-06 18:26:02,042 INFO L84 FinitePrefix]: Finished finitePrefix Result has 285 conditions, 233 events. 18/233 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 794 event pairs, 12 based on Foata normal form. 8/227 useless extension candidates. Maximal degree in co-relation 239. Up to 31 conditions per place. [2021-12-06 18:26:02,045 INFO L132 encePairwiseOnDemand]: 88/93 looper letters, 10 selfloop transitions, 2 changer transitions 0/91 dead transitions. [2021-12-06 18:26:02,045 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 91 transitions, 215 flow [2021-12-06 18:26:02,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:26:02,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-06 18:26:02,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 260 transitions. [2021-12-06 18:26:02,059 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.931899641577061 [2021-12-06 18:26:02,060 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 260 transitions. [2021-12-06 18:26:02,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 260 transitions. [2021-12-06 18:26:02,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:26:02,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 260 transitions. [2021-12-06 18:26:02,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 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) [2021-12-06 18:26:02,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 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) [2021-12-06 18:26:02,075 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 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) [2021-12-06 18:26:02,077 INFO L186 Difference]: Start difference. First operand has 96 places, 91 transitions, 188 flow. Second operand 3 states and 260 transitions. [2021-12-06 18:26:02,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 91 transitions, 215 flow [2021-12-06 18:26:02,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 91 transitions, 212 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-06 18:26:02,084 INFO L242 Difference]: Finished difference. Result has 94 places, 87 transitions, 182 flow [2021-12-06 18:26:02,086 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=94, PETRI_TRANSITIONS=87} [2021-12-06 18:26:02,090 INFO L334 CegarLoopForPetriNet]: 96 programPoint places, -2 predicate places. [2021-12-06 18:26:02,090 INFO L470 AbstractCegarLoop]: Abstraction has has 94 places, 87 transitions, 182 flow [2021-12-06 18:26:02,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 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) [2021-12-06 18:26:02,091 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:26:02,091 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:26:02,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 18:26:02,091 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-12-06 18:26:02,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:26:02,092 INFO L85 PathProgramCache]: Analyzing trace with hash -29849764, now seen corresponding path program 1 times [2021-12-06 18:26:02,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:26:02,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672633495] [2021-12-06 18:26:02,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:26:02,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:26:02,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:26:02,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:26:02,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:26:02,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672633495] [2021-12-06 18:26:02,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672633495] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:26:02,285 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:26:02,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 18:26:02,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615671030] [2021-12-06 18:26:02,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:26:02,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:26:02,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:26:02,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:26:02,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:26:02,289 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 93 [2021-12-06 18:26:02,290 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 87 transitions, 182 flow. Second operand has 6 states, 6 states have (on average 74.66666666666667) internal successors, (448), 6 states have internal predecessors, (448), 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) [2021-12-06 18:26:02,290 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:26:02,290 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 93 [2021-12-06 18:26:02,291 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:26:02,556 INFO L129 PetriNetUnfolder]: 179/654 cut-off events. [2021-12-06 18:26:02,556 INFO L130 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2021-12-06 18:26:02,559 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1031 conditions, 654 events. 179/654 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3783 event pairs, 62 based on Foata normal form. 0/631 useless extension candidates. Maximal degree in co-relation 984. Up to 186 conditions per place. [2021-12-06 18:26:02,561 INFO L132 encePairwiseOnDemand]: 86/93 looper letters, 17 selfloop transitions, 3 changer transitions 43/125 dead transitions. [2021-12-06 18:26:02,561 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 125 transitions, 382 flow [2021-12-06 18:26:02,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 18:26:02,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-06 18:26:02,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 713 transitions. [2021-12-06 18:26:02,567 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8518518518518519 [2021-12-06 18:26:02,567 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 713 transitions. [2021-12-06 18:26:02,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 713 transitions. [2021-12-06 18:26:02,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:26:02,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 713 transitions. [2021-12-06 18:26:02,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 79.22222222222223) internal successors, (713), 9 states have internal predecessors, (713), 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) [2021-12-06 18:26:02,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 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) [2021-12-06 18:26:02,576 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 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) [2021-12-06 18:26:02,576 INFO L186 Difference]: Start difference. First operand has 94 places, 87 transitions, 182 flow. Second operand 9 states and 713 transitions. [2021-12-06 18:26:02,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 125 transitions, 382 flow [2021-12-06 18:26:02,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 125 transitions, 364 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-06 18:26:02,580 INFO L242 Difference]: Finished difference. Result has 107 places, 79 transitions, 201 flow [2021-12-06 18:26:02,580 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=201, PETRI_PLACES=107, PETRI_TRANSITIONS=79} [2021-12-06 18:26:02,580 INFO L334 CegarLoopForPetriNet]: 96 programPoint places, 11 predicate places. [2021-12-06 18:26:02,581 INFO L470 AbstractCegarLoop]: Abstraction has has 107 places, 79 transitions, 201 flow [2021-12-06 18:26:02,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 74.66666666666667) internal successors, (448), 6 states have internal predecessors, (448), 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) [2021-12-06 18:26:02,581 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:26:02,581 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:26:02,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 18:26:02,581 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-12-06 18:26:02,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:26:02,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1473150781, now seen corresponding path program 1 times [2021-12-06 18:26:02,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:26:02,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355500832] [2021-12-06 18:26:02,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:26:02,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:26:02,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:26:02,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:26:02,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:26:02,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355500832] [2021-12-06 18:26:02,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355500832] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:26:02,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:26:02,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 18:26:02,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664824237] [2021-12-06 18:26:02,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:26:02,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 18:26:02,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:26:02,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 18:26:02,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-12-06 18:26:02,826 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 93 [2021-12-06 18:26:02,827 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 79 transitions, 201 flow. Second operand has 10 states, 10 states have (on average 71.4) internal successors, (714), 10 states have internal predecessors, (714), 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) [2021-12-06 18:26:02,827 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:26:02,827 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 93 [2021-12-06 18:26:02,827 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:26:03,116 INFO L129 PetriNetUnfolder]: 141/410 cut-off events. [2021-12-06 18:26:03,116 INFO L130 PetriNetUnfolder]: For 307/308 co-relation queries the response was YES. [2021-12-06 18:26:03,117 INFO L84 FinitePrefix]: Finished finitePrefix Result has 930 conditions, 410 events. 141/410 cut-off events. For 307/308 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1862 event pairs, 34 based on Foata normal form. 14/414 useless extension candidates. Maximal degree in co-relation 872. Up to 133 conditions per place. [2021-12-06 18:26:03,119 INFO L132 encePairwiseOnDemand]: 81/93 looper letters, 17 selfloop transitions, 9 changer transitions 35/122 dead transitions. [2021-12-06 18:26:03,119 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 122 transitions, 441 flow [2021-12-06 18:26:03,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 18:26:03,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-06 18:26:03,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1184 transitions. [2021-12-06 18:26:03,123 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7956989247311828 [2021-12-06 18:26:03,123 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1184 transitions. [2021-12-06 18:26:03,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1184 transitions. [2021-12-06 18:26:03,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:26:03,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1184 transitions. [2021-12-06 18:26:03,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 74.0) internal successors, (1184), 16 states have internal predecessors, (1184), 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) [2021-12-06 18:26:03,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 93.0) internal successors, (1581), 17 states have internal predecessors, (1581), 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) [2021-12-06 18:26:03,132 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 93.0) internal successors, (1581), 17 states have internal predecessors, (1581), 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) [2021-12-06 18:26:03,133 INFO L186 Difference]: Start difference. First operand has 107 places, 79 transitions, 201 flow. Second operand 16 states and 1184 transitions. [2021-12-06 18:26:03,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 122 transitions, 441 flow [2021-12-06 18:26:03,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 122 transitions, 420 flow, removed 9 selfloop flow, removed 4 redundant places. [2021-12-06 18:26:03,138 INFO L242 Difference]: Finished difference. Result has 113 places, 83 transitions, 266 flow [2021-12-06 18:26:03,138 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=266, PETRI_PLACES=113, PETRI_TRANSITIONS=83} [2021-12-06 18:26:03,139 INFO L334 CegarLoopForPetriNet]: 96 programPoint places, 17 predicate places. [2021-12-06 18:26:03,139 INFO L470 AbstractCegarLoop]: Abstraction has has 113 places, 83 transitions, 266 flow [2021-12-06 18:26:03,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 71.4) internal successors, (714), 10 states have internal predecessors, (714), 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) [2021-12-06 18:26:03,140 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:26:03,140 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:26:03,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 18:26:03,140 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-12-06 18:26:03,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:26:03,141 INFO L85 PathProgramCache]: Analyzing trace with hash -226472556, now seen corresponding path program 1 times [2021-12-06 18:26:03,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:26:03,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704678799] [2021-12-06 18:26:03,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:26:03,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:26:03,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:26:03,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:26:03,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:26:03,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704678799] [2021-12-06 18:26:03,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704678799] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:26:03,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:26:03,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 18:26:03,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288384197] [2021-12-06 18:26:03,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:26:03,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:26:03,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:26:03,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:26:03,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:26:03,264 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 93 [2021-12-06 18:26:03,265 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 83 transitions, 266 flow. Second operand has 7 states, 7 states have (on average 74.71428571428571) internal successors, (523), 7 states have internal predecessors, (523), 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) [2021-12-06 18:26:03,265 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:26:03,265 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 93 [2021-12-06 18:26:03,265 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:26:03,485 INFO L129 PetriNetUnfolder]: 111/350 cut-off events. [2021-12-06 18:26:03,486 INFO L130 PetriNetUnfolder]: For 968/976 co-relation queries the response was YES. [2021-12-06 18:26:03,487 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1108 conditions, 350 events. 111/350 cut-off events. For 968/976 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1486 event pairs, 30 based on Foata normal form. 10/347 useless extension candidates. Maximal degree in co-relation 1039. Up to 119 conditions per place. [2021-12-06 18:26:03,490 INFO L132 encePairwiseOnDemand]: 84/93 looper letters, 23 selfloop transitions, 7 changer transitions 25/119 dead transitions. [2021-12-06 18:26:03,490 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 119 transitions, 614 flow [2021-12-06 18:26:03,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 18:26:03,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-06 18:26:03,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1004 transitions. [2021-12-06 18:26:03,493 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8304383788254756 [2021-12-06 18:26:03,493 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1004 transitions. [2021-12-06 18:26:03,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1004 transitions. [2021-12-06 18:26:03,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:26:03,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1004 transitions. [2021-12-06 18:26:03,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 77.23076923076923) internal successors, (1004), 13 states have internal predecessors, (1004), 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) [2021-12-06 18:26:03,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 93.0) internal successors, (1302), 14 states have internal predecessors, (1302), 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) [2021-12-06 18:26:03,499 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 93.0) internal successors, (1302), 14 states have internal predecessors, (1302), 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) [2021-12-06 18:26:03,499 INFO L186 Difference]: Start difference. First operand has 113 places, 83 transitions, 266 flow. Second operand 13 states and 1004 transitions. [2021-12-06 18:26:03,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 119 transitions, 614 flow [2021-12-06 18:26:03,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 119 transitions, 584 flow, removed 12 selfloop flow, removed 6 redundant places. [2021-12-06 18:26:03,506 INFO L242 Difference]: Finished difference. Result has 120 places, 86 transitions, 316 flow [2021-12-06 18:26:03,506 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=316, PETRI_PLACES=120, PETRI_TRANSITIONS=86} [2021-12-06 18:26:03,507 INFO L334 CegarLoopForPetriNet]: 96 programPoint places, 24 predicate places. [2021-12-06 18:26:03,507 INFO L470 AbstractCegarLoop]: Abstraction has has 120 places, 86 transitions, 316 flow [2021-12-06 18:26:03,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.71428571428571) internal successors, (523), 7 states have internal predecessors, (523), 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) [2021-12-06 18:26:03,507 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:26:03,507 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:26:03,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 18:26:03,507 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-12-06 18:26:03,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:26:03,508 INFO L85 PathProgramCache]: Analyzing trace with hash -2075845646, now seen corresponding path program 2 times [2021-12-06 18:26:03,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:26:03,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476751410] [2021-12-06 18:26:03,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:26:03,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:26:03,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:26:03,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:26:03,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:26:03,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476751410] [2021-12-06 18:26:03,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476751410] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:26:03,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:26:03,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:26:03,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345365050] [2021-12-06 18:26:03,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:26:03,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:26:03,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:26:03,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:26:03,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:26:03,690 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 93 [2021-12-06 18:26:03,691 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 86 transitions, 316 flow. Second operand has 11 states, 11 states have (on average 71.36363636363636) internal successors, (785), 11 states have internal predecessors, (785), 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) [2021-12-06 18:26:03,691 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:26:03,691 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 93 [2021-12-06 18:26:03,691 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:26:03,935 INFO L129 PetriNetUnfolder]: 96/314 cut-off events. [2021-12-06 18:26:03,935 INFO L130 PetriNetUnfolder]: For 1606/1669 co-relation queries the response was YES. [2021-12-06 18:26:03,937 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1259 conditions, 314 events. 96/314 cut-off events. For 1606/1669 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1205 event pairs, 28 based on Foata normal form. 12/316 useless extension candidates. Maximal degree in co-relation 1181. Up to 107 conditions per place. [2021-12-06 18:26:03,938 INFO L132 encePairwiseOnDemand]: 83/93 looper letters, 21 selfloop transitions, 8 changer transitions 19/109 dead transitions. [2021-12-06 18:26:03,939 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 109 transitions, 630 flow [2021-12-06 18:26:03,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 18:26:03,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-06 18:26:03,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 955 transitions. [2021-12-06 18:26:03,948 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7899090157154673 [2021-12-06 18:26:03,948 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 955 transitions. [2021-12-06 18:26:03,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 955 transitions. [2021-12-06 18:26:03,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:26:03,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 955 transitions. [2021-12-06 18:26:03,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 73.46153846153847) internal successors, (955), 13 states have internal predecessors, (955), 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) [2021-12-06 18:26:03,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 93.0) internal successors, (1302), 14 states have internal predecessors, (1302), 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) [2021-12-06 18:26:03,954 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 93.0) internal successors, (1302), 14 states have internal predecessors, (1302), 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) [2021-12-06 18:26:03,954 INFO L186 Difference]: Start difference. First operand has 120 places, 86 transitions, 316 flow. Second operand 13 states and 955 transitions. [2021-12-06 18:26:03,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 109 transitions, 630 flow [2021-12-06 18:26:03,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 109 transitions, 579 flow, removed 22 selfloop flow, removed 7 redundant places. [2021-12-06 18:26:03,962 INFO L242 Difference]: Finished difference. Result has 123 places, 86 transitions, 323 flow [2021-12-06 18:26:03,962 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=323, PETRI_PLACES=123, PETRI_TRANSITIONS=86} [2021-12-06 18:26:03,963 INFO L334 CegarLoopForPetriNet]: 96 programPoint places, 27 predicate places. [2021-12-06 18:26:03,963 INFO L470 AbstractCegarLoop]: Abstraction has has 123 places, 86 transitions, 323 flow [2021-12-06 18:26:03,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 71.36363636363636) internal successors, (785), 11 states have internal predecessors, (785), 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) [2021-12-06 18:26:03,964 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:26:03,964 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:26:03,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 18:26:03,964 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-12-06 18:26:03,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:26:03,965 INFO L85 PathProgramCache]: Analyzing trace with hash -675902887, now seen corresponding path program 1 times [2021-12-06 18:26:03,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:26:03,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450738027] [2021-12-06 18:26:03,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:26:03,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:26:03,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:26:04,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:26:04,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:26:04,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450738027] [2021-12-06 18:26:04,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450738027] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:26:04,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:26:04,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 18:26:04,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315230786] [2021-12-06 18:26:04,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:26:04,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:26:04,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:26:04,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:26:04,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:26:04,047 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 93 [2021-12-06 18:26:04,047 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 86 transitions, 323 flow. Second operand has 6 states, 6 states have (on average 75.16666666666667) internal successors, (451), 6 states have internal predecessors, (451), 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) [2021-12-06 18:26:04,048 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:26:04,048 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 93 [2021-12-06 18:26:04,048 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:26:04,250 INFO L129 PetriNetUnfolder]: 118/404 cut-off events. [2021-12-06 18:26:04,250 INFO L130 PetriNetUnfolder]: For 2054/2111 co-relation queries the response was YES. [2021-12-06 18:26:04,253 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1603 conditions, 404 events. 118/404 cut-off events. For 2054/2111 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1889 event pairs, 39 based on Foata normal form. 9/395 useless extension candidates. Maximal degree in co-relation 1524. Up to 114 conditions per place. [2021-12-06 18:26:04,256 INFO L132 encePairwiseOnDemand]: 87/93 looper letters, 28 selfloop transitions, 3 changer transitions 19/114 dead transitions. [2021-12-06 18:26:04,256 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 114 transitions, 692 flow [2021-12-06 18:26:04,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 18:26:04,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-06 18:26:04,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 702 transitions. [2021-12-06 18:26:04,258 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8387096774193549 [2021-12-06 18:26:04,258 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 702 transitions. [2021-12-06 18:26:04,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 702 transitions. [2021-12-06 18:26:04,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:26:04,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 702 transitions. [2021-12-06 18:26:04,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 78.0) internal successors, (702), 9 states have internal predecessors, (702), 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) [2021-12-06 18:26:04,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 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) [2021-12-06 18:26:04,262 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 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) [2021-12-06 18:26:04,262 INFO L186 Difference]: Start difference. First operand has 123 places, 86 transitions, 323 flow. Second operand 9 states and 702 transitions. [2021-12-06 18:26:04,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 114 transitions, 692 flow [2021-12-06 18:26:04,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 114 transitions, 605 flow, removed 37 selfloop flow, removed 14 redundant places. [2021-12-06 18:26:04,267 INFO L242 Difference]: Finished difference. Result has 118 places, 86 transitions, 307 flow [2021-12-06 18:26:04,268 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=307, PETRI_PLACES=118, PETRI_TRANSITIONS=86} [2021-12-06 18:26:04,268 INFO L334 CegarLoopForPetriNet]: 96 programPoint places, 22 predicate places. [2021-12-06 18:26:04,268 INFO L470 AbstractCegarLoop]: Abstraction has has 118 places, 86 transitions, 307 flow [2021-12-06 18:26:04,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.16666666666667) internal successors, (451), 6 states have internal predecessors, (451), 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) [2021-12-06 18:26:04,269 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:26:04,269 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:26:04,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 18:26:04,269 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-12-06 18:26:04,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:26:04,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1393558538, now seen corresponding path program 1 times [2021-12-06 18:26:04,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:26:04,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16537829] [2021-12-06 18:26:04,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:26:04,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:26:04,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:26:04,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:26:04,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:26:04,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16537829] [2021-12-06 18:26:04,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16537829] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:26:04,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:26:04,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 18:26:04,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031159154] [2021-12-06 18:26:04,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:26:04,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 18:26:04,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:26:04,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 18:26:04,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:26:04,388 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 93 [2021-12-06 18:26:04,388 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 86 transitions, 307 flow. Second operand has 8 states, 8 states have (on average 73.75) internal successors, (590), 8 states have internal predecessors, (590), 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) [2021-12-06 18:26:04,388 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:26:04,388 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 93 [2021-12-06 18:26:04,389 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:26:04,593 INFO L129 PetriNetUnfolder]: 90/366 cut-off events. [2021-12-06 18:26:04,593 INFO L130 PetriNetUnfolder]: For 1598/1705 co-relation queries the response was YES. [2021-12-06 18:26:04,594 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1332 conditions, 366 events. 90/366 cut-off events. For 1598/1705 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1781 event pairs, 17 based on Foata normal form. 14/358 useless extension candidates. Maximal degree in co-relation 1257. Up to 101 conditions per place. [2021-12-06 18:26:04,596 INFO L132 encePairwiseOnDemand]: 84/93 looper letters, 23 selfloop transitions, 8 changer transitions 19/113 dead transitions. [2021-12-06 18:26:04,596 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 113 transitions, 660 flow [2021-12-06 18:26:04,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 18:26:04,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-12-06 18:26:04,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 837 transitions. [2021-12-06 18:26:04,599 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8181818181818182 [2021-12-06 18:26:04,599 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 837 transitions. [2021-12-06 18:26:04,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 837 transitions. [2021-12-06 18:26:04,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:26:04,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 837 transitions. [2021-12-06 18:26:04,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 76.0909090909091) internal successors, (837), 11 states have internal predecessors, (837), 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) [2021-12-06 18:26:04,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 93.0) internal successors, (1116), 12 states have internal predecessors, (1116), 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) [2021-12-06 18:26:04,603 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 93.0) internal successors, (1116), 12 states have internal predecessors, (1116), 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) [2021-12-06 18:26:04,603 INFO L186 Difference]: Start difference. First operand has 118 places, 86 transitions, 307 flow. Second operand 11 states and 837 transitions. [2021-12-06 18:26:04,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 113 transitions, 660 flow [2021-12-06 18:26:04,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 113 transitions, 611 flow, removed 23 selfloop flow, removed 7 redundant places. [2021-12-06 18:26:04,608 INFO L242 Difference]: Finished difference. Result has 122 places, 88 transitions, 358 flow [2021-12-06 18:26:04,609 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=358, PETRI_PLACES=122, PETRI_TRANSITIONS=88} [2021-12-06 18:26:04,609 INFO L334 CegarLoopForPetriNet]: 96 programPoint places, 26 predicate places. [2021-12-06 18:26:04,609 INFO L470 AbstractCegarLoop]: Abstraction has has 122 places, 88 transitions, 358 flow [2021-12-06 18:26:04,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 73.75) internal successors, (590), 8 states have internal predecessors, (590), 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) [2021-12-06 18:26:04,610 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:26:04,610 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:26:04,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 18:26:04,610 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-12-06 18:26:04,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:26:04,611 INFO L85 PathProgramCache]: Analyzing trace with hash -751879984, now seen corresponding path program 1 times [2021-12-06 18:26:04,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:26:04,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590673918] [2021-12-06 18:26:04,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:26:04,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:26:04,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:26:04,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:26:04,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:26:04,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590673918] [2021-12-06 18:26:04,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590673918] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:26:04,677 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:26:04,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 18:26:04,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146667404] [2021-12-06 18:26:04,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:26:04,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:26:04,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:26:04,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:26:04,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:26:04,679 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 93 [2021-12-06 18:26:04,679 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 88 transitions, 358 flow. Second operand has 6 states, 6 states have (on average 74.16666666666667) internal successors, (445), 6 states have internal predecessors, (445), 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) [2021-12-06 18:26:04,679 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:26:04,679 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 93 [2021-12-06 18:26:04,679 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:26:04,911 INFO L129 PetriNetUnfolder]: 299/798 cut-off events. [2021-12-06 18:26:04,911 INFO L130 PetriNetUnfolder]: For 5782/5857 co-relation queries the response was YES. [2021-12-06 18:26:04,914 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2904 conditions, 798 events. 299/798 cut-off events. For 5782/5857 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4801 event pairs, 19 based on Foata normal form. 52/821 useless extension candidates. Maximal degree in co-relation 2828. Up to 176 conditions per place. [2021-12-06 18:26:04,916 INFO L132 encePairwiseOnDemand]: 84/93 looper letters, 30 selfloop transitions, 5 changer transitions 50/149 dead transitions. [2021-12-06 18:26:04,916 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 149 transitions, 1029 flow [2021-12-06 18:26:04,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 18:26:04,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-06 18:26:04,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 784 transitions. [2021-12-06 18:26:04,919 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.843010752688172 [2021-12-06 18:26:04,919 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 784 transitions. [2021-12-06 18:26:04,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 784 transitions. [2021-12-06 18:26:04,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:26:04,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 784 transitions. [2021-12-06 18:26:04,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 78.4) internal successors, (784), 10 states have internal predecessors, (784), 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) [2021-12-06 18:26:04,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 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) [2021-12-06 18:26:04,924 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 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) [2021-12-06 18:26:04,924 INFO L186 Difference]: Start difference. First operand has 122 places, 88 transitions, 358 flow. Second operand 10 states and 784 transitions. [2021-12-06 18:26:04,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 149 transitions, 1029 flow [2021-12-06 18:26:04,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 149 transitions, 989 flow, removed 7 selfloop flow, removed 7 redundant places. [2021-12-06 18:26:04,932 INFO L242 Difference]: Finished difference. Result has 124 places, 88 transitions, 372 flow [2021-12-06 18:26:04,932 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=372, PETRI_PLACES=124, PETRI_TRANSITIONS=88} [2021-12-06 18:26:04,933 INFO L334 CegarLoopForPetriNet]: 96 programPoint places, 28 predicate places. [2021-12-06 18:26:04,933 INFO L470 AbstractCegarLoop]: Abstraction has has 124 places, 88 transitions, 372 flow [2021-12-06 18:26:04,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 74.16666666666667) internal successors, (445), 6 states have internal predecessors, (445), 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) [2021-12-06 18:26:04,933 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:26:04,933 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:26:04,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 18:26:04,934 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-12-06 18:26:04,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:26:04,934 INFO L85 PathProgramCache]: Analyzing trace with hash 638868166, now seen corresponding path program 1 times [2021-12-06 18:26:04,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:26:04,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386534618] [2021-12-06 18:26:04,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:26:04,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:26:04,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:26:05,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:26:05,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:26:05,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386534618] [2021-12-06 18:26:05,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386534618] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:26:05,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:26:05,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 18:26:05,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876884924] [2021-12-06 18:26:05,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:26:05,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:26:05,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:26:05,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:26:05,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:26:05,016 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 93 [2021-12-06 18:26:05,016 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 88 transitions, 372 flow. Second operand has 7 states, 7 states have (on average 74.0) internal successors, (518), 7 states have internal predecessors, (518), 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) [2021-12-06 18:26:05,016 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:26:05,017 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 93 [2021-12-06 18:26:05,017 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:26:05,179 INFO L129 PetriNetUnfolder]: 60/276 cut-off events. [2021-12-06 18:26:05,179 INFO L130 PetriNetUnfolder]: For 1484/1492 co-relation queries the response was YES. [2021-12-06 18:26:05,180 INFO L84 FinitePrefix]: Finished finitePrefix Result has 987 conditions, 276 events. 60/276 cut-off events. For 1484/1492 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1133 event pairs, 3 based on Foata normal form. 21/294 useless extension candidates. Maximal degree in co-relation 917. Up to 48 conditions per place. [2021-12-06 18:26:05,181 INFO L132 encePairwiseOnDemand]: 85/93 looper letters, 18 selfloop transitions, 7 changer transitions 26/112 dead transitions. [2021-12-06 18:26:05,182 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 112 transitions, 696 flow [2021-12-06 18:26:05,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 18:26:05,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-06 18:26:05,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 761 transitions. [2021-12-06 18:26:05,185 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8182795698924731 [2021-12-06 18:26:05,185 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 761 transitions. [2021-12-06 18:26:05,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 761 transitions. [2021-12-06 18:26:05,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:26:05,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 761 transitions. [2021-12-06 18:26:05,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 76.1) internal successors, (761), 10 states have internal predecessors, (761), 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) [2021-12-06 18:26:05,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 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) [2021-12-06 18:26:05,191 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 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) [2021-12-06 18:26:05,191 INFO L186 Difference]: Start difference. First operand has 124 places, 88 transitions, 372 flow. Second operand 10 states and 761 transitions. [2021-12-06 18:26:05,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 112 transitions, 696 flow [2021-12-06 18:26:05,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 112 transitions, 487 flow, removed 97 selfloop flow, removed 18 redundant places. [2021-12-06 18:26:05,198 INFO L242 Difference]: Finished difference. Result has 115 places, 82 transitions, 271 flow [2021-12-06 18:26:05,198 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=271, PETRI_PLACES=115, PETRI_TRANSITIONS=82} [2021-12-06 18:26:05,199 INFO L334 CegarLoopForPetriNet]: 96 programPoint places, 19 predicate places. [2021-12-06 18:26:05,199 INFO L470 AbstractCegarLoop]: Abstraction has has 115 places, 82 transitions, 271 flow [2021-12-06 18:26:05,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.0) internal successors, (518), 7 states have internal predecessors, (518), 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) [2021-12-06 18:26:05,199 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:26:05,200 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:26:05,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 18:26:05,200 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-12-06 18:26:05,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:26:05,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1478007344, now seen corresponding path program 1 times [2021-12-06 18:26:05,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:26:05,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295093851] [2021-12-06 18:26:05,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:26:05,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:26:05,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:26:05,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:26:05,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:26:05,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295093851] [2021-12-06 18:26:05,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295093851] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:26:05,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:26:05,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-06 18:26:05,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441576542] [2021-12-06 18:26:05,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:26:05,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 18:26:05,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:26:05,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 18:26:05,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-12-06 18:26:05,483 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 93 [2021-12-06 18:26:05,484 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 82 transitions, 271 flow. Second operand has 14 states, 14 states have (on average 66.64285714285714) internal successors, (933), 14 states have internal predecessors, (933), 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) [2021-12-06 18:26:05,484 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:26:05,484 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 93 [2021-12-06 18:26:05,484 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:26:05,704 INFO L129 PetriNetUnfolder]: 5/120 cut-off events. [2021-12-06 18:26:05,704 INFO L130 PetriNetUnfolder]: For 78/78 co-relation queries the response was YES. [2021-12-06 18:26:05,704 INFO L84 FinitePrefix]: Finished finitePrefix Result has 272 conditions, 120 events. 5/120 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 160 event pairs, 0 based on Foata normal form. 1/121 useless extension candidates. Maximal degree in co-relation 217. Up to 12 conditions per place. [2021-12-06 18:26:05,705 INFO L132 encePairwiseOnDemand]: 82/93 looper letters, 18 selfloop transitions, 8 changer transitions 9/90 dead transitions. [2021-12-06 18:26:05,705 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 90 transitions, 367 flow [2021-12-06 18:26:05,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 18:26:05,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-06 18:26:05,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 880 transitions. [2021-12-06 18:26:05,708 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.727874276261373 [2021-12-06 18:26:05,708 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 880 transitions. [2021-12-06 18:26:05,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 880 transitions. [2021-12-06 18:26:05,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:26:05,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 880 transitions. [2021-12-06 18:26:05,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 67.6923076923077) internal successors, (880), 13 states have internal predecessors, (880), 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) [2021-12-06 18:26:05,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 93.0) internal successors, (1302), 14 states have internal predecessors, (1302), 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) [2021-12-06 18:26:05,716 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 93.0) internal successors, (1302), 14 states have internal predecessors, (1302), 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) [2021-12-06 18:26:05,716 INFO L186 Difference]: Start difference. First operand has 115 places, 82 transitions, 271 flow. Second operand 13 states and 880 transitions. [2021-12-06 18:26:05,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 90 transitions, 367 flow [2021-12-06 18:26:05,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 90 transitions, 301 flow, removed 18 selfloop flow, removed 19 redundant places. [2021-12-06 18:26:05,719 INFO L242 Difference]: Finished difference. Result has 106 places, 80 transitions, 222 flow [2021-12-06 18:26:05,720 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=222, PETRI_PLACES=106, PETRI_TRANSITIONS=80} [2021-12-06 18:26:05,720 INFO L334 CegarLoopForPetriNet]: 96 programPoint places, 10 predicate places. [2021-12-06 18:26:05,720 INFO L470 AbstractCegarLoop]: Abstraction has has 106 places, 80 transitions, 222 flow [2021-12-06 18:26:05,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 66.64285714285714) internal successors, (933), 14 states have internal predecessors, (933), 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) [2021-12-06 18:26:05,721 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:26:05,721 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:26:05,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 18:26:05,721 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-12-06 18:26:05,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:26:05,722 INFO L85 PathProgramCache]: Analyzing trace with hash 758801532, now seen corresponding path program 2 times [2021-12-06 18:26:05,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:26:05,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696002242] [2021-12-06 18:26:05,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:26:05,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:26:05,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:26:05,763 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 18:26:05,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:26:05,842 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 18:26:05,843 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 18:26:05,843 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2021-12-06 18:26:05,845 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2021-12-06 18:26:05,845 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 5 remaining) [2021-12-06 18:26:05,846 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 5 remaining) [2021-12-06 18:26:05,846 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2021-12-06 18:26:05,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 18:26:05,850 INFO L732 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:26:05,855 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-06 18:26:05,855 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 18:26:05,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 06:26:05 BasicIcfg [2021-12-06 18:26:05,919 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 18:26:05,919 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 18:26:05,919 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 18:26:05,920 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 18:26:05,920 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:26:01" (3/4) ... [2021-12-06 18:26:05,921 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-06 18:26:05,980 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cacb7692-8429-4aed-bb9b-c40c4932d1cd/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 18:26:05,981 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 18:26:05,981 INFO L158 Benchmark]: Toolchain (without parser) took 5573.97ms. Allocated memory was 98.6MB in the beginning and 174.1MB in the end (delta: 75.5MB). Free memory was 59.1MB in the beginning and 71.8MB in the end (delta: -12.7MB). Peak memory consumption was 61.5MB. Max. memory is 16.1GB. [2021-12-06 18:26:05,982 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 98.6MB. Free memory was 76.9MB in the beginning and 76.8MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 18:26:05,982 INFO L158 Benchmark]: CACSL2BoogieTranslator took 422.73ms. Allocated memory is still 98.6MB. Free memory was 58.9MB in the beginning and 62.5MB in the end (delta: -3.6MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. [2021-12-06 18:26:05,982 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.44ms. Allocated memory is still 98.6MB. Free memory was 62.5MB in the beginning and 59.7MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 18:26:05,983 INFO L158 Benchmark]: Boogie Preprocessor took 24.96ms. Allocated memory is still 98.6MB. Free memory was 59.7MB in the beginning and 57.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 18:26:05,983 INFO L158 Benchmark]: RCFGBuilder took 660.04ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 57.5MB in the beginning and 84.9MB in the end (delta: -27.3MB). Peak memory consumption was 29.8MB. Max. memory is 16.1GB. [2021-12-06 18:26:05,983 INFO L158 Benchmark]: TraceAbstraction took 4357.50ms. Allocated memory was 119.5MB in the beginning and 174.1MB in the end (delta: 54.5MB). Free memory was 84.2MB in the beginning and 89.6MB in the end (delta: -5.4MB). Peak memory consumption was 50.1MB. Max. memory is 16.1GB. [2021-12-06 18:26:05,984 INFO L158 Benchmark]: Witness Printer took 61.24ms. Allocated memory is still 174.1MB. Free memory was 89.6MB in the beginning and 71.8MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-12-06 18:26:05,986 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 98.6MB. Free memory was 76.9MB in the beginning and 76.8MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 422.73ms. Allocated memory is still 98.6MB. Free memory was 58.9MB in the beginning and 62.5MB in the end (delta: -3.6MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.44ms. Allocated memory is still 98.6MB. Free memory was 62.5MB in the beginning and 59.7MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.96ms. Allocated memory is still 98.6MB. Free memory was 59.7MB in the beginning and 57.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 660.04ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 57.5MB in the beginning and 84.9MB in the end (delta: -27.3MB). Peak memory consumption was 29.8MB. Max. memory is 16.1GB. * TraceAbstraction took 4357.50ms. Allocated memory was 119.5MB in the beginning and 174.1MB in the end (delta: 54.5MB). Free memory was 84.2MB in the beginning and 89.6MB in the end (delta: -5.4MB). Peak memory consumption was 50.1MB. Max. memory is 16.1GB. * Witness Printer took 61.24ms. Allocated memory is still 174.1MB. Free memory was 89.6MB in the beginning and 71.8MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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; VAL [__unbuffered_cnt=0] [L709] 0 _Bool main$tmp_guard0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0] [L710] 0 _Bool main$tmp_guard1; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0] [L712] 0 int x = 0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0] [L714] 0 int y = 0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0] [L715] 0 _Bool y$flush_delayed; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0] [L716] 0 int y$mem_tmp; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0] [L717] 0 _Bool y$r_buff0_thd0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0] [L718] 0 _Bool y$r_buff0_thd1; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0] [L719] 0 _Bool y$r_buff0_thd2; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0] [L720] 0 _Bool y$r_buff1_thd0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0] [L721] 0 _Bool y$r_buff1_thd1; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0] [L722] 0 _Bool y$r_buff1_thd2; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0] [L723] 0 _Bool y$read_delayed; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0] [L724] 0 int *y$read_delayed_var; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}] [L725] 0 int y$w_buff0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0] [L726] 0 _Bool y$w_buff0_used; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0] [L727] 0 int y$w_buff1; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0] [L728] 0 _Bool y$w_buff1_used; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L729] 0 _Bool weak$$choice0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L730] 0 _Bool weak$$choice2; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L790] 0 pthread_t t2473; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, t2473={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L791] FCALL, FORK 0 pthread_create(&t2473, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2473, ((void *)0), P0, ((void *)0))=-1, t2473={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L792] 0 pthread_t t2474; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, t2473={5:0}, t2474={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L793] FCALL, FORK 0 pthread_create(&t2474, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2474, ((void *)0), P1, ((void *)0))=0, t2473={5:0}, t2474={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L734] 1 y$w_buff1 = y$w_buff0 [L735] 1 y$w_buff0 = 2 [L736] 1 y$w_buff1_used = y$w_buff0_used [L737] 1 y$w_buff0_used = (_Bool)1 [L738] CALL 1 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L18] COND FALSE 1 !(!expression) [L738] RET 1 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L739] 1 y$r_buff1_thd0 = y$r_buff0_thd0 [L740] 1 y$r_buff1_thd1 = y$r_buff0_thd1 [L741] 1 y$r_buff1_thd2 = y$r_buff0_thd2 [L742] 1 y$r_buff0_thd1 = (_Bool)1 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0] [L745] 1 x = 1 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0] [L762] 2 x = 2 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0] [L765] 2 y = 1 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0] [L748] EXPR 1 y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd1 ? y$w_buff1 : y) [L748] 1 y = y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd1 ? y$w_buff1 : y) [L749] EXPR 1 y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$w_buff0_used [L749] 1 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$w_buff0_used [L750] EXPR 1 y$w_buff0_used && y$r_buff0_thd1 || y$w_buff1_used && y$r_buff1_thd1 ? (_Bool)0 : y$w_buff1_used [L750] 1 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd1 || y$w_buff1_used && y$r_buff1_thd1 ? (_Bool)0 : y$w_buff1_used [L751] EXPR 1 y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$r_buff0_thd1 [L751] 1 y$r_buff0_thd1 = y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$r_buff0_thd1 [L752] EXPR 1 y$w_buff0_used && y$r_buff0_thd1 || y$w_buff1_used && y$r_buff1_thd1 ? (_Bool)0 : y$r_buff1_thd1 [L752] 1 y$r_buff1_thd1 = y$w_buff0_used && y$r_buff0_thd1 || y$w_buff1_used && y$r_buff1_thd1 ? (_Bool)0 : y$r_buff1_thd1 [L755] 1 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [__unbuffered_cnt=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L768] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L768] EXPR 2 y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y [L768] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L768] 2 y = y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L769] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L769] 2 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L770] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L770] 2 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L771] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L771] 2 y$r_buff0_thd2 = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L772] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 [L772] 2 y$r_buff1_thd2 = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 [L775] 2 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [__unbuffered_cnt=2, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L795] 0 main$tmp_guard0 = __unbuffered_cnt == 2 VAL [__unbuffered_cnt=2, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2473={5:0}, t2474={3:0}, weak$$choice0=0, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L797] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) VAL [\old(cond)=1, __unbuffered_cnt=2, arg={0:0}, arg={0:0}, cond=1, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L797] RET 0 assume_abort_if_not(main$tmp_guard0) [L799] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L799] EXPR 0 y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y [L799] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L799] 0 y = y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L800] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L800] 0 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L801] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L801] 0 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L802] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L802] 0 y$r_buff0_thd0 = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L803] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 [L803] 0 y$r_buff1_thd0 = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 [L806] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L807] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L808] 0 y$flush_delayed = weak$$choice2 [L809] 0 y$mem_tmp = y [L810] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L810] 0 y = !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L811] EXPR 0 weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L811] 0 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L812] EXPR 0 weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L812] 0 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L813] EXPR 0 weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L813] 0 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L814] EXPR 0 weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L814] 0 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L815] EXPR 0 weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L815] 0 y$r_buff0_thd0 = weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L816] EXPR 0 weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L816] 0 y$r_buff1_thd0 = weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L817] 0 main$tmp_guard1 = !(x == 2 && y == 2) [L818] EXPR 0 y$flush_delayed ? y$mem_tmp : y [L818] 0 y = y$flush_delayed ? y$mem_tmp : y [L819] 0 y$flush_delayed = (_Bool)0 VAL [__unbuffered_cnt=2, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2473={5:0}, t2474={3:0}, weak$$choice0=49, weak$$choice2=255, x=2, y=2, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L821] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression VAL [\old(expression)=1, \old(expression)=0, __unbuffered_cnt=2, arg={0:0}, arg={0:0}, expression=1, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=255, x=2, y=2, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L18] 0 reach_error() VAL [\old(expression)=0, \old(expression)=1, __unbuffered_cnt=2, arg={0:0}, arg={0:0}, expression=1, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=255, x=2, y=2, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 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. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.2s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 355 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 355 mSDsluCounter, 422 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 577 mSDsCounter, 115 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 903 IncrementalHoareTripleChecker+Invalid, 1018 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 115 mSolverCounterUnsat, 87 mSDtfsCounter, 903 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 136 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=372occurred in iteration=8, InterpolantAutomatonStates: 107, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 710 NumberOfCodeBlocks, 710 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 628 ConstructedInterpolants, 0 QuantifiedInterpolants, 3131 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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! [2021-12-06 18:26:06,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cacb7692-8429-4aed-bb9b-c40c4932d1cd/bin/uautomizer-DrprNOufMa/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